121 lines
4.9 KiB
CMake
121 lines
4.9 KiB
CMake
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#=============================================================================
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# Copyright 2009 Kitware, Inc.
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# Copyright 2006 Tristan Carel
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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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# * Neither the names of Kitware, Inc., the Insight Software Consortium,
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# nor the names of their contributors may 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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# ------------------------------------------------------------------------------
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#
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# The above copyright and license notice applies to distributions of
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# CMake in source and binary form. Some source files contain additional
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# notices of original copyright by their contributors; see each source
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# for details. Third-party software packages supplied with CMake under
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# compatible licenses provide their own copyright notices documented in
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# corresponding subdirectories.
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#=============================================================================
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FIND_PROGRAM(FLEX_EXECUTABLE flex DOC "path to the flex executable")
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MARK_AS_ADVANCED(FLEX_EXECUTABLE)
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FIND_LIBRARY(FL_LIBRARY NAMES fl
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DOC "Path to the fl library")
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FIND_PATH(FLEX_INCLUDE_DIR FlexLexer.h
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DOC "Path to the flex headers")
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MARK_AS_ADVANCED(FL_LIBRARY FLEX_INCLUDE_DIR)
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SET(FLEX_INCLUDE_DIRS ${FLEX_INCLUDE_DIR})
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SET(FLEX_LIBRARIES ${FL_LIBRARY})
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IF(FLEX_EXECUTABLE)
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EXECUTE_PROCESS(COMMAND ${FLEX_EXECUTABLE} --version
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OUTPUT_VARIABLE FLEX_version_output
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ERROR_VARIABLE FLEX_version_error
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RESULT_VARIABLE FLEX_version_result
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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IF(NOT ${FLEX_version_result} EQUAL 0)
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IF(FLEX_FIND_REQUIRED)
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MESSAGE(SEND_ERROR "Command \"${FLEX_EXECUTABLE} --version\" failed with output:\n${FLEX_version_output}\n${FLEX_version_error}")
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ELSE()
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MESSAGE("Command \"${FLEX_EXECUTABLE} --version\" failed with output:\n${FLEX_version_output}\n${FLEX_version_error}\nFLEX_VERSION will not be available")
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ENDIF()
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ELSE()
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STRING(REGEX REPLACE "^flex (.*)$" "\\1"
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FLEX_VERSION "${FLEX_version_output}")
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ENDIF()
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#============================================================
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# FLEX_TARGET (public macro)
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#============================================================
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#
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MACRO(FLEX_TARGET Name Input Output)
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SET(FLEX_TARGET_usage "FLEX_TARGET(<Name> <Input> <Output> [COMPILE_FLAGS <string>]")
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IF(${ARGC} GREATER 3)
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IF(${ARGC} EQUAL 5)
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IF("${ARGV3}" STREQUAL "COMPILE_FLAGS")
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SET(FLEX_EXECUTABLE_opts "${ARGV4}")
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SEPARATE_ARGUMENTS(FLEX_EXECUTABLE_opts)
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ELSE()
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MESSAGE(SEND_ERROR ${FLEX_TARGET_usage})
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ENDIF()
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ELSE()
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MESSAGE(SEND_ERROR ${FLEX_TARGET_usage})
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ENDIF()
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ENDIF()
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STRING(REGEX REPLACE "^(.*)(\\.[^.]*)$" "\\2" _fileext "${Output}")
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STRING(REPLACE "c" "h" _fileext ${_fileext})
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STRING(REGEX REPLACE "^(.*)(\\.[^.]*)$" "\\1${_fileext}"
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OutputHeader "${Output}")
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ADD_CUSTOM_COMMAND(OUTPUT ${Output} ${OutputHeader}
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COMMAND ${FLEX_EXECUTABLE}
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ARGS ${FLEX_EXECUTABLE_opts} -o${Output} --header-file=${OutputHeader} ${Input}
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DEPENDS ${Input}
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COMMENT "[FLEX][${Name}] Building scanner with flex ${FLEX_VERSION}"
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
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SET(FLEX_${Name}_DEFINED TRUE)
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SET(FLEX_${Name}_OUTPUTS ${Output} ${OutputHeader})
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SET(FLEX_${Name}_OUTPUT_HEADER ${OutputHeader})
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SET(FLEX_${Name}_INPUT ${Input})
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SET(FLEX_${Name}_COMPILE_FLAGS ${FLEX_EXECUTABLE_opts})
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ENDMACRO(FLEX_TARGET)
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#============================================================
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ENDIF(FLEX_EXECUTABLE)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(FLEX REQUIRED_VARS FLEX_EXECUTABLE
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VERSION_VAR FLEX_VERSION)
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# FindFLEX.cmake ends here
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