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# Copyright (c) 2009, Whispersoft s.r.l. |
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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 are |
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# 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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# * Redistributions in binary form must reproduce the above |
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# copyright notice, this list of conditions and the following disclaimer |
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# in the documentation and/or other materials provided with the |
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# distribution. |
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# * Neither the name of Whispersoft s.r.l. nor the names of its |
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# contributors may be used to endorse or promote products derived from |
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# this software without specific prior written 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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# OWNER 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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# - Look for GNU flex, the lexer generator. |
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# 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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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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else(FLEX_EXECUTABLE) |
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message(FATAL_ERROR "=========> Could NOT find Flex executable") |
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endif(FLEX_EXECUTABLE) |
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