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10f41c06d9
Poco now use C++17. We can take some old code away because of that. We also raise requiments for C++17 so everything works as excpected with it. Co-authored-by: Kari Argillander <kari.argillander@fidelix.com>
45 lines
2.5 KiB
CMake
45 lines
2.5 KiB
CMake
# Copyright (c) 2013 Nathan Osman
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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# Determines whether the compiler supports C++17
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macro(check_for_cxx17_compiler _VAR)
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message(STATUS "Checking for C++17 compiler")
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set(${_VAR})
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try_compile(_COMPILER_TEST_RESULT ${PROJECT_BINARY_DIR} ${PROJECT_SOURCE_DIR}/cmake/test_compiler.cpp CMAKE_FLAGS -DCMAKE_CXX_STANDARD=17 -DCMAKE_CXX_STANDARD_REQUIRED=ON)
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if(NOT _COMPILER_TEST_RESULT AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
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try_compile(_COMPILER_TEST_RESULT ${PROJECT_BINARY_DIR} ${PROJECT_SOURCE_DIR}/cmake/test_compiler.cpp CMAKE_FLAGS -DCMAKE_CXX_FLAGS="-stdlib=libc++" -DCMAKE_CXX_STANDARD=17 -DCMAKE_CXX_STANDARD_REQUIRED=ON)
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if(_COMPILER_TEST_RESULT)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
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else()
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message(STATUS "To enable C++17 install libc++ standard library from https://libcxx.llvm.org/")
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endif()
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endif()
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if(_COMPILER_TEST_RESULT AND ((MSVC AND (MSVC14)) OR
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(CMAKE_COMPILER_IS_GNUCXX AND NOT ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 4.9.2) OR
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(CMAKE_CXX_COMPILER_ID STREQUAL "QCC" AND NOT ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 4.9.2) OR
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(CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND NOT ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 3.4) OR
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(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")))
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set(${_VAR} 1)
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message(STATUS "Checking for C++17 compiler - available")
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else()
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message(STATUS "Checking for C++17 compiler - unavailable")
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endif()
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endmacro()
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