166 lines
7.0 KiB
CMake
166 lines
7.0 KiB
CMake
# - Find yacc executable and provides macros to generate custom build rules
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# The module defines the following variables
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#
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# YACC_EXECUTABLE - path to the yacc program
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# YACC_FOUND - true if the program was found
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#
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# If yacc is found, the module defines the macros:
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# YACC_TARGET(<Name> <YaccInput> <CodeOutput> [VERBOSE <file>]
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# [COMPILE_FLAGS <string>])
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# which will create a custom rule to generate a parser. <YaccInput> is
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# the path to a yacc file. <CodeOutput> is the name of the source file
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# generated by yacc. A header file is also be generated, and contains
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# the token list. If COMPILE_FLAGS option is specified, the next
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# parameter is added in the yacc command line. if VERBOSE option is
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# specified, <file> is created and contains verbose descriptions of the
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# grammar and parser. The macro defines a set of variables:
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# YACC_${Name}_DEFINED - true is the macro ran successfully
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# YACC_${Name}_INPUT - The input source file, an alias for <YaccInput>
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# YACC_${Name}_OUTPUT_SOURCE - The source file generated by yacc
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# YACC_${Name}_OUTPUT_HEADER - The header file generated by yacc
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# YACC_${Name}_OUTPUTS - The sources files generated by yacc
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# YACC_${Name}_COMPILE_FLAGS - Options used in the yacc command line
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#
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# ====================================================================
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# Example:
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#
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# find_package(YACC)
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# YACC_TARGET(MyParser parser.y ${CMAKE_CURRENT_BINARY_DIR}/parser.cpp)
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# add_executable(Foo main.cpp ${YACC_MyParser_OUTPUTS})
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# ====================================================================
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#
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#=============================================================================
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# Copyright 2010 United States Government as represented by
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# the U.S. Army Research Laboratory.
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# Copyright 2009 Kitware, Inc.
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# Copyright 2006 Tristan Carel
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# * The names of the authors may not be used to endorse or promote
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# products derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#=============================================================================
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FIND_PROGRAM(YACC_EXECUTABLE bison DOC "path to the yacc executable")
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IF(NOT YACC_EXECUTABLE)
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FIND_PROGRAM(YACC_EXECUTABLE yacc DOC "path to the yacc executable")
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ENDIF(NOT YACC_EXECUTABLE)
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MARK_AS_ADVANCED(YACC_EXECUTABLE)
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IF(YACC_EXECUTABLE)
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# internal macro
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MACRO(YACC_TARGET_option_verbose Name YaccOutput filename)
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LIST(APPEND YACC_TARGET_cmdopt "--verbose")
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GET_FILENAME_COMPONENT(YACC_TARGET_output_path "${YaccOutput}" PATH)
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GET_FILENAME_COMPONENT(YACC_TARGET_output_name "${YaccOutput}" NAME_WE)
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ADD_CUSTOM_COMMAND(OUTPUT ${filename}
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COMMAND ${CMAKE_COMMAND}
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ARGS -E copy
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"${YACC_TARGET_output_path}/${YACC_TARGET_output_name}.output"
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"${filename}"
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DEPENDS
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"${YACC_TARGET_output_path}/${YACC_TARGET_output_name}.output"
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COMMENT "[YACC][${Name}] Copying yacc verbose table to ${filename}"
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WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
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SET(YACC_${Name}_VERBOSE_FILE ${filename})
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LIST(APPEND YACC_TARGET_extraoutputs
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"${YACC_TARGET_output_path}/${YACC_TARGET_output_name}.output")
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ENDMACRO(YACC_TARGET_option_verbose)
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# internal macro
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MACRO(YACC_TARGET_option_extraopts Options)
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SET(YACC_TARGET_extraopts "${Options}")
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SEPARATE_ARGUMENTS(YACC_TARGET_extraopts)
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LIST(APPEND YACC_TARGET_cmdopt ${YACC_TARGET_extraopts})
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ENDMACRO(YACC_TARGET_option_extraopts)
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#============================================================
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# YACC_TARGET (public macro)
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#============================================================
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#
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MACRO(YACC_TARGET Name YaccInput YaccOutput)
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SET(YACC_TARGET_output_header "")
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SET(YACC_TARGET_command_opt "")
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SET(YACC_TARGET_outputs "${YaccOutput}")
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IF(NOT ${ARGC} EQUAL 3 AND NOT ${ARGC} EQUAL 5 AND NOT ${ARGC} EQUAL 7)
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MESSAGE(SEND_ERROR "Usage")
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ELSE()
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# Parsing parameters
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IF(${ARGC} GREATER 5 OR ${ARGC} EQUAL 5)
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IF("${ARGV3}" STREQUAL "VERBOSE")
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YACC_TARGET_option_verbose(${Name} ${YaccOutput} "${ARGV4}")
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ENDIF()
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IF("${ARGV3}" STREQUAL "COMPILE_FLAGS")
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YACC_TARGET_option_extraopts("${ARGV4}")
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ENDIF()
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ENDIF()
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IF(${ARGC} EQUAL 7)
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IF("${ARGV5}" STREQUAL "VERBOSE")
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YACC_TARGET_option_verbose(${Name} ${YaccOutput} "${ARGV6}")
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ENDIF()
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IF("${ARGV5}" STREQUAL "COMPILE_FLAGS")
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YACC_TARGET_option_extraopts("${ARGV6}")
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ENDIF()
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ENDIF()
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# Header's name generated by yacc (see option -d)
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LIST(APPEND YACC_TARGET_cmdopt "-d")
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STRING(REGEX REPLACE "^(.*)(\\.[^.]*)$" "\\2" _fileext "${ARGV2}")
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STRING(REPLACE "c" "h" _fileext ${_fileext})
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STRING(REGEX REPLACE "^(.*)(\\.[^.]*)$" "\\1${_fileext}"
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YACC_${Name}_OUTPUT_HEADER "${ARGV2}")
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LIST(APPEND YACC_TARGET_outputs "${YACC_${Name}_OUTPUT_HEADER}")
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ADD_CUSTOM_COMMAND(OUTPUT ${YACC_TARGET_outputs}
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${YACC_TARGET_extraoutputs}
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COMMAND ${YACC_EXECUTABLE}
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ARGS ${YACC_TARGET_cmdopt} -o ${ARGV2} ${ARGV1}
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DEPENDS ${ARGV1}
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COMMENT "[YACC][${Name}] Building parser with ${YACC_EXECUTABLE}"
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
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# define target variables
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SET(YACC_${Name}_DEFINED TRUE)
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SET(YACC_${Name}_INPUT ${ARGV1})
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SET(YACC_${Name}_OUTPUTS ${YACC_TARGET_outputs})
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SET(YACC_${Name}_COMPILE_FLAGS ${YACC_TARGET_cmdopt})
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SET(YACC_${Name}_OUTPUT_SOURCE "${YaccOutput}")
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ENDIF(NOT ${ARGC} EQUAL 3 AND NOT ${ARGC} EQUAL 5 AND NOT ${ARGC} EQUAL 7)
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ENDMACRO(YACC_TARGET)
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#
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#============================================================
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ENDIF(YACC_EXECUTABLE)
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INCLUDE(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(YACC DEFAULT_MSG YACC_EXECUTABLE)
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# FindYACC.cmake ends here
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