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74 lines
3.7 KiB
CMake
74 lines
3.7 KiB
CMake
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# - Check whether the C compiler supports a given flag.
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# CHECK_C_COMPILER_FLAG(<flag> <var>)
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# <flag> - the compiler flag
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# <var> - variable to store the result
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# This internally calls the check_c_source_compiles macro.
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# See help for CheckCSourceCompiles for a listing of variables
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# that can modify the build.
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#=============================================================================
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# Copyright 2006-2009 Kitware, Inc.
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# Copyright 2006 Alexander Neundorf <neundorf@kde.org>
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# Copyright 2011-2013 Matthias Kretz <kretz@kde.org>
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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 notice,
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# 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 notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# * The names of Kitware, Inc., the Insight Consortium, or the names of
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# any consortium members, or of any contributors, may not be used to
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# endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS IS''
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
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# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (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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INCLUDE(CheckCSourceCompiles)
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MACRO (CHECK_C_COMPILER_FLAG _FLAG _RESULT)
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SET(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}")
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SET(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}")
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if(${ARGC} GREATER 2)
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SET(TEST_SOURCE "${ARGV2}")
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else()
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SET(TEST_SOURCE "int main() { return 0;}")
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endif()
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CHECK_C_SOURCE_COMPILES("${TEST_SOURCE}" ${_RESULT}
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# Some compilers do not fail with a bad flag
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FAIL_REGEX "error: bad value (.*) for .* switch" # GNU
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FAIL_REGEX "argument unused during compilation" # clang
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FAIL_REGEX "is valid for .* but not for C" # GNU
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FAIL_REGEX "unrecognized .*option" # GNU
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FAIL_REGEX "ignored for target" # GNU
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FAIL_REGEX "ignoring unknown option" # MSVC
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FAIL_REGEX "warning D9002" # MSVC
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FAIL_REGEX "[Uu]nknown option" # HP
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FAIL_REGEX "[Ww]arning: [Oo]ption" # SunPro
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FAIL_REGEX "command option .* is not recognized" # XL
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FAIL_REGEX "WARNING: unknown flag:" # Open64
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FAIL_REGEX "command line error" # ICC
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FAIL_REGEX "command line warning" # ICC
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FAIL_REGEX "#10236:" # ICC: File not found
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FAIL_REGEX " #10159: " # ICC
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FAIL_REGEX " #10353: " # ICC: option '-mfma' ignored, suggest using '-march=core-avx2'
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)
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SET (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}")
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ENDMACRO (CHECK_C_COMPILER_FLAG)
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