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author | Jörg Mayer <jmayer@loplof.de> | 2013-07-24 20:40:40 +0000 |
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committer | Jörg Mayer <jmayer@loplof.de> | 2013-07-24 20:40:40 +0000 |
commit | ae6007ab110dcad6c930c30c8024b6e417f90691 (patch) | |
tree | b3dab4b22023fc4c61068c02cd89a04e9b32c65e /cmake/modules/CheckCCompilerFlag.cmake | |
parent | c5ab45f6784f154dd7e94936edc3290bc6b1e377 (diff) |
Copy over from cmake git head as it fixes a bug:
The detection will not work if the locale is non-English
svn path=/trunk/; revision=50875
Diffstat (limited to 'cmake/modules/CheckCCompilerFlag.cmake')
-rw-r--r-- | cmake/modules/CheckCCompilerFlag.cmake | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/cmake/modules/CheckCCompilerFlag.cmake b/cmake/modules/CheckCCompilerFlag.cmake new file mode 100644 index 0000000000..02f7cb6e92 --- /dev/null +++ b/cmake/modules/CheckCCompilerFlag.cmake @@ -0,0 +1,57 @@ +# - Check whether the C compiler supports a given flag. +# CHECK_C_COMPILER_FLAG(<flag> <var>) +# <flag> - the compiler flag +# <var> - variable to store the result +# This internally calls the check_c_source_compiles macro. +# See help for CheckCSourceCompiles for a listing of variables +# that can modify the build. + +#============================================================================= +# Copyright 2006-2011 Kitware, Inc. +# Copyright 2006 Alexander Neundorf <neundorf@kde.org> +# Copyright 2011 Matthias Kretz <kretz@kde.org> +# +# Distributed under the OSI-approved BSD License (the "License"); +# see accompanying file Copyright.txt for details. +# +# This software is distributed WITHOUT ANY WARRANTY; without even the +# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +# See the License for more information. +#============================================================================= +# (To distribute this file outside of CMake, substitute the full +# License text for the above reference.) + +include(CheckCSourceCompiles) + +macro (CHECK_C_COMPILER_FLAG _FLAG _RESULT) + set(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}") + set(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}") + # Normalize locale during test compilation. + set(_CheckCCompilerFlag_LOCALE_VARS LC_ALL LC_MESSAGES LANG) + foreach(v ${_CheckCCompilerFlag_LOCALE_VARS}) + set(_CheckCCompilerFlag_SAVED_${v} "$ENV{${v}}") + set(ENV{${v}} C) + endforeach() + CHECK_C_SOURCE_COMPILES("int main(void) { return 0; }" ${_RESULT} + # Some compilers do not fail with a bad flag + FAIL_REGEX "command line option .* is valid for .* but not for C" # GNU + FAIL_REGEX "unrecognized .*option" # GNU + FAIL_REGEX "unknown .*option" # Clang + FAIL_REGEX "ignoring unknown option" # MSVC + FAIL_REGEX "warning D9002" # MSVC, any lang + FAIL_REGEX "option.*not supported" # Intel + FAIL_REGEX "invalid argument .*option" # Intel + FAIL_REGEX "ignoring option .*argument required" # Intel + 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 + ) + foreach(v ${_CheckCCompilerFlag_LOCALE_VARS}) + set(ENV{${v}} ${_CheckCCompilerFlag_SAVED_${v}}) + unset(_CheckCCompilerFlag_SAVED_${v}) + endforeach() + unset(_CheckCCompilerFlag_LOCALE_VARS) + + set (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}") +endmacro () |