diff options
Diffstat (limited to 'Modules/CheckCCompilerFlag.cmake')
| -rw-r--r-- | Modules/CheckCCompilerFlag.cmake | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Modules/CheckCCompilerFlag.cmake b/Modules/CheckCCompilerFlag.cmake new file mode 100644 index 000000000..90d04ac66 --- /dev/null +++ b/Modules/CheckCCompilerFlag.cmake @@ -0,0 +1,45 @@ +# - 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}") + CHECK_C_SOURCE_COMPILES("int main(void) { return 0; }" ${_RESULT} + # Some compilers do not fail with a bad flag + FAIL_REGEX "command line option .* is valid for .* but not for C" # GNU + FAIL_REGEX "unrecognized .*option" # GNU + FAIL_REGEX "unknown .*option" # Clang + FAIL_REGEX "ignoring unknown option" # MSVC + FAIL_REGEX "warning D9002" # MSVC, any lang + FAIL_REGEX "option.*not supported" # Intel + FAIL_REGEX "invalid argument .*option" # Intel + FAIL_REGEX "ignoring option .*argument required" # Intel + FAIL_REGEX "[Uu]nknown option" # HP + FAIL_REGEX "[Ww]arning: [Oo]ption" # SunPro + FAIL_REGEX "command option .* is not recognized" # XL + FAIL_REGEX "WARNING: unknown flag:" # Open64 + ) + SET (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}") +ENDMACRO (CHECK_C_COMPILER_FLAG) |