63 lines
2.9 KiB
CMake
63 lines
2.9 KiB
CMake
# - 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 and
|
|
# sets CMAKE_REQUIRED_DEFINITIONS to <flag>.
|
|
# See help for CheckCXXSourceCompiles for a listing of variables
|
|
# that can otherwise modify the build.
|
|
|
|
#=============================================================================
|
|
# Copyright 2006-2010 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(CheckCXXSourceCompiles)
|
|
|
|
macro (CHECK_CXX_COMPILER_FLAG _FLAG _RESULT)
|
|
set(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}")
|
|
set(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}")
|
|
|
|
# Normalize locale during test compilation.
|
|
set(_CheckCXXCompilerFlag_LOCALE_VARS LC_ALL LC_MESSAGES LANG)
|
|
foreach(v ${_CheckCXXCompilerFlag_LOCALE_VARS})
|
|
set(_CheckCXXCompilerFlag_SAVED_${v} "$ENV{${v}}")
|
|
set(ENV{${v}} C)
|
|
endforeach()
|
|
CHECK_CXX_SOURCE_COMPILES("int main() { 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 "not supported in this configuration; ignored" # AIX
|
|
FAIL_REGEX "File with unknown suffix passed to linker" # PGI
|
|
FAIL_REGEX "WARNING: unknown flag:" # Open64
|
|
)
|
|
foreach(v ${_CheckCXXCompilerFlag_LOCALE_VARS})
|
|
set(ENV{${v}} ${_CheckCXXCompilerFlag_SAVED_${v}})
|
|
unset(_CheckCXXCompilerFlag_SAVED_${v})
|
|
endforeach()
|
|
unset(_CheckCXXCompilerFlag_LOCALE_VARS)
|
|
|
|
set (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}")
|
|
endmacro ()
|
|
|