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