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53 lines
1.4 KiB
CMake
53 lines
1.4 KiB
CMake
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# - Try to find Bison
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# Once done this will define
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#
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# BISON_FOUND - system has Bison
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# BISON_EXECUTABLE - path of the bison executable
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# BISON_VERSION - the version string, like "2.5.31"
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#
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MACRO(FIND_BISON)
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FIND_PROGRAM(BISON_EXECUTABLE NAMES bison)
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IF(BISON_EXECUTABLE)
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SET(BISON_FOUND TRUE)
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EXECUTE_PROCESS(COMMAND ${BISON_EXECUTABLE} --version
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OUTPUT_VARIABLE _BISON_VERSION
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)
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string (REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" BISON_VERSION "${_bison_VERSION}")
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ENDIF(BISON_EXECUTABLE)
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IF(BISON_FOUND)
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IF(NOT Bison_FIND_QUIETLY)
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MESSAGE(STATUS "Found Bison: ${BISON_EXECUTABLE}")
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ENDIF(NOT Bison_FIND_QUIETLY)
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ELSE(BISON_FOUND)
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IF(Bison_FIND_REQUIRED)
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MESSAGE(FATAL_ERROR "Could not find Bison")
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ENDIF(Bison_FIND_REQUIRED)
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ENDIF(BISON_FOUND)
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ENDMACRO(FIND_BISON)
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MACRO(BISON_GENERATOR _PREFIX _Y_INPUT _H_OUTPUT _CPP_OUTPUT)
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IF(BISON_EXECUTABLE)
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GET_FILENAME_COMPONENT(_Y_DIR ${_Y_INPUT} PATH)
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ADD_CUSTOM_COMMAND(
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OUTPUT ${_CPP_OUTPUT}
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OUTPUT ${_H_OUTPUT}
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DEPENDS ${_Y_INPUT}
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COMMAND ${BISON_EXECUTABLE}
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ARGS
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-p ${_PREFIX} -o"${_CPP_OUTPUT}"
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--defines="${_H_OUTPUT}" ${_Y_INPUT}
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WORKING_DIRECTORY ${_Y_DIR}
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)
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SET_SOURCE_FILES_PROPERTIES(
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${_CPP_OUTPUT} ${_H_OUTPUT}
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GENERATED
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)
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ELSE(BISON_EXECUTABLE)
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MESSAGE(SEND_ERROR "Can't find bison program, and it's required")
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ENDIF(BISON_EXECUTABLE)
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ENDMACRO(BISON_GENERATOR)
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