poco/cmake/CXX1x.cmake
Günter Obiltschnig 26fe80e995 #1991
2017-12-18 10:33:11 +01:00

82 lines
4.1 KiB
CMake

# Copyright (c) 2013 Nathan Osman
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# Determines whether the compiler supports C++11
macro(check_for_cxx11_compiler _VAR)
message(STATUS "Checking for C++11 compiler")
set(${_VAR})
try_compile(_COMPILER_TEST_RESULT ${PROJECT_BINARY_DIR} ${PROJECT_SOURCE_DIR}/cmake/test_compiler.cpp CMAKE_FLAGS -DCMAKE_CXX_STANDARD=11 -DCMAKE_CXX_STANDARD_REQUIRED=ON)
if(NOT _COMPILER_TEST_RESULT AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
try_compile(_COMPILER_TEST_RESULT ${PROJECT_BINARY_DIR} ${PROJECT_SOURCE_DIR}/cmake/test_compiler.cpp CMAKE_FLAGS -DCMAKE_CXX_FLAGS="-stdlib=libc++" -DCMAKE_CXX_STANDARD=11 -DCMAKE_CXX_STANDARD_REQUIRED=ON)
if(_COMPILER_TEST_RESULT)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
else()
message(STATUS "To enable C++11 install libc++ standard library from https://libcxx.llvm.org/")
endif()
endif()
if(_COMPILER_TEST_RESULT AND ((MSVC AND (MSVC10 OR MSVC11 OR MSVC12 OR MSVC14)) OR
(CMAKE_COMPILER_IS_GNUCXX AND NOT ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 4.8.1) OR
(CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND NOT ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 3.3) OR
(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")))
set(${_VAR} 1)
message(STATUS "Checking for C++11 compiler - available")
else()
message(STATUS "Checking for C++11 compiler - unavailable")
endif()
endmacro()
# Sets the appropriate flag to enable C++11 support
macro(enable_cxx11)
set (CMAKE_CXX_STANDARD 11)
set (CMAKE_CXX_STANDARD_REQUIRED ON)
add_definitions(-DPOCO_ENABLE_CPP11)
endmacro()
# Determines whether the compiler supports C++14
macro(check_for_cxx14_compiler _VAR)
message(STATUS "Checking for C++14 compiler")
set(${_VAR})
try_compile(_COMPILER_TEST_RESULT ${PROJECT_BINARY_DIR} ${PROJECT_SOURCE_DIR}/cmake/test_compiler.cpp CMAKE_FLAGS -DCMAKE_CXX_STANDARD=14 -DCMAKE_CXX_STANDARD_REQUIRED=ON)
if(NOT _COMPILER_TEST_RESULT AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
try_compile(_COMPILER_TEST_RESULT ${PROJECT_BINARY_DIR} ${PROJECT_SOURCE_DIR}/cmake/test_compiler.cpp CMAKE_FLAGS -DCMAKE_CXX_FLAGS="-stdlib=libc++" -DCMAKE_CXX_STANDARD=14 -DCMAKE_CXX_STANDARD_REQUIRED=ON)
if(_COMPILER_TEST_RESULT)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
else()
message(STATUS "To enable C++14 install libc++ standard library from https://libcxx.llvm.org/")
endif()
endif()
if(_COMPILER_TEST_RESULT AND ((MSVC AND (MSVC14)) OR
(CMAKE_COMPILER_IS_GNUCXX AND NOT ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 4.9.2) OR
(CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND NOT ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 3.4) OR
(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")))
set(${_VAR} 1)
message(STATUS "Checking for C++14 compiler - available")
else()
message(STATUS "Checking for C++14 compiler - unavailable")
endif()
endmacro()
# Sets the appropriate flag to enable C++14 support
macro(enable_cxx14)
set (CMAKE_CXX_STANDARD 14)
set (CMAKE_CXX_STANDARD_REQUIRED ON)
add_definitions(-DPOCO_ENABLE_CPP14)
endmacro()