Avoid using upper case project name in doc install dir (#3299)

Closes #3296 

Co-authored-by: Mike Taves <mwtoews@gmail.com>

CMakeLists.txt

@@ -291,7 +291,20 @@ link_directories(${CMAKE_LIBRARY_OUTPUT_DIRECTORY})
 # Installation
 ################################################################################
 include(ProjInstallPath)
+
+# By default GNUInstallDirs will use the upper case project name
+# for CMAKE_INSTALL_DOCDIR, resulting in something like share/doc/PROJ
+# instead of share/doc/proj which historically have been the path used
+# by the project. 
+# Here force the use of a lower case project name and reset after
+# GNUInstallDirs has done its thing
+set(PROJECT_NAME_ORIGINAL "${PROJECT_NAME}")
+string(TOLOWER "${PROJECT_NAME}" PROJECT_NAME)
+
 include(GNUInstallDirs)
+
+set(PROJECT_NAME "${PROJECT_NAME_ORIGINAL}")
+
 set(PROJ_DATA_PATH "${CMAKE_INSTALL_FULL_DATADIR}/proj")
 
 ################################################################################

cmake/ProjConfig.cmake

@@ -13,7 +13,9 @@ include(CheckFunctionExists)
 # if C flags have -Werror, temporarily remove these while running some checks
 string(FIND "${CMAKE_C_FLAGS}" "-Werror" FIND_WERROR)
 if(FIND_WERROR GREATER_EQUAL 0)
-  string(REPLACE "-Werror" "" _tmp_CMAKE_C_FLAGS ${CMAKE_C_FLAGS})
+  # we must be careful about not matching -Werror=something, so let's append
+  # a space at the end of CMAKE_C_FLAGS and match -Werror with a trailing space
+  string(REPLACE "-Werror " " " _tmp_CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ")
   set(_prev_CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
   set(CMAKE_C_FLAGS "${_tmp_CMAKE_C_FLAGS}")
 endif()

src/proj_json_streaming_writer.cpp

@@ -28,6 +28,7 @@
 
 /*! @cond Doxygen_Suppress */
 
+#include <limits>
 #include <vector>
 #include <string>
 
@@ -277,6 +278,14 @@ void CPLJSonStreamingWriter::Add(double dfVal, int nPrecision)
     {
         Print( dfVal > 0 ? "\"Infinity\"" : "\"-Infinity\"" );
     }
+    else if( dfVal >= std::numeric_limits<int>::min() &&
+             dfVal <= std::numeric_limits<int>::max() &&
+             static_cast<int>(dfVal) == dfVal )
+    {
+        // Avoid rounding issues on some platforms like armel, with numbers
+        // like 2005. See https://github.com/OSGeo/PROJ/issues/3297
+        Print(CPLSPrintf("%d", static_cast<int>(dfVal)));
+    }
     else
     {
         char szFormatting[10];