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# Copyright (C) 2013 Daniel Scharrer
#
# This software is provided 'as-is', without any express or implied
# warranty. In no event will the author(s) be held liable for any damages
# arising from the use of this software.
#
# Permission is granted to anyone to use this software for any purpose,
# including commercial applications, and to alter it and redistribute it
# freely, subject to the following restrictions:
#
# 1. The origin of this software must not be misrepresented; you must not
# claim that you wrote the original software. If you use this software
# in a product, an acknowledgment in the product documentation would be
# appreciated but is not required.
# 2. Altered source versions must be plainly marked as such, and must not be
# misrepresented as being the original software.
# 3. This notice may not be removed or altered from any source distribution.
include(CheckCXXSourceCompiles)
include(CompileCheck)
set(_HAS_CXX11 0)
function(enable_cxx11)
if(MSVC)
set(_HAS_CXX11 1 PARENT_SCOPE)
else()
add_cxxflag("-std=c++11")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" PARENT_SCOPE)
if(FLAG_FOUND OR NOT CMAKE_COMPILER_IS_GNUCXX)
set(_HAS_CXX11 1 PARENT_SCOPE)
endif()
endif()
endfunction(enable_cxx11)
function(check_cxx11 CHECK RESULTVAR)
if(${_HAS_CXX11})
string(REGEX REPLACE "[^a-zA-Z0-9_][^a-zA-Z0-9_]*" "-" check "${CHECK}")
set(file "${CMAKE_MODULE_PATH}/check-cxx11-${check}.cpp")
check_compile(result "${file}" "${CHECK}" "C++11 feature")
if("${result}" STREQUAL "")
set(${RESULTVAR} OFF PARENT_SCOPE)
else()
set(${RESULTVAR} ON PARENT_SCOPE)
endif()
else()
set(${RESULTVAR} OFF PARENT_SCOPE)
endif()
endfunction()
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