CHANGES

Signed-off-by: Larry Gritz <lg@larrygritz.com>
CMake 3.20 compatibility (#1349 )
2021-04-01 19:38:51 -07:00 · 2021-03-27 22:27:01 -07:00 · 2021-03-22 15:11:55 -07:00 · 2021-03-22 15:11:25 -07:00 · 2021-03-12 15:17:46 -08:00 · 2021-03-02 00:33:22 -08:00
821 changed files with 4072 additions and 2931 deletions
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 Language:        Cpp
 BasedOnStyle:  WebKit
@@ -0,0 +1,8 @@
+# Start using clang-format on OSL code base (#1215)
+630b4c042d696c94ec9b2a1b6f5adc250bd61e05
+
+# More clang-format (#1218)
+bdb473cbdb119f3d9060d48f75f965cbd45f6d7a
+
+# More clang-format: liboslquery, oslinfo, oslc, osl.imageio, osltoy (#1220)
+bf366d7a90c46599b82071dac6dbef7c5e3ca157
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # GitHub Actions workflow file for CI
 # https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions
@@ -21,7 +21,7 @@ on:
      - '**.tex'
  schedule:
    # Full nightly build
-    - cron: "0 4 * * *"
+    - cron: "0 8 * * *"


 jobs:
@@ -29,179 +29,446 @@ jobs:
    name: "Linux VFXP-2019: gcc6 C++11 llvm7 py2.7 boost-1.66 exr-2.3 OIIO-2.0 sse2"
    runs-on: ubuntu-latest
    container:
-      image: aswf/ci-osl:2019
+      image: aswf/ci-osl:2019-clang7
+    env:
+      CXX: g++
+      CC: gcc
+      CMAKE_CXX_STANDARD: 11
+      PYTHON_VERSION: 2.7
+      USE_PYTHON: 0
+      OPENIMAGEIO_VERSION: Release-2.1.20.0
    steps:
      - uses: actions/checkout@v2
-      - name: all
-        env:
-          CXX: g++
-          CC: gcc
-          CMAKE_CXX_STANDARD: 11
-          PYTHON_VERSION: 2.7
-          USE_PYTHON: 0
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
        run: |
-            source src/build-scripts/ci-startup.bash
-            source src/build-scripts/gh-installdeps-centos.bash
-            source src/build-scripts/ci-build-and-test.bash
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            # Remove pesky wrong installed OIIO version
+            rm -rf /usr/local/include/OpenImageIO
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      - name: Testsuite
+        run: |
+            src/build-scripts/ci-test.bash
      - uses: actions/upload-artifact@v2
        if: failure()
        with:
          name: ${{ github.job }}
-          path: build/*/testsuite/*/*.*
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}

  vfxplatform-2020:
    name: "Linux VFXP-2020 gcc6/C++14 llvm7 py3.7 boost-1.70 exr-2.4 OIIO-2.1 sse4"
    runs-on: ubuntu-latest
    container:
      image: aswf/ci-osl:2020
+    env:
+      CXX: g++
+      CC: gcc
+      CMAKE_CXX_STANDARD: 14
+      PYTHON_VERSION: 3.7
+      USE_SIMD: sse4.2
    steps:
      - uses: actions/checkout@v2
-      - name: all
-        env:
-          CXX: g++
-          CC: gcc
-          CMAKE_CXX_STANDARD: 14
-          PYTHON_VERSION: 3.7
-          USE_SIMD: sse4.2
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
        run: |
-            source src/build-scripts/ci-startup.bash
-            source src/build-scripts/gh-installdeps-centos.bash
-            source src/build-scripts/ci-build-and-test.bash
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      - name: Testsuite
+        run: |
+            src/build-scripts/ci-test.bash
      - uses: actions/upload-artifact@v2
        if: failure()
        with:
          name: ${{ github.job }}
-          path: build/*/testsuite/*/*.*
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}

  vfxplatform-2021:
    name: "Linux VFXP-2021 gcc9/C++17 llvm10 py3.7 boost-1.70 exr-2.5 OIIO-2.2 avx2"
    runs-on: ubuntu-latest
    container:
      image: aswf/ci-osl:2021
+    env:
+      CXX: g++
+      CC: gcc
+      CMAKE_CXX_STANDARD: 17
+      PYTHON_VERSION: 3.7
+      USE_SIMD: avx2,f16c
+      OPENEXR_VERSION: v2.5.3
+      OPENIMAGEIO_VERSION: RB-2.2
    steps:
      - uses: actions/checkout@v2
-      - name: all
-        env:
-          CXX: g++
-          CC: gcc
-          CMAKE_CXX_STANDARD: 17
-          PYTHON_VERSION: 3.7
-          USE_SIMD: avx2,f16c
-          OPENEXR_VERSION: 2.5.0
-          OPENIMAGEIO_BRANCH: RB-2.2
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
        run: |
-            source src/build-scripts/ci-startup.bash
-            source src/build-scripts/gh-installdeps-centos.bash
-            source src/build-scripts/ci-build-and-test.bash
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      - name: Testsuite
+        run: |
+            src/build-scripts/ci-test.bash
      - uses: actions/upload-artifact@v2
        if: failure()
        with:
          name: ${{ github.job }}
-          path: build/*/testsuite/*/*.*
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}
+
+  vfxplatform-2021-exrmaster:
+    name: "Linux VFXP-2021 gcc9/C++17 llvm11 py3.7 boost-1.70 exr-3.0 OIIO-2.2 avx2"
+    runs-on: ubuntu-latest
+    container:
+      image: aswf/ci-osl:2021-clang11
+    env:
+      CXX: g++
+      CC: gcc
+      CMAKE_CXX_STANDARD: 17
+      PYTHON_VERSION: 3.7
+      USE_SIMD: avx2,f16c
+      OPENEXR_VERSION: master
+      OPENIMAGEIO_VERSION: RB-2.2
+    steps:
+      - uses: actions/checkout@v2
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
+        run: |
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            sudo rm -rf /usr/local/include/OpenEXR
+            sudo rm -rf /usr/local/lib64/cmake/{IlmBase,OpenEXR}
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      - name: Testsuite
+        run: |
+            src/build-scripts/ci-test.bash
+      - uses: actions/upload-artifact@v2
+        if: failure()
+        with:
+          name: ${{ github.job }}
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}
+
+  # Build for OptiX, but don't run tests (will need a GPU instance for that)
+  gpu-optix7-2019:
+    name: "Linux GPU VFXP-2019 Cuda10 gcc6/C++14 llvm10 py2.7 boost-1.70 exr-2.4 OIIO-master avx2"
+    runs-on: ubuntu-latest
+    container:
+      image: aswftesting/ci-osl:2019-clang10
+    env:
+      CXX: g++
+      CC: gcc
+      CMAKE_CXX_STANDARD: 14
+      PYTHON_VERSION: 2.7
+      USE_SIMD: avx2,f16c
+      OPENIMAGEIO_VERSION: master
+      OSL_CMAKE_FLAGS: -DUSE_OPTIX=1
+      OPTIX_VERSION: "7.0"
+    steps:
+      - uses: actions/checkout@v2
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
+        run: |
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            rm -rf /usr/local/include/OpenImageIO
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      # Testsuite disabled until we have GPU hardware to run on
+      #- name: Testsuite
+      #  run: |
+      #      src/build-scripts/ci-test.bash
+      - uses: actions/upload-artifact@v2
+        if: failure()
+        with:
+          name: ${{ github.job }}
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}
+            optix.h

  linux-debug-gcc7-llvm8:
    name: "Linux Debug gcc7, C++14, llvm8, OIIO release, sse4, exr2.4"
    runs-on: ubuntu-18.04
+    env:
+      CXX: g++-7
+      CMAKE_BUILD_TYPE: Debug
+      USE_CPP: 14
+      CMAKE_CXX_STANDARD: 14
+      # Debug build makes some tests run very slowly, increase timeout
+      CTEST_TEST_TIMEOUT: 240
+      LLVM_VERSION: 8.0.0
+      OPENEXR_VERSION: v2.4.1
+      OPENIMAGEIO_VERSION: release
+      USE_SIMD: sse4.2
    steps:
      - uses: actions/checkout@v2
-      - name: all
-        env:
-          CXX: g++-7
-          USE_CPP: 14
-          CMAKE_CXX_STANDARD: 14
-          LLVM_VERSION: 8.0.0
-          OPENEXR_VERSION: 2.4.0
-          OPENIMAGEIO_BRANCH: release
-          USE_SIMD: sse4.2
-          MY_CMAKE_FLAGS: -DCMAKE_BUILD_TYPE=Debug
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
        run: |
-            source src/build-scripts/ci-startup.bash
-            source src/build-scripts/gh-installdeps.bash
-            source src/build-scripts/ci-build-and-test.bash
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      - name: Testsuite
+        run: |
+            src/build-scripts/ci-test.bash
      - uses: actions/upload-artifact@v2
        if: failure()
        with:
          name: ${{ github.job }}
-          path: build/*/testsuite/*/*.*
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}

-  linux-2020ish-clang9-llvm9:
+  linux-clang9-llvm9:
    name: "Linux clang9, C++14, llvm9, oiio release, avx, exr2.4, avx"
    runs-on: ubuntu-18.04
+    container:
+      image: aswf/ci-osl:2019-clang9
+    env:
+      CXX: clang++
+      CMAKE_CXX_STANDARD: 14
+      USE_SIMD: avx
+      OPENIMAGEIO_VERSION: release
+      PYTHON_VERSION: 2.7
    steps:
      - uses: actions/checkout@v2
-      - name: all
-        env:
-          CXX: clang++
-          USE_CPP: 14
-          CMAKE_CXX_STANDARD: 14
-          LLVM_VERSION: 9.0.0
-          USE_SIMD: avx
-          OPENEXR_VERSION: 2.4.0
-          OPENIMAGEIO_BRANCH: release
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
        run: |
-            source src/build-scripts/ci-startup.bash
-            source src/build-scripts/gh-installdeps.bash
-            source src/build-scripts/ci-build-and-test.bash
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            # Remove pesky wrong installed OIIO version
+            rm -rf /usr/local/include/OpenImageIO
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      - name: Testsuite
+        run: |
+            src/build-scripts/ci-test.bash
      - uses: actions/upload-artifact@v2
        if: failure()
        with:
          name: ${{ github.job }}
-          path: build/*/testsuite/*/*.*
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}

  linux-2021ish-gcc8-llvm10:
    name: "Linux gcc8, C++17, llvm10, oiio master, avx2, exr2.5, avx2"
    runs-on: ubuntu-18.04
+    env:
+      CXX: g++-8
+      CMAKE_CXX_STANDARD: 17
+      LLVM_VERSION: 10.0.0
+      USE_SIMD: avx2,f16c
+      OPENEXR_VERSION: v2.5.3
+      OPENIMAGEIO_VERSION: master
+      OPENIMAGEIO_CMAKE_FLAGS: -DBUILD_FMT_VERSION=7.0.1
+      PUGIXML_VERSION: v1.10
+      PYBIND11_VERSION: v2.5.0
    steps:
      - uses: actions/checkout@v2
-      - name: all
-        env:
-          CXX: g++-8
-          CMAKE_CXX_STANDARD: 17
-          LLVM_VERSION: 10.0.0
-          USE_SIMD: avx2,f16c
-          OPENEXR_VERSION: 2.5.0
-          OPENIMAGEIO_BRANCH: master
-          OPENIMAGEIO_CMAKE_FLAGS: -DBUILD_FMT_VERSION=7.0.1
-          PYBIND11_VERSION: 2.5.0
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
        run: |
-            source src/build-scripts/ci-startup.bash
-            source src/build-scripts/gh-installdeps.bash
-            source src/build-scripts/ci-build-and-test.bash
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      - name: Testsuite
+        run: |
+            src/build-scripts/ci-test.bash
      - uses: actions/upload-artifact@v2
        if: failure()
        with:
          name: ${{ github.job }}
-          path: build/*/testsuite/*/*.*
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}

  linux-bleeding-edge:
    # Test against development master for relevant dependencies, latest
    # supported releases of everything else.
-    name: "Linux bleeding edge: gcc10, C++17, llvm10, oiio/ocio/exr/pybind-master, avx2"
-    runs-on: ubuntu-18.04
+    name: "Linux bleeding edge: gcc10, C++17, llvm11, oiio/ocio/exr/pybind-master, avx2"
+    runs-on: ubuntu-20.04
+    env:
+      CXX: g++-10
+      USE_CPP: 17
+      CMAKE_CXX_STANDARD: 17
+      LLVM_VERSION: 11.0.0
+      LLVM_DISTRO_NAME: ubuntu-20.04
+      USE_SIMD: avx2,f16c
+      OPENEXR_VERSION: master
+      OPENIMAGEIO_VERSION: master
+      OPENIMAGEIO_CMAKE_FLAGS: -DBUILD_FMT_VERSION=master
+      OPENCOLORIO_VERSION: master
+      PYBIND11_VERSION: master
+      PUGIXML_VERSION: master
+      OSL_BUILD_MATERIALX: 1
    steps:
      - uses: actions/checkout@v2
-      - name: all
-        env:
-          CXX: g++-10
-          USE_CPP: 17
-          CMAKE_CXX_STANDARD: 17
-          LLVM_VERSION: 10.0.0
-          USE_SIMD: avx2,f16c
-          OPENEXR_BRANCH: master
-          OPENIMAGEIO_BRANCH: master
-          OPENIMAGEIO_CMAKE_FLAGS: -DBUILD_FMT_VERSION=master
-          OCIO_BRANCH: master
-          PYBIND11_BRANCH: master
-          OSL_BUILD_MATERIALX: 1
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
        run: |
-            source src/build-scripts/ci-startup.bash
-            source src/build-scripts/gh-installdeps.bash
-            source src/build-scripts/ci-build-and-test.bash
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      - name: Testsuite
+        run: |
+            src/build-scripts/ci-test.bash
      - uses: actions/upload-artifact@v2
        if: failure()
        with:
          name: ${{ github.job }}
-          path: build/*/testsuite/*/*.*
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}

  linux-oldest:
    # Oldest versions of the dependencies that we can muster, and various
@@ -209,121 +476,103 @@ jobs:
    name: "Linux oldest everything: gcc6 C++11 llvm7 py2.7 boost-1.66 oiio-2.0 no-simd exr2.3"
    runs-on: ubuntu-latest
    container:
-      image: aswf/ci-osl:2019
+      image: aswf/ci-osl:2019-clang7
+    env:
+      CXX: g++
+      CC: gcc
+      CMAKE_CXX_STANDARD: 11
+      PYTHON_VERSION: 2.7
+      USE_SIMD: 0
+      USE_PYTHON: 0
+      OPENIMAGEIO_VERSION: Release-2.1.20.0
+      PUGIXML_VERSION: v1.8
    steps:
      - uses: actions/checkout@v2
-      - name: all
-        env:
-          CXX: g++
-          CC: gcc
-          CMAKE_CXX_STANDARD: 11
-          PYTHON_VERSION: 2.7
-          USE_SIMD: 0
-          USE_PYTHON: 0
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
        run: |
-            source src/build-scripts/ci-startup.bash
-            source src/build-scripts/gh-installdeps-centos.bash
-            source src/build-scripts/ci-build-and-test.bash
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            rm -rf /usr/local/include/OpenImageIO
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      - name: Testsuite
+        run: |
+            src/build-scripts/ci-test.bash
      - uses: actions/upload-artifact@v2
        if: failure()
        with:
          name: ${{ github.job }}
-          path: build/*/testsuite/*/*.*
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}

-  macos-py38:
-    name: "Mac py38"
+  macos-py39:
+    name: "Mac py39"
    runs-on: macOS-latest
+    env:
+      CXX: clang++
+      USE_CPP: 14
+      CMAKE_CXX_STANDARD: 14
+      PYTHON_VERSION: 3.9
+      LLVM_BC_GENERATOR: /usr/bin/clang++
+      OSL_CMAKE_FLAGS: -DLLVM_BC_GENERATOR=/usr/bin/clang++
+        # ^^ Force bitcode compiles to use the system clang compiler by
+        # preemptively telling it the LLVM_BC_GENERATOR, to avoid some
+        # library mismatches we tend to see on GH CI's Mac images.
    steps:
      - uses: actions/checkout@v2
-      - name: all
-        env:
-          CXX: clang++
-          USE_CPP: 14
-          CMAKE_CXX_STANDARD: 14
-          PYTHON_VERSION: 3.8
-          LLVM_BC_GENERATOR: /usr/bin/clang++
-          MY_CMAKE_FLAGS: -DLLVM_BC_GENERATOR=/usr/bin/clang++
-            # ^^ Force bitcode compiles to use the system clang compiler by
-            # preemptively telling it the LLVM_BC_GENERATOR, to avoid some
-            # library mismatches we tend to see on GH CI's Mac images.
+      - name: Prepare ccache timestamp
+        id: ccache_cache_keys
+        shell: bash
+        run: |
+          echo "::set-output name=date::`date -u +'%Y-%m-%dT%H:%M:%SZ'`"
+      - name: ccache
+        id: ccache
+        uses: actions/cache@v2
+        with:
+          path: /Users/runner/.ccache
+          key: ${{ github.job }}-${{ steps.ccache_cache_keys.outputs.date }}
+          restore-keys: |
+            ${{ github.job }}-
+      - name: Build setup
+        run: |
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
        run: |
-            source src/build-scripts/ci-startup.bash
            source src/build-scripts/install_homebrew_deps.bash
-            OPENIMAGEIO_CMAKE_FLAGS="-DOIIO_BUILD_TESTS=0 -DUSE_OPENGL=0"
-            source src/build-scripts/build_openimageio.bash
-            source src/build-scripts/ci-build-and-test.bash
+            # OPENIMAGEIO_CMAKE_FLAGS="-DOIIO_BUILD_TESTS=0 -DUSE_OPENGL=0"
+            # source src/build-scripts/build_openimageio.bash
+            brew install --display-times -q openimageio
+            PYTHONPATH=$PYTHONPATH:/usr/local/python${PYTHON_VERSION}/site-packages
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
+      - name: Testsuite
+        run: |
+            src/build-scripts/ci-test.bash
      - uses: actions/upload-artifact@v2
        if: failure()
        with:
          name: ${{ github.job }}
-          path: build/*/testsuite/*/*.*
-
-  # windows:
-  #   name: "Windows"
-  #   runs-on: windows-2019
-  #   steps:
-  #     - uses: actions/checkout@v2
-  #     - name: Setup Nuget.exe
-  #       uses: warrenbuckley/Setup-Nuget@v1
-  #     - name: all
-  #       shell: bash
-  #       env:
-  #         PYTHON_VERSION: 3.6
-  #         CMAKE_GENERATOR: "Visual Studio 16 2019"
-  #         OPENEXR_VERSION: 2.4.0
-  #       run: |
-  #           source src/build-scripts/ci-startup.bash
-  #           source src/build-scripts/gh-win-installdeps.bash
-  #           source src/build-scripts/ci-build-and-test.bash
-  #    - uses: actions/upload-artifact@v2
-  #      if: failure()
-  #      with:
-  #        name: ${{ github.job }}
-  #        path: build/*/testsuite/*/*.*
-
-  # sanitizer:
-  #   name: "Sanitizers"
-  #   runs-on: ubuntu-18.04
-  #   if: github.event_name == 'pull_request' || contains(github.ref, 'san') || contains(github.ref, 'RB') || contains(github.ref, 'release') || contains(github.ref, 'master') || contains(github.ref, 'gh')
-  #   steps:
-  #     - uses: actions/checkout@v2
-  #     #- uses: docker://aswfstaging/ci-base:2019
-  #     - name: all
-  #       env:
-  #         CXX: g++-7
-  #         CMAKE_CXX_STANDARD: 14
-  #         SANITIZE: address
-  #         USE_PYTHON: 0
-  #       run: |
-  #           source src/build-scripts/ci-startup.bash
-  #           source src/build-scripts/gh-installdeps.bash
-  #           source src/build-scripts/ci-build-and-test.bash
-  #    - uses: actions/upload-artifact@v2
-  #      if: failure()
-  #      with:
-  #        name: ${{ github.job }}
-  #        path: build/*/testsuite/*/*.*
-
-  # linux-static:
-  #   name: "Linux static libs: gcc7, C++14, exr2.3"
-  #   runs-on: ubuntu-18.04
-  #   steps:
-  #     - uses: actions/checkout@v2
-  #     #- uses: docker://aswfstaging/ci-base:2019
-  #     - name: all
-  #       env:
-  #         CXX: g++-7
-  #         CMAKE_CXX_STANDARD: 14
-  #         BUILD_SHARED_LIBS: OFF
-  #       run: |
-  #           source src/build-scripts/ci-startup.bash
-  #           source src/build-scripts/gh-installdeps.bash
-  #           source src/build-scripts/ci-build-and-test.bash
-  #    - uses: actions/upload-artifact@v2
-  #      if: failure()
-  #      with:
-  #        name: ${{ github.job }}
-  #        path: build/*/testsuite/*/*.*
+          path: |
+            build/*/testsuite/*/*.*
+            build/*/CMake*.{txt,log}

  clang-format:
    # Test formatting. This test entry doesn't do a full build, it just runs
@@ -333,19 +582,22 @@ jobs:
    name: "clang-format verification"
    runs-on: ubuntu-18.04
    container:
-      image: aswf/ci-osl:2021
+      image: aswf/ci-osl:2021-clang10
+    env:
+      BUILDTARGET: clang-format
+      CMAKE_CXX_STANDARD: 17
+      PYTHON_VERSION: 3.7
    steps:
      - uses: actions/checkout@v2
-      - name: all
-        env:
-          BUILDTARGET: clang-format
-          CMAKE_CXX_STANDARD: 17
-          PYTHON_VERSION: 3.7
-          SKIP_TESTS: 1
+      - name: Build setup
        run: |
-            source src/build-scripts/ci-startup.bash
-            source src/build-scripts/gh-installdeps-centos.bash
-            source src/build-scripts/ci-build-and-test.bash
+            src/build-scripts/ci-startup.bash
+      - name: Dependencies
+        run: |
+            src/build-scripts/gh-installdeps.bash
+      - name: Build
+        run: |
+            src/build-scripts/ci-build.bash
      - uses: actions/upload-artifact@v2
        if: failure()
        with:
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 dist
 build
@@ -1,183 +0,0 @@
-# Copyright Contributors to the Open Shading Language project.
-# SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
-
-# .travis.yml for OSL
-
-language: cpp
-osx_image: xcode10
-dist: xenial
-
-
-# Add-ons: specify apt packages for Linux
-# We actaully specify packages per-matrix-entry, so these don't do anything
-# except to tag them (&add-sources, &common-packages, &common-boost-packages)
-# so they can be referened later ('*') to save repetition.
-addons:
-  apt:
-   sources: &add-sources
-      - ubuntu-toolchain-r-test
-   packages: &common-packages
-      - libgif-dev
-      - libfreetype6-dev
-      - python-numpy
-      - ninja-build
-      - libfreetype6-dev
-      - libpugixml-dev
-   packages: &common-boost-packages
-      - libboost1.58-dev
-      - libboost-filesystem1.58
-      - libboost-regex1.58
-      - libboost-system1.58
-      - libboost-thread1.58
-   packages: &old-boost-packages
-      - libboost1.55-dev
-      - libboost-filesystem1.55
-      - libboost-regex1.55
-      - libboost-system1.55
-      - libboost-thread1.55
-
-cache:
-    ccache: true
-    apt: true
-    directories:
-      - $HOME/.ccache
-
-before_install:
-    - source src/build-scripts/ci-startup.bash
-    - export WHICHGCC=${WHICHGCC:="4.8"}
-    - if [ "$CXX" == "g++" ]; then export CXX="g++-${WHICHGCC}" ; fi
-
-install:
-    - if [ $TRAVIS_OS_NAME == osx ] ; then source src/build-scripts/install_homebrew_deps.bash ; fi
-    - if [ "$BUILD_CMAKE" == "1" ] ; then source src/build-scripts/build_cmake.bash ; fi
-    - source src/build-scripts/build_llvm.bash ;
-    - if [ $TRAVIS_OS_NAME == linux ] ; then source src/build-scripts/build_pybind11.bash ; fi
-    - if [ $TRAVIS_OS_NAME == linux ] ; then CXX="ccache $CXX" source src/build-scripts/build_openexr.bash ; fi
-
-      # Note: can remove the ILMBASE_HOME/OPENEXR_HOME when OIIO 2.x is floor
-    - export OPENIMAGEIO_MAKEFLAGS="$OPENIMAGEIO_MAKEFLAGS -j2 DEBUG= USE_PYTHON=0 OIIO_BUILD_TESTS=0"
-    - export ENABLE_iinfo=0 ENABLE_iv=0 ENABLE_igrep=0 ENABLE_iconvert=0 ENABLE_testtex=0
-    - export ENABLE_cineon=0 ENABLE_DDS=0 ENABLE_DPX=0 ENABLE_FITS=0
-    - export ENABLE_iff=0 ENABLE_jpeg2000=0 ENABLE_PNM=0 ENABLE_PSD=0
-    - export ENABLE_RLA=0 ENABLE_SGI=0 ENABLE_SOCKET=0 ENABLE_SOFTIMAGE=0
-    - export ENABLE_TARGA=0 ENABLE_WEBP=0 ENABLE_TARGA=0
-    - export OPENIMAGEIO_SITE=travis
-    - export OPENIMAGEIO_INSTALLDIR=$HOME/ext/OpenImageIO/dist/$ARCH
-    - export OSL_SITE=travis
-    - source src/build-scripts/build_openimageio.bash
-    - if [ $TRAVIS_OS_NAME == linux ] ; then
-          export BUILD_FLAGS="$BUILD_FLAGS LLVM_STATIC=1" ;
-          export TEST_FLAGS="-E broken\|render-cornell\|render-oren-nayar\|render-veachmis\|render-ward" ;
-      fi
-    # ^^^ Linux only, can't make these test work. Exclude for now and return later. ;
-
-# before_script:
-
-script:
-    - export LD_LIBRARY_PATH=$OpenImageIO_ROOT/lib:$OSL_ROOT/lib:$LD_LIBRARY_PATH
-    - export DYLD_LIBRARY_PATH=$OpenImageIO_ROOT/lib:$OSL_ROOT/lib:$DYLD_LIBRARY_PATH
-    - source src/build-scripts/ci-build-and-test.bash
-
-
-
-branches:
-  only:
-    - master
-    - /RB-/
-    - /lg-/
-
-matrix:
-    fast_finish: true
-    include:
-      - name: "VFX Platform 2018 (gcc6, c++14), llvm 7, OIIO master, OpenEXR 2.3, avx/f16c"
-        os: linux
-        compiler: gcc
-        addons:
-          apt:
-            sources: *add-sources
-            packages:
-              - *common-packages
-              - *common-boost-packages
-              - g++-6
-        env: WHICHGCC=6 USE_CPP=14 LLVM_VERSION=7.0.1 OPENIMAGEIO_BRANCH=master OPENEXR_VERSION=2.3.0 USE_SIMD=avx,f16c BUILD_CMAKE=1
-      - name: "MacOS (latest Apple clang, llvm 7, OIIO master, latest homebrew libs"
-        os: osx
-        compiler: clang
-        env: PYTHON_VERSION=3.7 USE_CPP=14
-      - name: "VFX Platform 2017 (gcc48, c++11), llvm 7, OIIO release, OpenEXR 2.3, sse4.2"
-        os: linux
-        dist: trusty
-        compiler: gcc
-        addons:
-          apt:
-            sources: *add-sources
-            packages:
-              - *common-packages
-              - *old-boost-packages
-        env: WHICHGCC=4.8 USE_CPP=11 LLVM_VERSION=7.0.1 USE_SIMD=sse4.2 OPENIMAGEIO_BRANCH=release OPENEXR_VERSION=2.3.0 BUILD_CMAKE=1
-      - name: "Older things: OIIO 2.0, llvm 7, boost 1.58, OpenEXR 2.2"
-        os: linux
-        dist: trusty
-        compiler: gcc
-        addons:
-          apt:
-            sources: *add-sources
-            packages:
-              - *common-packages
-              - *old-boost-packages
-        env: WHICHGCC=4.8 USE_CPP=11 LLVM_VERSION=7.0.1 USE_SIMD=sse4.2 OPENIMAGEIO_BRANCH=RB-2.0 OPENEXR_VERSION=2.2.0 BUILD_CMAKE=1
-        if: branch =~ /(master|RB|travis)/ OR type = pull_request
-      - name: "gcc7, llvm7, C++14"
-        os: linux
-        compiler: gcc
-        addons:
-          apt:
-            sources: *add-sources
-            packages:
-              - *common-packages
-              - *common-boost-packages
-              - g++-7
-        env: WHICHGCC=7 USE_CPP=14 LLVM_VERSION=7.0.0 BUILD_CMAKE=1
-        if: branch =~ /(master|RB|travis)/ OR type = pull_request
-      - name: "Future: gcc8, C++14, LLVM 7, OIIO master, AVX/f16c"
-        os: linux
-        compiler: gcc
-        addons:
-          apt:
-            sources: *add-sources
-            packages:
-              - *common-packages
-              - *common-boost-packages
-              - g++-8
-        env: WHICHGCC=8 USE_CPP=14 LLVM_VERSION=7.0.0 USE_SIMD=avx,f16c BUILD_CMAKE=1
-      - name: "DEBUG build, LLVM 7, OIIO master"
-        os: linux
-        compiler: gcc
-        addons:
-          apt:
-            sources: *add-sources
-            packages:
-              - *common-packages
-              - *common-boost-packages
-              - g++-6
-        env: DEBUG=1 WHICHGCC=6 LLVM_VERSION=7.0.0 OPENIMAGEIO_BRANCH=master BUILD_CMAKE=1
-      - name: "Oldest everything: gcc4.8, LLVM 7, OIIO 2.0, OpenEXR 2.2, no simd"
-        os: linux
-        dist: trusty
-        compiler: gcc
-        addons:
-          apt:
-            sources: *add-sources
-            packages:
-              - *common-packages
-              - *old-boost-packages
-        env: USE_SIMD=0 LLVM_VERSION=7.0.1 OPENIMAGEIO_BRANCH=RB-2.0 OPENEXR_VERSION=2.2.0 BUILD_CMAKE=1
-        if: branch =~ /(master|RB|travis)/ OR type = pull_request
-
-notifications:
-    email:
-#        recipients:
-#            - 
-        on_success: change
-        on_failure: always
@@ -1,58 +0,0 @@
-Corporate Contributor License Agreement ("Agreement")
-
-Thank you for your interest in the Open Shading Language Project a Series of
-LF Projects, LLC (hereinafter "Project"). In order to clarify the
-intellectual property licenses granted with Contributions from any corporate
-entity to the Project, LF Projects, LLC ("LF Projects") is required to have
-a Corporate Contributor License Agreement (CCLA) on file that has been
-signed by each contributing corporation.
-
-Each contributing corporation ("You") must accept and agree that, for any
-Contribution (as defined below), You and all other individuals and entities
-that control You, are controlled by You, or are under common control with
-You, are bound by the licenses granted and representations made as though
-all such individuals and entities are a single contributor. For the purposes
-of this definition, "control" means (i) the power, direct or indirect, to
-cause the direction or management of such entity, whether by contract or
-otherwise, or (ii) ownership of fifty percent (50%) or more of the
-outstanding shares, or (iii) beneficial ownership of such entity.
-
-"Contribution" means any code, documentation or other original work of
-authorship that is submitted to LF Projects for inclusion in the Project by
-Your employee or by any individual or entity that controls You, or is under
-common control with You or is controlled by You and authorized to make the
-submission on Your behalf.
-
-You accept and agree that all of Your present and future Contributions to
-the Project shall be:
-
-Submitted under a Developer's Certificate of Origin v. 1.1 (DCO); and
-Licensed under the BSD-3-Clause License.
-
-You agree that You shall be bound by the terms of the BSD-3-Clause License
-for all contributions made by You and Your employees. Your designated
-employees are those listed by Your CLA Manager(s) on the system of record
-for the Project. You agree to identify Your initial CLA Manager below and
-thereafter maintain current CLA Manager records in the Project's system of
-record.
-
-
-Initial CLA Manager (Name and Email): ______________________________________
-
-
-Corporate Signature:
-
-
-Company Name: ____________________________________________
-
-
-Signature: _______________________________________________
-
-
-Name: _______________________________________________
-
-
-Title _______________________________________________
-
-
-Date: _______________________________________________
@@ -0,0 +1,149 @@
+Project Name: Open Shading Language
+
+Project Entity: Open Shading Language Project a Series of LF Projects, LLC
+
+If emailing signed PDF, send to: manager@lfprojects.org
+
+**Software Grant and Corporate Contributor License Agreement ("Agreement") v2.1**
+
+Thank you for your interest in the project specified above (the “Project”). In
+order to clarify the intellectual property license granted with Contributions
+from any person or entity, the Project must have a Contributor License Agreement
+(CLA) on file that has been signed by each Contributor, indicating agreement to
+the license terms below. This license is for your protection as a Contributor as
+well as the protection of the Project and its users; it does not change your
+rights to use your own Contributions for any other purpose.
+
+This version of the Agreement allows an entity (the “Corporation”) to submit
+Contributions to the Project, to authorize Contributions submitted by its
+designated employees to the Project, and to grant copyright and patent licenses
+thereto.
+
+If you have not already done so, please complete and sign this Agreement using
+the electronic signature portal made available to you by the Project or its
+third-party service providers, or email a PDF of the signed agreement to the
+email address specified above. Please read this document carefully before
+signing and keep a copy for your records.
+
+You accept and agree to the following terms and conditions for Your present and
+future Contributions submitted to the Project. In return, the Project shall not
+use Your Contributions in a way that is contrary to the public benefit or
+inconsistent with its charter at the time of the Contribution. Except for the
+license granted herein to the Project and recipients of software distributed by
+the Project, You reserve all right, title, and interest in and to Your
+Contributions.
+
+1. Definitions.
+
+   “You” (or “Your”) shall mean the copyright owner or legal entity authorized by
+   the copyright owner that is making this Agreement with the Project. For legal
+   entities, the entity making a Contribution and all other entities that
+   control, are controlled by, or are under common control with that entity are
+   considered to be a single Contributor. For the purposes of this definition,
+   “control” means (i) the power, direct or indirect, to cause the direction or
+   management of such entity, whether by contract or otherwise, or (ii) ownership
+   of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial
+   ownership of such entity.
+
+   “Contribution” shall mean the code, documentation or other original works of
+   authorship, including any modifications or additions to an existing work, that
+   is intentionally submitted by You to the Project for inclusion in, or
+   documentation of, any of the products owned or managed by the Project (the
+   “Work”). For the purposes of this definition, “submitted” means any form
+   of electronic, verbal, or written communication sent to the Project or its
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+   are managed by, or on behalf of, the Project for the purpose of discussing and
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+
+2. Grant of Copyright License. Subject to the terms and conditions of this
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+   royalty-free, irrevocable copyright license to reproduce, prepare
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+   and distribute Your Contributions and such derivative works.
+
+3. Grant of Patent License. Subject to the terms and conditions of this
+   Agreement, You hereby grant to the Project and to recipients of software
+   distributed by the Project a perpetual, worldwide, non-exclusive, no-charge,
+   royalty-free, irrevocable (except as stated in this section) patent
+   license to make, have made, use, offer to sell, sell, import, and
+   otherwise transfer the Work, where such license applies only to
+   those patent claims licensable by You that are necessarily infringed
+   by Your Contribution(s) alone or by combination of Your
+   Contribution(s) with the Work to which such Contribution(s) were
+   submitted. If any entity institutes patent litigation against You or
+   any other entity (including a cross-claim or counterclaim in a
+   lawsuit) alleging that your Contribution, or the Work to which
+   you have contributed, constitutes direct or contributory patent
+   infringement, then any patent licenses granted to that entity under
+   this Agreement for that Contribution or Work shall terminate as of
+   the date such litigation is filed.
+
+4. You represent that You are legally entitled to grant the above license. You
+   represent further that the employee of the Corporation designated as the Initial
+   CLA Manager below (and each who is designated in a subsequent written
+   modification to the list of CLA Managers) (each, a “CLA Manager”) is
+   authorized to maintain with the Project (1) the list of employees of the
+   Corporation who are authorized to submit Contributions on behalf of the
+   Corporation, and (2) the list of CLA Managers.
+
+5. You represent that each of Your Contributions is Your original creation (see
+   section 7 for submissions on behalf of others).
+
+6. You are not expected to provide support for Your Contributions, except to the
+   extent You desire to provide support. You may provide support for free, for a
+   fee, or not at all. Unless required by applicable law or agreed to in writing,
+   You provide Your Contributions on an “AS IS” BASIS, WITHOUT WARRANTIES OR
+   CONDITIONS OF ANY KIND, either express or implied, including, without
+   limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT,
+   MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE.
+
+7. Should You wish to submit work that is not Your original creation, You may
+   submit it to the Project separately from any Contribution, identifying the
+   complete details of its source and of any license or other restriction
+   (including, but not limited to, related patents, trademarks, and license
+   agreements) of which you are personally aware, and conspicuously marking the
+   work as “Submitted on behalf of a third-party: [named here]”.
+
+8. It is your responsibility to notify the Project when any change is required
+   to the list of designated employees authorized to submit Contributions on behalf
+   of the Corporation, or to the list of the CLA Managers. 
+
+\[Please complete and sign on the next page.\]
+
+::: {style="page-break-after: always; visibility: hidden"}
+```{=tex}
+\pagebreak
+```
+:::
+
+Please sign:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Date:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+Signatory Name:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+Signatory E-mail:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+Signatory Title:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+Corporation Name:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+Corporation Address:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+Initial CLA Manager Name:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+Initial CLA Manager E-Mail:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
@@ -1,33 +0,0 @@
-Individual Contributor License Agreement ("Agreement")
-
-Thank you for your interest in the Open Shading Language Project a Series of
-LF Projects, LLC (hereinafter "Project"). In order to clarify the
-intellectual property licenses granted with Contributions from any corporate
-entity to the Project, LF Projects, LLC ("LF Projects") is required to have
-an Individual Contributor License Agreement (ICLA) on file that has been
-signed by each contributing individual. (For legal entities, please use the
-Corporate Contributor License Agreement (CCLA).)
-
-Each contributing individual ("You") must accept and agree that, for any
-Contribution (as defined below), You are bound by the licenses granted and
-representations made herein.
-
-"Contribution" means any code, documentation or other original work of
-authorship that is submitted to LF Projects for inclusion in the Project by
-You or by another person authorized to make the submission on Your behalf.
-
-You accept and agree that all of Your present and future Contributions to
-the Project shall be:
-
-Submitted under a Developer's Certificate of Origin v. 1.1 (DCO); and
-Licensed under the BSD-3-Clause License.
-
-
-
-Signature: __________________________________________
-
-
-Name: _______________________________________________
-
-
-Date: _______________________________________________
@@ -0,0 +1,137 @@
+Project Name: Open Shading Language
+
+Project Entity: Open Shading Language Project a Series of LF Projects, LLC
+
+If emailing signed PDF, send to: manager@lfprojects.org
+
+**Individual Contributor License Agreement ("Agreement") v2.1**
+
+Thank you for your interest in the project specified above (the “Project”). In
+order to clarify the intellectual property license granted with Contributions
+from any person or entity, the Project must have a Contributor License Agreement
+(CLA) on file that has been signed by each Contributor, indicating agreement to
+the license terms below. This license is for your protection as a Contributor as
+well as the protection of the Project and its users; it does not change your
+rights to use your own Contributions for any other purpose. 
+
+If you have not already done so, please complete and sign this Agreement using
+the electronic signature portal made available to you by the Project or its
+third-party service providers, or email a PDF of the signed agreement to the
+email address specified above. Please read this document carefully before
+signing and keep a copy for your records.
+
+You accept and agree to the following terms and conditions for Your present and
+future Contributions submitted to the Project. In return, the Project shall not
+use Your Contributions in a way that is contrary to the public benefit or
+inconsistent with its charter at the time of the Contribution. Except for the
+license granted herein to the Project and recipients of software distributed by
+the Project, You reserve all right, title, and interest in and to Your
+Contributions.
+
+1. Definitions.
+
+    “You” (or “Your”) shall mean the copyright owner or legal entity authorized by
+    the copyright owner that is making this Agreement with the Project. For legal
+    entities, the entity making a Contribution and all other entities that control,
+    are controlled by, or are under common control with that entity are considered
+    to be a single Contributor. For the purposes of this definition, “control”
+    means (i) the power, direct or indirect, to cause the direction or management
+    of such entity, whether by contract or otherwise, or (ii) ownership of fifty
+    percent (50%) or more of the outstanding shares, or (iii) beneficial ownership
+    of such entity.
+
+    “Contribution” shall mean the code, documentation or other original works of
+    authorship, including any modifications or additions to an existing work, that
+    is intentionally submitted by You to the Project for inclusion in, or
+    documentation of, any of the products owned or managed by the Project (the
+    “Work”). For the purposes of this definition, “submitted” means any form of
+    electronic, verbal, or written communication sent to the Project or its
+    representatives, including but not limited to communication on electronic
+    mailing lists, source code control systems, and issue tracking systems that are
+    managed by, or on behalf of, the Project for the purpose of discussing and
+    improving the Work, but excluding communication that is conspicuously marked or
+    otherwise designated in writing by You as “Not a Contribution.”
+
+2.  Grant of Copyright License. Subject to the terms and conditions of this
+    Agreement, You hereby grant to the Project and to recipients of software
+    distributed by the Project a perpetual, worldwide, non-exclusive, no-charge,
+    royalty-free, irrevocable copyright license to reproduce, prepare
+    derivative works of, publicly display, publicly perform, sublicense,
+    and distribute Your Contributions and such derivative works.
+
+3.  Grant of Patent License. Subject to the terms and conditions of this
+    Agreement, You hereby grant to the Project and to recipients of software
+    distributed by the Project a perpetual, worldwide, non-exclusive, no-charge,
+    royalty-free, irrevocable (except as stated in this section) patent
+    license to make, have made, use, offer to sell, sell, import, and
+    otherwise transfer the Work, where such license applies only to
+    those patent claims licensable by You that are necessarily infringed
+    by Your Contribution(s) alone or by combination of Your
+    Contribution(s)  with the Work to which such Contribution(s) were
+    submitted. If any entity institutes patent litigation against You or
+    any other entity (including a cross-claim or counterclaim in a
+    lawsuit) alleging that your Contribution, or the Work to which
+    you have contributed, constitutes direct or contributory patent
+    infringement, then any patent licenses granted to that entity under
+    this Agreement for that Contribution or Work shall terminate as of
+    the date such litigation is filed.
+
+4.  You represent that you are legally entitled to grant the above license. If
+    your employer(s) has rights to intellectual property that you create that
+    includes your Contributions, you represent that you have received permission to
+    make Contributions on behalf of that employer, that your employer has waived
+    such rights for your Contributions to the Project, or that your employer has
+    executed a separate Corporate CLA with the Project.
+
+5.  You represent that each of Your Contributions is Your original creation (see
+    section 7 for submissions on behalf of others). You represent that Your
+    Contribution submissions include complete details of any third-party license or
+    other restriction (including, but not limited to, related patents and
+    trademarks) of which you are personally aware and which are associated with
+    any part of Your Contributions.
+
+6.  You are not expected to provide support for Your Contributions, except to the
+    extent You desire to provide support. You may provide support for free, for a
+    fee, or not at all. Unless required by applicable law or agreed to in writing,
+    You provide Your Contributions on an “AS IS” BASIS, WITHOUT WARRANTIES OR
+    CONDITIONS OF ANY KIND, either express or implied, including, without
+    limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT,
+    MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE.
+
+7.  Should You wish to submit work that is not Your original creation, You may
+    submit it to the Project separately from any Contribution, identifying the
+    complete details of its source and of any license or other restriction
+    (including, but not limited to, related patents, trademarks, and license
+    agreements) of which you are personally aware, and conspicuously marking the
+    work as “Submitted on behalf of a third-party: [named here]”.
+
+8.  You agree to notify the Project of any facts or circumstances of which you
+    become aware that would make these representations inaccurate in any respect.
+
+\[Please complete and sign on the next page.\]
+
+::: {style="page-break-after: always; visibility: hidden"}
+```{=tex}
+\pagebreak
+```
+:::
+
+Please sign:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+Date: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+Full name:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+Mailing Address:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+------------------------------------------------------------------------
+
+------------------------------------------------------------------------
+
+Country:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
+
+E-Mail:
+\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
@@ -10,8 +10,9 @@ must comply with the terms of this Charter.
 ### 1. Mission and Scope of the Project

  * **a.** The mission of the Project is to develop an open source project
-    with the goals indicated in the "README" file within the Project's code
-    repository.
+    for programmable shading in advanced renderers and other applications,
+    ideal for describing materials, lights, displacement, and pattern 
+    generation.

  * **b.** The scope of the Project includes software development under an
    OSI-approved open source license supporting the mission, including
@@ -199,7 +200,7 @@ must comply with the terms of this Charter.

    - **i.** All new inbound code contributions to the Project must be made
      using the BSD 3-Clause License (available here:
-      https://github.com/imageworks/OpenShadingLanguage/blob/master/LICENSE)
+      https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/blob/master/LICENSE)
      (the "Project License").

    - **ii.** All new inbound code contributions must:
@@ -36,7 +36,7 @@ Additional attendees:

 * Charter / legalities
  - All the proposed documents are in this PR:
-    https://github.com/imageworks/OpenShadingLanguage/pull/1137
+    https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/1137
  - **Action**: Everybody please look over the charter, etc., give a +1,
    raise any objections or ask questions.
  - **Action**: Look at the CLA, show to your legal depts if they care. It's
@@ -4,27 +4,27 @@ This is a checklist for TSC's to review as part of the intake process. The TSC s

 - Existing Project Governance
  - [X] Project License exists ( [LICENSE.md](../LICENSE.md) ) and is OSI-approved
-  - [X] Any third-party components/dependencies included are listed along with thier licenses ( [THIRD_PARTY.md](../THIRD_PARTY.md) )
-  - [X] Governamce defined, outlining community roles and how decsions are made ( [GOVERNANCE.md](../GOVERNANCE.md] )
-    - Closed by https://github.com/imageworks/OpenShadingLanguage/pull/1137
+  - [X] Any third-party components/dependencies included are listed along with their licenses ( [THIRD_PARTY.md](../THIRD_PARTY.md) )
+  - [X] Governance defined, outlining community roles and how decsions are made ( [GOVERNANCE.md](../GOVERNANCE.md] )
+    - Closed by https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/1137
  - [X] Contribution Policy defined ( [CONTRIBUTING.md](../CONTRIBUTING.md) )
-    - Closed by https://github.com/imageworks/OpenShadingLanguage/pull/1137
+    - Closed by https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/1137
  - [X] Code of Conduct defined ( existing or pull from [ASWF Sample Project](https://github.com/AcademySoftwareFoundation/aswf-sample-project/blob/master/CODE_OF_CONDUCT.md) )
-    - Closed by https://github.com/imageworks/OpenShadingLanguage/pull/1137
+    - Closed by https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/1137
  - [ ] Release methodology defined	( [release.md](process/release.md) )
- New Project Goverance
+- New Project Governance
  - [X] TSC members identified
  - [X] First TSC meeting held
  - [X] TSC meeting cadence set and added to project calendar
-  - [ ] CLA Approved ( if used ) ( [CCLA](ccla.md) and [ICLA](icla.md) )
+  - [X] CLA Approved ( if used ) ( [CCLA](CLA-corporate.md) and [ICLA](CLA-individual.md) )
  - Project charter	( [charter.md](charter.md) )
    - [X] Approved by TSC
-      - Closed by https://github.com/imageworks/OpenShadingLanguage/pull/1137
-    - [ ] Filed ( create pull request against [foundation repo](https://github.com/AcademySoftwareFoundation/foundation) )
+      - Closed by https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/1137
+    - [X] Filed ( create pull request against [foundation repo](https://github.com/AcademySoftwareFoundation/foundation) )
 - Current tools
-  - [X] Source Control ( https://github.com/imageworks/OpenShadingLanguage )	
-	- [X] Issue/feature tracker ( https://github.com/imageworks/OpenShadingLanguage/issues )
-  - Collaboration tools 
+  - [X] Source Control ( https://github.com/AcademySoftwareFoundation/OpenShadingLanguage )
+	- [X] Issue/feature tracker ( https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/issues )
+  - Collaboration tools
    - [X] Mailing lists (old: http://groups.google.com/group/osl-dev )
      - [X] Move to groups.io ( create [issue on foundation repo](https://github.com/AcademySoftwareFoundation/foundation/issues/new ) to setup/transfer
    - [X] Slack or IRC ( #openshadinglanguage )
@@ -36,9 +36,9 @@ This is a checklist for TSC's to review as part of the intake process. The TSC s
 - Project assets
  - [X] Domain name
 	- [X] Logo(s)	( https://github.com/AcademySoftwareFoundation/artwork/blob/master/examples/incubating.md#open-shading-language-logos )
-	- [ ] Trademarks/mark ownership rights ( John to follow up with Larry on this )
+	- [X] Trademarks/mark ownership rights
 - Outreach
-  - [X] New project annoucement done ( https://www.aswf.io/osl-joins-aswf/ )
+  - [X] New project announcement done ( https://www.aswf.io/osl-joins-aswf/ )
  - [X] Project added to ASWF website and ASWF landscape
 - Graduation
  - [ ] CII Badge	achieved
@@ -48,6 +48,6 @@ This is a checklist for TSC's to review as part of the intake process. The TSC s
  - [X] TAC representative appointed
    - Chris Kulla, TSC chair, is our TAC rep for the project
  - [X]	License scan completed and no issues found
-    - Minor issues were found but already fixed in PR https://github.com/imageworks/OpenShadingLanguage/pull/1145
-  - [ ] Code repository imported to ASWF GitHub organization
-    - [ ] Developer Certificate of Origin past commit signoff done and DCO Probot enabled.
+    - Minor issues were found but already fixed in PR https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/1145
+  - [X] Code repository imported to ASWF GitHub organization
+  - [ ] Developer Certificate of Origin past commit signoff done and DCO Probot enabled.
@@ -1,7 +1,79 @@
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->
 <!-- Copyright Contributors to the Open Shading Language Project. -->

-Release 1.11 --1 Sept 2020 (compared to 1.10)
+Release 1.11.13 -- 1 Apr 2021 (compared to 1.11.12)
+----------------------------------------------------
+* Updated vector2.h with a `mod(vector2,vector2)` function. #1312
+* Fix unnecesary error messages to stderr when encountering broken point
+  clouds. #1333
+
+Release 1.11.12 -- 1 Mar 2021 (compared to 1.11.11)
+----------------------------------------------------
+* Build: Changes for smooth compile against upcoming Imath 3.0. #1332 #1341
+* Build: We weren't properly hiding non-public symbols. #1337
+* CI: Cleanup and get rid of the last Travis vestiges. #1334
+* CI: Speed up CI runs by using GHA cache + ccache. #1335
+* CI: Separate CI process into several individual "steps." #1338
+
+Release 1.11.11 -- 1 Feb 2021 (compared to 1.11.10)
+----------------------------------------------------
+* Build: Make the CMake build system more friendly to being a subproject.
+  #1304
+* Build: Improve dependency on Imath/OpenEXR include files.
+* CI: Fixes to Mac CI. #1315
+* Docs: Update CLAs, Charter, GOVERNANCE, particularly after acceptance of
+  new CLAs and moving the repo to the ASWF GitHub account. #1308 #1240 #1314
+* Internals: Switch from deprecated call to OIIO::parallel_image to the new
+  version. #1317
+
+Release 1.11.10 -- 1 Dec 2020 (compared to 1.11.9)
+---------------------------------------------------
+* Bug fix: optimizer interaction with output param that also is userdata.
+  #1295
+* Ensure that LoadMemoryCompiledShader returns false upon parse failure.
+  #1302
+* Work to ensure that OIIO will build correctly against the upcoming
+  Imath 3.0 and OpenEXR 3.0. #1299
+
+Release 1.11.9 -- 1 Nov 2020 (compared to 1.11.8)
+---------------------------------------------------
+* Build properly against Cuda 11 and OptiX 7.1. #1232
+* Windows compile fixes. #1263 #1285
+* PugiXML build fixes on some systems. #1262
+* Fix asymptomatic potential runtime optimizer bug where certain
+  multi-component values were not correctly recognized as nonzero. #1266
+* Fix false positive with "debug_uninit" where certain while loops might be
+  flagged as using uninitialized values when in fact they were not. #1252
+* Slightly optimize by not copying output params to layers that will not be
+  used. #1253
+* Internals: use the `final` keyword in certain internal classes where
+  applicable. #1260
+* Cuda/OptiX back end: Add `__CUDADEVRT_INTERNAL__` define to bitcode
+  generation, needed to avoid duplicate cudaMalloc symbols with CUDA9+ #1271
+* Fix build break against recent OIIO master change where m_mutex field was
+  removed from ImageInput. #1281
+
+Release 1.11.8 -- 1 Oct 2020 (compared to 1.11.7)
+---------------------------------------------------
+* Fix broken derivatives of the optional "alpha" return of texture calls
+  when the normal color channels return don't have their derivatives used
+  but the alpha does. #1258
+* Building vs Python: instead of defaulting to searching for python 2.7
+  specifically and needing to set PYTHON_VERSION if you want (or have) a
+  different one, default to whichever version is found. If multiple versions
+  of Python are on the system, you can still use the PYTHON_VERSION cmake
+  variable to disambiguate which one you want. #1249
+* For the experimental OptiX support, explicitly set the OptiX pipeline
+  stack size (fixes some bugs). #1254
+* ShadingSystem statistics output (which is printed with `testshade --help`,
+  by the way) now includes information about the SIMD capabilities specified
+  at OSL build time, those available at runtime, and the versions of LLVM,
+  OIIO, and Imath used. This should help in debugging and issue reporting
+  by making it easy to know certain build time choices just by running
+  testshade. #1258
+
+
+Release 1.11 -- 1 Sept 2020 (compared to 1.10)
 --------------------------------------------------
 ASWF adoption changes:
 * GOVERNANCE.md and ASWF/Technical-Charter.md document the project
@@ -107,8 +179,6 @@ OSL Standard library:
  color spaces. #1013 (1.11.0)
 * `cbrt()` cube root was added to the standard library. #1164 #1166 (1.11.6)

-Shaders:
-
 API changes, new options, new ShadingSystem features (for renderer writers):
 * `ShadingSystem::convert_value()` will now allow promotion of int or
  float to `float[4]`. #940 (1.11.0)
@@ -148,11 +218,14 @@ API changes, new options, new ShadingSystem features (for renderer writers):
  system attribute) now defaults to 1, not 0. That should be the best
  performance while still having reasonable JIT times. #1114 (1.11.4)
 * We no longer automatically build the MaterialX shaders (you need to set
-  build option OSL_BUILD_MATRIALX to ON). This will eventually be deprecated
+  build option OSL_BUILD_MATERIALX to ON). This will eventually be deprecated
  entirely. #1136 (1.11.5)
 * Helper varieties of ShadingSystem::Parameter() and ReParameter() that
  handle the common cases of a single float, int, or string. #1195 #1196
  (1.11.6)
+* `ShaingSystem::optimize_group()` now takes an optional parameter that
+  allows the caller to only do the optimize step without the JIT step.
+  #1226 (1.11.71)

 Continued work on experimental SIMD batched shading mode:
 * Continued work on SIMD-friendly math and noise: #1108 (1.11.4)
@@ -173,7 +246,7 @@ Continued work on experimental OptiX rendering:
 * Work on matrix ops. #1054 (1.11.1)
 * Allow init ops. #1059 (1.11.1)
 * Fixes to string closure params. #1061 (1.11.1)
-# Add support for OptiX 7 #1111 #1203 (1.11.6)
+* Add support for OptiX 7 #1111 #1203 (1.11.6)

 Performance improvements:
 * Constant fold array accesses even if they are out of bounds. #1035 (1.11.0)
@@ -185,8 +258,10 @@ Performance improvements:
 * Range checking of matrix component access is skipped for certain cases
  where it was unnecessary. #1174 (1.11.6)
 * LLVM JIT+optimize time has been sped up around 10% by doing a better job
-  of pruning unused functions and symbols in the generated modul. #1172
+  of pruning unused functions and symbols in the generated module. #1172
  (1.11.6)
+* `ShadingSystem::symbol_address()` no longer checks for the symbol to be
+  NULL (though it will assert on a debug build). #1237 (1.11.7.1)

 Bug fixes and other improvements (internals):
 * Fix bug in implementation of `splineinverse()` when computing with
@@ -229,13 +304,13 @@ Bug fixes and other improvements (internals):
 Internals/developer concerns:
 * Switch much of the internals where we do string formatting using printf-like
  conventions to errorf(), etc., naming convention, reserving the non-f
-  names for future use with C++20 std::format/python convenetions. #1076
+  names for future use with C++20 std::format/python conventions. #1076
  (1.11.3)
 * Remove pointless assertions from the TypeSpec class. #1079
 * Assertion overhaul: use OSL_ASSERT/OSL_DASSERT instead of borrowing from
  OIIO's dassert.h. Note that OSL_ASSERT always tests, prints error if the
  test fails, but then only aborts for debug builds (no abort for release
-  builds). In ocntrast, OSL_DASSERT does all for debug builds, and none
+  builds). In contrast, OSL_DASSERT does all for debug builds, and none
  (not even the test) for release builds. #1080 #1087 (1.11.3)
 * Refactor the implementation of the `Dual` template to support more
  efficient code generation when used in vectorized loops (this will be
@@ -278,21 +353,48 @@ Build & test system improvements:
      hidden that is not part of the public API.
    - The ENABLERTTI build option has been renamed `ENABLE_RTTI`.
    - Config based install and usage.
-* Testshade makes sure that no unreported errors accumulted in the texture
-  system or image cache. #939 (1.11.0)
-* testshade: Check that no leftover errors are in the TextureSystem or
-  ImageCache at the end of the test (that would indicate that someplace in
-  OSL we are failing to check texture errors). #939 (1.10.3/1.11.0)
+* testshade:
+    - Make sure that no unreported errors accumulated in the texture system
+      or image cache. #939 (1.11.0)
+    - Check that no leftover errors are in the TextureSystem or ImageCache
+      at the end of the test (that would indicate that someplace in OSL we
+      are failing to check texture errors). #939 (1.10.3/1.11.0)
+    - `testshade -o` : now `null` as the filename will not produce any
+      output.  This is handy to mark a renderer output but without storing
+      the results as an image. #1193 (1.11.6)
+    - `--vary_pdxdy`, `--vary_udxdy` and `--vary_vdxdy` allow a way to
+      force P, u, v to have varying derivatives (for testing purposes).
+      #1227 (1.11.7.1)
+* Supporting dependencies:
+    - Build script finding of LLVM is now more robust to certain library
+      configurations of llvm, particularly where everything is bundled in
+      just one libLLVM without a separate libLLVMMCJIT. #976 (1.10.4/1.11.0)
+    - Support for LLVM 4 has been dropped. #981 (1.11.0)
+    - Simplified finding of flex/bison, rely more on CMake's built-in
+      flex/bison find packages. #977 (1.11.0)
+    - Verified that OSL can be built with Clang 8 and LLVM 8.0.
+    - When building against recent OIIO versions whose Sysutil supports
+      stack dumps, crashes in the command line tools (including testshade)
+      will print stack traces to aid debugging. #1019 (1.11.0)
+    - Improve finding of OpenEXR/IlmBase. #1022 (1.11.0)
+    - Fix problems when building against Qt 5.13 due to deprecated calls.
+      #1043 (1.11.0)
+    - Fixes for CI when using OIIO 2.1 master that has changed its own cmake
+      minimum to 3.12. #1065 (1.11.1)
+    - Improvement for how the build system figures out which LLVM static
+      libraries are needed. #1070 (1.11.1)
+    - Improvements in finding Partio. #1125 (1.11.5)
+    - Fixes to support Qt 5.15 (currently, osltoy is the only component that
+      uses Qt). #1204 (1.11.6)
+    - Better able to find LLVM when the system installation of LLVM has its
+      llvm-config named `llvm-config-64`. #1238 (1.11.7.1)
+    - Fixes for OIIO 2.2 which has eliminated use of tinyformat in favor of
+      always relying on fmtlib. #1242 (1.11.7.1)
+    - Address problem with LLVM 10.0.1 on Mac when installed by Homebrew.
+      #1245 (1.11.7.2)
 * A new build-time CMake variable `OSL_LIBNAME_SUFFIX` lets you optionally
  add a custom suffix to the main libraries that are built. (Use with
  caution.) #970 (1.11.0)
-* Build script finding of LLVM is now more robust to certain library
-  configurations of llvm, particularly where everything is bundled in just
-  one libLLVM without a separate libLLVMMCJIT. #976 (1.10.4/1.11.0)
-* Support for LLVM 4 has been dropped. #981 (1.11.0)
-* Simplified finding of flex/bison, rely more on CMake's built-in flex/bison
-  find packages. #977 (1.11.0)
-* Verified that OSL can be built with Clang 8 and LLVM 8.0.
 * Add a build-time option GLIBCXX_USE_CXX11_ABI to force the "new/old string
  ABI" to something other than the default for your version of gcc. #995
  (1.10.5/1.11.0)
@@ -302,25 +404,15 @@ Build & test system improvements:
  #956 (1.10.0)
 * When OptiX mode is enabled (USE_OPTIX=1), the testsuite will some tests in
  an additional time forcing OptiX mode: any test containing a file named
-  `OPTIX` in its test directory; or all tests if enviroment variable
+  `OPTIX` in its test directory; or all tests if environment variable
  `TESTSUITE_OPTIX=1` (except tests that contain a file named `NOOPTIX` in
  their directory. #1004 (1.10.0)
 * Allow OSL to build with `USE_LLVM_BITCODE` enabled on Windows. #998 (1.10.0)
 * Various Windows compilation improvements. #1017 #1020
-* When building against recent OIIO versions whose Sysutil supports stack
-  dumps, crashes in the command line tools (including testshade) will
-  print stack traces to aid debugging. #1019 (1.11.0)
-* Improve finding of OpenEXR/IlmBase. #1022 (1.11.0)
 * Fix signed/unsigned comparison warnings. #1037 (1.11.0)
-* Fix problems when building against Qt 5.13 due to deprecated calls. #1043
-  (1.11.0)
 * Fixes for MinGW compiler on Windows. #1047 #1048 (1.11.0)
-* Fixes for CI when using OIIO 2.1 master that has changed its own cmake
-  minimum to 3.12. #1065 (1.11.1)
 * Scripts and tests utilizing Python have all been visited to make sure they
  are compatible with both Python 2.x and Python 3.x. #1071 (1.11.1)
-* Improvement for how the build system figures out which LLVM static
-  libraries are needed. #1070 (1.11.1)
 * Build: on OSX, better logic about the OIIO plugin must be built as a
  module or as a shared library. #1078 (1.11.3/1.10.8)
 * Removed support for Boost Wave for preprocessing osl input. We now always
@@ -330,19 +422,18 @@ Build & test system improvements:
  up during testing, mostly related to unused function paramters. #1106 (1.11.3)
 * The testsuite can run in parallel, with a number of threads set by the
  environment variable `CTEST_PARALLEL_LEVEL`. #1119 (1.11.4)
-* Improvements in finding Partio. #1125 (1.11.5)
 * oslconfig.h is now generated by a cmake configure_file step, from
  oslconfig.h.in. #1141 (1.11.5)
 * Use ASWF docker images to speed up many of the CI matrix entries, as well
-  as to excactly test several VFX Platform specs. #1169 (1.11.6)
+  as to exactly test several VFX Platform specs. #1169 (1.11.6)
 * Fix typo that botched the version in the .pc pkgconfig file. #1168 (1.11.6)
 * CI test against gcc9 and gcc10. #1192 (1.11.6)
 * Propagate RTTI compile options to exported cmake config. #1194 (1.11.6)
-* `testshade -o` : now `null` as the filename will not produce any output.
-  This is handy to mark a renderer output but without storing the results
-  as an image. #1193 (1.11.6)
-* Fixes to support Qt 5.15 (currently, osltoy is the only component that
-  uses Qt). #1204 (1.11.6)
+* New file .git-blame-ignore-revs lists the hashes of commits that only
+  performed bulk reformatting, so that they don't misattribute authorship
+  or modification date. Everybody do this in your local repo:
+  `git config blame.ignoreRevsFile .git-blame-ignore-revs`
+  #1244 (1.11.7.2)

 Documentation:
 * Make it clear that the documentation is licensed under the CC-BY-4.0
@@ -352,6 +443,12 @@ Documentation:
  deformer. #1199 (1.11.6)
 * `testrender` now contains a progressive sampler, which might be a good
  example for others writing renderers. #1202 (1.11.6)
+* Fix incorrect descripton in `spline()` regarding the number of spline
+  values required for each interpolation type. #1239 (1.11.7.1)
+* Extensive fixing of typos and misspellings in docs and comments. #1243
+  (1.11.7.2)
+* Renamed "LICENSE-THIRD-PARTY.md" to "THIRD-PARTY.md" to avoid confusing
+  GitHub's reporting of the project's license. (1.11.7.2)


 Release 1.10.13 -- 1 Aug 2020 (compared to 1.10.12)
@@ -607,7 +704,7 @@ Shaders:
    * mandelbrot.osl: computes Mandelbrot and Julia images. #827 (1.10.0)
 * MaterialX support:
    * Improved support for MaterialX 1.36: add sin, cos, tan, atan2, ceil,
-      sqrt, exp, determinent, ln, transpose, sign, rotate, transforms,
+      sqrt, exp, determinant, ln, transpose, sign, rotate, transforms,
      rgb/hsv convert, extract, separate, tiledimage. Rename exponent ->
      power, pack -> combine, hsvadjust -> hueshift. Add some color2/4
      mutual conversion operators. Fixes to ramp4, clean up texture mapping
@@ -665,7 +762,7 @@ API changes, new options, new ShadingSystem features (for renderer writers):
 Bug fixes and other improvements (internals):
 * The context's `texture_thread_info` is now properly passed to the
  RenderServices callbacks instead of passing NULL. (1.10.0)
-* Symbols are enbled in the JIT, allowing Intel Vtune profiler to correctly
+* Symbols are enabled in the JIT, allowing Intel Vtune profiler to correctly
  report which JITed OSL code is being executed. #830 (1.10.0)
 * ASTNode and OSLCompilerImpl -- add info() and message() methods to
  complement the existing error and warning. #854 (1.10.0)
@@ -746,7 +843,7 @@ Release 1.9.10 -- 1 Sep 2018 (compared to 1.9.9)
 * Add more functions to color2.h, color4.h, vector2.h, vector4.h: ceil,
  sqrt, exp, log2, log, sign, sin, cos, tan, asin, acos, atan2. #903, #904
 * Improved support for MaterialX 1.36: add sin, cos, tan, atan2, ceil, sqrt,
-  exp, determinent, ln, transpose, sign, rotate, transforms, rgb/hsv convert,
+  exp, determinant, ln, transpose, sign, rotate, transforms, rgb/hsv convert,
  extract, separate, tiledimage. Rename exponent -> power, pack -> combine,
  hsvadjust -> hueshift. Add some color2/4 mutual conversion operators.
  Fixes to ramp4, clean up texture mapping nodes, fixes to triplanarprojection
@@ -831,7 +928,7 @@ Standard library additions/changes:
 * `smoothstep()` has been extended to `T smoothstep(T edge0, T edge1, T x)`
  for T of any the `triple` types (previously, `smoothstep` only came in
  the `float` variety). #765 (1.9.0/1.8.10)
-* `mix()` has been extenended to support
+* `mix()` has been extended to support
      `color closure mix (color closure A, color closure B, color x)`
  #766 (1.9.0/1.8.10)
 * `hashnoise()` is like cellnoise (1D, 2D, 3D, or 4D input, 1D or 4D output
@@ -1028,7 +1125,7 @@ Developer goodies:
  This lets you use the `Dual` templates for automatic differentiation of
  of ordinary 1D functions (e.g., `Dual<float,1>`) or 3D volumetric
  computations (e.g., `Dual<float,3>`). Most of OSL internals use automatic
-  differentiation on 2 dimenstions (`Dual<float,2>` a.k.a. `Dual2<float>`),
+  differentiation on 2 dimensions (`Dual<float,2>` a.k.a. `Dual2<float>`),
  but this change makes `dual.h` a lot more useful outside of OSL.
  #803 (1.9.1)

@@ -1168,7 +1265,7 @@ Language features:
  nested `{ {...}, {...} }`.  #640 (1.8.0)
 * oslc (and liboslcomp) now supports UTF-8 filenames, including on
  Windows. #643 (1.8.0)
-* osl now accepts hexidecimal integer constants (such as `0x01ff`).
+* osl now accepts hexadecimal integer constants (such as `0x01ff`).
  #653 (1.8.1)

 Standard library additions/changes:
@@ -1184,7 +1281,7 @@ Standard library additions/changes:
  message passed to the renderer (leaving error handling and reporting
  entirely up to the shader). #686 (1.8.2)
 * `select(a,b,cond)` is similar to `mix`, but without interpolation --
-  if cond is 0, returns a, else return b (per comonent). #696 (1.8.3)
+  if cond is 0, returns a, else return b (per component). #696 (1.8.3)

 API changes, new options, new ShadingSystem features (for renderer writers):
 * ShadingSystem API changes:
@@ -1214,7 +1311,7 @@ API changes, new options, new ShadingSystem features (for renderer writers):
    * When the attribute "profile" is set, the statistics report will
      include a count of the total number of noise calls. #642 (1.8.0)
    * ShadingSystem and shader group attribute "exec_repeat" (int; default is
-      1) can artifically manipulate how many times the shader is executed.
+      1) can artificially manipulate how many times the shader is executed.
      This can sometimes be handy for tricky benchmarks. #659 (1.8.2)
    * Attribute "force_derivs" can force derivatives to be computed
      everywhere. (Mostly good for debugging or benchmarking derivatives,
@@ -1227,7 +1324,7 @@ Performance improvements:
  output parameters and what optimizations can be done based on that. #657
  (1.8.1)
 * Better runtime optimization of certain matrix constructors. #676 (1.8.2)
-* Improved alias analyis for parameters with simple initialization ops.
+* Improved alias analysis for parameters with simple initialization ops.
  #679 (1.8.2)
 * Runtime optimizer now constant-folds bitwise `&`, `|`, `^`, `~`
  operators. #682 (1.8.2)
@@ -1348,7 +1445,7 @@ Release 1.7.2 -- 1 Mar 2016 (compared to 1.7.1)

 Release 1.7 [1.7.1] -- 29 Jan 2016 (compared to 1.6)
 --------------------------------------------------
-Language, standard libary, and compiler changes (for shader writers):
+Language, standard library, and compiler changes (for shader writers):
 * Language features:
   * Support for closure arrays in shader inputs. #544 (1.7.0)
   * Disallow quote strings from spanning lines (just like you can't in
@@ -1359,7 +1456,7 @@ Language, standard libary, and compiler changes (for shader writers):
   * isconstant(expr) returns 1 if the expression can be turned into
     a constant at runtime (with full knowledge of the shader group's
     parameter values and connections). This is helpful mostly for advanced
-     shader writers to verify their assuptions about which expressions can
+     shader writers to verify their assumptions about which expressions can
     end up being fully constant-folded by the runtime optimizer. #578 (1.7.1)
   * New behavior of isconnected(parmaname): return 1 if the parameter
     is connected to an upstream layer, 2 if connected to a downstream layer,
@@ -1393,7 +1490,7 @@ API changes, new options, new ShadingSystem features (for renderer writers):
     users). (1.7.0)
   * "opt_passes" controls the number of optimization passes over each
     instance (default: 10). This is mainly for developer debugging, you
-     should not need to change or expost this. #576 (1.7.1)
+     should not need to change or expose this. #576 (1.7.1)
   * "connection_error" controls whether a bad connection is considered
     a true error (or is just ignored). #583 (1.7.1)
 * Shader group attribute additions/changes:
@@ -1491,7 +1588,7 @@ Documentation:

 Release 1.6 -- 26 May 2015 (compared to 1.5)
 -----------------------------------------------
-Language, standard libary, and compiler changes (for shader writers):
+Language, standard library, and compiler changes (for shader writers):
 * It is now supported to have shader parameters that are arrays of
  unspecified length (like 'float foo[] = {...}'). Their length will be
  fixed when they are assigned an instance value of fixed length, or when
@@ -1632,11 +1729,11 @@ Bug fixes and other improvements:
 * Improved detection of shader groups that optimize away to nothing. (1.6.2)
 * Fix of possible (but never reported) bug with instancing merging.
  #431 (1.6.2)
-* Fix incorrect oslc code generation when assigining an element of an
+* Fix incorrect oslc code generation when assigning an element of an
  array-of-structs to another element of array-of-structs. #432 (1.6.2)
 * Bug fix in code generation of constant folding of getmatrix() calls
  (never reported symptomatic). #440 (1.6.2)
-* Fixes to constuction of temporary filename used for group serialization
+* Fixes to construction of temporary filename used for group serialization
  archive. (1.6.2)
 * Internals fix: logb() incorrectly declaring derivative functions (it
  has no derivs). #437 (1.5.12/1.6.2)
@@ -1652,7 +1749,7 @@ Bug fixes and other improvements:
 * Bug fix: runtime optimizer should not consider a layer unused if its
  outputs are renderer outputs. Also fix subtle bug in detecting whether
  an output param is a renderer output. #457 (1.6.2)
-* Clear derivatives properly in the implementaiton of gettextureinfo.
+* Clear derivatives properly in the implementation of gettextureinfo.
  #463 (1.6.2)
 * Correct handling of point-like shader parameters defined with default
  values that use the constructors that provide "space" names. #465 (1.6.2)
@@ -1816,7 +1913,7 @@ API changes, new options, new ShadingSystem features (for renderer writers):
     a good way to "extract" a shader network from the midst of a complex
     renderer and then be able to reconstitute it inside a debugging test
     harness like testshade. (1.5.8) (#381) For more detail and explanation,
-     please see https://github.com/imageworks/OpenShadingLanguage/pull/381
+     please see https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/381
 * New per-ShaderGroup attributes:
   * ShadingSystem::getattribute(group,...) allows queries that retrieve
     all the names and types of userdata the compiled group may need
@@ -1,20 +1,24 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 cmake_minimum_required (VERSION 3.12)
-project (OSL VERSION 1.11.7.0
+project (OSL VERSION 1.11.13.0
         LANGUAGES CXX C
-         HOMEPAGE_URL "https://github.com/imageworks/OpenShadingLanguage")
+         HOMEPAGE_URL "https://github.com/AcademySoftwareFoundation/OpenShadingLanguage")
 set (PROJ_NAME ${PROJECT_NAME})    # short name
 string (TOLOWER ${PROJ_NAME} PROJ_NAME_LOWER)  # short name lower case
 string (TOUPPER ${PROJ_NAME} PROJ_NAME_UPPER)  # short name upper case
-set (PROJECT_VERSION_RELEASE_TYPE "dev")   # "dev", "betaX", "RCY", ""
+set (PROJECT_VERSION_RELEASE_TYPE "")   # "dev", "betaX", "RCY", ""
 set (${PROJECT_NAME}_VERSION_RELEASE_TYPE ${PROJECT_VERSION_RELEASE_TYPE})
+set (${PROJECT_NAME}_SUPPORTED_RELEASE 1)  # Change to 1 after release branch
 set (PROJECT_AUTHORS "Contributors to the Open Shading Language project")

-message (STATUS "Building ${PROJECT_NAME} ${PROJECT_VERSION}")
-message (STATUS "CMake version is ${CMAKE_VERSION}")
+# Identify whether this is included as a subproject of something else
+if (NOT "${CMAKE_PROJECT_NAME}" STREQUAL "${PROJECT_NAME}")
+    set (${PROJECT_NAME}_IS_SUBPROJECT ON)
+    message (STATUS "${PROJECT_NAME} is configuring as a CMake subproject")
+endif ()

 if (NOT CMAKE_BUILD_TYPE)
    set (CMAKE_BUILD_TYPE "Release")
@@ -127,20 +131,23 @@ list (APPEND CMAKE_MODULE_PATH
 # Helpful functions and macros for our project
 include (colors)
 include (check_is_enabled)
+include (checked_find_package)

-# All the C++ and compiler related options and adjustments live here
+# All the C++ and compiler related options and adjustments
 include (compiler)

+# Utilities and options related to finding python and making python bindings
+include (pythonutils)
+
 include (externalpackages)
 include (flexbison)
 include (cuda_macros)

-# Utilities related to finding python and making python bindings
-include (pythonutils)
+# Include all our testing apparatus and utils, but not if it's a subproject
+if (${PROJECT_NAME}_BUILD_TESTS AND NOT ${PROJECT_NAME}_IS_SUBPROJECT)
+    include (testing)
+endif ()

-# We want CTest for testing, so this must be added before all the calls to
-# add_subdirectory, or their add_test commands will not register.
-include (CTest)


 include_directories (
@@ -248,289 +255,9 @@ install (EXPORT OSL_EXPORTED_TARGETS



-#########################################################################
-# Testing
-
-# Make a build/platform/testsuite directory, and copy the master runtest.py
-# there. The rest is up to the tests themselves.
-file (MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/testsuite")
-file (COPY "${CMAKE_CURRENT_SOURCE_DIR}/testsuite/common"
-      DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/testsuite")
-add_custom_command (OUTPUT "${CMAKE_BINARY_DIR}/testsuite/runtest.py"
-                    COMMAND ${CMAKE_COMMAND} -E copy_if_different
-                        "${CMAKE_SOURCE_DIR}/testsuite/runtest.py"
-                        "${CMAKE_BINARY_DIR}/testsuite/runtest.py"
-                    MAIN_DEPENDENCY "${CMAKE_SOURCE_DIR}/testsuite/runtest.py")
-add_custom_target ( CopyFiles ALL DEPENDS "${CMAKE_BINARY_DIR}/testsuite/runtest.py" )
-
-# add_one_testsuite() - set up one testsuite entry
-#
-# Usage:
-#   add_one_testsuite ( testname
-#                  testsrcdir - Current test directory in ${CMAKE_SOURCE_DIR}
-#                  testdir    - Current test sandbox in ${CMAKE_BINARY_DIR}
-#                  [ENV env1=val1 env2=val2 ... ]  - env vars to set
-#                  [COMMAND cmd...] - optional override of launch command
-#                 )
-#
-macro (add_one_testsuite testname testsrcdir)
-    cmake_parse_arguments (_tst "" "" "ENV;COMMAND" ${ARGN})
-    set (testsuite "${CMAKE_SOURCE_DIR}/testsuite")
-    set (testdir "${CMAKE_BINARY_DIR}/testsuite/${testname}")
-    if (NOT _tst_COMMAND)
-        set (_tst_COMMAND python "${testsuite}/runtest.py" ${testdir})
-        if (MSVC_IDE)
-            list (APPEND _tst_COMMAND --devenv-config $<CONFIGURATION>
-                                      --solution-path "${CMAKE_BINARY_DIR}" )
-        endif ()
-    endif ()
-    list (APPEND _tst_ENV
-              OpenImageIO_ROOT=${OpenImageIO_ROOT}
-              OSL_SOURCE_DIR=${CMAKE_SOURCE_DIR}
-              OSL_BUILD_DIR=${CMAKE_BINARY_DIR}
-              OSL_TESTSUITE_ROOT=${testsuite}
-              OSL_TESTSUITE_SRC=${testsrcdir}
-              OSL_TESTSUITE_CUR=${testdir}
-         )
-    file (MAKE_DIRECTORY "${testdir}")
-    add_test ( NAME ${testname} COMMAND ${_tst_COMMAND} )
-    # message ("Test -- env ${_tst_ENV} cmd ${_tst_COMMAND}")
-    set_tests_properties (${testname} PROPERTIES ENVIRONMENT "${_tst_ENV}" )
-    # Certain tests are already internally multi-threaded, so to keep them
-    # from piling up together, allocate a few cores each.
-    if (${testname} MATCHES "^render-")
-        set_tests_properties (${testname} PROPERTIES LABELS render
-                              PROCESSORS 4 COST 10)
-    endif ()
-    # Some labeling for fun
-    if (${testname} MATCHES "^texture-")
-        set_tests_properties (${testname} PROPERTIES LABELS texture
-                              PROCESSORS 2 COST 4)
-    endif ()
-    if (${testname} MATCHES "noise")
-        set_tests_properties (${testname} PROPERTIES LABELS noise
-                              PROCESSORS 2 COST 4)
-    endif ()
-    if (${testname} MATCHES "optix")
-        set_tests_properties (${testname} PROPERTIES LABELS optix)
-    endif ()
-endmacro ()
+osl_add_all_tests()


-macro ( TESTSUITE )
-    cmake_parse_arguments (_ats "" "LABEL;FOUNDVAR;TESTNAME" "" ${ARGN})
-    # If there was a FOUNDVAR param specified and that variable name is
-    # not defined, mark the test as broken.
-    if (_ats_FOUNDVAR AND NOT ${_ats_FOUNDVAR})
-        set (_ats_LABEL "broken")
-    endif ()
-    set (test_all_optix $ENV{TESTSUITE_OPTIX})
-    # Add the tests if all is well.
-    set (ALL_TEST_LIST "")
-    set (_testsuite "${CMAKE_SOURCE_DIR}/testsuite")
-    foreach (_testname ${_ats_UNPARSED_ARGUMENTS})
-        set (_testsrcdir "${_testsuite}/${_testname}")
-        if (_ats_TESTNAME)
-            set (_testname "${_ats_TESTNAME}")
-        endif ()
-        if (_ats_LABEL MATCHES "broken")
-            set (_testname "${_testname}-broken")
-        endif ()
-
-        set (ALL_TEST_LIST "${ALL_TEST_LIST} ${_testname}")
-
-        # Run the test unoptimized, unless it matches a few patterns that
-        # we don't test unoptimized (or has an OPTIMIZEONLY marker file).
-        if (NOT _testname MATCHES "^getattribute-shader" AND
-            NOT _testname MATCHES "optix" AND
-            NOT EXISTS "${_testsrcdir}/OPTIMIZEONLY")
-            add_one_testsuite ("${_testname}" "${_testsrcdir}"
-                               ENV TESTSHADE_OPT=0 )
-        endif ()
-        # Run the same test again with aggressive -O2 runtime
-        # optimization, triggered by setting TESTSHADE_OPT env variable.
-        # Skip OptiX-only tests and those with a NOOPTIMIZE marker file.
-        if (NOT _testname MATCHES "optix"
-                AND NOT EXISTS "${_testsrcdir}/NOOPTIMIZE")
-            add_one_testsuite ("${_testname}.opt" "${_testsrcdir}"
-                               ENV TESTSHADE_OPT=2 )
-        endif ()
-        # When building for OptiX support, also run it in OptiX mode
-        # if there is an OPTIX marker file in the directory.
-        # If an environment variable $TESTSUITE_OPTIX is nonzero, then
-        # run all tests with OptiX, even if there's no OPTIX marker.
-        if (USE_OPTIX
-            AND (EXISTS "${_testsrcdir}/OPTIX" OR test_all_optix OR _testname MATCHES "optix")
-            AND NOT EXISTS "${_testsrcdir}/NOOPTIX"
-            AND NOT EXISTS "${_testsrcdir}/NOOPTIX-FIXME")
-            # Unoptimized
-            if (NOT EXISTS "${_testsrcdir}/OPTIMIZEONLY")
-                add_one_testsuite ("${_testname}.optix" "${_testsrcdir}"
-                                   ENV TESTSHADE_OPT=0 TESTSHADE_OPTIX=1 )
-            endif ()
-            # and optimized
-            add_one_testsuite ("${_testname}.optix.opt" "${_testsrcdir}"
-                               ENV TESTSHADE_OPT=2 TESTSHADE_OPTIX=1 )
-        endif ()
-    endforeach ()
-    if (VERBOSE)
-        message (STATUS "Added tests: ${ALL_TEST_LIST}")
-    endif ()
-endmacro ()
-
-if (OSL_BUILD_TESTS)
-# List all the individual testsuite tests here, except those that need
-# special installed tests.
-TESTSUITE ( aastep allowconnect-err and-or-not-synonyms arithmetic
-            array array-derivs array-range array-aassign
-            blackbody blendmath breakcont
-            bug-array-heapoffsets bug-locallifetime bug-outputinit
-            bug-param-duplicate bug-peep bug-return
-            cellnoise closure closure-array color comparison
-            compile-buffer
-            component-range
-            connect-components
-            const-array-params const-array-fill
-            debugnan debug-uninit
-            derivs derivs-muldiv-clobber
-            draw_string
-            error-dupes error-serialized
-            example-deformer
-            exit exponential
-            fprintf
-            function-earlyreturn function-simple function-outputelem
-            function-overloads function-redef
-            geomath getattribute-camera getattribute-shader
-            getsymbol-nonheap gettextureinfo
-            group-outputs groupstring
-            hash hashnoise hex hyperb
-            ieee_fp if incdec initlist initops intbits isconnected isconstant
-            layers layers-Ciassign layers-entry layers-lazy layers-lazyerror
-            layers-nonlazycopy layers-repeatedoutputs
-            linearstep
-            logic loop matrix message
-            mergeinstances-duplicate-entrylayers
-            mergeinstances-nouserdata mergeinstances-vararray
-            metadata-braces miscmath missing-shader
-            named-components
-            noise noise-cell
-            noise-gabor noise-gabor2d-filter noise-gabor3d-filter
-            noise-perlin noise-simplex
-            pnoise pnoise-cell pnoise-gabor pnoise-perlin
-            operator-overloading
-            opt-warnings
-            oslc-comma oslc-D oslc-M
-            oslc-err-arrayindex oslc-err-assignmenttypes
-            oslc-err-closuremul oslc-err-field
-            oslc-err-format oslc-err-funcoverload
-            oslc-err-intoverflow oslc-err-write-nonoutput
-            oslc-err-noreturn oslc-err-notfunc
-            oslc-err-initlist-args oslc-err-initlist-return
-            oslc-err-named-components
-            oslc-err-outputparamvararray oslc-err-paramdefault
-            oslc-err-struct-array-init oslc-err-struct-ctr
-            oslc-err-struct-dup oslc-err-struct-print
-            oslc-err-unknown-ctr
-            oslc-warn-commainit
-            oslc-variadic-macro
-            oslc-version
-            oslinfo-arrayparams oslinfo-colorctrfloat
-            oslinfo-metadata oslinfo-noparams
-            osl-imageio
-            paramval-floatpromotion
-            pragma-nowarn
-            printf-whole-array
-            raytype raytype-specialized reparam
-            render-background render-bumptest
-            render-cornell render-furnace-diffuse
-            render-microfacet render-oren-nayar render-veachmis render-ward
-            select shortcircuit spline splineinverse splineinverse-ident
-            spline-boundarybug spline-derivbug
-            string
-            struct struct-array struct-array-mixture
-            struct-err struct-init-copy
-            struct-isomorphic-overload struct-layers
-            struct-operator-overload struct-return struct-with-array
-            struct-nested struct-nested-assign struct-nested-deep
-            ternary
-            testshade-expr
-            texture-alpha texture-blur texture-connected-options
-            texture-derivs texture-errormsg
-            texture-firstchannel texture-interp
-            texture-missingalpha texture-missingcolor texture-simple
-            texture-smallderivs texture-swirl texture-udim
-            texture-width texture-withderivs texture-wrap
-            trailing-commas
-            transitive-assign
-            transform transformc trig typecast
-            unknown-instruction
-            userdata
-            vararray-connect vararray-default
-            vararray-deserialize vararray-param
-            vecctr vector
-            wavelength_color Werror xml )
-
-# Add tests that require the Python bindings if we built them.
-# We also exclude these tests if this is a sanitizer build on Linux,
-# because the Python interpreter itself won't be linked with the right asan
-# libraries to run correctly.
-if (USE_PYTHON AND NOT SANITIZE_ON_LINUX)
-    TESTSUITE ( python-oslquery )
+if (NOT ${PROJECT_NAME}_IS_SUBPROJECT)
+    include (packaging)
 endif ()
-
-# Only run field3d-related tests if the local OIIO was built with f3d support.
-EXECUTE_PROCESS ( COMMAND ${OPENIMAGEIO_BIN} --help
-                  OUTPUT_VARIABLE oiiotool_help )
-if (oiiotool_help MATCHES "field3d")
-    TESTSUITE ( texture-field3d )
-endif()
-
-# Only run pointcloud tests if Partio is found
-if (PARTIO_FOUND)
-    TESTSUITE ( pointcloud pointcloud-fold )
-endif ()
-
-# Only run the OptiX tests if OptiX and CUDA are found
-if (OPTIX_FOUND AND CUDA_FOUND)
-    TESTSUITE ( testoptix testoptix-noise )
-endif ()
-
-# FIXME: still working on MaterialX testsuite
-# add_subdirectory(testsuite/MaterialX)
-
-endif (OSL_BUILD_TESTS)
-
-
-
-#########################################################################
-# Packaging
-set (CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
-set (CPACK_PACKAGE_VERSION_MINOR ${PROJECT_VERSION_MINOR})
-set (CPACK_PACKAGE_VERSION_PATCH ${PROJECT_VERSION_PATCH})
-# "Vendor" is only used in copyright notices, so we use the same thing that
-# the rest of the copyright notices say.
-set (CPACK_PACKAGE_VENDOR ${PROJECT_AUTHORS})
-set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "OpenShadingLanguage is...")
-set (CPACK_PACKAGE_DESCRIPTION_FILE "${PROJECT_SOURCE_DIR}/src/doc/Description.txt")
-set (CPACK_PACKAGE_FILE_NAME ${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}-${platform})
-file (COPY "${PROJECT_SOURCE_DIR}/LICENSE" DESTINATION "${CMAKE_BINARY_DIR}")
-file (RENAME "${CMAKE_BINARY_DIR}/LICENSE" "${CMAKE_BINARY_DIR}/License.txt")
-set (CPACK_RESOURCE_FILE_LICENSE "${CMAKE_BINARY_DIR}/License.txt")
-file (COPY "${PROJECT_SOURCE_DIR}/README.md" DESTINATION "${CMAKE_BINARY_DIR}")
-file (RENAME "${CMAKE_BINARY_DIR}/README.md" "${CMAKE_BINARY_DIR}/Readme.txt")
-set (CPACK_RESOURCE_FILE_README "${CMAKE_BINARY_DIR}/Readme.txt")
-set (CPACK_RESOURCE_FILE_WELCOME "${PROJECT_SOURCE_DIR}/src/doc/Welcome.txt")
-#set (CPACK_PACKAGE_EXECUTABLES I'm not sure what this is for)
-#set (CPACK_STRIP_FILES Do we need this?)
-if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
-    set (CPACK_GENERATOR "TGZ;STGZ;RPM;DEB")
-    set (CPACK_SOURCE_GENERATOR "TGZ")
-endif ()
-if (APPLE)
-    set (CPACK_GENERATOR "TGZ;STGZ;PackageMaker")
-    set (CPACK_SOURCE_GENERATOR "TGZ")
-endif ()
-set (CPACK_SOURCE_PACKAGE_FILE_NAME ${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}-source)
-#set (CPACK_SOURCE_STRIP_FILES ...FIXME...)
-set (CPACK_SOURCE_IGNORE_FILES ".*~")
-include (CPack)
@@ -10,8 +10,8 @@ why it's an open source project. Please review this document to get a
 briefing on our process.


-Mail List
---------
+Mail List and Slack
+-------------------

 Contributors should be reading the osl-dev mail list:

@@ -19,12 +19,19 @@ Contributors should be reading the osl-dev mail list:

 You can sign up for the mail list on your own using the link above.

+We also have an `openshadinglanguage` channel on the
+[ASWF Slack](https://slack.aswf.io/). But note that the Slack channel is
+not archived, so while it's ok for fleeting comments, it is unreliable as
+a permanent repository of useful information. Serious discussions that are
+we would want to refer to over time should be sent to the mail list instead.
+

 Bug Reports and Issue Tracking
 ------------------------------

-We use GitHub's issue tracking system for bugs and enhancements:
-https://github.com/imageworks/OpenShadingLanguage/issues
+We use GitHub's issue tracking system for reporting bugs and requesting
+enhancements:
+https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/issues

 **If you are merely asking a question ("how do I...")**, please do not file an
 issue, but instead ask the question on the [OSL developer mail
@@ -48,41 +55,30 @@ Contributor License Agreement (CLA) and Intellectual Property
 To protect the project -- and the contributors! -- we do require a
 Contributor License Agreement (CLA) for anybody submitting changes.

-**While the repo is still under github.com/imageworks**
-
-* If you are an individual writing the code on your own time and you're SURE
-you are the sole owner of any intellectual property you contribute, use the
-[Individual CLA](http://opensource.imageworks.com/cla/pdf/Imageworks_Contributor_License_Agreement_Individual.pdf).
-
-* If you are writing the code as part of your job, or if there is any
-possibility that your employers might think they own any intellectual
-property you create, then you should use the [Corporate
-CLA](http://opensource.imageworks.com/cla/pdf/Imageworks_Contributor_License_Agreement_Corporate.pdf).
-
-Download the appropriate CLA from the links above, print, sign, and rescan
-it (or just add a digital signature directly), and email it to:
-opensource@imageworks.com
-
-Our CLA's are based on those used by Apache and many other open source
-projects.
-
-**After the repo is moved to github.com/AcademySoftwareFoundation**
-
-OSL uses EasyCLA for managing CLAs, which automatically checks to ensure
-CLAs are signed by a contributor before a commit can be merged.
-
-* If you are an individual writing the code on your own time and
-  you're SURE you are the sole owner of any intellectual property you
-  contribute, you can [sign the CLA as an individual contributor](https://github.com/communitybridge/easycla/blob/master/contributors/sign-a-cla-as-an-individual-contributor-to-github.md).
-
-* If you are writing the code as part of your job, or if there is any
+* [Corporate CLA](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/ASWF/OSL-CLA-corporate.md)
+  If you are writing the code as part of your job, or if there is any
  possibility that your employers might think they own any intellectual
-  property you create, then you should use the [Corporate Contributor
-  Licence Agreement](https://github.com/communitybridge/easycla/blob/master/contributors/contribute-to-a-github-company-project.md).
+  property you create. This needs to be executed by someone who has
+  signatory power for the company.
+
+* [Individual]((https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/ASWF/OSL-CLA-individual.md)).
+  If you are an individual writing the code on your own time and you're SURE
+  you are the sole owner of any intellectual property you contribute.
+
+The easiest way to sign CLAs is digitally [using EasyCLA](https://corporate.v1.easycla.lfx.linuxfoundation.org).
+Companies who prefer not to use the online tools may sign, scan, and email
+the executed copy to manager@lfprojects.org.
+
+The CLA allows a company to name a "CLA Manager" (who does not need
+signatory power) who has the ability to use the online system to add or
+delete individual employees of the company who are authorized to submit pull
+requests, without needing to get an executive to amend and sign the
+agreement each time.
+
+Please note that these CLAs are based on the Apache 2.0 CLAs, and differ
+minimally, only as much as was required to correctly describe the EasyCLA
+process and our use of a CLA manager.

-The OSL CLAs may be previewed here:
-[Corporate](https://github.com/imageworks/OpenShadingLanguage/ASWF/OSL-CLA-corporate.md),
-[Individual]((https://github.com/imageworks/OpenShadingLanguage/ASWF/OSL-CLA-individual.md)).

 ** Contribution sign off

@@ -115,7 +111,7 @@ The best way to submit changes is via GitHub Pull Request. GitHub has a
 All code must be formally reviewed before being merged into the official
 repository. The protocol is like this:

-1. Get a GitHub account, fork imageworks/OpenShadingLanguage to create your
+1. Get a GitHub account, fork AcademySoftwareFoundation/OpenShadingLanguage to create your
 own repository on GitHub, and then clone it to get a repository on your
 local machine.

@@ -309,7 +305,7 @@ Namespaces: yes, use them!
 Prefer C++11 `std` rather than Boost or other third party libraries, where
 both can do the same task.

-If you see a third party libary already used as a dependency (such as OIIO,
+If you see a third party library already used as a dependency (such as OIIO,
 Boost, Ilmbase, or LLVM), feel free to any of its public features in OSL
 internals (provided those features are present in the minimum version of
 that library that we support).
@@ -125,15 +125,15 @@ represents the project at all ASWF TAC meetings.

 ### TSC Members

-(Proposed list, subject to revision, some are placeholders while their
-organizations decide who should be the permanent representative)
+Current voting members of the TSC are:

-* **Chair and TAC repreentative**: Chris Kulla - Sony Pictures Imageworks
-* **Chief Architect**: Larry Gritz, Sony Pictures Imageworks
+* **Chair and TAC representative**: Chris Kulla - Epic Games
+* **Chief Architect**: Larry Gritz - Sony Pictures Imageworks

 * Luke Emrose - Animal Logic
 * Eric Enderton - NVIDIA
 * Stephen Friedman - Pixar
+* Nicolas Guiard - Isotropix
 * Derek Haase - DNEG
 * Adrien Herubel - Autodesk
 * Lee Kerley - Sony Pictures Imageworks
@@ -12,11 +12,11 @@ Dependencies
 OSL requires the following dependencies or tools.
 NEW or CHANGED dependencies since the last major release are **bold**.

-* Build system: [CMake](https://cmake.org/) 3.12 or newer (tested through 3.18)
+* Build system: [CMake](https://cmake.org/) 3.12 or newer (tested through 3.20)

 * A suitable C++11 compiler to build OSL itself, which may be any of:
   - GCC 4.8.5 or newer (tested through gcc 10)
-   - Clang 3.4 or newer (tested through clang 10)
+   - Clang 3.4 or newer (tested through clang 11)
   - Microsoft Visual Studio 2015 or newer
   - Intel C++ compiler icc version 13 (?) or newer

@@ -43,15 +43,15 @@ NEW or CHANGED dependencies since the last major release are **bold**.
    DYLD_LIBRARY_PATH on OS X) and then OSL's build scripts will be able
    to find it.

-* **[LLVM](http://www.llvm.org) 7, 8, 9, or 10**, including
+* **[LLVM](http://www.llvm.org) 7, 8, 9, 10, or 11**, including
  clang libraries.

-  Note that LLVM 10 is not compatible with C++11, and requires C++14 or
+  Note that LLVM 10+ is not compatible with C++11, and requires C++14 or
  later. If you *must* build OSL with C++11, you need to use an LLVM that
  is LLVM 9 or earlier.

-* [Boost](www.boost.org) 1.55 or newer (tested through boost 1.73)
-* [Ilmbase](http://openexr.com/downloads.html) 2.0 or newer (tested through 2.5)
+* [Boost](https://www.boost.org) 1.55 or newer (tested through boost 1.75)
+* [Ilmbase](http://openexr.com/downloads.html) 2.0 or newer (tested through 3.0)
 * [Flex](https://github.com/westes/flex) and
  [GNU Bison](https://www.gnu.org/software/bison/)
 * [PugiXML](http://pugixml.org/)
@@ -77,7 +77,7 @@ Here are the steps to check out, build, and test the OSL distribution:

 1. Check out a copy of the source code from the Git repository:

-        git clone https://github.com/imageworks/OpenShadingLanguage.git osl
+        git clone https://github.com/AcademySoftwareFoundation/OpenShadingLanguage.git osl

 2. Change to the distribution directory and 'make'

@@ -118,4 +118,4 @@ Here are the steps to check out, build, and test the OSL distribution:
 Troubleshooting
 ----------------

- [Build issues on macOS Catalina (fatal error: 'wchar.h' file not found)](https://github.com/imageworks/OpenShadingLanguage/issues/1055#issuecomment-581920327)
+- [Build issues on macOS Catalina (fatal error: 'wchar.h' file not found)](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/issues/1055#issuecomment-581920327)
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #########################################################################
 #
@@ -33,7 +33,7 @@ endif

 MY_MAKE_FLAGS ?=
 MY_NINJA_FLAGS ?=
-MY_CMAKE_FLAGS += -g3
+MY_CMAKE_FLAGS ?=
 BUILDSENTINEL ?= Makefile
 NINJA ?= ninja
 CMAKE ?= cmake
@@ -223,6 +223,22 @@ ifneq (${USE_OPTIX},)
  MY_CMAKE_FLAGS += -DUSE_OPTIX:BOOL=${USE_OPTIX}
 endif

+ifneq (${USE_PYTHON},)
+MY_CMAKE_FLAGS += -DUSE_PYTHON:BOOL=${USE_PYTHON}
+endif
+
+ifneq (${PYTHON_VERSION},)
+MY_CMAKE_FLAGS += -DPYTHON_VERSION:STRING=${PYTHON_VERSION}
+endif
+
+ifneq (${PYLIB_LIB_PREFIX},)
+MY_CMAKE_FLAGS += -DPYLIB_LIB_PREFIX:BOOL=${PYLIB_LIB_PREFIX}
+endif
+
+ifneq (${PYLIB_INCLUDE_SONAME},)
+MY_CMAKE_FLAGS += -DPYLIB_INCLUDE_SONAME:BOOL=${PYLIB_INCLUDE_SONAME}
+endif
+

 #$(info MY_CMAKE_FLAGS = ${MY_CMAKE_FLAGS})
 #$(info MY_MAKE_FLAGS = ${MY_MAKE_FLAGS})
@@ -307,7 +323,7 @@ test: build
 	    LD_LIBRARY_PATH=${INSTALL_PREFIX}/lib:${LD_LIBRARY_PATH} \
 	    DYLD_LIBRARY_PATH=${INSTALL_PREFIX}/lib:${DYLD_LIBRARY_PATH} \
 	    OIIO_LIBRARY_PATH=${INSTALL_PREFIX}/lib:${OIIO_LIBRARY_PATH} \
-	    PYTHONPATH=${working_dir}/${build_dir}/src/python:${PYTHONPATH} \
+	    PYTHONPATH=${working_dir}/${build_dir}/lib/python/site-packages:${PYTHONPATH} \
 	    ctest -E broken ${TEST_FLAGS} \
 	  )
 	@ ( if [[ "${CODECOV}" == "1" ]] ; then \
@@ -1,15 +1,13 @@
 <div align="center">
-  <img src="https://github.com/imageworks/OpenShadingLanguage/blob/master/src/doc/Figures/osl-short.png" width=256 height=128>
+  <img src="https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/blob/master/src/doc/Figures/osl-short.png" width=256 height=128>
+
+  <H1>Open Shading Language</H1>
 </div>

+[![Open Shading Language Reel 2020](http://img.youtube.com/vi/nmwMz1YnGPA/0.jpg)](https://www.youtube.com/watch?v=nmwMz1YnGPA "Open Shading Language Reel 2020")

-Open Shading Language
-=====================
-
-Build status:
-[![Build Status](https://github.com/imageworks/OpenShadingLanguage/workflows/CI/badge.svg)](https://github.com/imageworks/OpenShadingLanguage/actions)
-
-[![License](https://img.shields.io/badge/license-BSD%203--Clause-blue.svg?style=flat-square)](https://github.com/imageworks/OpenShadingLanguage/LICENSE)
+[![Build Status](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/workflows/CI/badge.svg)](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/actions)
+[![License](https://img.shields.io/badge/license-BSD%203--Clause-blue.svg?style=flat-square)](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/LICENSE.md)
 [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/3061/badge)](https://bestpractices.coreinfrastructure.org/projects/3061)


@@ -38,7 +36,7 @@ renderers used for high-end VFX and animation work. For a full list of films
 and products, see the [filmography](#where-osl-has-been-used).

 The OSL code is distributed under the
-["New/3-clause BSD" license](https://github.com/imageworks/OpenShadingLanguage/LICENSE),
+["New/3-clause BSD" license](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/LICENSE.md),
 and the documentation under the [Creative Commons Attribution 4.0 International
 License](https://creativecommons.org/licenses/by/4.0/).  In short, you are
 free to use OSL in your own applications, whether they are free or
@@ -332,7 +330,7 @@ Films using OSL (grouped by year of release date):
  The Kid Who Would Be King,
  Alita: Battle Angel,
  Lego Movie 2,
-  Lucky 13,
+  Lucky 13 (Love, Death, and Robots),
  Captain Marvel,
  Triple Frontier,
  Avengers: Endgame,
@@ -360,6 +358,10 @@ Films using OSL (grouped by year of release date):
  Greyhound,
  The Old Guard,
  Mulan,
+  Tenet,
+  The New Mutants,
+  The Eight Hundred,
+  Over the Moon,
  ...


@@ -386,12 +388,12 @@ Simple "how do I...", "I'm having trouble", or "is this a bug" questions are
 best asked on the [osl-dev developer mail
 list](https://lists.aswf.io/g/osl-dev).
 That's where the most people will see it and potentially be able to answer
-your question quickly (moreso than a GH "issue").
+your question quickly (more so than a GH "issue").

 Bugs, build problems, and discovered vulnerabilities that you are relatively
 certain is a legit problem in the code, and for which you can give clear
 instructions for how to reproduce, should be [reported as
-issues](https://github.com/imageworks/OpenShadingLanguage/issues).
+issues](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/issues).

 If confidentiality precludes a public question or issue, you may contact the
 project administrator privately at [lg@imageworks.com](lg@imageworks.com),
@@ -401,36 +403,33 @@ including for security-related issues.
 Contributing
 ------------

-OSL welcomes code contributions, and nearly 50 people
-have done so over the years. We take code contributions via the usual GitHub
-pull request (PR) mechanism. Please see [CONTRIBUTING](CONTRIBUTING.md) for
-detailed instructions.
+OSL welcomes code contributions, and nearly 50 people have done so over the
+years. We take code contributions via the usual GitHub pull request (PR)
+mechanism. Please see [CONTRIBUTING](CONTRIBUTING.md) for detailed
+instructions.


 Contacts, Links, and References
 -------------------------------

-[OSL GitHub page](https://github.com/imageworks/OpenShadingLanguage)
+[OSL GitHub page](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage)

 [Read or subscribe to the OSL development mail list](https://lists.aswf.io/g/osl-dev)

-Email the lead architect:  lg AT imageworks DOT com
-
-[Most recent PDF of the OSL language specification](https://github.com/imageworks/OpenShadingLanguage/blob/master/src/doc/osl-languagespec.pdf
+[Most recent PDF of the OSL language specification](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/blob/master/src/doc/osl-languagespec.pdf
 )

-[OSL home page at SPI](http://opensource.imageworks.com/?p=osl)
+[OSL home page at SPI](http://openshadinglanguage.org)

 [Sony Pictures Imageworks main open source page](http://opensource.imageworks.com)

-If you want to contribute code back to the project, you'll need to
-sign [a Contributor License Agreement](http://opensource.imageworks.com/cla/).


 Credits
 -------

-The current project leadership is documented in the GOVERNANCE.md file.
+The current project leadership is documented in the
+[Governance](GOVERNANCE.md) file.

 Many people have contributed features, bug fixes, and other changes to OSL
 over the years: Steve Agland, Shane Ambler, Martijn Berger, Farchad
@@ -469,9 +468,9 @@ developers and users at other VFX and animation studios.
 The OSL implementation depends upon several other open source packages,
 all with compatible licenses:

-* [OpenImageIO (c) Larry Gritz, et al](http://www.openimageio.org)
-* [Boost - various authors](http://www.boost.org)
-* [IlmBase (c) Industrial Light & Magic](http://www.openexr.com)
+* [OpenImageIO](http://www.openimageio.org)
+* [Boost](http://www.boost.org)
+* [IlmBase](http://www.openexr.com)
 * [LLVM Compiler Infrastructure](http://llvm.org)

 OSL's documentation incorporates parts of [Markdeep](https://casual-effects.com/markdeep/)
@@ -12,7 +12,7 @@ In no particular order:
 BSD 3-Clause License
 SPDX-License-Identifier: BSD-3-Clause

-* OpenImgageIO Copyright (c) Larry Gritz, et al.
+* OpenImageIO Copyright (c) Larry Gritz, et al.
  https://github.com/OpenImageIO/oiio

  Many bits of code flow back and forth between OIIO and OSL, especially
@@ -1,200 +0,0 @@
-# Copyright Contributors to the Open Shading Language project.
-# SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
-
-clone_depth: 10
-version: '{branch}-{build}'
-
-# Disable Appveyor's test discovery which is not used
-test: off
-
-branches:
-  only:
-    - master
-    - release
-    - appveyor
-    - /RB-/
-    - /lg-/
-
-skip_tags: true
-
-build:
-  parallel: true
-  verbosity: detailed
-
-platform:
-  - x64
-  # - x86
-
-configuration:
-  #- Debug
-  - Release
-
-environment:
-  matrix:
-  - TOOLSET: msvc14
-
-os:
-  - Visual Studio 2015
-
-cache:
-  - C:\projects\OSLdeps -> appveyor.yml
-  # The -> means that the cache dir is discarded if appveyor.yml has changed
-
-before_build:
- ps: |
-    $OSL_INSTALL_BEGIN=Get-Date
-    Write-Output "Configuration: $env:CONFIGURATION"
-    Write-Output "Platform: $env:PLATFORM"
-    ls C:\Program Files\LLVM
-    Get-ChildItem Env:
-
-    [Array]$OSL_BUILD_FLAGS = "--", "/nologo", "/verbosity:minimal";
-
-    $DWN_DIR = "C:\projects\OSLdownloads"
-    $DEP_DIR = "C:\projects\OSLdeps"
-    $BOOST_ROOT = "C:\Libraries\boost_1_69_0"
-    $PYTHON_DIR = "C:\Python27"
-    $LLVM_DIR = "C:\Program Files\LLVM\bin"
-    #$LLVM_DIR = "$DEP_DIR"
-    $env:Path += ";$DEP_DIR\lib;$DEP_DIR\bin"
-    $OSL_INT_DIR = "build\windows$env:PLATFORM"
-
-    # RDP into the build-bot to try some stuff out
-    # iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
-    # $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
-
-    # Choose the VisualStudio generator
-    $GENERATOR = switch ($env:TOOLSET)
-    {
-        "msvc14" {"Visual Studio 14 2015"}
-        "msvc12" {"Visual Studio 12 2013"}
-        "msvc11" {"Visual Studio 11 2012"}
-        "msvc10" {"Visual Studio 10 2010"}
-    }
-
-    # Final setup based on 64 or 32 bit
-    if ($env:PLATFORM -eq "x64") {
-        $GENERATOR = "$GENERATOR Win64"
-        $PYTHON_DIR = "$PYTHON_DIR-x64"
-        $BOOST_LIBRARYDIR = "$BOOST_ROOT\lib64-msvc-14.0"
-    } else {
-        $BOOST_LIBRARYDIR = "$BOOST_ROOT\lib32-msvc-14.0"
-    }
-
-    # Always create the download directory
-    md $DWN_DIR -Force | Out-Null;
-
-    # If the dependency directory exists/cached, use it
-    if(!(Test-Path -Path $DEP_DIR )){
-        md $DEP_DIR -Force | Out-Null; cd $DEP_DIR
-        md $DEP_DIR\include -Force | Out-Null; cd $DEP_DIR
-        md $DEP_DIR\lib -Force | Out-Null; cd $DEP_DIR
-
-        cd $DWN_DIR
-        nuget install libtiff-$env:TOOLSET-$env:PLATFORM-master -Version 4.0.6.85 -Source https://ci.appveyor.com/nuget/libtiff-i3h8tqqy7o7b
-        mv .\libtiff*\*.h $DEP_DIR\include\
-        mv .\libtiff*\*.lib $DEP_DIR\lib\
-        mv .\libtiff*\*.dll $DEP_DIR\lib\
-
-        nuget install libpng-$env:TOOLSET-$env:PLATFORM-master -Version 1.6.18.44 -Source https://ci.appveyor.com/nuget/libpng-7hwq4pmmrc48
-        mv .\libpng*\*.h $DEP_DIR\include\
-        mv .\libpng*\*.lib $DEP_DIR\lib\
-        mv .\libpng*\*.dll $DEP_DIR\lib\
-
-        nuget install libjpeg-$env:TOOLSET-$env:PLATFORM-master -Version 1.4.80.21 -Source https://ci.appveyor.com/nuget/libjpegturbo-o6k4js4y7pjw
-        mv .\libjpeg*\*.h $DEP_DIR\include\
-        mv .\libjpeg*\*.lib $DEP_DIR\lib\
-        mv .\libjpeg*\*.dll $DEP_DIR\lib\
-
-        nuget install freetype
-        mv .\freetype.2.8.0.1\build\native\include\* $DEP_DIR\include\
-        mv .\freetype.2.8.0.1\build\native\lib\$env:PLATFORM\v140\dynamic\$env:CONFIGURATION\*.lib $DEP_DIR\lib\
-        mv .\freetype.redist.2.8.0.1\build\native\bin\$env:PLATFORM\v140\dynamic\$env:CONFIGURATION\*.dll $DEP_DIR\lib\
-
-        # ZLib
-        cd $DWN_DIR
-        Start-FileDownload https://github.com/madler/zlib/archive/v1.2.8.tar.gz
-        tar -xzf v1.2.8.tar.gz; cd zlib-1.2.8; md "$OSL_INT_DIR" -Force | Out-Null; cd "$OSL_INT_DIR"
-        cmake ..\.. -G "$GENERATOR" -DCMAKE_CONFIGURATION_TYPES="$env:CONFIGURATION" -DCMAKE_PREFIX_PATH="$DEP_DIR" -DCMAKE_INSTALL_PREFIX="$DEP_DIR"
-        cmake --build . --config $env:CONFIGURATION --target INSTALL $OSL_BUILD_FLAGS
-
-        # IlmBase
-        cd $DWN_DIR
-        Start-FileDownload http://download.savannah.nongnu.org/releases/openexr/ilmbase-2.2.1.tar.gz
-        tar -xzf ilmbase-2.2.1.tar.gz ; cd ilmbase* ; md "$OSL_INT_DIR" -Force | Out-Null; cd "$OSL_INT_DIR"
-        cmake ..\.. -G "$GENERATOR" -DCMAKE_CONFIGURATION_TYPES="$env:CONFIGURATION" -DCMAKE_PREFIX_PATH="$DEP_DIR" -DCMAKE_INSTALL_PREFIX="$DEP_DIR" -DCMAKE_CXX_FLAGS=" /W1 /EHsc /DWIN32=1 "
-        cmake --build . --config $env:CONFIGURATION --target INSTALL $OSL_BUILD_FLAGS
-
-        # LLVM
-        # This shouldn't be necessary, we use the pre-installed LLVM
-        # cd $DWN_DIR
-        # git clone --depth 10 --branch release_40 https://github.com/llvm-mirror/llvm.git
-        # cd llvm; md "$OSL_INT_DIR" -Force | Out-Null; cd "$OSL_INT_DIR"
-        # cmake ..\.. -G "$GENERATOR" -DCMAKE_CONFIGURATION_TYPES="$env:CONFIGURATION" -DCMAKE_PREFIX_PATH="$DEP_DIR" -DCMAKE_INSTALL_PREFIX="$DEP_DIR" -DLLVM_TARGETS_TO_BUILD="X86"
-        # cmake --build . --config $env:CONFIGURATION --target INSTALL $OSL_BUILD_FLAGS
-
-        # OpenEXR
-        cd $DWN_DIR
-        Start-FileDownload http://download.savannah.nongnu.org/releases/openexr/openexr-2.2.1.tar.gz
-        tar -xzf openexr-2.2.1.tar.gz ; cd openexr* ; md "$OSL_INT_DIR" -Force | Out-Null; cd "$OSL_INT_DIR"
-        cmake ..\.. -G "$GENERATOR" -DCMAKE_CONFIGURATION_TYPES="$env:CONFIGURATION" -DCMAKE_PREFIX_PATH="$DEP_DIR" -DCMAKE_INSTALL_PREFIX="$DEP_DIR" -DILMBASE_PACKAGE_PREFIX="$DEP_DIR" -DCMAKE_CXX_FLAGS=" /W1 /EHsc /DWIN32=1 "
-        cmake --build . --config $env:CONFIGURATION --target INSTALL $OSL_BUILD_FLAGS
-
-    }
-
-    # Always do this
-    cinst winflexbison
-
-
-build_script:
- ps: |
-    # OpenImageIO
-    $env:OpenImageIO_ROOT = "C:\projects\oiio"
-    $env:FREETYPE_DIR = "$DEP_DIR"
-    $FREETYPE_LIBRARY = "$DEP_DIR\lib\freetype28.lib"
-    cd $DWN_DIR
-    git clone --depth 10 https://github.com/OpenImageIO/oiio.git oiiosrc
-    cd .\oiiosrc; md "$OSL_INT_DIR" -Force | Out-Null; cd "$OSL_INT_DIR"
-    cmake ..\.. -G "$GENERATOR" -DCMAKE_CONFIGURATION_TYPES="$env:CONFIGURATION" -DCMAKE_INSTALL_PREFIX="$env:OpenImageIO_ROOT" -DCMAKE_PREFIX_PATH="$DEP_DIR;$BOOST_ROOT" -DBOOST_LIBRARYDIR="$BOOST_LIBRARYDIR" -DFREETYPE_LIBRARY="$FREETYPE_LIBRARY" -DUSE_PYTHON=OFF -DOIIO_BUILD_TESTS=OFF -DUSE_NUKE=OFF
-    cmake --build . --config $env:CONFIGURATION --target INSTALL $OSL_BUILD_FLAGS
-
-    # Build OSL
-    cd $env:APPVEYOR_BUILD_FOLDER
-    md "$OSL_INT_DIR" -Force | Out-Null; cd "$OSL_INT_DIR"
-    cmake ..\.. -G "$GENERATOR" -DCMAKE_CONFIGURATION_TYPES="$env:CONFIGURATION" -DCMAKE_PREFIX_PATH="$env:OpenImageIO_ROOT;$DEP_DIR;$BOOST_ROOT;$LLVM_DIR" -DCMAKE_INSTALL_PREFIX="$DEP_DIR" -DLLVM_DIRECTORY="$LLVM_DIR" -DLLVM_STATIC=ON -DOpenImageIO_ROOT="$env:OpenImageIO_ROOT" -DBOOST_LIBRARYDIR="$BOOST_LIBRARYDIR" -DFLEX_EXECUTABLE="C:\ProgramData\chocolatey\lib\winflexbison\tools\win_flex.exe" -DBISON_EXECUTABLE="C:\ProgramData\chocolatey\lib\winflexbison\tools\win_bison.exe" -DUSE_QT=OFF -DBUILD_SHARED_LIBS=ON -DLINKSTATIC=OFF
-
-    # OSL's CMake should probably be handling Windows config better...
-    $OSL_BUILD_DIR = "$env:APPVEYOR_BUILD_FOLDER\$OSL_INT_DIR"
-    $env:OSL_ROOT = "$env:APPVEYOR_BUILD_FOLDER\src"
-    $env:OIIO_LIBRARY_PATH = "$OSL_BUILD_DIR\src\osl.imageio\$env:CONFIGURATION"
-    $env:Path += ";$OSL_BUILD_DIR\src\oslc\$env:CONFIGURATION"
-    $env:Path += ";$OSL_BUILD_DIR\src\oslinfo\$env:CONFIGURATION"
-    $env:Path += ";$OSL_BUILD_DIR\src\liboslcomp\$env:CONFIGURATION"
-    $env:Path += ";$OSL_BUILD_DIR\src\liboslexec\$env:CONFIGURATION"
-    $env:Path += ";$OSL_BUILD_DIR\src\liboslnoise\$env:CONFIGURATION"
-    $env:Path += ";$OSL_BUILD_DIR\src\liboslquery\$env:CONFIGURATION"
-    $env:Path += ";$env:OpenImageIO_ROOT\lib;$env:OpenImageIO_ROOT\bin"
-    $env:Path += ";$BOOST_LIBRARYDIR"
-
-    cmake --build . --config $env:CONFIGURATION $OSL_BUILD_FLAGS
-
-    $OSL_BUILD_END=Get-Date
-    if(($OSL_BUILD_END-$OSL_INSTALL_BEGIN).TotalMinutes -gt 50) {
-        # Change to appveyor.yml means the cache needs to be rebuilt leaving
-        # us with not enough time to run the tests.
-        echo "OSL tests skipped in favor of uploading dependency cache"
-        # Echo to build log and Appveyors message page
-        Add-AppveyorMessage -Message "OSL tests skipped in favor of uploading dependency cache" -Category Warning
-    } else {
-        # Test OSL
-        ctest -C $env:CONFIGURATION --output-on-failure
-    }
-
-
-#init:
-#- ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
-
-#on_failure:
-#- ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
-
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # SPI-specific settings
 ifneq (${VERBOSE},)
@@ -95,7 +95,6 @@ else
    $(error Unknown SP_OS=${SP_OS} platform=${platform})
 endif  # endif ${SP_OS}

-PYTHON_VERSION ?= 2.7
 MY_CMAKE_FLAGS += -DSP_OS=${SP_OS} -DSP_PLATFORM=${SP_PLATFORM}
 MY_CMAKE_FLAGS += -DSP_PROC=${SP_PROC} -DSP_REZ_OS=${SP_REZ_OS}
 MY_CMAKE_FLAGS += -DSPI_COMPILER_PLATFORM=${SPI_COMPILER_PLATFORM}
@@ -108,6 +107,7 @@ SPCOMP2_ROOT ?= /shots/spi/home/lib/SpComp2

 ## Rhel7 (current)
 ifeq (${SP_OS}, rhel7)
+    PYTHON_VERSION ?= 2.7
    USE_SIMD ?= sse4.1,aes
    CMAKE ?= cmake
    USE_NINJA ?= 1
@@ -217,46 +217,25 @@ ifeq (${SP_OS}, rhel7)
    #
    # Python
    #
-    PYTHON_INCLUDE_DIR ?= /usr/include/python${PYTHON_VERSION}
+    Python_INCLUDE_DIR ?= /usr/include/python${PYTHON_VERSION}
    PYTHON_LIBRARY_DIR ?= /usr/lib64
-    PYTHON_LIBRARY ?= ${PYTHON_LIBRARY_DIR}/libpython${PYTHON_VERSION}.so
+    Python_LIBRARY ?= ${PYTHON_LIBRARY_DIR}/libpython${PYTHON_VERSION}.so
    ifeq (${PYTHON_VERSION},3.6)
        # Special sauce for Python 3.6
-        PYTHON_INCLUDE_DIR := /usr/include/python${PYTHON_VERSION}m
-        PYTHON_LIBRARY := ${PYTHON_LIBRARY_DIR}/libpython${PYTHON_VERSION}m.so
-        MY_CMAKE_FLAGS += \
-            -DPYTHONINTERP_FOUND=1 \
-            -DPYTHON_VERSION_STRING=3.6.3 \
-            -DPYTHON_VERSION_MAJOR=3 \
-            -DPYTHON_VERSION_MINOR=6 \
-            -DPYTHON_VERSION_PATCH=3 \
-            -DPython_ADDITIONAL_VERSIONS="${PYTHON_VERSION}"
+        Python_INCLUDE_DIR := /usr/include/python${PYTHON_VERSION}m
+        Python_LIBRARY := ${PYTHON_LIBRARY_DIR}/libpython${PYTHON_VERSION}m.so
    else ifeq (${PYTHON_VERSION},3.7)
        # Special sauce for Python 3.7
-        PYTHON_INCLUDE_DIR := /usr/include/python${PYTHON_VERSION}m
-        PYTHON_LIBRARY := ${PYTHON_LIBRARY_DIR}/libpython${PYTHON_VERSION}m.so
-        MY_CMAKE_FLAGS += \
-            -DPYTHONINTERP_FOUND=1 \
-            -DPYTHON_VERSION_STRING=3.7.3 \
-            -DPYTHON_VERSION_MAJOR=3 \
-            -DPYTHON_VERSION_MINOR=7 \
-            -DPYTHON_VERSION_PATCH=3 \
-            -DPython_ADDITIONAL_VERSIONS="${PYTHON_VERSION}"
+        Python_INCLUDE_DIR := /usr/include/python${PYTHON_VERSION}m
+        Python_LIBRARY := ${PYTHON_LIBRARY_DIR}/libpython${PYTHON_VERSION}m.so
    else ifeq (${PYTHON_VERSION},2.7)
        # Special sauce for Python 2.7
-        PYTHON_INCLUDE_DIR := /usr/include/python${PYTHON_VERSION}
-        PYTHON_LIBRARY := ${PYTHON_LIBRARY_DIR}/libpython${PYTHON_VERSION}.so
-        MY_CMAKE_FLAGS += \
-            -DPYTHONINTERP_FOUND=1 \
-            -DPYTHON_VERSION_STRING=2.7.5 \
-            -DPYTHON_VERSION_MAJOR=2 \
-            -DPYTHON_VERSION_MINOR=7 \
-            -DPYTHON_VERSION_PATCH=5 \
-            -DPython_ADDITIONAL_VERSIONS="${PYTHON_VERSION}"
+        Python_INCLUDE_DIR := /usr/include/python${PYTHON_VERSION}
+        Python_LIBRARY := ${PYTHON_LIBRARY_DIR}/libpython${PYTHON_VERSION}.so
    endif
    MY_CMAKE_FLAGS += \
-        -DPYTHON_INCLUDE_DIR:STRING=${PYTHON_INCLUDE_DIR} \
-        -DPYTHON_LIBRARY:STRING=${PYTHON_LIBRARY} \
+        -DPython_INCLUDE_DIR:STRING=${Python_INCLUDE_DIR} \
+        -DPython_LIBRARY:STRING=${Python_LIBRARY} \
        -Dpybind11_ROOT:STRING=${REZ_PACKAGE_ROOT}/pybind11/2.4.3/python-${PYTHON_VERSION}


@@ -302,8 +281,8 @@ ifeq (${SP_OS}, rhel7)

    # Cuda/OptiX
    USE_OPTIX ?= 1
-    CUDA_VERSION ?= 10.1u2
-    OPTIX_VERSION ?= 6.0.0
+    CUDA_VERSION ?= 11.0.1
+    OPTIX_VERSION ?= 7.1.0
    # CUDA_TOOLKIT_ROOT_DIR = $(shell rez-env -b cuda-${CUDA_VERSION} ${SPI_COMPILER_PLATFORM} -c "echo '$CUDA_TOOLKIT_ROOT'")
    CUDA_TOOLKIT_ROOT_DIR ?= /shots/spi/home/lib/arnold/rhel7/cuda_${CUDA_VERSION}
    CUDA_EXTRA_LIBS ?= ${CUDA_TOOLKIT_ROOT_DIR}/lib64/libnvrtc.so
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 option (${PROJ_NAME}_SPIREZ "Enable extra bits for building for SPI Rez install" OFF)
 set (${PROJ_NAME}_REZ_PACKAGE_NAME CACHE STRING "${PROJECT_NAME}")
@@ -2,7 +2,7 @@

 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # This helper script takes a major.minor.patch semantic version string
 # ("2.1.1") and reformats it into the dot-less zero-padded version like
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 cmake_minimum_required(VERSION 2.8)

@@ -2,7 +2,7 @@
 #
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
 #
 # Documentation on packages and available attributes can be found at:
 # https://github.com/nerdvegas/rez/wiki/Package-Definition-Guide
@@ -1,10 +1,10 @@
-#!/bin/bash
+#!/usr/bin/env bash

 # Utility script to download and build cmake
 #
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # Exit the whole script if any command fails.
 set -ex
@@ -16,10 +16,25 @@ CMAKE_VERSION=${CMAKE_VERSION:=3.12.4}
 LOCAL_DEPS_DIR=${LOCAL_DEPS_DIR:=${PWD}/ext}
 CMAKE_INSTALL_DIR=${CMAKE_INSTALL_DIR:=${LOCAL_DEPS_DIR}/cmake}

-if [[ `uname` == "Linux" ]] ; then
-    mkdir -p ${CMAKE_INSTALL_DIR} && true
+if [[ `uname` == "Linux" && `uname -m` == "x86_64" ]] ; then
+    mkdir -p ${CMAKE_INSTALL_DIR} || true
    curl --location "https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-Linux-x86_64.sh" -o "cmake.sh"
    sh cmake.sh --skip-license --prefix=${CMAKE_INSTALL_DIR}
    export PATH=${CMAKE_INSTALL_DIR}/bin:$PATH
 fi

+if [[ `uname` == "Linux" && `uname -m` == "aarch64" ]] ; then
+    mkdir -p ${CMAKE_INSTALL_DIR} || true
+    curl --location https://anaconda.org/conda-forge/cmake/3.17.0/download/linux-aarch64/cmake-3.17.0-h28c56e5_0.tar.bz2 -o cmake-3.17.0-h28c56e5_0.tar.bz2
+    tar -xjvf cmake-3.17.0-h28c56e5_0.tar.bz2 -C ${CMAKE_INSTALL_DIR}
+    export PATH=${CMAKE_INSTALL_DIR}/bin:$PATH
+
+    # In case we ever need to build from scratch:
+    # curl --location "https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}.tar.gz" -o cmake.tar.gz
+    # tar xzf cmake.tar.gz
+    # pushd cmake-${CMAKE_VERSION}
+    # CXX="ccache $CXX" ./bootstrap --parallel=${PARALLEL:=4} --enable-ccache
+    # CXX="ccache $CXX" timeout 2100 time make ${PAR_MAKEFAGS} || true
+    # export PATH=${CMAKE_INSTALL_DIR}/bin:$PWD/bin:$PATH
+    # popd
+fi
@@ -4,7 +4,7 @@
 #
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # Exit the whole script if any command fails.
 set -ex
@@ -29,7 +29,7 @@ if [[ `uname` == "Linux" ]] ; then
    fi
    LLVMTAR=clang+llvm-${LLVM_VERSION}-x86_64-linux-gnu-${LLVM_DISTRO_NAME}.tar.xz
    echo LLVMTAR = $LLVMTAR
-    if [ "$LLVM_VERSION" == "10.0.0" ] ; then
+    if [[ "$LLVM_VERSION" == "10.0.0" ]] || [[ "$LLVM_VERSION" == "11.0.0" ]] ; then
        # new
        curl --location https://github.com/llvm/llvm-project/releases/download/llvmorg-${LLVM_VERSION}/${LLVMTAR} -o $LLVMTAR
    else
@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+
+# Copyright Contributors to the Open Shading Language project.
+# SPDX-License-Identifier: BSD-3-Clause
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
+
+# Utility script to download and build OpenColorIO
+
+# Exit the whole script if any command fails.
+set -ex
+
+# Which OCIO to retrieve, how to build it
+OPENCOLORIO_REPO=${OPENCOLORIO_REPO:=https://github.com/AcademySoftwareFoundation/OpenColorIO.git}
+OPENCOLORIO_VERSION=${OPENCOLORIO_VERSION:=v1.1.1}
+
+# Where to install the final results
+LOCAL_DEPS_DIR=${LOCAL_DEPS_DIR:=${PWD}/ext}
+OPENCOLORIO_SOURCE_DIR=${OPENCOLORIO_BUILD_DIR:=${LOCAL_DEPS_DIR}/OpenColorIO}
+OPENCOLORIO_BUILD_DIR=${OPENCOLORIO_BUILD_DIR:=${LOCAL_DEPS_DIR}/OpenColorIO-build}
+OPENCOLORIO_INSTALL_DIR=${OPENCOLORIO_INSTALL_DIR:=${LOCAL_DEPS_DIR}/dist}
+OPENCOLORIO_CXX_FLAGS=${OPENCOLORIO_CXX_FLAGS:="-Wno-unused-function -Wno-deprecated-declarations -Wno-cast-qual -Wno-write-strings"}
+# Just need libs:
+OPENCOLORIO_BUILDOPTS="-DOCIO_BUILD_APPS=OFF -DOCIO_BUILD_NUKE=OFF \
+                       -DOCIO_BUILD_DOCS=OFF -DOCIO_BUILD_TESTS=OFF \
+                       -DOCIO_BUILD_GPU_TESTS=OFF \
+                       -DOCIO_BUILD_PYTHON=OFF -DOCIO_BUILD_PYGLUE=OFF \
+                       -DOCIO_BUILD_JAVA=OFF \
+                       -DOCIO_BUILD_STATIC=${OCIO_BUILD_STATIC:=OFF}"
+BASEDIR=`pwd`
+pwd
+echo "OpenColorIO install dir will be: ${OPENCOLORIO_INSTALL_DIR}"
+
+mkdir -p ${LOCAL_DEPS_DIR}
+pushd ${LOCAL_DEPS_DIR}
+
+# Clone OpenColorIO project from GitHub and build
+if [[ ! -e OpenColorIO ]] ; then
+    echo "git clone ${OPENCOLORIO_REPO} OpenColorIO"
+    git clone ${OPENCOLORIO_REPO} OpenColorIO
+fi
+cd OpenColorIO
+
+echo "git checkout ${OPENCOLORIO_VERSION} --force"
+git checkout ${OPENCOLORIO_VERSION} --force
+mkdir -p build
+cd build
+time cmake --config Release -DCMAKE_INSTALL_PREFIX=${OPENCOLORIO_INSTALL_DIR} -DCMAKE_CXX_FLAGS="${OPENCOLORIO_CXX_FLAGS}" ${OPENCOLORIO_BUILDOPTS} ..
+time cmake --build . --config Release --target install
+popd
+
+# ls -R ${OPENCOLORIO_INSTALL_DIR}
+
+#echo "listing .."
+#ls ..
+
+# Set up paths. These will only affect the caller if this script is
+# run with 'source' rather than in a separate shell.
+export OpenColorIO_ROOT=$OPENCOLORIO_INSTALL_DIR
+export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${OPENCOLORIO_INSTALL_DIR}/lib
+
@@ -1,10 +1,10 @@
-#!/bin/bash
+#!/usr/bin/env bash

 # Utility script to download and build OpenEXR & IlmBase
 #
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 # Exit the whole script if any command fails.
@@ -12,14 +12,13 @@ set -ex

 # Which OpenEXR to retrieve, how to build it
 OPENEXR_REPO=${OPENEXR_REPO:=https://github.com/openexr/openexr.git}
-OPENEXR_VERSION=${OPENEXR_VERSION:=2.4.0}
-OPENEXR_BRANCH=${OPENEXR_BRANCH:=v${OPENEXR_VERSION}}
+OPENEXR_VERSION=${OPENEXR_VERSION:=v2.4.1}

 # Where to install the final results
 LOCAL_DEPS_DIR=${LOCAL_DEPS_DIR:=${PWD}/ext}
 OPENEXR_SOURCE_DIR=${OPENEXR_SOURCE_DIR:=${LOCAL_DEPS_DIR}/openexr}
 OPENEXR_BUILD_DIR=${OPENEXR_BUILD_DIR:=${LOCAL_DEPS_DIR}/openexr-build}
-OPENEXR_INSTALL_DIR=${OPENEXR_INSTALL_DIR:=${LOCAL_DEPS_DIR}/openexr-install}
+OPENEXR_INSTALL_DIR=${OPENEXR_INSTALL_DIR:=${LOCAL_DEPS_DIR}/dist}
 OPENEXR_BUILD_TYPE=${OPENEXR_BUILD_TYPE:=Release}
 CMAKE_GENERATOR=${CMAKE_GENERATOR:="Unix Makefiles"}
 OPENEXR_CMAKE_FLAGS=${OPENEXR_CMAKE_FLAGS:=""}
@@ -27,9 +26,9 @@ OPENEXR_CXX_FLAGS=${OPENEXR_CXX_FLAGS:=""}
 BASEDIR=$PWD

 pwd
-echo "Building OpenEXR ${OPENEXR_BRANCH}"
-echo "EXR build dir will be: ${OPENEXR_BUILD_DIR}"
-echo "EXR install dir will be: ${OPENEXR_INSTALL_DIR}"
+echo "Building OpenEXR ${OPENEXR_VERSION}"
+echo "OpenEXR build dir will be: ${OPENEXR_BUILD_DIR}"
+echo "OpenEXR install dir will be: ${OPENEXR_INSTALL_DIR}"
 echo "CMAKE_PREFIX_PATH is ${CMAKE_PREFIX_PATH}"
 echo "OpenEXR Build type is ${OPENEXR_BUILD_TYPE}"

@@ -47,15 +46,17 @@ mkdir -p ${OPENEXR_INSTALL_DIR} && true
 mkdir -p ${OPENEXR_BUILD_DIR} && true

 pushd ${OPENEXR_SOURCE_DIR}
-git checkout ${OPENEXR_BRANCH} --force
+git checkout ${OPENEXR_VERSION} --force

-if [[ ${OPENEXR_BRANCH} == "v2.2.0" ]] || [[ ${OPENEXR_BRANCH} == "v2.2.1" ]] ; then
+if [[ ${OPENEXR_VERSION} == "v2.2.0" ]] || [[ ${OPENEXR_VERSION} == "v2.2.1" ]] \
+        || [[ ${OPENEXR_VERSION} == "v2.2.2" ]] ; then
    mkdir -p ${OPENEXR_BUILD_DIR}/IlmBase && true
    mkdir -p ${OPENEXR_BUILD_DIR}/OpenEXR && true
    cd ${OPENEXR_BUILD_DIR}/IlmBase
    cmake --config ${OPENEXR_BUILD_TYPE} ${OPENEXR_GENERATOR_CMD} \
            -DCMAKE_INSTALL_PREFIX="${OPENEXR_INSTALL_DIR}" \
            -DCMAKE_CXX_FLAGS="${OPENEXR_CXX_FLAGS}" \
+            -DCMAKE_CXX_STANDARD=11 \
            ${OPENEXR_CMAKE_FLAGS} ${OPENEXR_SOURCE_DIR}/IlmBase
    time cmake --build . --target install --config ${OPENEXR_BUILD_TYPE}
    cd ${OPENEXR_BUILD_DIR}/OpenEXR
@@ -67,7 +68,7 @@ if [[ ${OPENEXR_BRANCH} == "v2.2.0" ]] || [[ ${OPENEXR_BRANCH} == "v2.2.1" ]] ;
            -DCMAKE_CXX_FLAGS="${OPENEXR_CXX_FLAGS}" \
            ${OPENEXR_CMAKE_FLAGS} ${OPENEXR_SOURCE_DIR}/OpenEXR
    time cmake --build . --target install --config ${OPENEXR_BUILD_TYPE}
-elif [[ ${OPENEXR_BRANCH} == "v2.3.0" ]] ; then
+elif [[ ${OPENEXR_VERSION} == "v2.3.0" ]] ; then
    # Simplified setup for 2.3+
    cd ${OPENEXR_BUILD_DIR}
    cmake --config ${OPENEXR_BUILD_TYPE} -G "$CMAKE_GENERATOR" \
@@ -1,16 +1,20 @@
 #!/bin/bash

+# Copyright Contributors to the Open Shading Language project.
+# SPDX-License-Identifier: BSD-3-Clause
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
+
 # Install OpenImageIO

 # Exit the whole script if any command fails.
 set -ex

 OPENIMAGEIO_REPO=${OPENIMAGEIO_REPO:=OpenImageIO/oiio}
-OPENIMAGEIO_BRANCH=${OPENIMAGEIO_BRANCH:=master}
+OPENIMAGEIO_VERSION=${OPENIMAGEIO_VERSION:=master}
 LOCAL_DEPS_DIR=${LOCAL_DEPS_DIR:=${PWD}/ext}
 OPENIMAGEIO_SRCDIR=${OPENIMAGEIO_SRCDIR:=${LOCAL_DEPS_DIR}/OpenImageIO}
 OPENIMAGEIO_BUILD_DIR=${OPENIMAGEIO_BUILD_DIR:=${OPENIMAGEIO_SRCDIR}/build/$PLATFORM}
-OPENIMAGEIO_INSTALLDIR=${OPENIMAGEIO_INSTALLDIR:=$OPENIMAGEIO_SRCDIR/dist/$PLATFORM}
+OPENIMAGEIO_INSTALLDIR=${OPENIMAGEIO_INSTALLDIR:=${LOCAL_DEPS_DIR}/dist}
 OPENIMAGEIO_CMAKE_FLAGS=${OPENIMAGEIO_CMAKE_FLAGS:=""}
 OPENIMAGEIO_BUILD_TYPE=${OPENIMAGEIO_BUILD_TYPE:=Release}
 OPENIMAGEIO_CXXFLAGS=${OPENIMAGEIO_CXXFLAGS:=""}
@@ -27,7 +31,7 @@ mkdir -p ${OPENIMAGEIO_BUILD_DIR} && true

 pushd $OPENIMAGEIO_SRCDIR
 git fetch --all -p
-git checkout $OPENIMAGEIO_BRANCH --force
+git checkout $OPENIMAGEIO_VERSION --force

 if [[ "$USE_SIMD" != "" ]] ; then
    OPENIMAGEIO_CMAKE_FLAGS="$OPENIMAGEIO_CMAKE_FLAGS -DUSE_SIMD=$USE_SIMD"
@@ -60,4 +64,4 @@ export PYTHONPATH=$OpenImageIO_ROOT/lib/python${PYTHON_VERSION}/site-packages:$P
 echo "DYLD_LIBRARY_PATH = $DYLD_LIBRARY_PATH"
 echo "LD_LIBRARY_PATH = $LD_LIBRARY_PATH"
 echo "OpenImageIO_ROOT $OpenImageIO_ROOT"
-ls -R $OpenImageIO_ROOT
+# ls -R $OpenImageIO_ROOT
@@ -4,22 +4,22 @@
 #
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # Exit the whole script if any command fails.
 set -ex

 # Repo and branch/tag/commit of pugixml to download if we don't have it yet
 PUGIXML_REPO=${PUGIXML_REPO:=https://github.com/zeux/pugixml.git}
-PUGIXML_VERSION=${PUGIXML_VERSION:=1.10}
-PUGIXML_BRANCH=${PUGIXML_BRANCH:=v${PUGIXML_VERSION}}
+PUGIXML_VERSION=${PUGIXML_VERSION:=v1.10}

 # Where to put pugixml repo source (default to the ext area)
 PUGIXML_SRC_DIR=${PUGIXML_SRC_DIR:=${PWD}/ext/pugixml}
 # Temp build area (default to a build/ subdir under source)
 PUGIXML_BUILD_DIR=${PUGIXML_BUILD_DIR:=${PUGIXML_SRC_DIR}/build}
 # Install area for pugixml (default to ext/dist)
-PUGIXML_INSTALL_DIR=${PUGIXML_INSTALL_DIR:=${PWD}/ext/dist}
+LOCAL_DEPS_DIR=${LOCAL_DEPS_DIR:=${PWD}/ext}
+PUGIXML_INSTALL_DIR=${PUGIXML_INSTALL_DIR:=${LOCAL_DEPS_DIR}/dist}
 #PUGIXML_BUILD_OPTS=${PUGIXML_BUILD_OPTS:=}

 pwd
@@ -34,19 +34,20 @@ if [[ ! -e ${PUGIXML_SRC_DIR} ]] ; then
    git clone ${PUGIXML_REPO} ${PUGIXML_SRC_DIR}
 fi
 cd ${PUGIXML_SRC_DIR}
-echo "git checkout ${PUGIXML_BRANCH} --force"
-git checkout ${PUGIXML_BRANCH} --force
+echo "git checkout ${PUGIXML_VERSION} --force"
+git checkout ${PUGIXML_VERSION} --force

 mkdir -p ${PUGIXML_BUILD_DIR}
 cd ${PUGIXML_BUILD_DIR}
 time cmake --config Release \
           -DCMAKE_BUILD_TYPE=Release \
           -DCMAKE_INSTALL_PREFIX=${PUGIXML_INSTALL_DIR} \
+           -DBUILD_SHARED_LIBS=ON \
           -DBUILD_TESTS=OFF \
           ${PUGIXML_BUILD_OPTS} ..
 time cmake --build . --config Release --target install

-ls -R ${PUGIXML_INSTALL_DIR}
+# ls -R ${PUGIXML_INSTALL_DIR}
 popd

 #echo "listing .."
@@ -55,4 +56,4 @@ popd
 # Set up paths. These will only affect the caller if this script is
 # run with 'source' rather than in a separate shell.
 export pugixml_ROOT=$PUGIXML_INSTALL_DIR
-
+export LD_LIBRARY_PATH=$pugixml_ROOT/lib:$pugixml_ROOT/lib64:$LD_LIBRARY_PATH
@@ -4,15 +4,14 @@
 #
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # Exit the whole script if any command fails.
 set -ex

 # Repo and branch/tag/commit of pybind11 to download if we don't have it yet
 PYBIND11_REPO=${PYBIND11_REPO:=https://github.com/pybind/pybind11.git}
-PYBIND11_VERSION=${PYBIND11_VERSION:=2.4.3}
-PYBIND11_BRANCH=${PYBIND11_BRANCH:=v${PYBIND11_VERSION}}
+PYBIND11_VERSION=${PYBIND11_VERSION:=v2.4.3}

 # Where to put pybind11 repo source (default to the ext area)
 PYBIND11_SRC_DIR=${PYBIND11_SRC_DIR:=${PWD}/ext/pybind11}
@@ -21,7 +20,7 @@ PYBIND11_BUILD_DIR=${PYBIND11_BUILD_DIR:=${PYBIND11_SRC_DIR}/build}
 # Install area for pybind11 (default to ext/dist)
 LOCAL_DEPS_DIR=${LOCAL_DEPS_DIR:=${PWD}/ext}
 PYBIND11_INSTALL_DIR=${PYBIND11_INSTALL_DIR:=${LOCAL_DEPS_DIR}/dist}
-#PYBIND11_BUILD_OPTS=${PYBIND11_BUILD_OPTS:=}
+PYBIND11_BUILD_OPTS=${PYBIND11_BUILD_OPTS:=}

 if [[ "${PYTHON_VERSION}" != "" ]] ; then
    PYBIND11_BUILD_OPTS+=" -DPYBIND11_PYTHON_VERSION=${PYTHON_VERSION}"
@@ -39,8 +38,8 @@ if [[ ! -e ${PYBIND11_SRC_DIR} ]] ; then
    git clone ${PYBIND11_REPO} ${PYBIND11_SRC_DIR}
 fi
 cd ${PYBIND11_SRC_DIR}
-echo "git checkout ${PYBIND11_BRANCH} --force"
-git checkout ${PYBIND11_BRANCH} --force
+echo "git checkout ${PYBIND11_VERSION} --force"
+git checkout ${PYBIND11_VERSION} --force

 mkdir -p ${PYBIND11_BUILD_DIR}
 cd ${PYBIND11_BUILD_DIR}
@@ -50,7 +49,7 @@ time cmake --config Release \
           ${PYBIND11_BUILD_OPTS} ..
 time cmake --build . --config Release --target install

-ls -R ${PYBIND11_INSTALL_DIR}
+# ls -R ${PYBIND11_INSTALL_DIR}
 popd

 #echo "listing .."
@@ -2,27 +2,14 @@

 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # Important: set -ex causes this whole script to terminate with error if
 # any command in it fails. This is crucial for CI tests.
 set -ex

-# This script is run when CI system first starts up.
-# It expects that ci-setenv.bash was run first, so $PLATFORM and $ARCH
-# have been set.
-
-if [[ -e src/build-scripts/ci-setenv.bash ]] ; then
-    source src/build-scripts/ci-setenv.bash
-fi
-
-mkdir -p build/$PLATFORM dist/$PLATFORM && true
-
 if [[ "$USE_SIMD" != "" ]] ; then
-    MY_CMAKE_FLAGS="$MY_CMAKE_FLAGS -DUSE_SIMD=$USE_SIMD"
-fi
-if [[ "$DEBUG" == "1" ]] ; then
-    MY_CMAKE_FLAGS="$MY_CMAKE_FLAGS -DCMAKE_BUILD_TYPE=Debug"
+    OSL_CMAKE_FLAGS="$OSL_CMAKE_FLAGS -DUSE_SIMD=$USE_SIMD"
 fi

 pushd build/$PLATFORM
@@ -30,21 +17,20 @@ cmake ../.. -G "$CMAKE_GENERATOR" \
        -DCMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE}" \
        -DCMAKE_PREFIX_PATH="$CMAKE_PREFIX_PATH" \
        -DCMAKE_INSTALL_PREFIX="$OSL_ROOT" \
-        -DUSE_PYTHON="${USE_PYTHON}" \
+        -DUSE_PYTHON="${USE_PYTHON:=1}" \
        -DPYTHON_VERSION="$PYTHON_VERSION" \
        -DCMAKE_INSTALL_LIBDIR="$OSL_ROOT/lib" \
        -DCMAKE_CXX_STANDARD="$CMAKE_CXX_STANDARD" \
-        $MY_CMAKE_FLAGS -DVERBOSE=1
+        $OSL_CMAKE_FLAGS -DVERBOSE=1
 time cmake --build . --target ${BUILDTARGET:=install} --config ${CMAKE_BUILD_TYPE}
 popd
-#make $MAKEFLAGS VERBOSE=1 $BUILD_FLAGS config
-#make $MAKEFLAGS $PAR_MAKEFLAGS $BUILD_FLAGS $BUILDTARGET

-if [[ "$SKIP_TESTS" == "" ]] ; then
-    $OSL_ROOT/bin/testshade --help
-    export OIIO_LIBRARY_PATH=$OSL_ROOT/lib:$OIIO_LIBRARY_PATH
-    TESTSUITE_CLEANUP_ON_SUCCESS=1
-    make $BUILD_FLAGS test
+if [[ "${DEBUG_CI:=0}" != "0" ]] ; then
+    echo "PATH=$PATH"
+    echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH"
+    echo "PYTHONPATH=$PYTHONPATH"
+    echo "ldd testshade"
+    ldd $OSL_ROOT/bin/testshade
 fi

 if [[ "$BUILDTARGET" == clang-format ]] ; then
@@ -55,7 +41,3 @@ if [[ "$BUILDTARGET" == clang-format ]] ; then
        exit 1
    fi
 fi
-
-#if [[ "$CODECOV" == 1 ]] ; then
-#    bash <(curl -s https://codecov.io/bash)
-#fi
@@ -2,25 +2,27 @@

 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # This script is run when CI system first starts up.
 # Since it sets many env variables needed by the caller, it should be run
 # with 'source', not in a separate shell.

 # Figure out the platform
-if [[ $TRAVIS_OS_NAME == osx || $RUNNER_OS == macOS ]] ; then
-      export ARCH=macosx
-fi
-if [[ $TRAVIS_OS_NAME == linux || $RUNNER_OS == Linux || $CIRCLECI == true ]] ; then
-      export ARCH=linux64
-fi
-if [[ $RUNNER_OS == Windows ]] ; then
-      export ARCH=windows64
+if [[ $$RUNNER_OS == macOS ]] ; then
+    export ARCH=macosx
+elif [[ $RUNNER_OS == Linux ]] ; then
+    export ARCH=linux64
+elif [[ $RUNNER_OS == Windows ]] ; then
+    export ARCH=windows64
+elif [[ `uname -m` == aarch64 ]] ; then
+    export ARCH=aarch64
+else
+    export ARCH=unknown
 fi
 export PLATFORM=$ARCH

-if [[ "$DEBUG" == 1 ]] ; then
+if [[ "${DEBUG:=0}" != "0" ]] ; then
    export PLATFORM=${PLATFORM}.debug
 fi

@@ -28,8 +30,15 @@ echo "Architecture is $ARCH"
 echo "Build platform name is $PLATFORM"

 # Environment variables we always need
-export USE_CCACHE=1
+export PATH=/usr/local/bin/_ccache:/usr/lib/ccache:$PATH
+export USE_CCACHE=${USE_CCACHE:=1}
 export CCACHE_CPP2=1
+export CCACHE_DIR=/tmp/ccache
+if [[ "${RUNNER_OS}" == "macOS" ]] ; then
+    export CCACHE_DIR=$HOME/.ccache
+fi
+mkdir -p $CCACHE_DIR
+
 export OSL_ROOT=$PWD/dist/$PLATFORM
 export DYLD_LIBRARY_PATH=$OSL_ROOT/lib:$DYLD_LIBRARY_PATH
 export LD_LIBRARY_PATH=$OSL_ROOT/lib:$LD_LIBRARY_PATH
@@ -46,33 +55,42 @@ export BUILD_MISSING_DEPS=${BUILD_MISSING_DEPS:=1}
 export COMPILER=${COMPILER:=gcc}
 export CXX=${CXX:=g++}
 export CI=true
-export USE_NINJA=1
+export USE_NINJA=${USE_NINJA:=1}
 export CMAKE_GENERATOR=${CMAKE_GENERATOR:=Ninja}
 export CMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE:=Release}
+export CMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD:=11}

-if [[ $TRAVIS == true ]] ; then
-    export PARALLEL=2
-elif [[ $CIRCLECI == true ]] ; then
-    export PARALLEL=4
-elif [[ $GITHUB_ACTIONS == true ]] ; then
-    export PARALLEL=4
-fi
 export PARALLEL=${PARALLEL:=4}
 export PAR_MAKEFLAGS=-j${PARALLEL}
-export CMAKE_BUILD_PARALLEL_LEVEL=${PARALLEL}
-export CTEST_PARALLEL_LEVEL=${PARALLEL}
+export CMAKE_BUILD_PARALLEL_LEVEL=${CMAKE_BUILD_PARALLEL_LEVEL:=${PARALLEL}}
+export CTEST_PARALLEL_LEVEL=${CTEST_PARALLEL_LEVEL:=${PARALLEL}}

 export LOCAL_DEPS_DIR=${LOCAL_DEPS_DIR:=$HOME/ext}
-export CMAKE_PREFIX_PATH=${LOCAL_DEPS_DIR}:${CMAKE_PREFIX_PATH}
+export CMAKE_PREFIX_PATH=${LOCAL_DEPS_DIR}/dist:${CMAKE_PREFIX_PATH}
+export LD_LIBRARY_PATH=${LOCAL_DEPS_DIR}/dist/lib:$LD_LIBRARY_PATH
+export LD_LIBRARY_PATH=${LOCAL_DEPS_DIR}/dist/lib64:$LD_LIBRARY_PATH
+export DYLD_LIBRARY_PATH=${LOCAL_DEPS_DIR}/dist/lib:$DYLD_LIBRARY_PATH

-uname -a
-uname -n
+export TESTSUITE_CLEANUP_ON_SUCCESS=${TESTSUITE_CLEANUP_ON_SUCCESS:=1}
+
+mkdir -p build/$PLATFORM dist/$PLATFORM
+
+echo "HOME = $HOME"
+echo "PWD = $PWD"
+echo "LOCAL_DEPS_DIR = $LOCAL_DEPS_DIR"
+echo "uname -a: " `uname -a`
+echo "uname -m: " `uname -m`
+echo "uname -s: " `uname -s`
+echo "uname -n: " `uname -n`
 pwd
 ls
 env | sort

-if [[ $ARCH == linux64 ]] ; then
+if [[ `uname -s` == "Linux" ]] ; then
    head -40 /proc/cpuinfo
 elif [[ $ARCH == macosx ]] ; then
    sysctl machdep.cpu.features
 fi
+
+# Save the env for use by other stages
+src/build-scripts/save-env.bash
@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+# Copyright Contributors to the Open Shading Language project.
+# SPDX-License-Identifier: BSD-3-Clause
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
+
+# Important: set -ex causes this whole script to terminate with error if
+# any command in it fails. This is crucial for CI tests.
+set -ex
+
+$OSL_ROOT/bin/testshade --help
+
+echo "Parallel test " ${CTEST_PARALLEL_LEVEL}
+pushd build/$PLATFORM
+time ctest -C ${CMAKE_BUILD_TYPE} -E broken --force-new-ctest-process \
+    --output-on-failure --timeout ${CTEST_TEST_TIMEOUT:=180} ${CTEST_ARGS}
+popd
+
+
+# if [[ "$CODECOV" == 1 ]] ; then
+#     bash <(curl -s https://codecov.io/bash)
+# fi
@@ -1,9 +1,9 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 from __future__ import print_function, absolute_import

 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 # ----------------------------------------------------------------------
@@ -1,60 +0,0 @@
-#!/usr/bin/env bash
-#
-
-set -ex
-
-echo "Which g++ " `which g++`
-g++ --version && true
-ls /usr/bin/g++* && true
-/usr/bin/g++ --version && true
-
-export PATH=/opt/rh/devtoolset-6/root/usr/bin:/usr/local/bin:$PATH
-#ls /opt/rh/devtoolset-6/root/usr/bin && true
-#ls /usr/local/bin
-
-ls /etc/yum.repos.d
-
-#sudo yum install -y giflib giflib-devel && true
-sudo yum install -y Field3D Field3D-devel && true
-
-#sudo rpm -v --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro && true
-#sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm && true
-#sudo yum install -y ffmpeg ffmpeg-devel && true
-
-
-
-if [[ "$LLVM_BRANCH" != ""  || "$LLVM_VERSION" != "" ]] ; then
-    source src/build-scripts/build_llvm.bash
-fi
-
-
-# Build or download LLVM
-#source src/build-scripts/build_llvm.bash
-
-source src/build-scripts/build_pybind11.bash
-
-CXXFLAGS=-fPIC src/build-scripts/build_pugixml.bash
-
-# Only build OpenEXR if a specific version is requested
-if [[ "$OPENEXR_BRANCH" != "" || "$OPENEXR_VERSION" != "" ]] ; then
-    source src/build-scripts/build_openexr.bash
-fi
-
-# Only build OpenColorIO if a specific version is requested
-if [[ "$OCIO_BRANCH" != ""  || "$OCIO_VERSION" != "" ]] ; then
-    # Temporary (?) fix: GH ninja having problems, fall back to make
-    CMAKE_GENERATOR="Unix Makefiles" \
-    source src/build-scripts/build_ocio.bash
-fi
-
-# Only build OpenImageIO if a specific version is requested
-if [[ "$OPENIMAGEIO_BRANCH" != ""  || "$OPENIMAGEIO_VERSION" != "" ]] ; then
-    # There are many parts of OIIO we don't need to build
-    export ENABLE_iinfo=0 ENABLE_iv=0 ENABLE_igrep=0 ENABLE_iconvert=0 ENABLE_testtex=0
-    export ENABLE_cineon=0 ENABLE_DDS=0 ENABLE_DPX=0 ENABLE_FITS=0
-    export ENABLE_iff=0 ENABLE_jpeg2000=0 ENABLE_PNM=0 ENABLE_PSD=0
-    export ENABLE_RLA=0 ENABLE_SGI=0 ENABLE_SOCKET=0 ENABLE_SOFTIMAGE=0
-    export ENABLE_TARGA=0 ENABLE_WEBP=0
-    export OPENIMAGEIO_MAKEFLAGS="OIIO_BUILD_TESTS=0 USE_OPENGL=0"
-    source src/build-scripts/build_openimageio.bash
-fi
@@ -2,79 +2,113 @@

 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 set -ex

-#dpkg --list

-sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-time sudo apt-get update
+#
+# Install system packages when those are acceptable for dependencies.
+#
+if [[ "$ASWF_ORG" != ""  ]] ; then
+    # Using ASWF CentOS container

-time sudo apt-get -q install -y \
-    git \
-    cmake \
-    ninja-build \
-    g++ \
-    ccache \
-    libboost-dev libboost-thread-dev \
-    libboost-filesystem-dev libboost-regex-dev \
-    libtiff-dev \
-    libilmbase-dev libopenexr-dev \
-    python-dev python-numpy \
-    libgif-dev \
-    libpng-dev \
-    flex bison libbison-dev \
-    opencolorio-tools \
-    libsquish-dev \
-    libpugixml-dev \
-    qt5-default
+    export PATH=/opt/rh/devtoolset-6/root/usr/bin:/usr/local/bin:$PATH

+    #ls /etc/yum.repos.d

+    sudo yum install -y giflib giflib-devel && true
+    sudo yum install -y opencv opencv-devel && true
+    sudo yum install -y Field3D Field3D-devel && true
+    sudo yum install -y ffmpeg ffmpeg-devel && true

-export CMAKE_PREFIX_PATH=/usr/lib/x86_64-linux-gnu:$CMAKE_PREFIX_PATH
+else
+    # Using native Ubuntu runner

-if [[ "$CXX" == "g++-4.8" ]] ; then
-    time sudo apt-get install -y g++-4.8
-elif [[ "$CXX" == "g++-6" ]] ; then
-    time sudo apt-get install -y g++-6
-elif [[ "$CXX" == "g++-7" ]] ; then
-    time sudo apt-get install -y g++-7
-elif [[ "$CXX" == "g++-8" ]] ; then
-    time sudo apt-get install -y g++-8
-elif [[ "$CXX" == "g++-9" ]] ; then
-    time sudo apt-get install -y g++-9
-elif [[ "$CXX" == "g++-10" ]] ; then
-    time sudo apt-get install -y g++-10
+    sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+    time sudo apt-get update
+
+    time sudo apt-get -q install -y \
+        git cmake ninja-build ccache g++ \
+        libboost-dev libboost-thread-dev \
+        libboost-filesystem-dev libboost-regex-dev \
+        libilmbase-dev libopenexr-dev \
+        python-dev python-numpy \
+        libtiff-dev libgif-dev libpng-dev \
+        flex bison libbison-dev \
+        libpugixml-dev \
+        libopencolorio-dev \
+        qt5-default
+
+    export CMAKE_PREFIX_PATH=/usr/lib/x86_64-linux-gnu:$CMAKE_PREFIX_PATH
+
+    if [[ "$CXX" == "g++-4.8" ]] ; then
+        time sudo apt-get install -y g++-4.8
+    elif [[ "$CXX" == "g++-6" ]] ; then
+        time sudo apt-get install -y g++-6
+    elif [[ "$CXX" == "g++-7" ]] ; then
+        time sudo apt-get install -y g++-7
+    elif [[ "$CXX" == "g++-8" ]] ; then
+        time sudo apt-get install -y g++-8
+    elif [[ "$CXX" == "g++-9" ]] ; then
+        time sudo apt-get install -y g++-9
+    elif [[ "$CXX" == "g++-10" ]] ; then
+        time sudo apt-get install -y g++-10
+    fi
+
+    source src/build-scripts/build_llvm.bash
 fi

-# time sudo apt-get install -y clang
-# time sudo apt-get install -y llvm
-#time sudo apt-get install -y libopenjpeg-dev
-#time sudo apt-get install -y libjpeg-turbo8-dev

-#dpkg --list

-# Build or download LLVM
-source src/build-scripts/build_llvm.bash
+if [[ "$OPTIX_VERSION" != "" ]] ; then
+    echo "Requested OPTIX_VERSION = '${OPTIX_VERSION}'"
+    mkdir -p $LOCAL_DEPS_DIR/dist/include/internal
+    OPTIXLOC=https://developer.download.nvidia.com/redist/optix/v${OPTIX_VERSION}
+    for f in optix.h optix_device.h optix_function_table.h \
+             optix_function_table_definition.h optix_host.h \
+             optix_stack_size.h optix_stubs.h optix_types.h optix_7_device.h \
+             optix_7_host.h optix_7_types.h \
+             internal/optix_7_device_impl.h \
+             internal/optix_7_device_impl_exception.h \
+             internal/optix_7_device_impl_transformations.h
+        do
+        curl --retry 100 -m 120 --connect-timeout 30 \
+            $OPTIXLOC/include/$f > $LOCAL_DEPS_DIR/dist/include/$f
+    done
+    export OptiX_ROOT=$LOCAL_DEPS_DIR/dist
+fi

-# Build pybind11
-CXX="ccache $CXX" source src/build-scripts/build_pybind11.bash

-CXXFLAGS=-fPIC src/build-scripts/build_pugixml.bash
+source src/build-scripts/build_pybind11.bash

-# Build OpenEXR
-CXX="ccache $CXX" source src/build-scripts/build_openexr.bash
+if [[ "$OPENEXR_VERSION" != "" ]] ; then
+    source src/build-scripts/build_openexr.bash
+fi

-# We don't need OCIO, but if we ever want it, turn this on:
-#CXX="ccache $CXX" source src/build-scripts/build_ocio.bash
+# if [[ "$PUGIXML_VERSION" != "" ]] ; then
+    source src/build-scripts/build_pugixml.bash
+    export MY_CMAKE_FLAGS+=" -DUSE_EXTERNAL_PUGIXML=1 "
+# fi

-# There are many parts of OIIO we don't need to build
-export ENABLE_iinfo=0 ENABLE_iv=0 ENABLE_igrep=0 ENABLE_iconvert=0 ENABLE_testtex=0
-export ENABLE_cineon=0 ENABLE_DDS=0 ENABLE_DPX=0 ENABLE_FITS=0
-export ENABLE_iff=0 ENABLE_jpeg2000=0 ENABLE_PNM=0 ENABLE_PSD=0
-export ENABLE_RLA=0 ENABLE_SGI=0 ENABLE_SOCKET=0 ENABLE_SOFTIMAGE=0
-export ENABLE_TARGA=0 ENABLE_WEBP=0
-export OPENIMAGEIO_MAKEFLAGS="OIIO_BUILD_TESTS=0 USE_OPENGL=0"
-source src/build-scripts/build_openimageio.bash
+if [[ "$OPENCOLORIO_VERSION" != "" ]] ; then
+    # Temporary (?) fix: GH ninja having problems, fall back to make
+    CMAKE_GENERATOR="Unix Makefiles" \
+    source src/build-scripts/build_opencolorio.bash
+fi
+
+if [[ "$OPENIMAGEIO_VERSION" != "" ]] ; then
+    # There are many parts of OIIO we don't need to build
+    export ENABLE_iinfo=0 ENABLE_iv=0 ENABLE_igrep=0
+    export ENABLE_iconvert=0 ENABLE_testtex=0
+    export ENABLE_BMP=0 ENABLE_cineon=0 ENABLE_DDS=0 ENABLE_DPX=0 ENABLE_FITS=0
+    export ENABLE_ICO=0 ENABLE_iff=0 ENABLE_jpeg2000=0 ENABLE_PNM=0 ENABLE_PSD=0
+    export ENABLE_RLA=0 ENABLE_SGI=0 ENABLE_SOCKET=0 ENABLE_SOFTIMAGE=0
+    export ENABLE_TARGA=0 ENABLE_WEBP=0
+    export OPENIMAGEIO_MAKEFLAGS="OIIO_BUILD_TESTS=0 USE_OPENGL=0"
+    source src/build-scripts/build_openimageio.bash
+fi
+
+# Save the env for use by other stages
+src/build-scripts/save-env.bash
@@ -2,14 +2,7 @@

 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
-
-if [[ ! -e build/$PLATFORM ]] ; then
-    mkdir -p build/$PLATFORM
-fi
-if [[ ! -e dist/$PLATFORM ]] ; then
-    mkdir -p dist/$PLATFORM
-fi
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # DEP_DIR="$PWD/ext/dist"
 DEP_DIR="$PWD/dist/$PLATFORM"
@@ -19,21 +12,45 @@ VCPKG_INSTALLATION_ROOT=/c/vcpkg

 export CMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH:=.}
 export CMAKE_PREFIX_PATH="$CMAKE_PREFIX_PATH;$DEP_DIR"
+export BOOST_ROOT=${BOOST_ROOT_1_72_0}
+
+BOOST_UNIX_PATH=$(echo "/$BOOST_ROOT" | sed -e 's/\\/\//g' -e 's/://')
+echo "BOOST_UNIX_PATH=$BOOST_UNIX_PATH"
+
 export CMAKE_PREFIX_PATH="$CMAKE_PREFIX_PATH;$BOOST_ROOT"
 export CMAKE_PREFIX_PATH="$CMAKE_PREFIX_PATH;$VCPKG_INSTALLATION_ROOT/installed/x64-windows"
 export PATH="$PATH:$DEP_DIR/bin:$DEP_DIR/lib:$VCPKG_INSTALLATION_ROOT/installed/x64-windows/bin:/bin"
 export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$DEP_DIR/bin:$VCPKG_INSTALLATION_ROOT/installed/x64-windows/bin"
 export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$DEP_DIR/lib:$VCPKG_INSTALLATION_ROOT/installed/x64-windows/lib"

-# export MY_CMAKE_FLAGS="$MY_CMAKE_FLAGS -DCMAKE_TOOLCHAIN_FILE=$VCPKG_INSTALLATION_ROOT/scripts/buildsystems/vcpkg.cmake"
+# export OSL_CMAKE_FLAGS="$OSL_CMAKE_FLAGS -DCMAKE_TOOLCHAIN_FILE=$VCPKG_INSTALLATION_ROOT/scripts/buildsystems/vcpkg.cmake"
 # export OPENEXR_CMAKE_FLAGS="$OPENEXR_CMAKE_FLAGS -DCMAKE_TOOLCHAIN_FILE=$VCPKG_INSTALLATION_ROOT/scripts/buildsystems/vcpkg.cmake"

-ls -l "C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC"
+#ls -l "C:/Program Files (x86)/Microsoft Visual Studio/*/Enterprise/VC/Tools/MSVC" && true
+#ls -l "C:/Program Files (x86)/Microsoft Visual Studio" && true

+
+if [[ "$PYTHON_VERSION" == "3.6" ]] ; then
+    export CMAKE_PREFIX_PATH="$CMAKE_PREFIX_PATH;/c/hostedtoolcache/windows/Python/3.6.8/x64"
+else
+    export CMAKE_PREFIX_PATH="$CMAKE_PREFIX_PATH;/c/hostedtoolcache/windows/Python/3.7.9/x64"
+    export Python_EXECUTABLE="/c/hostedtoolcache/windows/Python/3.7.9/x64/python.exe"
+    export PYTHONPATH=$OpenImageIO_ROOT/lib/python${PYTHON_VERSION}/site-packages
+fi
+pip install numpy
+
+
+########################################################################
+# Dependency method #1: Use vcpkg (disabled)
+#
+# Currently we are not using this, but here it is for reference:
+#
+echo "All pre-installed VCPkg installs:"
 vcpkg list
-vcpkg update
-
-# vcpkg install zlib:x64-windows
+echo "---------------"
+# vcpkg update
+# 
+# # vcpkg install zlib:x64-windows
 vcpkg install tiff:x64-windows
 vcpkg install libpng:x64-windows
 #vcpkg install giflib:x64-windows
@@ -46,48 +63,56 @@ vcpkg install libpng:x64-windows
 # vcpkg install ffmpeg:x64-windows   # takes FOREVER!
 # vcpkg install webp:x64-windows  # No such vcpkg package?a

-echo "$VCPKG_INSTALLATION_ROOT"
-ls "$VCPKG_INSTALLATION_ROOT"
-echo "$VCPKG_INSTALLATION_ROOT/installed/x64-windows"
-ls "$VCPKG_INSTALLATION_ROOT/installed/x64-windows"
-echo "$VCPKG_INSTALLATION_ROOT/installed/x64-windows/lib"
-ls "$VCPKG_INSTALLATION_ROOT/installed/x64-windows/lib"
-echo "$VCPKG_INSTALLATION_ROOT/installed/x64-windows/bin"
-ls "$VCPKG_INSTALLATION_ROOT/installed/x64-windows/bin"
+# echo "$VCPKG_INSTALLATION_ROOT"
+# ls "$VCPKG_INSTALLATION_ROOT"
+# echo "$VCPKG_INSTALLATION_ROOT/installed/x64-windows"
+# ls "$VCPKG_INSTALLATION_ROOT/installed/x64-windows"
+# echo "$VCPKG_INSTALLATION_ROOT/installed/x64-windows/lib"
+# ls "$VCPKG_INSTALLATION_ROOT/installed/x64-windows/lib"
+# echo "$VCPKG_INSTALLATION_ROOT/installed/x64-windows/bin"
+# ls "$VCPKG_INSTALLATION_ROOT/installed/x64-windows/bin"

 echo "All VCPkg installs:"
 vcpkg list
+#
+########################################################################

-# curl --location https://ffmpeg.zeranoe.com/builds/win64/shared/ffmpeg-4.2.1-win64-shared.zip -o ffmpeg-libs.zip
-# unzip ffmpeg-libs.zip
-curl --location https://ffmpeg.zeranoe.com/builds/win64/dev/ffmpeg-4.2.1-win64-dev.zip -o ffmpeg-dev.zip
-unzip ffmpeg-dev.zip
-ls
-ls -R *ffmpeg*
-FFmpeg_ROOT=$PWD/ffmpeg-4.2.1-win64-dev
+
+########################################################################
+# Dependency method #2: Build from source ourselves
+#
+#
+
+src/build-scripts/build_zlib.bash
+export ZLIB_ROOT=$PWD/ext/dist
+
+src/build-scripts/build_libpng.bash
+export PNG_ROOT=$PWD/ext/dist
+
+# We're currently getting libtiff from vcpkg
+#src/build-scripts/build_libtiff.bash
+#export TIFF_ROOT=$PWD/ext/dist
+
+# We're currently getting jpeg from vcpkg
+# LIBJPEGTURBO_CONFIG_OPTS=-DWITH_SIMD=OFF
+# # ^^ because we're too lazy to build nasm
+# src/build-scripts/build_libjpeg-turbo.bash
+# export JPEGTurbo_ROOT=$PWD/ext/dist
+
+source src/build-scripts/build_pybind11.bash
+#export pybind11_ROOT=$PWD/ext/dist
+
+
+# curl --location https://ffmpeg.zeranoe.com/builds/win64/dev/ffmpeg-4.2.1-win64-dev.zip -o ffmpeg-dev.zip
+# unzip ffmpeg-dev.zip
+# FFmpeg_ROOT=$PWD/ffmpeg-4.2.1-win64-dev

 echo "CMAKE_PREFIX_PATH = $CMAKE_PREFIX_PATH"

-mkdir ext
-
-# ZLib
-pushd ext
-git clone -b v1.2.11 https://github.com/madler/zlib.git
-cd zlib
-mkdir -p $INT_DIR
-cd $INT_DIR
-cmake ../.. -G "$CMAKE_GENERATOR" -DCMAKE_CONFIGURATION_TYPES="$CMAKE_BUILD_TYPE" -DCMAKE_PREFIX_PATH="$DEP_DIR" -DCMAKE_INSTALL_PREFIX="$DEP_DIR"
-cmake --build . --config $CMAKE_BUILD_TYPE --target install
-popd
-export MY_CMAKE_FLAGS="$MY_CMAKE_FLAGS -DZLIB_LIBRARY=$DEP_DIR/lib/zlib.lib"
-export OPENEXR_CMAKE_FLAGS="$OPENEXR_CMAKE_FLAGS -DZLIB_LIBRARY=$DEP_DIR/lib/zlib.lib"
-
-source src/build-scripts/build_pybind11.bash

 OPENEXR_CXX_FLAGS=" /W1 /EHsc /DWIN32=1 "
 #OPENEXR_BUILD_TYPE=$CMAKE_BUILD_TYPE
 OPENEXR_INSTALL_DIR=$DEP_DIR
-OPENEXR_BRANCH=v2.4.0
 source src/build-scripts/build_openexr.bash
 export PATH="$OPENEXR_INSTALL_DIR/bin:$OPENEXR_INSTALL_DIR/lib:$PATH"
 export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PATH
@@ -97,7 +122,6 @@ cp $DEP_DIR/lib/*.lib $DEP_DIR/bin
 cp $DEP_DIR/bin/*.dll $DEP_DIR/lib


-#OPENIMAGEIO_REPO=lgritz/oiio
 #OPENIMAGEIO_BRANCH=lg-cmake312
 OPENIMAGEIO_INSTALLDIR=$DEP_DIR
 OPENIMAGEIO_CMAKE_FLAGS+=" -DOIIO_BUILD_TESTS=0 -DOIIO_BUILD_TOOLS=0"
@@ -123,12 +147,11 @@ export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$VCPKG_INSTALLATION_ROOT/installed/x64-

 # source src/build-scripts/build_openexr.bash
 # export CMAKE_PREFIX_PATH="$CMAKE_PREFIX_PATH;$ILMBASE_ROOT;$OPENEXR_ROOT"
-# source src/build-scripts/build_ocio.bash
+# source src/build-scripts/build_opencolorio.bash


-if [[ "$PYTHON_VERSION" == "3.6" ]] ; then
-    export CMAKE_PREFIX_PATH="$CMAKE_PREFIX_PATH;/c/hostedtoolcache/windows/Python/3.6.8/x64"
-fi
-
 # For CI on Windows, prefer to pick up static libs where possible
-MY_CMAKE_FLAGS="$MY_CMAKE_FLAGS -DLINKSTATIC=1 -DBUILD_SHARED_LIBS=0"
+OSL_CMAKE_FLAGS="$OSL_CMAKE_FLAGS -DLINKSTATIC=1 -DBUILD_SHARED_LIBS=0"
+
+# Save the env for use by other stages
+src/build-scripts/save-env.bash
@@ -1,12 +1,12 @@
-#!/bin/bash
+#!/usr/bin/env bash

 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # This script, which assumes it is runnign on a Mac OSX with Homebrew
 # installed, does a "brew install" in all packages reasonably needed by
-# OIIO.
+# OSL and its dependencies.

 if [[ `uname` != "Darwin" ]] ; then
    echo "Don't run this script unless you are on Mac OSX"
@@ -20,25 +20,26 @@ if [[ `which brew` == "" ]] ; then
 fi


-brew update >/dev/null
+#brew update >/dev/null
 echo ""
 echo "Before my brew installs:"
 brew list --versions

-if [[ $PYTHON_VERSION != "2.7" ]] ; then
-    brew uninstall python@2 && true
-fi
-brew install --display-times gcc ccache cmake ninja boost && true
+brew install --display-times -q gcc ccache cmake ninja boost || true
 brew link --overwrite gcc
-brew install --display-times python pybind11 && true
-brew upgrade --display-times python && true
-brew link --overwrite python
-brew install --display-times flex bison
-brew install --display-times libtiff ilmbase openexr
-brew install --display-times opencolorio partio pugixml
-brew install --display-times freetype libpng && true
-brew install --display-times llvm${LLVMBREWVER}
-brew install --display-times qt
+brew unlink python@2.7 || true
+brew unlink python@3.9 || true
+brew unlink python@3.8 || true
+brew link --overwrite --force python@${PYTHON_VERSION} || true
+brew upgrade --display-times -q cmake || true
+brew install --display-times -q libtiff ilmbase openexr
+brew install --display-times -q libpng giflib webp jpeg-turbo freetype
+brew install --display-times -q opencolorio partio pugixml
+brew install --display-times -q pybind11 numpy || true
+brew install --display-times -q tbb || true
+brew install --display-times -q flex bison
+brew install --display-times -q llvm${LLVMBREWVER}
+brew install --display-times -q qt

 echo ""
 echo "After brew installs:"
@@ -56,4 +57,10 @@ fi
 export PATH=/usr/local/opt/qt5/bin:$PATH
 export PATH=/usr/local/opt/python/libexec/bin:$PATH
 export PYTHONPATH=/usr/local/lib/python${PYTHON_VERSION}/site-packages:$PYTHONPATH
-export PATH=/usr/local/opt/llvm/bin:$PATH
+export PATH=/usr/local/opt/llvm${LLVMBREWVER}/bin:$PATH
+export LLVM_DIRECTORY=/usr/local/opt/llvm${LLVMBREWVER}
+export LLVM_ROOT=/usr/local/opt/llvm${LLVMBREWVER}
+export PATH=/usr/local/opt/flex/bin:/usr/local/opt/bison/bin:$PATH
+
+# Save the env for use by other stages
+src/build-scripts/save-env.bash
@@ -5,7 +5,7 @@ includedir=${prefix}/include

 Name: oslcomp
 Description: oslcomp Compile OSL shaders from source
-URL: https://github.com/imageworks/OpenShadingLanguage
+URL: https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
 Version: @PROJECT_VERSION_MAJOR@.@PROJECT_VERSION_MINOR@.@PROJECT_VERSION_PATCH@
 Libs: -L${libdir} -loslcomp
 Cflags: -I${includedir}
@@ -5,7 +5,7 @@ includedir=${prefix}/include

 Name: oslexec
 Description: oslexec Execute compiled OSL shaders
-URL: https://github.com/imageworks/OpenShadingLanguage
+URL: https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
 Version: @PROJECT_VERSION_MAJOR@.@PROJECT_VERSION_MINOR@.@PROJECT_VERSION_PATCH@
 Libs: -L${libdir} -loslexec
 Cflags: -I${includedir}
@@ -5,7 +5,7 @@ includedir=${prefix}/include

 Name: oslquery
 Description: oslquery Query parameters of OSL compiled shaders
-URL: https://github.com/imageworks/OpenShadingLanguage
+URL: https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
 Version: @PROJECT_VERSION_MAJOR@.@PROJECT_VERSION_MINOR@.@PROJECT_VERSION_PATCH@
 Libs: -L${libdir} -loslquery
 Cflags: -I${includedir}
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+# Save the env for use by other stages. Exclude things that we know aren't
+# needed.
+printenv \
+    | sort \
+    | grep -v ASWF_ \
+    | grep -v GITHUB_ \
+    | grep -v NVIDIA_ \
+    | grep -v RUNNER_ \
+    | grep -v _= \
+    | fgrep -v "\*" \
+    >> $GITHUB_ENV
+
+
+echo "save-env: GITHUB_ENV=${GITHUB_ENV}"
+cat $GITHUB_ENV
+echo "---------"
+
@@ -1,15 +1,19 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

@PACKAGE_INIT@

 include(CMakeFindDependencyMacro)

-# add here all the find_dependency() whenever switching to config based
-# dependencies e.g. if switching to Boost::Boost instead of using
-# ${Boost_LIBRARY_DIRS} the add:
-# find_dependency(Boost @Boost_VERSION@)
+# add here all the find_dependency() whenever switching to config based dependencies
+if (@OpenEXR_VERSION@ VERSION_GREATER_EQUAL 2.5)
+    find_dependency(OpenEXR @OpenEXR_VERSION@)
+    # N.B. Only do this for OpenEXR >= 2.5, difficult to rely on their
+    # exported configs before that.
+endif ()
+
+find_dependency(OpenImageIO @OpenImageIO_VERSION@ REQUIRED)

 set_and_check (@PROJECT_NAME@_INCLUDE_DIR "@CMAKE_INSTALL_FULL_INCLUDEDIR@")
 set_and_check (@PROJECT_NAME@_INCLUDES    "@CMAKE_INSTALL_FULL_INCLUDEDIR@")
@@ -5,7 +5,7 @@
 # Is the named package "enabled" via our disabling convention? If either
 # USE_pkgname (or the all-uppercase USE_PKGNAME, or ENABLE_pkgname, or
 # ENABLE_PKGNAME) exists as either a CMake or environment variable, is
-# nonempty by contains a non-true/nonnzero value, store false in the
+# nonempty by contains a non-true/nonzero value, store false in the
 # variable named by <enablevar>, otherwise store true.
 function (check_is_enabled pkgname enablevar)
    string (TOUPPER ${pkgname} pkgname_upper)
@@ -0,0 +1,157 @@
+# Copyright Contributors to the Open Shading Language project.
+# SPDX-License-Identifier: BSD-3-Clause
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
+
+
+set (REQUIED_DEPS "" CACHE STRING
+     "Additional dependencies to consider required (semicolon-separated list, or ALL)")
+set (OPTIONAL_DEPS "" CACHE STRING
+     "Additional dependencies to consider optional (semicolon-separated list, or ALL)")
+
+
+# checked_find_package(Pkgname ...) is a wrapper for find_package, with the
+# following extra features:
+#   * If either `USE_Pkgname` or the all-uppercase `USE_PKGNAME` (or
+#     `ENABLE_Pkgname` or `ENABLE_PKGNAME`) exists as either a CMake or
+#     environment variable, is nonempty by contains a non-true/nonzero
+#     value, do not search for or use the package. The optional ENABLE <var>
+#     arguments allow you to override the name of the enabling variable. In
+#     other words, support for the dependency is presumed to be ON, unless
+#     turned off explicitly from one of these sources.
+#   * Print a message if the package is enabled but not found. This is based
+#     on ${Pkgname}_FOUND or $PKGNAME_FOUND.
+#   * Optional DEFINITIONS <string> are passed to add_definitions if the
+#     package is found.
+#   * Optional PRINT <list> is a list of variables that will be printed
+#     if the package is found, if VERBOSE is on.
+#   * Optional DEPS <list> is a list of hard dependencies; for each one, if
+#     dep_FOUND is not true, disable this package with an error message.
+#   * Optional ISDEPOF <downstream> names another package for which the
+#     present package is only needed because it's a dependency, and
+#     therefore if <downstream> is disabled, we don't bother with this
+#     package either.
+#   * Optional VERSION_MIN and VERSION_MAX, if supplied, give minimum and
+#     maximum versions that will be accepted. The min is inclusive, the max
+#     is exclusive (i.e., check for min <= version < max). Note that this is
+#     not the same as providing a version number to find_package, which
+#     checks compatibility, not minimum. Sometimes we really do just want to
+#     say a minimum or a range. (N.B. When our minimum CMake >= 3.19, the
+#     built-in way to do this is with version ranges passed to
+#     find_package.)
+#   * Optional RECOMMEND_MIN, if supplied, gives a minimum recommended
+#     version, accepting but warning if it is below this number (even
+#     if above the true minimum version accepted). The warning message
+#     can give an optional explanation, passed as RECOMMEND_MIN_REASON.
+#
+# N.B. This needs to be a macro, not a function, because the find modules
+# will set(blah val PARENT_SCOPE) and we need that to be the global scope,
+# not merely the scope for this function.
+macro (checked_find_package pkgname)
+    cmake_parse_arguments(_pkg   # prefix
+        # noValueKeywords:
+        "REQUIRED"
+        # singleValueKeywords:
+        "ENABLE;ISDEPOF;VERSION_MIN;VERSION_MAX;RECOMMEND_MIN;RECOMMEND_MIN_REASON"
+        # multiValueKeywords:
+        "DEFINITIONS;PRINT;DEPS"
+        # argsToParse:
+        ${ARGN})
+    string (TOLOWER ${pkgname} pkgname_lower)
+    string (TOUPPER ${pkgname} pkgname_upper)
+    if (NOT VERBOSE)
+        set (${pkgname}_FIND_QUIETLY true)
+        set (${pkgname_upper}_FIND_QUIETLY true)
+    endif ()
+    if ("${pkgname}" IN_LIST REQUIRED_DEPS OR "ALL" IN_LIST REQUIRED_DEPS)
+        set (_pkg_REQUIRED 1)
+    endif ()
+    if ("${pkgname}" IN_LIST OPTIONAL_DEPS OR "ALL" IN_LIST OPTIONAL_DEPS)
+        set (_pkg_REQUIRED 0)
+    endif ()
+    set (_quietskip false)
+    check_is_enabled (${pkgname} _enable)
+    set (_disablereason "")
+    foreach (_dep ${_pkg_DEPS})
+        if (_enable AND NOT ${_dep}_FOUND)
+            set (_enable false)
+            set (ENABLE_${pkgname} OFF PARENT_SCOPE)
+            set (_disablereason "(because ${_dep} was not found)")
+        endif ()
+    endforeach ()
+    if (_pkg_ISDEPOF)
+        check_is_enabled (${_pkg_ISDEPOF} _dep_enabled)
+        if (NOT _dep_enabled)
+            set (_enable false)
+            set (_quietskip true)
+        endif ()
+    endif ()
+    if (_enable OR _pkg_REQUIRED)
+        find_package (${pkgname} ${_pkg_UNPARSED_ARGUMENTS})
+        if ((${pkgname}_FOUND OR ${pkgname_upper}_FOUND)
+              AND ${pkgname}_VERSION
+              AND (_pkg_VERSION_MIN OR _pkg_VERSION_MAX))
+            if ((_pkg_VERSION_MIN AND ${pkgname}_VERSION VERSION_LESS _pkg_VERSION_MIN)
+                  OR (_pkg_VERSION_MAX AND ${pkgname}_VERSION VERSION_GREATER _pkg_VERSION_MAX))
+                message (STATUS "${ColorRed}${pkgname} ${${pkgname}_VERSION} is outside the required range ${_pkg_VERSION_MIN}...${_pkg_VERSION_MAX} ${ColorReset}")
+                unset (${pkgname}_FOUND)
+                unset (${pkgname}_VERSION)
+                unset (${pkgname_upper}_FOUND)
+                unset (${pkgname_upper}_VERSION)
+            endif ()
+        endif ()
+        if (${pkgname}_FOUND OR ${pkgname_upper}_FOUND)
+            foreach (_vervar ${pkgname_upper}_VERSION ${pkgname}_VERSION_STRING
+                             ${pkgname_upper}_VERSION_STRING)
+                if (NOT ${pkgname}_VERSION AND ${_vervar})
+                    set (${pkgname}_VERSION ${${_vervar}})
+                endif ()
+            endforeach ()
+            message (STATUS "${ColorGreen}Found ${pkgname} ${${pkgname}_VERSION} ${ColorReset}")
+            if (VERBOSE)
+                set (_vars_to_print ${pkgname}_INCLUDES ${pkgname_upper}_INCLUDES
+                                    ${pkgname}_INCLUDE_DIR ${pkgname_upper}_INCLUDE_DIR
+                                    ${pkgname}_INCLUDE_DIRS ${pkgname_upper}_INCLUDE_DIRS
+                                    ${pkgname}_LIBRARIES ${pkgname_upper}_LIBRARIES
+                                    ${_pkg_PRINT})
+                list (REMOVE_DUPLICATES _vars_to_print)
+                foreach (_v IN LISTS _vars_to_print)
+                    if (NOT "${${_v}}" STREQUAL "")
+                        message (STATUS "    ${_v} = ${${_v}}")
+                    endif ()
+                endforeach ()
+            endif ()
+            add_definitions (${_pkg_DEFINITIONS})
+            if (_pkg_RECOMMEND_MIN)
+                if (${${pkgname}_VERSION} VERSION_LESS ${_pkg_RECOMMEND_MIN})
+                    message (STATUS "${ColorYellow}Recommend ${pkgname} >= ${_pkg_RECOMMEND_MIN} ${_pkg_RECOMMEND_MIN_REASON} ${ColorReset}")
+                endif ()
+            endif ()
+        else ()
+            message (STATUS "${ColorRed}${pkgname} library not found ${ColorReset}")
+            if (${pkgname}_ROOT)
+                message (STATUS "${ColorRed}    ${pkgname}_ROOT was: ${${pkgname}_ROOT} ${ColorReset}")
+            elseif ($ENV{${pkgname}_ROOT})
+                message (STATUS "${ColorRed}    ENV ${pkgname}_ROOT was: ${${pkgname}_ROOT} ${ColorReset}")
+            else ()
+                message (STATUS "${ColorRed}    Try setting ${pkgname}_ROOT ? ${ColorReset}")
+            endif ()
+            if (EXISTS "${PROJECT_SOURCE_DIR}/src/build-scripts/build_${pkgname}.bash")
+                message (STATUS "${ColorRed}    Maybe this will help:  src/build-scripts/build_${pkgname}.bash ${ColorReset}")
+            elseif (EXISTS "${PROJECT_SOURCE_DIR}/src/build-scripts/build_${pkgname_upper}.bash")
+                message (STATUS "${ColorRed}    Maybe this will help:  src/build-scripts/build_${pkgname_upper}.bash ${ColorReset}")
+            elseif (EXISTS "${PROJECT_SOURCE_DIR}/src/build-scripts/build_${pkgname_lower}.bash")
+                    message (STATUS "${ColorRed}    Maybe this will help:  src/build-scripts/build_${pkgname_lower}.bash ${ColorReset}")
+            elseif (EXISTS "${PROJECT_SOURCE_DIR}/src/build-scripts/build_lib${pkgname_lower}.bash")
+                    message (STATUS "${ColorRed}    Maybe this will help:  src/build-scripts/build_lib${pkgname_lower}.bash ${ColorReset}")
+            endif ()
+            if (_pkg_REQUIRED)
+                message (FATAL_ERROR "${ColorRed}${pkgname} is required, aborting.${ColorReset}")
+            endif ()
+        endif()
+    else ()
+        if (NOT _quietskip)
+            message (STATUS "${ColorRed}Not using ${pkgname} -- disabled ${_disablereason} ${ColorReset}")
+        endif ()
+    endif ()
+endmacro()
+
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 ###########################################################################
 #
@@ -80,7 +80,7 @@ endif ()
 ###########################################################################
 # Turn on more detailed warnings and optionally consider warnings as errors
 #
-option (STOP_ON_WARNING "Stop building if there are any compiler warnings" ON)
+option (STOP_ON_WARNING "Stop building if there are any compiler warnings" OFF)
 option (EXTRA_WARNINGS "Enable lots of extra pedantic warnings" OFF)
 if (NOT MSVC)
    add_compile_options ("-Wall")
@@ -89,9 +89,8 @@ if (NOT MSVC)
    endif ()
    if (STOP_ON_WARNING OR DEFINED ENV{CI})
        add_compile_options ("-Werror")
-        # N.B. Force CI builds (Travis defines $CI) to use -Werror, even if
-        # STOP_ON_WARNING has been switched off by default, which we may do
-        # in release branches.
+        # N.B. Force CI builds to use -Werror, even if STOP_ON_WARNING has
+        # been switched off by default, which we may do in release branches.
    endif ()
 endif ()

@@ -116,7 +115,7 @@ if (${CXX_VISIBILITY_PRESET} STREQUAL "hidden" AND
    (CMAKE_SYSTEM_NAME MATCHES "Linux|kFreeBSD" OR CMAKE_SYSTEM_NAME STREQUAL "GNU"))
    # Linux/FreeBSD/Hurd: also hide all the symbols of dependent libraries
    # to prevent clashes if an app using this project is linked against
-    # other verions of our dependencies.
+    # other versions of our dependencies.
    set (VISIBILITY_MAP_COMMAND "-Wl,--version-script=${VISIBILITY_MAP_FILE}")
 endif ()

@@ -202,9 +201,9 @@ endif ()
 # Use ccache if found
 #
 # This can really speed up compilation by caching object files that have
-# been compiled previously with idential arguments and inputs. Putting this
+# been compiled previously with identical arguments and inputs. Putting this
 # logic here makes it work even if the user is unaware of ccache. If it's
-# not found on the system, it will simply be silnetly not used.
+# not found on the system, it will simply be silently not used.
 option (USE_CCACHE "Use ccache if found" ON)
 find_program (CCACHE_FOUND ccache)
 if (CCACHE_FOUND AND USE_CCACHE)
@@ -249,8 +248,8 @@ endif ()
 ###########################################################################
 # SIMD and machine architecture options.
 #
-# The USE_SIMD optinon may be set to a comma-separated list of machine /
-# instruction set optinos, such as "avx3,f16c". The list will be parsed and
+# The USE_SIMD option may be set to a comma-separated list of machine /
+# instruction set options, such as "avx3,f16c". The list will be parsed and
 # the proper compiler directives added to generate code for those ISA
 # capabilities.
 #
@@ -426,6 +425,7 @@ set (CLANG_FORMAT_INCLUDES # "src/*.h" "src/*.cpp"
                            "src/osl.imageio/*.cpp"
                            "src/osltoy/*.cpp"
                            "src/osltoy/*.h"
+                            "testsuite/*.cpp"
    CACHE STRING "Glob patterns to include for clang-format")
 set (CLANG_FORMAT_EXCLUDES
        # Files "imported and modified" that we don't want to reformat, so
@@ -445,6 +445,8 @@ set (CLANG_FORMAT_EXCLUDES
        "src/include/OSL/device_string.h"
        "src/include/OSL/oslexec.h"
        "src/testrender/cuda/*"
+        # Header files in testsuite are almost certainly osl headers, not C++
+        "testsuite/*.h"
        ""
     CACHE STRING "Glob patterns to exclude for clang-format")
 find_program (CLANG_FORMAT_EXE
@@ -532,7 +534,7 @@ endif ()
 ###########################################################################
 # Any extra logic to be run only for CI builds goes here.
 #
-if (DEFINED ENV{TRAVIS} OR DEFINED ENV{APPVEYOR} OR DEFINED ENV{CI} OR DEFINED ENV{GITHUB_ACTIONS})
+if (DEFINED ENV{CI} OR DEFINED ENV{GITHUB_ACTIONS})
    add_definitions ("-D${PROJ_NAME}_CI=1" "-DBUILD_CI=1")
    if (APPLE)
        # Keep Mono framework from being incorrectly searched for include
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # Compile a CUDA file to PTX using NVCC
 function ( NVCC_COMPILE cuda_src ptx_generated extra_nvcc_args )
@@ -20,7 +20,7 @@ function ( NVCC_COMPILE cuda_src ptx_generated extra_nvcc_args )
            "-I${PROJECT_SOURCE_DIR}/src/include"
            "-I${PROJECT_SOURCE_DIR}/src/cuda_common"
            "-I${OPENIMAGEIO_INCLUDES}"
-            "-I${ILMBASE_INCLUDES}"
+            "-I${IMATH_INCLUDES}"
            "-I${Boost_INCLUDE_DIRS}"
            "-DFMT_DEPRECATED=\"\""
            ${LLVM_COMPILE_FLAGS}
@@ -80,7 +80,7 @@ function ( MAKE_CUDA_BITCODE src suffix generated_bc extra_clang_args )
            "-I${ILMBASE_INCLUDE_DIR}"
            "-I${Boost_INCLUDE_DIRS}"
            ${LLVM_COMPILE_FLAGS} ${CUDA_LIB_FLAGS}
-            -D__CUDACC__ -DOSL_COMPILING_TO_BITCODE=1 -DNDEBUG -DOIIO_NO_SSE
+            -D__CUDACC__ -DOSL_COMPILING_TO_BITCODE=1 -DNDEBUG -DOIIO_NO_SSE -D__CUDADEVRT_INTERNAL__
            --language=cuda --cuda-device-only --cuda-gpu-arch=${CUDA_TARGET_ARCH}
            -Wno-deprecated-register -Wno-format-security
            -O3 -fno-math-errno -ffast-math -S -emit-llvm ${extra_clang_args}
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 ###########################################################################
 # Find external dependencies
@@ -8,23 +8,8 @@

 # When not in VERBOSE mode, try to make things as quiet as possible
 if (NOT VERBOSE)
-    set (Bison_FIND_QUIETLY true)
-    set (Boost_FIND_QUIETLY true)
-    set (Curses_FIND_QUIETLY true)
-    set (Flex_FIND_QUIETLY true)
-    # set (LLVM_FIND_QUIETLY true)
-    set (OpenEXR_FIND_QUIETLY true)
-    # set (OpenImageIO_FIND_QUIETLY true)
-    # set (Partio_FIND_QUIETLY true)
    set (PkgConfig_FIND_QUIETLY true)
-    set (PugiXML_FIND_QUIETLY TRUE)
-    set (PythonInterp_FIND_QUIETLY true)
-    set (PythonLibs_FIND_QUIETLY true)
-    set (Qt5_FIND_QUIETLY true)
    set (Threads_FIND_QUIETLY true)
-    set (ZLIB_FIND_QUIETLY true)
-    set (CUDA_FIND_QUIETLY true)
-    set (OptiX_FIND_QUIETLY true)
 endif ()

 message (STATUS "${ColorBoldWhite}")
@@ -43,117 +28,6 @@ set (OSL_LOCAL_DEPS_DIR "${CMAKE_SOURCE_DIR}/ext/dist" CACHE STRING
 list (INSERT CMAKE_PREFIX_PATH 0 ${OSL_LOCAL_DEPS_DIR})
 message (STATUS "CMAKE_PREFIX_PATH = ${CMAKE_PREFIX_PATH}")

-set (REQUIED_DEPS "" CACHE STRING
-     "Additional dependencies to consider required (semicolon-separated list, or ALL)")
-set (OPTIONAL_DEPS "" CACHE STRING
-     "Additional dependencies to consider optional (semicolon-separated list, or ALL)")
-
-
-# checked_find_package(pkgname ..) is a wrapper for find_package, with the
-# following extra features:
-#   * If either `USE_pkgname` or the all-uppercase `USE_PKGNAME` (or
-#     `ENABLE_pkgname` or `ENABLE_PKGNAME`) exists as either a CMake or
-#     environment variable, is nonempty by contains a non-true/nonnzero
-#     value, do not search for or use the package. The optional ENABLE <var>
-#     arguments allow you to override the name of the enabling variable. In
-#     other words, support for the dependency is presumed to be ON, unless
-#     turned off explicitly from one of these sources.
-#   * Print a message if the package is enabled but not found. This is based
-#     on ${pkgname}_FOUND or $PKGNNAME_FOUND.
-#   * Optional DEFINITIONS <string> are passed to add_definitions if the
-#     package is found.
-#   * Optional PRINT <list> is a list of variables that will be printed
-#     if the package is found, if VERBOSE is on.
-#   * Optional DEPS <list> is a list of hard dependencies; for each one, if
-#     dep_FOUND is not true, disable this package with an error message.
-#   * Optional ISDEPOF <downstream> names another package for which the
-#     present package is only needed because it's a dependency, and
-#     therefore if <downstream> is disabled, we don't bother with this
-#     package either.
-#
-# N.B. This needs to be a macro, not a function, because the find modules
-# will set(blah val PARENT_SCOPE) and we need that to be the global scope,
-# not merely the scope for this function.
-macro (checked_find_package pkgname)
-    cmake_parse_arguments(_pkg "REQUIRED" "ENABLE;ISDEPOF" "DEFINITIONS;PRINT;DEPS" ${ARGN})
-        # Arguments: <prefix> noValueKeywords singleValueKeywords multiValueKeywords argsToParse
-    string (TOUPPER ${pkgname} pkgname_upper)
-    if (NOT VERBOSE)
-        set (${pkgname}_FIND_QUIETLY true)
-        set (${pkgname_upper}_FIND_QUIETLY true)
-    endif ()
-    if ("${pkgname}" IN_LIST REQUIRED_DEPS OR "ALL" IN_LIST REQUIRED_DEPS)
-        set (_pkg_REQUIRED 1)
-    endif ()
-    if ("${pkgname}" IN_LIST OPTIONAL_DEPS OR "ALL" IN_LIST OPTIONAL_DEPS)
-        set (_pkg_REQUIRED 0)
-    endif ()
-    set (_quietskip false)
-    check_is_enabled (${pkgname} _enable)
-    set (_disablereason "")
-    foreach (_dep ${_pkg_DEPS})
-        if (_enable AND NOT ${_dep}_FOUND)
-            set (_enable false)
-            set (ENABLE_${pkgname} OFF PARENT_SCOPE)
-            set (_disablereason "(because ${_dep} was not found)")
-        endif ()
-    endforeach ()
-    if (_pkg_ISDEPOF)
-        check_is_enabled (${_pkg_ISDEPOF} _dep_enabled)
-        if (NOT _dep_enabled)
-            set (_enable false)
-            set (_quietskip true)
-        endif ()
-    endif ()
-    if (_enable OR _pkg_REQUIRED)
-        find_package (${pkgname} ${_pkg_UNPARSED_ARGUMENTS})
-        if (${pkgname}_FOUND OR ${pkgname_upper}_FOUND)
-            foreach (_vervar ${pkgname_upper}_VERSION ${pkgname}_VERSION_STRING
-                             ${pkgname_upper}_VERSION_STRING)
-                if (NOT ${pkgname}_VERSION AND ${_vervar})
-                    set (${pkgname}_VERSION ${${_vervar}})
-                endif ()
-            endforeach ()
-            message (STATUS "${ColorGreen}Found ${pkgname} ${${pkgname}_VERSION} ${ColorReset}")
-            if (VERBOSE)
-                set (_vars_to_print ${pkgname}_INCLUDES ${pkgname_upper}_INCLUDES
-                                    ${pkgname}_INCLUDE_DIR ${pkgname_upper}_INCLUDE_DIR
-                                    ${pkgname}_INCLUDE_DIRS ${pkgname_upper}_INCLUDE_DIRS
-                                    ${pkgname}_LIBRARIES ${pkgname_upper}_LIBRARIES
-                                    ${_pkg_PRINT})
-                list (REMOVE_DUPLICATES _vars_to_print)
-                foreach (_v IN LISTS _vars_to_print)
-                    if (NOT "${${_v}}" STREQUAL "")
-                        message (STATUS "    ${_v} = ${${_v}}")
-                    endif ()
-                endforeach ()
-            endif ()
-            add_definitions (${_pkg_DEFINITIONS})
-        else ()
-            message (STATUS "${ColorRed}${pkgname} library not found ${ColorReset}")
-            if (${pkgname}_ROOT)
-                message (STATUS "${ColorRed}    ${pkgname}_ROOT was: ${${pkgname}_ROOT} ${ColorReset}")
-            elseif ($ENV{${pkgname}_ROOT})
-                message (STATUS "${ColorRed}    ENV ${pkgname}_ROOT was: ${${pkgname}_ROOT} ${ColorReset}")
-            else ()
-                message (STATUS "${ColorRed}    Try setting ${pkgname}_ROOT ? ${ColorReset}")
-            endif ()
-            if (EXISTS "${PROJECT_SOURCE_DIR}/src/build-scripts/build_${pkgname}.bash")
-                message (STATUS "${ColorRed}    Maybe this will help:  src/build-scripts/build_${pkgname}.bash ${ColorReset}")
-            endif ()
-            if (_pkg_REQUIRED)
-                message (FATAL_ERROR "${ColorRed}${pkgname} is required, aborting.${ColorReset}")
-            endif ()
-        endif()
-    else ()
-        if (NOT _quietskip)
-            message (STATUS "${ColorRed}Not using ${pkgname} -- disabled ${_disablereason} ${ColorReset}")
-        endif ()
-    endif ()
-endmacro()
-
-
-

 include (ExternalProject)

@@ -183,8 +57,11 @@ else ()
    # to set the expected variables printed below. So until that's fixed
    # force FindBoost.cmake to use the original brute force path.
    set (Boost_NO_BOOST_CMAKE ON)
-    checked_find_package (Boost 1.55 REQUIRED
+    checked_find_package (Boost REQUIRED
+                       VERSION_MIN 1.55
                       COMPONENTS ${Boost_COMPONENTS}
+                       RECOMMEND_MIN 1.66
+                       RECOMMEND_MIN_REASON "Boost 1.66 is the oldest version our CI tests against"
                       PRINT Boost_INCLUDE_DIRS Boost_LIBRARIES
                      )
 endif ()
@@ -205,10 +82,19 @@ link_directories ("${Boost_LIBRARY_DIRS}")
 checked_find_package (ZLIB REQUIRED)  # Needed by several packages

 # IlmBase & OpenEXR
-checked_find_package (OpenEXR 2.0 REQUIRED)
-# We use Imath so commonly, may as well include it everywhere.
-include_directories ("${OPENEXR_INCLUDES}" "${ILMBASE_INCLUDES}"
-                     "${ILMBASE_INCLUDES}/OpenEXR")
+checked_find_package (OpenEXR REQUIRED
+                      VERSION_MIN 2.0
+                      RECOMMEND_MIN 2.2
+                      RECOMMEND_MIN_REASON
+                        "OpenEXR 2.2 is the oldest version our CI tests against, and the minimum that supports DWA compression"
+                      PRINT IMATH_INCLUDES
+                     )
+# Force Imath includes to be before everything else to ensure that we have
+# the right Imath/OpenEXR version, not some older version in the system
+# library. This shoudn't be necessary, except for the common case of people
+# building against Imath/OpenEXR 3.x when there is still a system-level
+# install version of 2.x.
+include_directories(BEFORE ${IMATH_INCLUDES})
 if (CMAKE_COMPILER_IS_CLANG AND OPENEXR_VERSION VERSION_LESS 2.3)
    # clang C++ >= 11 doesn't like 'register' keyword in old exr headers
    add_compile_options (-Wno-deprecated-register)
@@ -221,18 +107,21 @@ endif ()
 # OpenImageIO
 set (OIIO_LIBNAME_SUFFIX "" CACHE STRING
     "Optional name appended to OIIO libraries that are built")
-checked_find_package (OpenImageIO 2.0 REQUIRED
+checked_find_package (OpenImageIO REQUIRED
+                      VERSION_MIN 2.0
                      PRINT OIIOTOOL_BIN)
 if (OPENIMAGEIO_FOUND)
    include_directories ("${OPENIMAGEIO_INCLUDES}")
 endif ()


-checked_find_package (pugixml REQUIRED)
+checked_find_package (pugixml REQUIRED
+                      VERSION_MIN 1.8)


 # LLVM library setup
-checked_find_package (LLVM 7.0 REQUIRED
+checked_find_package (LLVM REQUIRED
+                      VERSION_MIN 7.0
                      PRINT LLVM_SYSTEM_LIBRARIES CLANG_LIBRARIES)
 # ensure include directory is added (in case of non-standard locations
 include_directories (BEFORE SYSTEM "${LLVM_INCLUDES}")
@@ -255,10 +144,25 @@ if (LLVM_VERSION VERSION_GREATER_EQUAL 10.0.0 AND
             "icc >= 7, MSVS >= 2017. "
             "If you must use C++11, you need to build against LLVM 9 or earlier.")
 endif ()
+if (APPLE AND LLVM_VERSION VERSION_EQUAL 10.0.1 AND EXISTS "/usr/local/Cellar/llvm")
+    message (WARNING
+             "${ColorYellow}If you are using LLVM 10.0.1 installed by Homebrew, "
+             "please note that a known bug in LLVM may produce a link error where "
+             "it says it can't find libxml2.tbd. If you encounter this, please "
+             "try downgrading to LLVM 9: \n"
+             "    brew uninstall llvm \n"
+             "    brew install llvm@9 \n"
+             "    export LLVM_DIRECTORY=/usr/local/opt/llvm@9 "
+             "${ColorReset}\n")
+endif ()

 checked_find_package (partio)


+# From pythonutils.cmake
+find_python ()
+
+
 # Qt -- used for osltoy
 set (qt5_modules Core Gui Widgets)
 if (OPENGL_FOUND)
@@ -282,14 +186,15 @@ if (USE_CUDA OR USE_OPTIX)
        message (STATUS "CUDA_TOOLKIT_ROOT_DIR = ${CUDA_TOOLKIT_ROOT_DIR}")
    endif ()

-    checked_find_package (CUDA 8.0 REQUIRED
+    checked_find_package (CUDA REQUIRED
+                          VERSION_MIN 8.0
                          PRINT CUDA_INCLUDES)
    set (CUDA_INCLUDES ${CUDA_TOOLKIT_ROOT_DIR}/include)
    include_directories (BEFORE "${CUDA_INCLUDES}")

    STRING (FIND ${LLVM_TARGETS} "NVPTX" nvptx_index)
    if (NOT ${nvptx_index} GREATER -1)
-        message (FATAL_ERROR "NVTPX target is not available in the provided LLVM build")
+        message (FATAL_ERROR "NVPTX target is not available in the provided LLVM build")
    endif()

    if (${CUDA_VERSION} VERSION_GREATER 8 AND ${LLVM_VERSION} VERSION_LESS 6)
@@ -297,14 +202,40 @@ if (USE_CUDA OR USE_OPTIX)
    endif ()

    set (CUDA_LIB_FLAGS "--cuda-path=${CUDA_TOOLKIT_ROOT_DIR}")
-endif ()

+    find_library(cuda_lib NAMES cudart
+                 PATHS "${CUDA_TOOLKIT_ROOT_DIR}/lib64" "${CUDA_TOOLKIT_ROOT_DIR}/x64"
+                 REQUIRED)
+    set(CUDA_LIBRARIES ${cuda_lib})

-# OptiX setup
-if (USE_OPTIX)
-    checked_find_package (OptiX 5.1 REQUIRED)
-    include_directories (BEFORE "${OPTIX_INCLUDES}")
-    if (NOT USE_LLVM_BITCODE OR NOT USE_FAST_MATH)
-        message (FATAL_ERROR "Enabling OptiX requires USE_LLVM_BITCODE=1 and USE_FAST_MATH=1")
+    # testrender & testshade need libnvrtc
+    if ("${CUDA_VERSION}" VERSION_GREATER_EQUAL "10.0")
+        find_library(nvrtc_lib NAMES nvrtc
+                     PATHS "${CUDA_TOOLKIT_ROOT_DIR}/lib64" "${CUDA_TOOLKIT_ROOT_DIR}/x64"
+                     REQUIRED)
+        set(CUDA_LIBRARIES ${CUDA_LIBRARIES} ${nvrtc_lib})
+
+        set(CUDA_EXTRA_LIBS ${CUDA_EXTRA_LIBS} dl)
+    endif()
+
+    # OptiX setup
+    if (USE_OPTIX)
+        checked_find_package (OptiX REQUIRED
+                              VERSION_MIN 5.1)
+        include_directories (BEFORE "${OPTIX_INCLUDES}")
+        if (NOT USE_LLVM_BITCODE OR NOT USE_FAST_MATH)
+            message (FATAL_ERROR "Enabling OptiX requires USE_LLVM_BITCODE=1 and USE_FAST_MATH=1")
+        endif ()
    endif ()
+
+    function (osl_optix_target TARGET)
+        target_include_directories (${TARGET} BEFORE PRIVATE ${CUDA_INCLUDES} ${OPTIX_INCLUDES})
+        ## XXX: Should -DPTX_PATH point to (or include) CMAKE_CURRENT_BINARY_DIR so tests can run before installation ?
+        target_compile_definitions (${TARGET} PRIVATE "-DPTX_PATH=\"${OSL_PTX_INSTALL_DIR}\"")
+        target_link_libraries (${TARGET} PRIVATE ${CUDA_LIBRARIES} ${CUDA_EXTRA_LIBS} ${OPTIX_LIBRARIES} ${OPTIX_EXTRA_LIBS})
+    endfunction()
+
+else ()
+    function (osl_optix_target TARGET)
+    endfunction()
 endif ()
@@ -1,12 +1,12 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # Macro to add an executable build target. The executable name can be
 # specified with NAME, otherwise is inferred from the subdirectory name. The
-# source files of the binary can be specifeied with SRC, otherwise are
+# source files of the binary can be specified with SRC, otherwise are
 # inferred to be all the .cpp files within the subdirectory. Optional
-# compile DEFINITIONS, private INCLUDE_DIRS, and priviate LINK_LIBRARIES may
+# compile DEFINITIONS, private INCLUDE_DIRS, and private LINK_LIBRARIES may
 # also be specified.
 #
 # The executable may be disabled individually using any of the usual
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # LG's macros for using flex and bison.
 # Merely including this file will require flex and bison to be found.
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # Module to find LLVM
 #
@@ -30,9 +30,11 @@ list (APPEND LLVM_CONFIG_PATH_HINTS
        "/usr/local/opt/llvm/bin/")
 find_program (LLVM_CONFIG
              NAMES llvm-config-${LLVM_VERSION} llvm-config
+                    llvm-config-64-${LLVM_VERSION} llvm-config-64
              HINTS ${LLVM_CONFIG_PATH_HINTS} NO_DEFAULT_PATH)
 find_program (LLVM_CONFIG
              NAMES llvm-config-${LLVM_VERSION} llvm-config
+                    llvm-config-64-${LLVM_VERSION} llvm-config-64
              HINTS ${LLVM_CONFIG_PATH_HINTS})
 if (NOT LLVM_FIND_QUIETLY)
    message (STATUS "Found llvm-config '${LLVM_CONFIG}'")
@@ -113,7 +115,7 @@ endforeach ()
 #
 # It seems that this is not a problem when linking against the llvm and
 # libclang libraries statically. So on apple and when LLVM 10+ are involved,
-# just force that choice. Other than larger execubales, it seems harmless,
+# just force that choice. Other than larger executables, it seems harmless,
 # and in any case a better choice than this beastly bug.
 #
 # We can periodically revisit this with new version of LLVM, maybe they will
@@ -1,19 +1,111 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

-# Module to find OpenEXR.
+# Module to find OpenEXR and Imath.
+#
+# I'm afraid this is a mess, due to needing to support a wide range of
+# OpenEXR versions.
+#
+# For OpenEXR & Imath 3.0, this will establish the following imported
+# targets:
+#
+#    Imath::Imath
+#    Imath::Half
+#    OpenEXR::OpenEXR
+#    OpenEXR::Iex
+#    OpenEXR::IlmThread
+#
+# For OpenEXR 2.4 & 2.5, it will establish the following imported targets:
+#
+#    IlmBase::Imath
+#    IlmBase::Half
+#    IlmBase::Iex
+#    IlmBase::IlmThread
+#    OpenEXR::IlmImf
+#
+# For all versions -- but for OpenEXR < 2.4 the only thing this sets --
+# are the following CMake variables:
 #
-# This module will set
 #   OPENEXR_FOUND          true, if found
-#   OPENEXR_INCLUDES       directory where headers are found
+#   OPENEXR_INCLUDES       directory where OpenEXR headers are found
 #   OPENEXR_LIBRARIES      libraries for OpenEXR + IlmBase
-#   ILMBASE_LIBRARIES      libraries just IlmBase
 #   OPENEXR_VERSION        OpenEXR version (accurate for >= 2.0.0,
 #                              otherwise will just guess 1.6.1)
+#   IMATH_INCLUDES         directory where Imath headers are found
+#   ILMBASE_INCLUDES       directory where IlmBase headers are found
+#   ILMBASE_LIBRARIES      libraries just IlmBase
 #
 #

+# First, try to fine just the right config files
+find_package(Imath CONFIG)
+if (NOT TARGET Imath::Imath)
+    # Couldn't find Imath::Imath, maybe it's older and has IlmBase?
+    find_package(IlmBase CONFIG)
+endif ()
+find_package(OpenEXR CONFIG)
+
+if (TARGET OpenEXR::OpenEXR AND TARGET Imath::Imath)
+    # OpenEXR 3.x if both of these targets are found
+    if (NOT OpenEXR_FIND_QUIETLY)
+        message (STATUS "Found CONFIG for OpenEXR 3 (OPENEXR_VERSION=${OpenEXR_VERSION})")
+    endif ()
+
+    # Mimic old style variables
+    set (OPENEXR_VERSION ${OpenEXR_VERSION})
+    get_target_property(IMATH_INCLUDES Imath::Imath INTERFACE_INCLUDE_DIRECTORIES)
+    get_target_property(ILMBASE_INCLUDES Imath::Imath INTERFACE_INCLUDE_DIRECTORIES)
+    get_target_property(ILMBASE_IMATH_LIBRARY Imath::Imath INTERFACE_LINK_LIBRARIES)
+    get_target_property(IMATH_LIBRARY Imath::Imath INTERFACE_LINK_LIBRARIES)
+    get_target_property(OPENEXR_IEX_LIBRARY OpenEXR::Iex INTERFACE_LINK_LIBRARIES)
+    get_target_property(OPENEXR_ILMTHREAD_LIBRARY OpenEXR::IlmThread INTERFACE_LINK_LIBRARIES)
+    set (ILMBASE_LIBRARIES ${ILMBASE_IMATH_LIBRARY})
+    set (ILMBASE_FOUND true)
+
+    get_target_property(OPENEXR_INCLUDES OpenEXR::OpenEXR INTERFACE_INCLUDE_DIRECTORIES)
+    get_target_property(OPENEXR_ILMIMF_LIBRARY OpenEXR::OpenEXR INTERFACE_LINK_LIBRARIES)
+    set (OPENEXR_LIBRARIES ${OPENEXR_ILMIMF_LIBRARY} ${OPENEXR_IEX_LIBRARY} ${OPENEXR_ILMTHREAD_LIBRARY} ${ILMBASE_LIBRARIES})
+    set (OPENEXR_FOUND true)
+
+    # Link with pthreads if required
+    find_package (Threads)
+    if (CMAKE_USE_PTHREADS_INIT)
+        list (APPEND ILMBASE_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
+    endif ()
+
+elseif (TARGET OpenEXR::IlmImf AND TARGET IlmBase::Imath AND OPENEXR_VERSION VERSION_GREATER_EQUAL 2.4)
+    # OpenEXR 2.4 or 2.5 with exported config
+    if (NOT OpenEXR_FIND_QUIETLY)
+        message (STATUS "Found CONFIG for OpenEXR 2 (OPENEXR_VERSION=${OpenEXR_VERSION})")
+    endif ()
+
+    # Mimic old style variables
+    get_target_property(ILMBASE_INCLUDES IlmBase::IlmBaseConfig INTERFACE_INCLUDE_DIRECTORIES)
+    get_target_property(IMATH_INCLUDES IlmBase::IlmBaseConfig INTERFACE_INCLUDE_DIRECTORIES)
+    get_target_property(ILMBASE_Imath_LIBRARY IlmBase::Imath INTERFACE_LINK_LIBRARIES)
+    get_target_property(ILMBASE_IMATH_LIBRARY IlmBase::Imath INTERFACE_LINK_LIBRARIES)
+    get_target_property(ILMBASE_HALF_LIBRARY IlmBase::Half INTERFACE_LINK_LIBRARIES)
+    get_target_property(OPENEXR_IEX_LIBRARY IlmBase::Iex INTERFACE_LINK_LIBRARIES)
+    get_target_property(OPENEXR_ILMTHREAD_LIBRARY IlmBase::IlmThread INTERFACE_LINK_LIBRARIES)
+    set (ILMBASE_LIBRARIES ${ILMBASE_IMATH_LIBRARY} ${ILMBASE_HALF_LIBRARY} ${OPENEXR_IEX_LIBRARY} ${OPENEXR_ILMTHREAD_LIBRARY})
+    set (ILMBASE_FOUND true)
+
+    get_target_property(OPENEXR_INCLUDES OpenEXR::IlmImfConfig INTERFACE_INCLUDE_DIRECTORIES)
+    get_target_property(OPENEXR_ILMIMF_LIBRARY OpenEXR::IlmImf INTERFACE_LINK_LIBRARIES)
+    set (OPENEXR_LIBRARIES ${OPENEXR_ILMIMF_LIBRARY} ${ILMBASE_LIBRARIES})
+    set (OPENEXR_FOUND true)
+
+    # Link with pthreads if required
+    find_package (Threads)
+    if (CMAKE_USE_PTHREADS_INIT)
+        list (APPEND ILMBASE_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
+    endif ()
+
+else ()
+    # OpenEXR 2.x older versions without a config or whose configs we don't
+    # trust.
+
 # Other standard issue macros
 include (FindPackageHandleStandardArgs)
 include (SelectLibraryConfigurations)
@@ -135,17 +227,20 @@ find_package_handle_standard_args (OpenEXR
    REQUIRED_VARS ILMBASE_INCLUDE_PATH OPENEXR_INCLUDE_PATH
                  OPENEXR_IMATH_LIBRARY OPENEXR_ILMIMF_LIBRARY
                  OPENEXR_IEX_LIBRARY OPENEXR_HALF_LIBRARY
-    VERSION_VAR   OPENEXR_VERSION
    )

 if (OPENEXR_FOUND)
+    set (OpenEXR_VERSION ${OPENEXR_VERSION})
    set (ILMBASE_FOUND TRUE)
    set (ILMBASE_INCLUDES ${ILMBASE_INCLUDE_PATH})
+    set (IMATH_INCLUDES ${ILMBASE_INCLUDE_PATH})
    set (OPENEXR_INCLUDES ${OPENEXR_INCLUDE_PATH})
    set (ILMBASE_INCLUDE_DIR ${ILMBASE_INCLUDE_PATH})
+    set (IMATH_INCLUDE_DIR ${ILMBASE_INCLUDE_PATH})
    set (OPENEXR_INCLUDE_DIR ${OPENEXR_INCLUDE_PATH})
    set (ILMBASE_LIBRARIES ${OPENEXR_IMATH_LIBRARY} ${OPENEXR_IEX_LIBRARY} ${OPENEXR_HALF_LIBRARY} ${OPENEXR_ILMTHREAD_LIBRARY} ${ILMBASE_PTHREADS} CACHE STRING "The libraries needed to use IlmBase")
    set (OPENEXR_LIBRARIES ${OPENEXR_ILMIMF_LIBRARY} ${ILMBASE_LIBRARIES} ${ZLIB_LIBRARIES} CACHE STRING "The libraries needed to use OpenEXR")
+    set (FINDOPENEXR_FALLBACK TRUE)
 endif ()

 mark_as_advanced(
@@ -157,3 +252,5 @@ mark_as_advanced(

 # Restore the original CMAKE_FIND_LIBRARY_SUFFIXES
 set (CMAKE_FIND_LIBRARY_SUFFIXES ${_openexr_orig_suffixes})
+
+endif ()
@@ -41,9 +41,9 @@
 # NOTE: This file is deprecated.
 #
 # In OIIO 2.1+, we generate OpenImageIOConfig.cmake files that are now the
-# preferred way for downstream projecs to find an installed OIIO. There
+# preferred way for downstream projects to find an installed OIIO. There
 # should be no need to copy this FindOpenImageIO.cmake file into downstream
-# projects, *unless* they need to work with a range of OIIO vesions that
+# projects, *unless* they need to work with a range of OIIO versions that
 # may include <2.1, which would lack the generated config files.
 #
 ###########################################################################
@@ -1,13 +1,13 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 ###########################################################################
 # CMake module to find OptiX
 #
 # This module will set
 #   OPTIX_FOUND          True, if OptiX is found
-#   OPTIX_INCLUDE_DIR    directory where OptiX headers are found
+#   OPTIX_INCLUDES       directory where OptiX headers are found
 #   OPTIX_LIBRARIES      libraries for OptiX
 #
 # Special inputs:
@@ -52,16 +52,18 @@ macro(OPTIX_find_api_library name version)
    endif()
 endmacro()

-# Pull out the API version from optix.h
-file(STRINGS ${OPTIX_INCLUDE_DIR}/optix.h OPTIX_VERSION_LINE LIMIT_COUNT 1 REGEX "define OPTIX_VERSION")
-string(REGEX MATCH "([0-9]+)" OPTIX_VERSION_STRING "${OPTIX_VERSION_LINE}")
-math(EXPR OPTIX_VERSION_MAJOR "${OPTIX_VERSION_STRING}/10000")
-math(EXPR OPTIX_VERSION_MINOR "(${OPTIX_VERSION_STRING}%10000)/100")
-math(EXPR OPTIX_VERSION_MICRO "${OPTIX_VERSION_STRING}%100")
-set(OPTIX_VERSION "${OPTIX_VERSION_MAJOR}.${OPTIX_VERSION_MINOR}.${OPTIX_VERSION_MICRO}")
+if (OPTIX_INCLUDE_DIR)
+    # Pull out the API version from optix.h
+    file(STRINGS ${OPTIX_INCLUDE_DIR}/optix.h OPTIX_VERSION_LINE LIMIT_COUNT 1 REGEX "define OPTIX_VERSION")
+    string(REGEX MATCH "([0-9]+)" OPTIX_VERSION_STRING "${OPTIX_VERSION_LINE}")
+    math(EXPR OPTIX_VERSION_MAJOR "${OPTIX_VERSION_STRING}/10000")
+    math(EXPR OPTIX_VERSION_MINOR "(${OPTIX_VERSION_STRING}%10000)/100")
+    math(EXPR OPTIX_VERSION_MICRO "${OPTIX_VERSION_STRING}%100")
+    set(OPTIX_VERSION "${OPTIX_VERSION_MAJOR}.${OPTIX_VERSION_MINOR}.${OPTIX_VERSION_MICRO}")
+endif ()

 # OptiX 7 doesn't link to any libraries
-if (${OPTIX_VERSION_MAJOR} LESS 7)
+if (OPTIX_VERSION VERSION_LESS 7)
    OPTIX_find_api_library(optix ${OPTIX_VERSION})
    OPTIX_find_api_library(optixu ${OPTIX_VERSION})
    OPTIX_find_api_library(optix_prime ${OPTIX_VERSION})
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # Find the Partio library.
 #
@@ -0,0 +1,79 @@
+# Copyright Contributors to the Open Shading Language project.
+# SPDX-License-Identifier: BSD-3-Clause
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
+
+# Find the pugixml XML parsing library.
+#
+# Sets the usual variables expected for find_package scripts:
+#
+# PUGIXML_INCLUDES - header location
+# PUGIXML_LIBRARIES - library to link against
+# PUGIXML_FOUND - true if pugixml was found.
+
+# First try the config files and hope they're good enough
+find_package (pugixml CONFIG)
+
+if (TARGET pugixml::pugixml)
+    # New pugixml (>= 1.11) has nice config files we can rely on and makes a
+    # pugixml::pugixml target.
+    message (STATUS "Found CONFIG for pugixml (>=1.11)")
+
+    set (PUGIXML_FOUND true)
+    set (pugixml_FOUND true)
+    get_target_property(PUGIXML_INCLUDES pugixml::pugixml INTERFACE_INCLUDE_DIRECTORIES)
+    get_target_property(PUGIXML_LIBRARIES pugixml::pugixml INTERFACE_LINK_LIBRARIES)
+
+# elseif (TARGET pugixml)
+#     # But older pugixml (<= 1.10) has mediocre config files that are not
+#     # reliable in practice. They also only define a "pugixml" target but
+#     # not "pugixml::pugixml". So just fall through to the "no config" case
+#     # below, and figure everything out by hand.
+
+else ()
+    # If no config file is found for PugiXML, do it the old fashioned way.
+    find_path (PUGIXML_INCLUDE_DIR
+               NAMES pugixml.hpp
+               #HINTS ${OpenImageIO_INCLUDE_DIR}/detail/pugixml
+               PATH_SUFFIXES pugixml-1.8 pugixml-1.9 pugixml-1.10)
+    set (pugixml_required_vars PUGIXML_INCLUDE_DIR)
+    find_library (PUGIXML_LIBRARY
+                  NAMES pugixml
+                  PATH_SUFFIXES pugixml-1.8 pugixml-1.9 pugixml-1.10)
+
+    if (PUGIXML_INCLUDE_DIR)
+        file (STRINGS "${PUGIXML_INCLUDE_DIR}/pugixml.hpp" TMP REGEX "define PUGIXML_VERSION .*$")
+        string (REGEX MATCHALL "[0-9]+" PUGIXML_CODED_VERSION ${TMP})
+        if (PUGIXML_CODED_VERSION VERSION_GREATER_EQUAL 1000)
+            math (EXPR PUGIXML_VERSION_MAJOR "${PUGIXML_CODED_VERSION} / 1000")
+            math (EXPR PUGIXML_VERSION_MINOR "(${PUGIXML_CODED_VERSION} % 1000) / 10")
+        else ()
+            math (EXPR PUGIXML_VERSION_MAJOR "${PUGIXML_CODED_VERSION} / 100")
+            math (EXPR PUGIXML_VERSION_MINOR "(${PUGIXML_CODED_VERSION} % 100) / 10")
+        endif ()
+        set (PUGIXML_VERSION ${PUGIXML_VERSION_MAJOR}.${PUGIXML_VERSION_MINOR})
+    endif ()
+
+    # Support the REQUIRED and QUIET arguments, and set PUGIXML_FOUND if found.
+    include (FindPackageHandleStandardArgs)
+    find_package_handle_standard_args (pugixml DEFAULT_MSG
+                                       #PUGIXML_LIBRARY
+                                       PUGIXML_INCLUDE_DIR)
+
+    if (PUGIXML_FOUND OR pugixml_FOUND)
+        set (PUGIXML_INCLUDES ${PUGIXML_INCLUDE_DIR})
+        set (PUGIXML_LIBRARIES ${PUGIXML_LIBRARY})
+
+        if (NOT TARGET pugixml::pugixml)
+            add_library(pugixml::pugixml UNKNOWN IMPORTED)
+            set_target_properties(pugixml::pugixml PROPERTIES
+                INTERFACE_INCLUDE_DIRECTORIES "${PUGIXML_INCLUDES}")
+            if (PUGIXML_LIBRARIES)
+                set_property(TARGET pugixml::pugixml APPEND PROPERTY
+                    IMPORTED_LOCATION "${PUGIXML_LIBRARIES}")
+            endif ()
+        endif ()
+    endif ()
+
+    mark_as_advanced (PUGIXML_LIBRARY PUGIXML_INCLUDE_DIR)
+
+endif()
@@ -0,0 +1,34 @@
+# Copyright Contributors to the Open Shading Languge project.
+# SPDX-License-Identifier: BSD-3-Clause
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/
+
+#########################################################################
+# Packaging
+set (CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
+set (CPACK_PACKAGE_VERSION_MINOR ${PROJECT_VERSION_MINOR})
+set (CPACK_PACKAGE_VERSION_PATCH ${PROJECT_VERSION_PATCH})
+# "Vendor" is only used in copyright notices, so we use the same thing that
+# the rest of the copyright notices say.
+set (CPACK_PACKAGE_VENDOR ${PROJECT_AUTHORS})
+set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "Open Shading Language is the de facto standard for shading in modern path tracers used in film VFX and animation")
+set (CPACK_PACKAGE_DESCRIPTION_FILE "${PROJECT_SOURCE_DIR}/src/doc/Description.txt")
+set (CPACK_PACKAGE_FILE_NAME ${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}-${platform})
+file (COPY "${PROJECT_SOURCE_DIR}/LICENSE.md" DESTINATION "${CMAKE_BINARY_DIR}")
+set (CPACK_RESOURCE_FILE_LICENSE "${CMAKE_BINARY_DIR}/LICENSE.md")
+file (COPY "${PROJECT_SOURCE_DIR}/README.md" DESTINATION "${CMAKE_BINARY_DIR}")
+set (CPACK_RESOURCE_FILE_README "${CMAKE_BINARY_DIR}/README.md")
+set (CPACK_RESOURCE_FILE_WELCOME "${PROJECT_SOURCE_DIR}/src/doc/Welcome.txt")
+#set (CPACK_PACKAGE_EXECUTABLES I'm not sure what this is for)
+#set (CPACK_STRIP_FILES Do we need this?)
+if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+    set (CPACK_GENERATOR "TGZ;STGZ;RPM;DEB")
+    set (CPACK_SOURCE_GENERATOR "TGZ")
+endif ()
+if (APPLE)
+    set (CPACK_GENERATOR "TGZ;STGZ;PackageMaker")
+    set (CPACK_SOURCE_GENERATOR "TGZ")
+endif ()
+set (CPACK_SOURCE_PACKAGE_FILE_NAME ${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}-source)
+#set (CPACK_SOURCE_STRIP_FILES ...FIXME...)
+set (CPACK_SOURCE_IGNORE_FILES ".*~")
+include (CPack)
@@ -1,10 +1,10 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 # Python-related options.
 option (USE_PYTHON "Build the Python bindings" ON)
-set (PYTHON_VERSION "2.7" CACHE STRING "Target version of python to find")
+set (PYTHON_VERSION "" CACHE STRING "Target version of python to try to find")
 option (PYLIB_INCLUDE_SONAME "If ON, soname/soversion will be set for Python module library" OFF)
 option (PYLIB_LIB_PREFIX "If ON, prefix the Python module with 'lib'" OFF)
 set (PYMODULE_SUFFIX "" CACHE STRING "Suffix to add to Python module init namespace")
@@ -12,10 +12,6 @@ set (PYMODULE_SUFFIX "" CACHE STRING "Suffix to add to Python module init namesp

 # Find Python. This macro should only be called if python is required. If
 # Python cannot be found, it will be a fatal error.
-# Variables set by this macro:
-#    PYTHON_INCLUDES_PATH - directory where python headers are found
-#    PYTHON_LIBRARIES     - python libraries to link
-#    PYTHON_SITE_DIR      - our own install dir where our python moduels go
 macro (find_python)
    if (NOT VERBOSE)
        set (PythonInterp_FIND_QUIETLY true)
@@ -24,34 +20,41 @@ macro (find_python)

    # Attempt to find the desired version, but fall back to other
    # additional versions.
-    checked_find_package (PythonInterp ${PYTHON_VERSION} REQUIRED)
+    unset (_req)
+    if (USE_PYTHON)
+        set (_req REQUIRED)
+        if (PYTHON_VERSION)
+            list (APPEND _req EXACT)
+        endif ()
+    endif ()
+    checked_find_package (Python ${PYTHON_VERSION}
+                          ${_req}
+                          COMPONENTS Interpreter Development
+                          PRINT Python_Development_FOUND Python_VERSION
+                                Python_EXECUTABLE Python_LIBRARIES
+                                Python_Development_FOUND Python_Interpreter_FOUND)

    # The version that was found may not be the default or user
    # defined one.
-    set (PYTHON_VERSION_FOUND ${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR})
+    set (PYTHON_VERSION_FOUND ${Python_VERSION_MAJOR}.${Python_VERSION_MINOR})

-    if (NOT ${PYTHON_VERSION} VERSION_EQUAL ${PYTHON_VERSION_FOUND} )
-        message (WARNING "The requested version ${PYTHON_VERSION} was not found.") 
-        message (WARNING "Using ${PYTHON_VERSION_FOUND} instead.")
-    endif ()
-
-    checked_find_package (PythonLibs ${PYTHON_VERSION_FOUND} REQUIRED)
-    if (VERBOSE)
-        message (STATUS "    Python include dirs ${PYTHON_INCLUDE_PATH}")
-        message (STATUS "    Python libraries    ${PYTHON_LIBRARIES}")
-        message (STATUS "    Python site packages dir ${PYTHON_SITE_DIR}")
-        message (STATUS "    Python to include 'lib' prefix: ${PYLIB_LIB_PREFIX}")
-        message (STATUS "    Python to include SO version: ${PYLIB_INCLUDE_SONAME}")
-        message (STATUS "    Python version ${PYTHON_VERSION_STRING}")
-        message (STATUS "    Python version major: ${PYTHON_VERSION_MAJOR} minor: ${PYTHON_VERSION_MINOR}")
-    endif ()
+    # Give hints to subsequent pybind11 searching to ensure that it finds
+    # exactly the same version that we found.
+    set (PythonInterp_FIND_VERSION PYTHON_VERSION_FOUND)
+    set (PythonInterp_FIND_VERSION_MAJOR ${Python_VERSION_MAJOR})

    if (NOT DEFINED PYTHON_SITE_DIR)
        set (PYTHON_SITE_DIR "${CMAKE_INSTALL_LIBDIR}/python${PYTHON_VERSION_FOUND}/site-packages")
    endif ()
+    if (VERBOSE)
+        message (STATUS "    Python site packages dir ${PYTHON_SITE_DIR}")
+        message (STATUS "    Python to include 'lib' prefix: ${PYLIB_LIB_PREFIX}")
+        message (STATUS "    Python to include SO version: ${PYLIB_INCLUDE_SONAME}")
+    endif ()
 endmacro()


+
 ###########################################################################
 # pybind11

@@ -69,16 +72,14 @@ macro (setup_python_module)
    # Add the library itself
    add_library (${target_name} MODULE ${lib_SOURCES})

-    # Set up include dirs for python & pybind11
-    target_include_directories (${target_name} SYSTEM PRIVATE ${PYTHON_INCLUDE_PATH})
-
    # Declare the libraries it should link against
-    target_link_libraries (${target_name} PRIVATE
-                           pybind11::pybind11 ${lib_LIBS} ${SANITIZE_LIBRARIES})
+    target_link_libraries (${target_name}
+                           PRIVATE
+                                pybind11::pybind11
+                                Python::Python
+                                ${lib_LIBS} ${SANITIZE_LIBRARIES})
    if (APPLE)
        set_target_properties (${target_name} PROPERTIES LINK_FLAGS "-undefined dynamic_lookup")
-    else ()
-        target_link_libraries (${target_name} PRIVATE ${PYTHON_LIBRARIES})
    endif ()

    # Exclude the 'lib' prefix from the name
@@ -0,0 +1,264 @@
+# Copyright Contributors to the Open Shading Languge project.
+# SPDX-License-Identifier: BSD-3-Clause
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/
+
+include (CTest)
+
+# Make a build/platform/testsuite directory, and copy the master runtest.py
+# there. The rest is up to the tests themselves.
+file (MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/testsuite")
+file (COPY "${CMAKE_CURRENT_SOURCE_DIR}/testsuite/common"
+      DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/testsuite")
+add_custom_command (OUTPUT "${CMAKE_BINARY_DIR}/testsuite/runtest.py"
+                    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+                        "${CMAKE_SOURCE_DIR}/testsuite/runtest.py"
+                        "${CMAKE_BINARY_DIR}/testsuite/runtest.py"
+                    MAIN_DEPENDENCY "${CMAKE_SOURCE_DIR}/testsuite/runtest.py")
+add_custom_target ( CopyFiles ALL DEPENDS "${CMAKE_BINARY_DIR}/testsuite/runtest.py" )
+
+# add_one_testsuite() - set up one testsuite entry
+#
+# Usage:
+#   add_one_testsuite ( testname
+#                  testsrcdir - Current test directory in ${CMAKE_SOURCE_DIR}
+#                  testdir    - Current test sandbox in ${CMAKE_BINARY_DIR}
+#                  [ENV env1=val1 env2=val2 ... ]  - env vars to set
+#                  [COMMAND cmd...] - optional override of launch command
+#                 )
+#
+macro (add_one_testsuite testname testsrcdir)
+    cmake_parse_arguments (_tst "" "" "ENV;COMMAND" ${ARGN})
+    set (testsuite "${CMAKE_SOURCE_DIR}/testsuite")
+    set (testdir "${CMAKE_BINARY_DIR}/testsuite/${testname}")
+    if (NOT _tst_COMMAND)
+        set (_tst_COMMAND ${Python_EXECUTABLE} "${testsuite}/runtest.py" ${testdir})
+        if (MSVC_IDE)
+            list (APPEND _tst_COMMAND --devenv-config $<CONFIGURATION>
+                                      --solution-path "${CMAKE_BINARY_DIR}" )
+        endif ()
+    endif ()
+    list (APPEND _tst_ENV
+              OpenImageIO_ROOT=${OpenImageIO_ROOT}
+              OSL_SOURCE_DIR=${CMAKE_SOURCE_DIR}
+              OSL_BUILD_DIR=${CMAKE_BINARY_DIR}
+              OSL_TESTSUITE_ROOT=${testsuite}
+              OSL_TESTSUITE_SRC=${testsrcdir}
+              OSL_TESTSUITE_CUR=${testdir}
+         )
+    file (MAKE_DIRECTORY "${testdir}")
+    add_test ( NAME ${testname} COMMAND ${_tst_COMMAND} )
+    # message ("Test -- env ${_tst_ENV} cmd ${_tst_COMMAND}")
+    set_tests_properties (${testname} PROPERTIES ENVIRONMENT "${_tst_ENV}" )
+    # Certain tests are already internally multi-threaded, so to keep them
+    # from piling up together, allocate a few cores each.
+    if (${testname} MATCHES "^render-")
+        set_tests_properties (${testname} PROPERTIES LABELS render
+                              PROCESSORS 4 COST 10)
+    endif ()
+    # Some labeling for fun
+    if (${testname} MATCHES "^texture-")
+        set_tests_properties (${testname} PROPERTIES LABELS texture
+                              PROCESSORS 2 COST 4)
+    endif ()
+    if (${testname} MATCHES "noise")
+        set_tests_properties (${testname} PROPERTIES LABELS noise
+                              PROCESSORS 2 COST 4)
+    endif ()
+    if (${testname} MATCHES "optix")
+        set_tests_properties (${testname} PROPERTIES LABELS optix)
+        if ("${CUDA_VERSION}" VERSION_GREATER_EQUAL "10.0")
+            # Make sure libnvrtc-builtins.so is reachable
+            set_property (TEST ${testname} APPEND PROPERTY ENVIRONMENT LD_LIBRARY_PATH=${CUDA_TOOLKIT_ROOT_DIR}/lib64)
+        endif()
+    endif ()
+endmacro ()
+
+
+macro ( TESTSUITE )
+    cmake_parse_arguments (_ats "" "LABEL;FOUNDVAR;TESTNAME" "" ${ARGN})
+    # If there was a FOUNDVAR param specified and that variable name is
+    # not defined, mark the test as broken.
+    if (_ats_FOUNDVAR AND NOT ${_ats_FOUNDVAR})
+        set (_ats_LABEL "broken")
+    endif ()
+    set (test_all_optix $ENV{TESTSUITE_OPTIX})
+    # Add the tests if all is well.
+    set (ALL_TEST_LIST "")
+    set (_testsuite "${CMAKE_SOURCE_DIR}/testsuite")
+    foreach (_testname ${_ats_UNPARSED_ARGUMENTS})
+        set (_testsrcdir "${_testsuite}/${_testname}")
+        if (_ats_TESTNAME)
+            set (_testname "${_ats_TESTNAME}")
+        endif ()
+        if (_ats_LABEL MATCHES "broken")
+            set (_testname "${_testname}-broken")
+        endif ()
+
+        set (ALL_TEST_LIST "${ALL_TEST_LIST} ${_testname}")
+
+        # Run the test unoptimized, unless it matches a few patterns that
+        # we don't test unoptimized (or has an OPTIMIZEONLY marker file).
+        if (NOT _testname MATCHES "^getattribute-shader" AND
+            NOT _testname MATCHES "optix" AND
+            NOT EXISTS "${_testsrcdir}/OPTIMIZEONLY")
+            add_one_testsuite ("${_testname}" "${_testsrcdir}"
+                               ENV TESTSHADE_OPT=0 )
+        endif ()
+        # Run the same test again with aggressive -O2 runtime
+        # optimization, triggered by setting TESTSHADE_OPT env variable.
+        # Skip OptiX-only tests and those with a NOOPTIMIZE marker file.
+        if (NOT _testname MATCHES "optix"
+                AND NOT EXISTS "${_testsrcdir}/NOOPTIMIZE")
+            add_one_testsuite ("${_testname}.opt" "${_testsrcdir}"
+                               ENV TESTSHADE_OPT=2 )
+        endif ()
+        # When building for OptiX support, also run it in OptiX mode
+        # if there is an OPTIX marker file in the directory.
+        # If an environment variable $TESTSUITE_OPTIX is nonzero, then
+        # run all tests with OptiX, even if there's no OPTIX marker.
+        if (USE_OPTIX
+            AND (EXISTS "${_testsrcdir}/OPTIX" OR test_all_optix OR _testname MATCHES "optix")
+            AND NOT EXISTS "${_testsrcdir}/NOOPTIX"
+            AND NOT EXISTS "${_testsrcdir}/NOOPTIX-FIXME")
+            # Unoptimized
+            if (NOT EXISTS "${_testsrcdir}/OPTIMIZEONLY")
+                add_one_testsuite ("${_testname}.optix" "${_testsrcdir}"
+                                   ENV TESTSHADE_OPT=0 TESTSHADE_OPTIX=1 )
+            endif ()
+            # and optimized
+            add_one_testsuite ("${_testname}.optix.opt" "${_testsrcdir}"
+                               ENV TESTSHADE_OPT=2 TESTSHADE_OPTIX=1 )
+        endif ()
+    endforeach ()
+    if (VERBOSE)
+        message (STATUS "Added tests: ${ALL_TEST_LIST}")
+    endif ()
+endmacro ()
+
+
+macro (osl_add_all_tests)
+    # List all the individual testsuite tests here, except those that need
+    # special installed tests.
+    TESTSUITE ( aastep allowconnect-err and-or-not-synonyms arithmetic
+                array array-derivs array-range array-aassign
+                blackbody blendmath breakcont
+                bug-array-heapoffsets bug-locallifetime bug-outputinit
+                bug-param-duplicate bug-peep bug-return
+                cellnoise closure closure-array color comparison
+                compile-buffer
+                component-range
+                connect-components
+                const-array-params const-array-fill
+                debugnan debug-uninit
+                derivs derivs-muldiv-clobber
+                draw_string
+                error-dupes error-serialized
+                exit exponential
+                fprintf
+                function-earlyreturn function-simple function-outputelem
+                function-overloads function-redef
+                geomath getattribute-camera getattribute-shader
+                getsymbol-nonheap gettextureinfo
+                group-outputs groupstring
+                hash hashnoise hex hyperb
+                ieee_fp if incdec initlist initops intbits isconnected isconstant
+                layers layers-Ciassign layers-entry layers-lazy layers-lazyerror
+                layers-nonlazycopy layers-repeatedoutputs
+                linearstep
+                logic loop matrix message
+                mergeinstances-duplicate-entrylayers
+                mergeinstances-nouserdata mergeinstances-vararray
+                metadata-braces miscmath missing-shader
+                named-components
+                noise noise-cell
+                noise-gabor noise-gabor2d-filter noise-gabor3d-filter
+                noise-perlin noise-simplex
+                pnoise pnoise-cell pnoise-gabor pnoise-perlin
+                operator-overloading
+                opt-warnings
+                oslc-comma oslc-D oslc-M
+                oslc-err-arrayindex oslc-err-assignmenttypes
+                oslc-err-closuremul oslc-err-field
+                oslc-err-format oslc-err-funcoverload
+                oslc-err-intoverflow oslc-err-write-nonoutput
+                oslc-err-noreturn oslc-err-notfunc
+                oslc-err-initlist-args oslc-err-initlist-return
+                oslc-err-named-components
+                oslc-err-outputparamvararray oslc-err-paramdefault
+                oslc-err-struct-array-init oslc-err-struct-ctr
+                oslc-err-struct-dup oslc-err-struct-print
+                oslc-err-unknown-ctr
+                # oslc-pragma-warnerr
+                oslc-warn-commainit
+                oslc-variadic-macro
+                oslc-version
+                oslinfo-arrayparams oslinfo-colorctrfloat
+                oslinfo-metadata oslinfo-noparams
+                osl-imageio
+                paramval-floatpromotion
+                pragma-nowarn
+                printf-whole-array
+                raytype raytype-specialized reparam
+                render-background render-bumptest
+                render-cornell render-furnace-diffuse
+                render-microfacet render-oren-nayar render-veachmis render-ward
+                select shortcircuit spline splineinverse splineinverse-ident
+                spline-boundarybug spline-derivbug
+                string
+                struct struct-array struct-array-mixture
+                struct-err struct-init-copy
+                struct-isomorphic-overload struct-layers
+                struct-operator-overload struct-return struct-with-array
+                struct-nested struct-nested-assign struct-nested-deep
+                ternary
+                testshade-expr
+                texture-alpha texture-alpha-derivs
+                texture-blur texture-connected-options
+                texture-derivs texture-errormsg
+                texture-firstchannel texture-interp
+                texture-missingalpha texture-missingcolor texture-simple
+                texture-smallderivs texture-swirl texture-udim
+                texture-width texture-withderivs texture-wrap
+                trailing-commas
+                transitive-assign
+                transform transformc trig typecast
+                unknown-instruction
+                userdata userdata-passthrough
+                vararray-connect vararray-default
+                vararray-deserialize vararray-param
+                vecctr vector
+                wavelength_color Werror xml )
+
+    if (OPENIMAGEIO_VERSION VERSION_GREATER_EQUAL 2.1)
+        # I'm too lazy to set this test up to work with OIIO versions too
+        # old to have proper exported cmake config files. So just skip it
+        # for OIIO 2.0.
+        TESTSUITE (example-deformer)
+    endif ()
+
+    # Add tests that require the Python bindings if we built them.
+    # We also exclude these tests if this is a sanitizer build on Linux,
+    # because the Python interpreter itself won't be linked with the right asan
+    # libraries to run correctly.
+    if (USE_PYTHON AND NOT SANITIZE_ON_LINUX)
+        TESTSUITE ( python-oslquery )
+    endif ()
+
+    # Only run field3d-related tests if the local OIIO was built with f3d support.
+    execute_process ( COMMAND ${OPENIMAGEIO_BIN} --help
+                      OUTPUT_VARIABLE oiiotool_help )
+    if (oiiotool_help MATCHES "field3d")
+        TESTSUITE ( texture-field3d )
+    endif()
+
+    # Only run pointcloud tests if Partio is found
+    if (PARTIO_FOUND)
+        TESTSUITE ( pointcloud pointcloud-fold )
+    endif ()
+
+    # Only run the OptiX tests if OptiX and CUDA are found
+    if (OPTIX_FOUND AND CUDA_FOUND)
+        TESTSUITE ( testoptix testoptix-noise example-cuda)
+    endif ()
+
+endmacro()
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 set (public_docs osl-languagespec.pdf
                 testshade.md.html
@@ -11,7 +11,7 @@ set (public_docs osl-languagespec.pdf

 install (FILES ${public_docs} DESTINATION ${CMAKE_INSTALL_DOCDIR} COMPONENT documentation)

-install ( FILES "${PROJECT_SOURCE_DIR}/LICENSE"
+install ( FILES "${PROJECT_SOURCE_DIR}/LICENSE.md"
                "${PROJECT_SOURCE_DIR}/INSTALL.md"
                "${PROJECT_SOURCE_DIR}/CHANGES.md"
                "${PROJECT_SOURCE_DIR}/README.md"
@@ -43,7 +43,7 @@ macro (docdeep_generate)
    endif ()
    set (docdeep_program ${CMAKE_SOURCE_DIR}/src/build-scripts/docdeep.py)
    add_custom_command (OUTPUT ${mdfile}
-        COMMAND python ${docdeep_program} -d ${_docdeep_NAME} -s docs.css
+        COMMAND ${Python_EXECUTABLE} ${docdeep_program} -d ${_docdeep_NAME} -s docs.css
                ${_docdeep_SOURCE} > "${CMAKE_CURRENT_BINARY_DIR}/${mdfile}"
        MAIN_DEPENDENCY ${docdeep_program}
        DEPENDS ${_docdeep_SOURCE}
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 PDFLATEX_FLAGS = -interaction=errorstopmode   ###  "--shell-escape"

@@ -1,7 +1,7 @@
 % Copyright 2009-present Contributors to the Open Shading Language project.
 % SPDX-License-Identifier: CC-BY-4.0
 % SPDX-License-Identifier: BSD-3-Clause
-% https://github.com/imageworks/OpenShadingLanguage
+% https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 \documentclass[11pt,letterpaper]{book}
 \setlength{\oddsidemargin}{0.5in}
@@ -66,7 +66,7 @@ All rights reserved.
 Editor: Larry Gritz \\
 \emph{lg@imageworks.com}
 }
-\date{{\large Date: 1 Aug 2020 \\
+\date{{\large Date: 11 Aug 2020 \\
 % (with corrections, 21 Jul 2020)
 }
 \bigskip
@@ -3064,7 +3064,7 @@ Returns 1 if $x>0$, -1 if $x<0$, 0 if $x=0$.
 \emph{type} {\ce trunc} (\emph{type} x) }
 \indexapi{floor()} \indexapi{ceil()} \indexapi{round()} \indexapi{trunc()}

-Various rouinding methods: {\cf floor} returns the largest integer less
+Various rounding methods: {\cf floor} returns the largest integer less
 than or equal to $x$; {\cf ceil} returns the smallest integer greater than
 or equal to $x$; {\cf round} returns the closest integer to $x$, in
 either direction; and {\cf trunc} returns the integral part of $x$
@@ -3756,8 +3756,10 @@ The type of interpolation is specified by the \emph{basis} name,
 \qkw{bezier}, \qkw{bspline}, \qkw{hermite}, \qkw{linear}, or 
 \qkw{constant}. Some basis
 types require particular numbers of knot values -- Bezier splines
-require $4n+3$ values, Hermite splines require $4n+2$ values,
-Catmull-Rom and linear splines may use any number of values $n\ge 4$.
+require $3n+1$ values, Hermite splines require $2n+2$ values, and all of
+Catmull-Rom, linear, and constant requires $3+n$, where in all cases,
+$n \ge 1$ is the number of spline segments.
+
 To maintain consistency with the other spline types, \qkw{linear} splines will
 ignore the first and last data value; interpolating piecewise-linearly
 between $y_1$ and $y_{n-2}$, and \qkw{constant} splines ignore the first
@@ -8,7 +8,7 @@

 % Copyright Contributors to the Open Shading Language project.
 % SPDX-License-Identifier: BSD-3-Clause
-% https://github.com/imageworks/OpenShadingLanguage
+% https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 %
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 file (GLOB public_headers OSL/*.h)
 file (GLOB public_headers_imathx OSL/Imathx/*.h)
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 // Extensions to Imath classes for use in OSL's internals.
@@ -161,12 +161,12 @@ affineInverse(const Matrix44 &m)
 				ScalarT(1));

    auto r = m.x[0][0] * s.x[0][0] + m.x[0][1] * s.x[1][0] + m.x[0][2] * s.x[2][0];
-    auto abs_r = IMATH_INTERNAL_NAMESPACE::abs (r);
+    auto abs_r = std::abs (r);

    int may_have_divided_by_zero = 0;
    if (OSL_UNLIKELY(abs_r < ScalarT(1)))
    {
-    	auto mr = abs_r / Imath::limits<ScalarT>::smallest();
+        auto mr = abs_r / std::numeric_limits<ScalarT>::min();
 #if 0
        OSL_PRAGMA(unroll)
        for (int i = 0; i < 3; ++i)
@@ -174,7 +174,7 @@ affineInverse(const Matrix44 &m)
            OSL_PRAGMA(unroll)
            for (int j = 0; j < 3; ++j)
            {
-                if (mr <= IMATH_INTERNAL_NAMESPACE::abs (s.x[i][j]))
+                if (mr <= std::abs (s.x[i][j]))
                {
                    may_have_divided_by_zero = 1;
                }
@@ -184,15 +184,15 @@ affineInverse(const Matrix44 &m)
        // NOTE: using bitwise OR to avoid C++ semantics that cannot evaluate
        // the right hand side of logical OR unless left hand side is false
        if (
-            (mr <= IMATH_INTERNAL_NAMESPACE::abs (s.x[0][0])) |
-            (mr <= IMATH_INTERNAL_NAMESPACE::abs (s.x[0][1])) |
-            (mr <= IMATH_INTERNAL_NAMESPACE::abs (s.x[0][2])) |
-            (mr <= IMATH_INTERNAL_NAMESPACE::abs (s.x[1][0])) |
-            (mr <= IMATH_INTERNAL_NAMESPACE::abs (s.x[1][1])) |
-            (mr <= IMATH_INTERNAL_NAMESPACE::abs (s.x[1][2])) |
-            (mr <= IMATH_INTERNAL_NAMESPACE::abs (s.x[2][0])) |
-            (mr <= IMATH_INTERNAL_NAMESPACE::abs (s.x[2][1])) |
-            (mr <= IMATH_INTERNAL_NAMESPACE::abs (s.x[2][2]))
+            (mr <= std::abs (s.x[0][0])) |
+            (mr <= std::abs (s.x[0][1])) |
+            (mr <= std::abs (s.x[0][2])) |
+            (mr <= std::abs (s.x[1][0])) |
+            (mr <= std::abs (s.x[1][1])) |
+            (mr <= std::abs (s.x[1][2])) |
+            (mr <= std::abs (s.x[2][0])) |
+            (mr <= std::abs (s.x[2][1])) |
+            (mr <= std::abs (s.x[2][2]))
            ) {
            may_have_divided_by_zero = 1;
        }
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 // clang-format off

@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 // clang-format off

@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 #pragma once
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 // clang-format off

@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -74,7 +74,7 @@ enum class TargetISA
 /// tied to OSL internals at all.
 class OSLEXECPUBLIC LLVM_Util {
 public:
-    struct PerThreadInfo {
+    struct OSLEXECPUBLIC PerThreadInfo {
        PerThreadInfo() {}
        ~PerThreadInfo();
    private:
@@ -93,7 +93,7 @@ public:
    // controlled by the the existence of ScopedJitMemoryUser objects.
    // When the last ScopedJitMemoryUser goes out of scope or is deleted,
    // then the underlying memory managers will be deleted
-    struct ScopedJitMemoryUser {
+    struct OSLEXECPUBLIC ScopedJitMemoryUser {
        ScopedJitMemoryUser();
        ~ScopedJitMemoryUser();
    };
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 // Extend Imath matrix classes to include 2x2, as analogous as possible
@@ -15,6 +15,7 @@

 #pragma once

+#define OSL_MATRIX22_H

 #include <OSL/oslconfig.h>

@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -11,19 +11,33 @@


 // All the things we need from Imath.
-// We've replicated some Imath files in OSL/Imathx, adding the decorations
-// needed for them to be safe to compile with Cuda (and sometimes other
-// improvements). We will eventually push all of these fixes to OpenEXR.
-#include <OSL/Imathx/ImathLimits.h>
-#include <OSL/Imathx/ImathVec.h>
-#include <OSL/Imathx/ImathMatrix.h>
-#include <OSL/Imathx/ImathColor.h>
-#include <OSL/matrix22.h>
+#include <OpenEXR/OpenEXRConfig.h>
+#define OSL_OPENEXR_VERSION ((10000*OPENEXR_VERSION_MAJOR) + \
+                             (100*OPENEXR_VERSION_MINOR) + \
+                             OPENEXR_VERSION_PATCH)
+#if OSL_OPENEXR_VERSION >= 20599 /* 2.5.99: pre-3.0 */
+#   include <Imath/ImathVec.h>
+#   include <Imath/ImathMatrix.h>
+#   include <Imath/ImathColor.h>
+#   define OSL_USING_IMATH 3
+#else
+    // OpenEXR 2.x lacks the Cuda decorators we need, so we replicated some
+    // Imath files in OSL/Imathx, adding the decorations needed for them to
+    // be safe to compile with Cuda (and sometimes other improvements).
+#   include <OSL/Imathx/ImathLimits.h>
+#   include <OSL/Imathx/ImathVec.h>
+#   include <OSL/Imathx/ImathMatrix.h>
+#   include <OSL/Imathx/ImathColor.h>
+#   include <OSL/matrix22.h>
+#   define OSL_USING_IMATH 2
+#endif

-// Temporary bug fix: having trouble with cuda complaining about {fmt} lib.
-// Work around by disabling it from oiio headers.
+// The fmt library causes trouble for Cuda. Work around by disabling it from
+// oiio headers (OIIO <= 2.1) or telling fmt not to use the troublesome
+// int128 that Cuda doesn't understand (OIIO >= 2.2).
 #ifdef __CUDA_ARCH__
 #    define OIIO_USE_FMT 0
+#    define FMT_USE_INT128 0
 #endif

 // All the things we need from OpenImageIO
@@ -58,13 +72,17 @@ typedef float Float;
 /// matrices have the same data layout as Float[n][n]; and (c) your
 /// classes have most of the obvious constructors and overloaded
 /// operators one would expect from a C++ vector/matrix/color class.
-typedef Imath::Vec3<Float>     Vec3;
-typedef Imath::Matrix33<Float> Matrix33;
-typedef Imath::Matrix44<Float> Matrix44;
-typedef Imath::Color3<Float>   Color3;
-typedef Imath::Vec2<Float>     Vec2;
+using Vec2     = Imath::Vec2<Float>;
+using Vec3     = Imath::Vec3<Float>;
+using Color3   = Imath::Color3<Float>;
+using Matrix33 = Imath::Matrix33<Float>;
+using Matrix44 = Imath::Matrix44<Float>;

-typedef Imathx::Matrix22<Float> Matrix22;
+#if OSL_USING_IMATH >= 3
+using Matrix22 = Imath::Matrix22<Float>;
+#else
+using Matrix22 = Imathx::Matrix22<Float>;
+#endif


 /// Assume that we are dealing with OpenImageIO's texture system.  It
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -88,7 +88,7 @@ public:
    ///    int no_pointcloud      Skip pointcloud lookups. (0)
    ///    int exec_repeat        How many times to run each group (1).
    ///    int opt_warnings       Warn on certain failure to runtime-optimize
-    ///                              cetain shader constructs. (0)
+    ///                              certain shader constructs. (0)
    ///    int gpu_opt_error      Consider a hard error if certain shader
    ///                              constructs cannot be optimized away. (0)
    /// 2. Attributes that should be set by applications/renderers that
@@ -468,7 +468,7 @@ public:
    /// Replace a parameter value in a previously-declared shader group.
    /// This is meant to called after the ShaderGroupBegin/End, but will
    /// fail if the shader has already been irrevocably optimized/compiled,
-    /// unless the paraticular parameter is marked as lockgeom=0 (which
+    /// unless the particular parameter is marked as lockgeom=0 (which
    /// indicates that it's a parameter that may be overridden by the
    /// geometric primitive).  This call gives you a way of changing the
    /// instance value, even if it's not a geometric override.
@@ -667,20 +667,20 @@ public:
    /// to the optimizer, and will be determined strictly at execution time.
    void set_raytypes(ShaderGroup *group, int raytypes_on, int raytypes_off);

-    /// Ensure that the group has been optimized and JITed. The ctx pointer
+    /// Ensure that the group has been optimized and optionally JITed. The ctx pointer
    /// supplies a ShadingContext to use.
-    void optimize_group (ShaderGroup *group, ShadingContext *ctx);
+    void optimize_group (ShaderGroup *group, ShadingContext *ctx, bool do_jit = true);

-    /// Ensure that the group has been optimized and JITed. This is a
+    /// Ensure that the group has been optimized and optionally JITed. This is a
    /// convenience function that simply calls set_raytypes followed by
    /// optimize_group. The ctx supplies a ShadingContext to use.
    void optimize_group (ShaderGroup *group, int raytypes_on,
-                         int raytypes_off, ShadingContext *ctx);
+                         int raytypes_off, ShadingContext *ctx, bool do_jit = true);

    /// If option "greedyjit" was set, this call will trigger all
    /// shader groups that have not yet been compiled to do so with the
    /// specified number of threads (0 means use all available HW cores).
-    void optimize_all_groups (int nthreads=0);
+    void optimize_all_groups (int nthreads=0, bool do_jit = true);

    /// Return a pointer to the TextureSystem being used.
    TextureSystem * texturesys () const;
@@ -713,7 +713,7 @@ public:
    ///   float -> triple          replicate x3
    ///   float -> float[4]        replicate x4
    ///   float -> int             truncate like a (int) type cast
-    ///   triple -> triple         copy, regarless of differing vector types
+    ///   triple -> triple         copy, regardless of differing vector types
    /// 3. Additional rules not allowed in OSL source code:
    ///   float -> float[2]        replicate x2
    ///   int -> float[2]          convert to float and replicate x2
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 // clang-format off

@@ -62,7 +62,7 @@ template <typename S, typename T>  OSL_HOSTDEVICE Vec3  vnoise (S x, T y);

 // Cell noise on 1-4 dimensional domain, range [0,1].
 // cellnoise is constant within each unit cube (cell) on the domain, but
-// discontinuous at integer boundaries (and uncorrellated from cell to
+// discontinuous at integer boundaries (and uncorrelated from cell to
 // cell).
 template <typename S >             OSL_HOSTDEVICE float cellnoise (S x);
 template <typename S, typename T>  OSL_HOSTDEVICE float cellnoise (S x, T y);
@@ -71,7 +71,7 @@ template <typename S, typename T>  OSL_HOSTDEVICE Vec3  vcellnoise (S x, T y);

 // Hash noise on 1-4 dimensional domain, range [0,1].
 // hashnoise is like cellnoise, but without the 'floor' -- in other words,
-// it's an uncorrellated hash that is different for every floating point
+// it's an uncorrelated hash that is different for every floating point
 // value.
 template <typename S >             OSL_HOSTDEVICE float hashnoise (S x);
 template <typename S, typename T>  OSL_HOSTDEVICE float hashnoise (S x, T y);
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 /*
 The code in this file is based somewhat on code released by NVIDIA as
@@ -136,7 +136,7 @@ public:

    bool open(string_view shadername, string_view searchpath = string_view());
    ///< For an uninitialized `OSLQuery` object, initialize it with info on
-    /// the named shader with optional searcphath.  Return true for success,
+    /// the named shader with optional searchpath.  Return true for success,
    /// false if the shader could not be found or opened properly.

    bool open_bytecode(string_view buffer);
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 #ifndef OSLVERSION_H
@@ -30,7 +30,7 @@
 #define OSL_LIBRARY_VERSION_MINOR @PROJECT_VERSION_MINOR@
 #define OSL_LIBRARY_VERSION_PATCH @PROJECT_VERSION_PATCH@
 #define OSL_LIBRARY_VERSION_TWEAK @PROJECT_VERSION_TWEAK@
-#define OSL_LIBRARY_VERSION_RELEASE_TYPE @OPROJECT_VERSION_RELEASE_TYPE@
+#define OSL_LIBRARY_VERSION_RELEASE_TYPE @PROJECT_VERSION_RELEASE_TYPE@

 #define OSL_LIBRARY_VERSION_CODE (10000 * OSL_VERSION_MAJOR + \
                                    100 * OSL_VERSION_MINOR + \
@@ -44,7 +44,7 @@
                            OSL_LIBRARY_VERSION_MINOR, \
                            OSL_LIBRARY_VERSION_PATCH, \
                            OSL_LIBRARY_VERSION_RELEASE_TYPE)
-#define OSL_INTRO_STRING "OpenShadingLanguage " OSL_LIBRARY_VERSION_STRING
+#define OSL_INTRO_STRING "Open Shading Language " OSL_LIBRARY_VERSION_STRING
 #define OSL_COPYRIGHT_STRING "Copyright Contributors to the Open Shading Language project."


@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 /////////////////////////////////////////////////////////////////////////
 // \file
@@ -160,7 +160,7 @@

 // Generic pragma definition
 #if defined(_MSC_VER)
-    // Of couse MS does it in a quirky way
+    // Of course MS does it in a quirky way
    #define OSL_PRAGMA(UnQuotedPragma) __pragma(UnQuotedPragma)
 #else
    // All other compilers seem to support C99 _Pragma
@@ -271,7 +271,7 @@
 // calls should be inlined, and so on recursively.  Has no affect on function calls to
 // whose definition exists in different translation units or calls that are not
 // legal to inline (possibly by OSL_NOINLINE).  Intent is to ensure that entire
-// contents of a SIMD loop body is are fully inlined avoiding compiler hueristcs.
+// contents of a SIMD loop body is are fully inlined avoiding compiler heuristics.
 // However if any debugging code exists inside the code block, then the amount
 // of code inlined could explode.  So great care should be used when placing
 // code inside one of these forced inline blocks.  Note that if OSL_DEBUG is true,
@@ -454,7 +454,7 @@ using std::assume_aligned;

 // Until we have c++20, we can provide our own version of std::assume_aligned
 // http://open-std.org/JTC1/SC22/WG21/docs/papers/2018/p1007r0.pdf
-template<int AlignmentT, class DataT>
+template<int Alignment, class DataT>
 OSL_NODISCARD
 #ifndef __INTEL_COMPILER // constexpr not compatible with ICC's __assume_aligned
    constexpr
@@ -462,18 +462,18 @@ OSL_NODISCARD
 DataT* assume_aligned(DataT* ptr)
 {
 #ifdef __INTEL_COMPILER
-    __assume_aligned(ptr, AlignmentT);
+    __assume_aligned(ptr, Alignment);
    return ptr;
 #elif defined(__clang__) || defined(__GNUC__)
-    return reinterpret_cast<DataT*>(__builtin_assume_aligned(ptr, AlignmentT));
+    return reinterpret_cast<DataT*>(__builtin_assume_aligned(ptr, Alignment));
 #elif defined(_MSC_VER)
-    constexpr std::uintptr_t unaligned_bit_mask = ((1 << N) - 1);
+    constexpr std::uintptr_t unaligned_bit_mask = (Alignment - 1);
    if ((reinterpret_cast<std::uintptr_t>(ptr) & unaligned_bit_mask) == 0)
        return ptr;
    else
        __assume(0); // let compiler know we should never reach this branch
 #else
-    #error unknown compiler, update osl_assume_aligned to handle (or explicitly ignore) emitting a pointer alignment hint
+    #error unknown compiler, update assume_aligned to handle (or explicitly ignore) emitting a pointer alignment hint
    return ptr;
 #endif
 }
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 // clang-format off

@@ -129,7 +129,7 @@ public:
    /// the name of one of the coordinate systems).  A renderer is free
    /// to not implement this, in which case the default implementation
    /// is simply to make appropriate calls to get_matrix and
-    /// get_inverse_matrix.  The existance of this method is to allow
+    /// get_inverse_matrix.  The existence of this method is to allow
    /// some renderers to provide transformations that cannot be
    /// expressed by a 4x4 matrix.
    ///
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 // clang-format off

@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
 // Contributions Copyright (c) 2017 Intel Inc., et al.

 // clang-format off
@@ -8,13 +8,12 @@
 #pragma once

 #include <cmath>
+#include <limits>

 #include "dual.h"
 #include "dual_vec.h"
 #include <OSL/Imathx/Imathx.h>

-#include <OpenEXR/ImathFun.h>
-#include <OpenEXR/ImathMatrix.h>
 #include <OpenImageIO/fmath.h>


@@ -144,8 +143,23 @@ namespace sfm
 #endif
    }

+#if OSL_USING_IMATH >= 3
+    // Imath 3.0 has adequate optimized versions of these.

-    // because lengthTiny does alot of work including another
+    OSL_FORCEINLINE OSL_HOSTDEVICE
+    float length(const Vec3 &N)
+    {
+        return N.length();
+    }
+
+    OSL_FORCEINLINE OSL_HOSTDEVICE Vec3
+    normalize(const Vec3 &N)
+    {
+        return N.normalized();
+    }
+
+#else
+    // because lengthTiny does a lot of work including another
    // sqrt, we really want to skip that if possible because
    // with SIMD execution, we end up doing the sqrt twice
    // and blending the results.  Although code could be
@@ -187,7 +201,7 @@ namespace sfm
        absY /= max;
        absZ /= max;

-        return max * Imath::Math<float>::sqrt (absX * absX + absY * absY + absZ * absZ);
+        return max * std::sqrt(absX * absX + absY * absY + absZ * absZ);
    }

    OSL_FORCEINLINE OSL_HOSTDEVICE
@@ -195,10 +209,10 @@ namespace sfm
    {
        float length2 = N.dot (N);

-        if (OSL_UNLIKELY(length2 < float (2) * Imath::limits<float>::smallest()))
+        if (OSL_UNLIKELY(length2 < 2.0f * std::numeric_limits<float>::min()))
            return accessibleTinyLength(N);

-        return Imath::Math<float>::sqrt (length2);
+        return std::sqrt(length2);
    }

    OSL_FORCEINLINE OSL_HOSTDEVICE Vec3
@@ -211,7 +225,7 @@ namespace sfm

        return Vec3 (N.x / l, N.y / l, N.z / l);
    }
-
+#endif

    OSL_FORCEINLINE OSL_HOSTDEVICE Dual2<Vec3>
    normalize (const Dual2<Vec3> &a)
@@ -243,10 +257,13 @@ namespace sfm
        return (right > left)? right: left;
    }

-    class Matrix33 : public Imath::Matrix33<float>
+#if OSL_USING_IMATH >= 3
+    using Matrix33 = OSL::Matrix33;
+#else
+    class Matrix33 : public OSL::Matrix33
    {
    public:
-        typedef Imath::Matrix33<float> parent;
+        typedef OSL::Matrix33 parent;

        OSL_FORCEINLINE OSL_HOSTDEVICE Matrix33 (Imath::Uninitialized uninit)
        : parent(uninit)
@@ -264,14 +281,14 @@ namespace sfm
        : parent(a,b,c,d,e,f,g,h,i)
        {}

-        OSL_FORCEINLINE OSL_HOSTDEVICE Matrix33 (const Imath::Matrix33<float> &a)
+        OSL_FORCEINLINE OSL_HOSTDEVICE Matrix33 (const OSL::Matrix33 &a)
        : parent(a)
        {}

        // Avoid the memcpy that is part of the Imath::Matrix33
        OSL_FORCEINLINE OSL_HOSTDEVICE
        Matrix33 (const float a[3][3])
-        : Imath::Matrix33<float>(
+        : OSL::Matrix33(
            a[0][0], a[0][1], a[0][2],
            a[1][0], a[1][1], a[1][2],
            a[2][0], a[2][1], a[2][2])
@@ -339,7 +356,7 @@ namespace sfm
            return tmp;
        }
    };
-
+#endif

    OSL_FORCEINLINE OSL_HOSTDEVICE sfm::Matrix33
    make_matrix33_cols (const Vec3 &a, const Vec3 &b, const Vec3 &c)
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -98,7 +98,7 @@ struct ShaderGlobals {
    TransformationPtr object2common;
    TransformationPtr shader2common;

-    /// The output closure will be placed here. The rendererer should
+    /// The output closure will be placed here. The renderer should
    /// initialize this to NULL before shading execution, and this is where
    /// it can retrieve the output closure from after shader execution has
    /// completed.
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 // This file contains "declarations" for all the strings that might get used in
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage
 // Contributions Copyright (c) 2017 Intel Inc., et al.

 // clang-format off
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 #pragma once
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -764,15 +764,15 @@ protected:
    char m_symtype;                    ///< Kind of symbol (param, local, etc.)
    unsigned m_has_derivs : 1;         ///< Step to derivs (0 == has no derivs)
    unsigned m_const_initializer : 1;  ///< initializer is a constant expression
-    unsigned m_connected_down : 1;     ///< Connected to a later/downtream layer
-    unsigned m_initialized : 1;        ///< If a param, has it been initialized?
-    unsigned m_lockgeom : 1;           ///< Is the param not overridden by geom?
-    unsigned m_allowconnect : 1;       ///< Is the param not overridden by geom?
-    unsigned m_renderer_output : 1;    ///< Is this sym a renderer output?
-    unsigned m_readonly : 1;           ///< read-only symbol
-    char m_valuesource;                ///< Where did the value come from?
-    bool m_free_data;                  ///< Free m_data upon destruction?
-    short m_fieldid;                   ///< Struct field of this var (or -1)
+    unsigned m_connected_down : 1;   ///< Connected to a later/downstream layer
+    unsigned m_initialized : 1;      ///< If a param, has it been initialized?
+    unsigned m_lockgeom : 1;         ///< Is the param not overridden by geom?
+    unsigned m_allowconnect : 1;     ///< Is the param not overridden by geom?
+    unsigned m_renderer_output : 1;  ///< Is this sym a renderer output?
+    unsigned m_readonly : 1;         ///< read-only symbol
+    char m_valuesource;              ///< Where did the value come from?
+    bool m_free_data;                ///< Free m_data upon destruction?
+    short m_fieldid;                 ///< Struct field of this var (or -1)
    short m_layer;                ///< Layer (within the group) this belongs to
    int m_scope;                  ///< Scope where this symbol was declared
    int m_dataoffset;             ///< Offset of the data (-1 for unknown)
@@ -792,7 +792,7 @@ typedef std::vector<Symbol*> SymbolPtrVec;



-/// Intermediate Represenatation opcode
+/// Intermediate Representation opcode
 ///
 class Opcode {
 public:
@@ -1,6 +1,6 @@
 # Copyright Contributors to the Open Shading Language project.
 # SPDX-License-Identifier: BSD-3-Clause
-# https://github.com/imageworks/OpenShadingLanguage
+# https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 set (local_lib oslcomp)
 file (GLOB lib_src "*.cpp")
@@ -22,16 +22,31 @@ target_include_directories(${local_lib}
        ${CMAKE_INSTALL_FULL_INCLUDEDIR}
        ${OPENIMAGEIO_INCLUDES}
        ${ILMBASE_INCLUDES}
+        ${IMATH_INCLUDES}
    )
-target_compile_definitions (${local_lib} PRIVATE OSL_EXPORTS)
 target_link_libraries (${local_lib}
    PUBLIC
-        ${OPENIMAGEIO_LIBRARIES} ${ILMBASE_LIBRARIES}
+        OpenImageIO::OpenImageIO
+        # For OpenEXR/Imath 3.x:
+        $<$<TARGET_EXISTS:Imath::Imath>:Imath::Imath>
+        $<$<TARGET_EXISTS:Imath::Half>:Imath::Half>
+        # For OpenEXR >= 2.4/2.5 with reliable exported targets
+        $<$<TARGET_EXISTS:IlmBase::Imath>:IlmBase::Imath>
+        $<$<TARGET_EXISTS:IlmBase::Half>:IlmBase::Half>
+        $<$<TARGET_EXISTS:IlmBase::IlmThread>:IlmBase::IlmThread>
+        $<$<TARGET_EXISTS:IlmBase::Iex>:IlmBase::Iex>
+        # For OpenEXR <= 2.3:
+        ${ILMBASE_LIBRARIES}
    PRIVATE
        ${Boost_LIBRARIES} ${CMAKE_DL_LIBS}
        ${CLANG_LIBRARIES} ${LLVM_LIBRARIES} ${LLVM_LDFLAGS}
        ${LLVM_SYSTEM_LIBRARIES})

+# link with (system) library to prevent missing symbols inside clangDriver.lib
+if (MSVC)
+    target_link_libraries (${local_lib} PRIVATE "Version.lib")
+endif()
+
 set_target_properties (${local_lib}
    PROPERTIES
        VERSION     ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}
@@ -41,7 +56,7 @@ set_target_properties (${local_lib}
    )


-if (VISIBILITY_COMMAND)
+if (VISIBILITY_MAP_COMMAND)
    set_property (TARGET ${local_lib}
                  APPEND PROPERTY LINK_FLAGS ${VISIBILITY_MAP_COMMAND})
 endif ()
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #include <algorithm>
 #include <functional>
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #pragma once

@@ -176,7 +176,7 @@ public:
        return this;
    }

-    /// Detatch any 'next' nodes.
+    /// Detach any 'next' nodes.
    void detach_next() { m_next.reset(); }

    /// Concatenate ASTNode sequences A and B, returning a raw pointer to
@@ -320,7 +320,7 @@ protected:
    void typecheck_children(TypeSpec expected = TypeSpec());

    /// Helper for check_arglist: simple case of checking a single arg type
-    /// agaisnt the front of the formals list (which will be advanced).
+    /// against the front of the formals list (which will be advanced).
    bool check_simple_arg(const TypeSpec& argtype, const char*& formals,
                          bool coerce);

@@ -383,7 +383,7 @@ protected:
                                        bool is_constructor = false,
                                        Symbol* arrayindex  = nullptr);

-    // Codegen an array assignemnt: lval[index] = src
+    // Codegen an array assignment: lval[index] = src
    // If no index is provided the constant i is used.
    // Will return either src or a temporary that was codegened.
    Symbol* codegen_aassign(TypeSpec elemtype, Symbol* src, Symbol* lval,
@@ -422,7 +422,7 @@ private:



-class ASTshader_declaration : public ASTNode {
+class ASTshader_declaration final : public ASTNode {
 public:
    ASTshader_declaration(OSLCompilerImpl* comp, int stype, ustring name,
                          ASTNode* form, ASTNode* stmts, ASTNode* meta);
@@ -444,7 +444,7 @@ private:



-class ASTfunction_declaration : public ASTNode {
+class ASTfunction_declaration final : public ASTNode {
 public:
    ASTfunction_declaration(OSLCompilerImpl* comp, TypeSpec type, ustring name,
                            ASTNode* form, ASTNode* stmts, ASTNode* meta,
@@ -474,7 +474,7 @@ private:



-class ASTvariable_declaration : public ASTNode {
+class ASTvariable_declaration final : public ASTNode {
 public:
    ASTvariable_declaration(OSLCompilerImpl* comp, const TypeSpec& type,
                            ustring name, ASTNode* init, bool isparam,
@@ -531,7 +531,7 @@ private:



-class ASTvariable_ref : public ASTNode {
+class ASTvariable_ref final : public ASTNode {
 public:
    ASTvariable_ref(OSLCompilerImpl* comp, ustring name);
    const char* nodetypename() const { return "variable_ref"; }
@@ -550,7 +550,7 @@ private:



-class ASTpreincdec : public ASTNode {
+class ASTpreincdec final : public ASTNode {
 public:
    ASTpreincdec(OSLCompilerImpl* comp, int op, ASTNode* expr);
    const char* nodetypename() const
@@ -566,7 +566,7 @@ public:



-class ASTpostincdec : public ASTNode {
+class ASTpostincdec final : public ASTNode {
 public:
    ASTpostincdec(OSLCompilerImpl* comp, int op, ASTNode* expr);
    const char* nodetypename() const
@@ -582,7 +582,7 @@ public:



-class ASTindex : public ASTNode {
+class ASTindex final : public ASTNode {
 public:
    // ASTindex (OSLCompilerImpl *comp, ASTNode *expr, ASTNode *index);
    // ASTindex (OSLCompilerImpl *comp, ASTNode *expr, ASTNode *index, ASTNode *index2);
@@ -617,7 +617,7 @@ public:



-class ASTstructselect : public ASTNode {
+class ASTstructselect final : public ASTNode {
 public:
    ASTstructselect(OSLCompilerImpl* comp, ASTNode* expr, ustring field);
    const char* nodetypename() const { return "structselect"; }
@@ -653,7 +653,7 @@ private:



-class ASTconditional_statement : public ASTNode {
+class ASTconditional_statement final : public ASTNode {
 public:
    ASTconditional_statement(OSLCompilerImpl* comp, ASTNode* cond,
                             ASTNode* truestmt, ASTNode* falsestmt = NULL)
@@ -674,7 +674,7 @@ public:



-class ASTloop_statement : public ASTNode {
+class ASTloop_statement final : public ASTNode {
 public:
    enum LoopType { LoopWhile, LoopDo, LoopFor };

@@ -695,7 +695,7 @@ public:



-class ASTloopmod_statement : public ASTNode {
+class ASTloopmod_statement final : public ASTNode {
 public:
    enum LoopModType { LoopModBreak, LoopModContinue };

@@ -713,7 +713,7 @@ public:



-class ASTreturn_statement : public ASTNode {
+class ASTreturn_statement final : public ASTNode {
 public:
    ASTreturn_statement(OSLCompilerImpl* comp, ASTNode* expr)
        : ASTNode(return_statement_node, comp, 0, expr)
@@ -763,7 +763,8 @@ public:
 };


-class ASTcompound_initializer : public ASTtype_constructor {
+
+class ASTcompound_initializer final : public ASTtype_constructor {
    bool m_ctor;

    TypeSpec typecheck(TypeSpec expected, unsigned mode);
@@ -787,7 +788,7 @@ public:



-class ASTassign_expression : public ASTNode {
+class ASTassign_expression final : public ASTNode {
 public:
    ASTassign_expression(OSLCompilerImpl* comp, ASTNode* var, Operator op,
                         ASTNode* expr);
@@ -804,7 +805,7 @@ public:



-class ASTunary_expression : public ASTNode {
+class ASTunary_expression final : public ASTNode {
 public:
    ASTunary_expression(OSLCompilerImpl* comp, int op, ASTNode* expr);

@@ -823,7 +824,7 @@ private:



-class ASTbinary_expression : public ASTNode {
+class ASTbinary_expression final : public ASTNode {
 public:
    ASTbinary_expression(OSLCompilerImpl* comp, Operator op, ASTNode* left,
                         ASTNode* right);
@@ -847,7 +848,7 @@ private:



-class ASTternary_expression : public ASTNode {
+class ASTternary_expression final : public ASTNode {
 public:
    ASTternary_expression(OSLCompilerImpl* comp, ASTNode* cond,
                          ASTNode* trueexpr, ASTNode* falseexpr)
@@ -867,7 +868,7 @@ public:



-class ASTcomma_operator : public ASTNode {
+class ASTcomma_operator final : public ASTNode {
 public:
    ASTcomma_operator(OSLCompilerImpl* comp, ASTNode* exprlist)
        : ASTNode(comma_operator_node, comp, Nothing, exprlist)
@@ -884,7 +885,7 @@ public:



-class ASTtypecast_expression : public ASTNode {
+class ASTtypecast_expression final : public ASTNode {
 public:
    ASTtypecast_expression(OSLCompilerImpl* comp, TypeSpec typespec,
                           ASTNode* expr)
@@ -903,7 +904,7 @@ public:



-class ASTfunction_call : public ASTNode {
+class ASTfunction_call final : public ASTNode {
 public:
    ASTfunction_call(OSLCompilerImpl* comp, ustring name, ASTNode* args,
                     FunctionSymbol* funcsym = nullptr);
@@ -942,7 +943,7 @@ private:
    void typecheck_builtin_specialcase();

    /// Make sure the printf-like format string matches the list of
-    /// arguments poitned to by arg.  If ok, return true, otherwise
+    /// arguments pointed to by arg.  If ok, return true, otherwise
    /// return false and call an appropriate error().
    bool typecheck_printf_args(const char* format, ASTNode* arg);

@@ -1019,7 +1020,7 @@ private:



-class ASTliteral : public ASTNode {
+class ASTliteral final : public ASTNode {
 public:
    ASTliteral(OSLCompilerImpl* comp, int i)
        : ASTNode(literal_node, comp), m_i(i)
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage

 #include <iostream>
 #include <string>
@@ -154,7 +154,7 @@ OSLCompilerImpl::add_struct_fields(StructSpec* structspec, ustring basename,
                              arr ? NULL : init);
        } else {
            if (node && init && !arr) {
-                // Remember the pairing of this field and the iniial expr.
+                // Remember the pairing of this field and the initial expr.
                ((ASTvariable_declaration*)node)
                    ->register_struct_init(fieldname, init);
            }
@@ -911,7 +911,7 @@ ASTNode::codegen_initlist(ref init, TypeSpec type, Symbol* sym)
                ASTvariable_declaration* v = (ASTvariable_declaration*)this;
                std::string out;
                if (v->param_default_literals(fieldsym, init.get(), out))
-                    continue;  // Skip if we had a static initalizer
+                    continue;  // Skip if we had a static initializer
            }
            codegen_initlist(init, fieldsym->typespec(), fieldsym);
        }
@@ -1338,7 +1338,7 @@ ASTstructselect::codegen_assign(Symbol* dest, Symbol* src)



-// A struct select needs to decypher whether there is an array index
+// A struct select needs to decipher whether there is an array index
 // necessary in the chain of events.  The only kind of assignment that
 // makes sense is a series of struct field selections, array indexings,
 // or (last) a direct variable reference (for the top level struct).
@@ -1,6 +1,6 @@
 // Copyright Contributors to the Open Shading Language project.
 // SPDX-License-Identifier: BSD-3-Clause
-// https://github.com/imageworks/OpenShadingLanguage
+// https://github.com/AcademySoftwareFoundation/OpenShadingLanguage


 #include <cerrno>
--- a/Show More
+++ b/Show More