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44 lines
1.8 KiB
CMake
44 lines
1.8 KiB
CMake
# - Test CXX compiler for a flag
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# Check if the CXX compiler accepts a flag
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#
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# Macro CHECK_CXX_ACCEPTS_FLAG(FLAGS VARIABLE) -
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# checks if the function exists
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# FLAGS - the flags to try
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# VARIABLE - variable to store the result
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#
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#=============================================================================
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# Copyright 2002-2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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MACRO(CHECK_CXX_ACCEPTS_FLAG FLAGS VARIABLE)
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IF(NOT DEFINED ${VARIABLE})
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MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS}")
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TRY_COMPILE(${VARIABLE}
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${CMAKE_BINARY_DIR}
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${CMAKE_ROOT}/Modules/DummyCXXFile.cxx
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CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${FLAGS}
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OUTPUT_VARIABLE OUTPUT)
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IF(${VARIABLE})
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MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS} - yes")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining if the CXX compiler accepts the flag ${FLAGS} passed with "
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"the following output:\n${OUTPUT}\n\n")
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ELSE(${VARIABLE})
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MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS} - no")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if the CXX compiler accepts the flag ${FLAGS} failed with "
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"the following output:\n${OUTPUT}\n\n")
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ENDIF(${VARIABLE})
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ENDIF(NOT DEFINED ${VARIABLE})
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ENDMACRO(CHECK_CXX_ACCEPTS_FLAG)
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