107 строки
3.2 KiB
CMake
107 строки
3.2 KiB
CMake
#
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# Copyright (c) 2007-2009 High Performance Computing Center Stuttgart,
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# University of Stuttgart. All rights reserved.
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# $COPYRIGHT$
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#
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# Additional copyrights may follow
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#
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# $HEADER$
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#
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#
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# FLEX_FOUND - system has Flex
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# FLEX_EXECUTABLE - path of the flex executable
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# FLEX_VERSION - the version string, like "2.5.31"
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#
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MACRO(FIND_FLEX)
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IF(NOT FLEX_FOUND)
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MESSAGE(STATUS "Check for working flex...")
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# first find out if it's already installed somewhere
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FIND_PROGRAM(FLEX_EXECUTABLE_SYS NAMES flex)
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IF (WIN32)
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IF(FLEX_EXECUTABLE_SYS)
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SET(FLEX_EXECUTABLE ${FLEX_EXECUTABLE_SYS} CACHE FILEPATH "Flex")
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ELSE(FLEX_EXECUTABLE_SYS)
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IF(EXISTS ${CMAKE_SOURCE_DIR}/contrib/platform/win32/bin/flex.exe)
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# in case that no flex is installed, use our own version
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SET(FLEX_EXECUTABLE "${CMAKE_SOURCE_DIR}/contrib/platform/win32/bin/flex.exe" CACHE FILEPATH "Flex")
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ENDIF(EXISTS ${CMAKE_SOURCE_DIR}/contrib/platform/win32/bin/flex.exe)
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ENDIF(FLEX_EXECUTABLE_SYS)
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ELSE(WIN32)
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# nothing to do here at moment.
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ENDIF(WIN32)
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IF(FLEX_EXECUTABLE)
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SET(FLEX_FOUND TRUE CACHE INTERNAL "found flex")
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EXECUTE_PROCESS(COMMAND ${FLEX_EXECUTABLE} --version
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OUTPUT_VARIABLE _FLEX_VERSION
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)
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STRING (REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" FLEX_VERSION "${_FLEX_VERSION}")
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ENDIF(FLEX_EXECUTABLE)
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IF(FLEX_FOUND)
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IF(NOT Flex_FIND_QUIETLY)
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MESSAGE(STATUS "Check for working flex...done")
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ENDIF(NOT Flex_FIND_QUIETLY)
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ELSE(FLEX_FOUND)
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IF(Flex_FIND_REQUIRED)
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MESSAGE(STATUS "Check for working flex...failed")
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ENDIF(Flex_FIND_REQUIRED)
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ENDIF(FLEX_FOUND)
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ENDIF(NOT FLEX_FOUND)
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ENDMACRO(FIND_FLEX)
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#
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# Generate the corresponding C file from the lex file,
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# and add it in to the source list for the target.
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#
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MACRO(ADD_FLEX_FILE _sourcelist _source _prefix _output_dir)
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GET_FILENAME_COMPONENT(_in ${_source} ABSOLUTE)
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GET_FILENAME_COMPONENT(_basename ${_source} NAME_WE)
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STRING(LENGTH "${_prefix}" _prefix_length)
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IF(NOT _prefix_length EQUAL 0)
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SET(_out ${_output_dir}/${_basename}.c)
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SET(_args -P${_prefix})
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ELSE(NOT _prefix_length EQUAL 0)
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SET(_out ${_output_dir}/${_basename}.c)
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ENDIF(NOT _prefix_length EQUAL 0)
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#MESSAGE("${FLEX_EXECUTABLE} -o${_out} ${_args} ${_in}")
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IF(NOT DEFINED ${_basename}_DONE)
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MESSAGE(STATUS "parse ${_basename} with flex...")
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FILE(MAKE_DIRECTORY ${_output_dir})
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EXECUTE_PROCESS(
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COMMAND ${FLEX_EXECUTABLE} -o${_out} ${_args} ${_in}
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OUTPUT_VARIABLE OUTPUT
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RESULT_VARIABLE RESULT
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ERROR_VARIABLE ERROR
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)
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IF (NOT ${RESULT} STREQUAL "1")
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MESSAGE(STATUS "${ERROR}parse ${_basename} with flex...done")
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ELSE (NOT ${RESULT} STREQUAL "1")
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MESSAGE(FATAL_ERROR "${ERROR}parse ${_basename} with flex...failed")
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ENDIF (NOT ${RESULT} STREQUAL "1")
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SET(${_basename}_DONE TRUE CACHE INTERNAL "${_basename} flex parse done")
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ENDIF(NOT DEFINED ${_basename}_DONE)
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SET(${_sourcelist} ${${_sourcelist}} ${_out} )
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SET_SOURCE_FILES_PROPERTIES(${_out} PROPERTIES COMPILE_DEFINITIONS YY_NO_UNISTD_H)
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ENDMACRO(ADD_FLEX_FILE)
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