[u/mrichter/AliRoot.git] / Vc / cmake / CheckCXXCompilerFlag.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.  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 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 distributed 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}")
   CHECK_CXX_SOURCE_COMPILES("int main() { return 0;}" ${_RESULT}
     # Some compilers do not fail with a bad flag
     FAIL_REGEX "argument unused during compilation"        # clang
     FAIL_REGEX "is valid for .* but not for C\\\\+\\\\+"   # GNU
     FAIL_REGEX "unrecognized .*option"                     # GNU
     FAIL_REGEX "ignoring unknown option"                   # MSVC
     FAIL_REGEX "[Uu]nknown option"                         # HP
     FAIL_REGEX "[Ww]arning: [Oo]ption"                     # SunPro
     FAIL_REGEX "command option .* is not recognized"       # XL
     FAIL_REGEX "WARNING: unknown flag:"                    # Open64
     FAIL_REGEX " #10159: "                                 # ICC
     )
   SET (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}")
ENDMACRO (CHECK_CXX_COMPILER_FLAG)
Commit	Line	Data
f22341db	1	# - Check whether the CXX compiler supports a given flag.
	2	# CHECK_CXX_COMPILER_FLAG(<flag> <var>)
	3	# <flag> - the compiler flag
	4	# <var> - variable to store the result
	5	# This internally calls the check_cxx_source_compiles macro. See help
	6	# for CheckCXXSourceCompiles for a listing of variables that can
	7	# modify the build.
	8
	9	#=============================================================================
	10	# Copyright 2006-2009 Kitware, Inc.
	11	# Copyright 2006 Alexander Neundorf <neundorf@kde.org>
	12	# Copyright 2011 Matthias Kretz <kretz@kde.org>
	13	#
	14	# Distributed under the OSI-approved BSD License (the "License");
	15	# see accompanying file Copyright.txt for details.
	16	#
	17	# This software is distributed WITHOUT ANY WARRANTY; without even the
	18	# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	19	# See the License for more information.
	20	#=============================================================================
	21	# (To distributed this file outside of CMake, substitute the full
	22	# License text for the above reference.)
	23
	24	INCLUDE(CheckCXXSourceCompiles)
	25
	26	MACRO (CHECK_CXX_COMPILER_FLAG _FLAG _RESULT)
	27	SET(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}")
	28	SET(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}")
	29	CHECK_CXX_SOURCE_COMPILES("int main() { return 0;}" ${_RESULT}
	30	# Some compilers do not fail with a bad flag
	31	FAIL_REGEX "argument unused during compilation" # clang
	32	FAIL_REGEX "is valid for .* but not for C\\\\+\\\\+" # GNU
	33	FAIL_REGEX "unrecognized .*option" # GNU
	34	FAIL_REGEX "ignoring unknown option" # MSVC
	35	FAIL_REGEX "[Uu]nknown option" # HP
	36	FAIL_REGEX "[Ww]arning: [Oo]ption" # SunPro
	37	FAIL_REGEX "command option .* is not recognized" # XL
	38	FAIL_REGEX "WARNING: unknown flag:" # Open64
	39	FAIL_REGEX " #10159: " # ICC
	40	)
	41	SET (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}")
	42	ENDMACRO (CHECK_CXX_COMPILER_FLAG)
	43