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| # - Look for GNU flex, the lexer generator.
| | {{CMake/Template/Moved}} |
| # Defines the following:
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| # FLEX_EXECUTABLE - path to the flex executable
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| # FLEX_FILE - parse a file with flex
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| # FLEX_PREFIX_OUTPUTS - Set to true to make FLEX_FILE produce outputs of
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| # lex.${filename}.c, not lex.yy.c . Passes -P to flex.
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|
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| MESSAGE(STATUS "In flex")
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|
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| IF(NOT DEFINED FLEX_PREFIX_OUTPUTS)
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| SET(FLEX_PREFIX_OUTPUTS FALSE)
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| ENDIF(NOT DEFINED FLEX_PREFIX_OUTPUTS)
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|
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| IF(NOT FLEX_EXECUTABLE)
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| MESSAGE(STATUS "Looking for flex")
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| FIND_PROGRAM(FLEX_EXECUTABLE flex)
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| IF(FLEX_EXECUTABLE)
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| MESSAGE(STATUS "Looking for flex -- ${FLEX_EXECUTABLE}")
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| ENDIF(FLEX_EXECUTABLE)
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| ENDIF(NOT FLEX_EXECUTABLE)
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|
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| IF(FLEX_EXECUTABLE)
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| MACRO(FLEX_FILE FILENAME)
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| GET_FILENAME_COMPONENT(PATH "${FILENAME}" PATH)
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| IF("${PATH}" STREQUAL "")
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| SET(PATH_OPT "")
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| ELSE("${PATH}" STREQUAL "")
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| SET(PATH_OPT "/${PATH}")
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| ENDIF("${PATH}" STREQUAL "")
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| IF(NOT EXISTS "${CMAKE_CURRENT_BINARY_DIR}${PATH_OPT}")
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| FILE(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}${PATH_OPT}")
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| ENDIF(NOT EXISTS "${CMAKE_CURRENT_BINARY_DIR}${PATH_OPT}")
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| IF(FLEX_PREFIX_OUTPUTS)
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| GET_FILENAME_COMPONENT(PREFIX "${FILENAME}" NAME_WE)
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| ELSE(FLEX_PREFIX_OUTPUTS)
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| SET(PREFIX "yy")
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| ENDIF(FLEX_PREFIX_OUTPUTS)
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| SET(OUTFILE "${CMAKE_CURRENT_BINARY_DIR}${PATH_OPT}/lex.${PREFIX}.c")
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| ADD_CUSTOM_COMMAND(
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| OUTPUT "${OUTFILE}"
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| COMMAND "${FLEX_EXECUTABLE}"
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| ARGS "--prefix=${PREFIX}"
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| "--outfile=${OUTFILE}"
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| "${CMAKE_CURRENT_SOURCE_DIR}/${FILENAME}"
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| DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/${FILENAME}")
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| SET_SOURCE_FILES_PROPERTIES("${OUTFILE}" PROPERTIES GENERATED TRUE)
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| ENDMACRO(FLEX_FILE)
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| ENDIF(FLEX_EXECUTABLE)
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| {{CMake/Template/Footer}}
| | This page has moved [https://gitlab.kitware.com/cmake/community/wikis/contrib/modules/UseFlex here]. |
| [[Category:CMakeMacro]]
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