c237fae4aa
Also increase minimum CMake, GCC, and Clang versions to match Ubuntu 18.04 LTS. This sets our minimum supported version of the C++ standard to C++17.
106 lines
4.7 KiB
CMake
106 lines
4.7 KiB
CMake
# Some resources
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# https://github.com/dev-cafe/cmake-cookbook
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# https://cmake.org/cmake/help/v3.8/manual/cmake-compile-features.7.html
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macro(CompilerChecksAndSetups)
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if (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
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set(CMAKE_COMPILER_IS_CLANGXX TRUE)
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endif (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
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# ================================================================================
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# Needed for boost1.69
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# Avoid that Python (pyerrors.h) defines snprintf and vsnprintf
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if (MSVC AND NOT MSVC_VERSION VERSION_LESS 1900)
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add_definitions(-DHAVE_SNPRINTF)
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elseif (MINGW)
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add_definitions(-DHAVE_SNPRINTF)
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endif()
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# Allow developers to use Boost < 1.55
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if (NOT BOOST_MIN_VERSION)
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set(BOOST_MIN_VERSION 1.55)
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endif()
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# For older cmake versions the variable 'CMAKE_CXX_COMPILER_VERSION' is missing
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if(CMAKE_COMPILER_IS_GNUCXX AND NOT CMAKE_CXX_COMPILER_VERSION)
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execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion
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OUTPUT_VARIABLE CMAKE_CXX_COMPILER_VERSION)
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endif(CMAKE_COMPILER_IS_GNUCXX AND NOT CMAKE_CXX_COMPILER_VERSION)
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# Enabled C++17 for Freecad 0.20 and later
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set(BUILD_ENABLE_CXX_STD "C++17" CACHE STRING "Enable C++ standard")
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set_property(CACHE BUILD_ENABLE_CXX_STD PROPERTY STRINGS
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"C++17"
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"C++20"
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)
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if (CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.3)
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message(FATAL_ERROR "FreeCAD 0.20 and later requires C++17. G++ must be 7.3 or later, the used version is ${CMAKE_CXX_COMPILER_VERSION}")
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elseif(CMAKE_COMPILER_IS_CLANGXX AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0)
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message(FATAL_ERROR "FreeCAD 0.20 and later requires C++17. Clang must be 6.0 or later, the used version is ${CMAKE_CXX_COMPILER_VERSION}")
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endif()
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# Escape the two plus chars as otherwise cmake complains about invalid regex
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if(${BUILD_ENABLE_CXX_STD} MATCHES "C\\+\\+20")
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set(CMAKE_CXX_STANDARD 20)
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elseif(${BUILD_ENABLE_CXX_STD} MATCHES "C\\+\\+17")
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set(CMAKE_CXX_STANDARD 17)
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elseif(${BUILD_ENABLE_CXX_STD} MATCHES "C\\+\\+14")
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set(CMAKE_CXX_STANDARD 14)
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elseif (${BUILD_ENABLE_CXX_STD} MATCHES "C\\+\\+11")
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set(CMAKE_CXX_STANDARD 11)
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endif()
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# Log the compiler and version
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message(STATUS "Compiler: ${CMAKE_CXX_COMPILER_ID}, version: ${CMAKE_CXX_COMPILER_VERSION}")
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if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANGXX)
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include(${CMAKE_SOURCE_DIR}/cMake/ConfigureChecks.cmake)
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configure_file(${CMAKE_SOURCE_DIR}/config.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config.h)
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add_definitions(-DHAVE_CONFIG_H)
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# For now only set pedantic option for clang
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if(CMAKE_COMPILER_IS_CLANGXX)
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set(CMAKE_CXX_FLAGS "-Wall -Wextra -Wpedantic -Wno-write-strings ${CMAKE_CXX_FLAGS}")
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else()
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set(CMAKE_CXX_FLAGS "-Wall -Wextra -Wno-write-strings ${CMAKE_CXX_FLAGS}")
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endif()
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include_directories(${CMAKE_CURRENT_BINARY_DIR})
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# get linker errors as soon as possible and not at runtime e.g. for modules
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if(BUILD_DYNAMIC_LINK_PYTHON)
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if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-undefined,error")
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elseif(UNIX)
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined")
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endif()
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else(BUILD_DYNAMIC_LINK_PYTHON)
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if(CMAKE_COMPILER_IS_CLANGXX)
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-undefined,dynamic_lookup")
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endif()
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endif(BUILD_DYNAMIC_LINK_PYTHON)
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endif(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANGXX)
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if(CMAKE_COMPILER_IS_CLANGXX)
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# Disable warning about potentially uninstantiated static members
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# because it leads to a lot of false-positives.
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#
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# https://en.wikipedia.org/wiki/Xcode#Latest_versions
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if (APPLE)
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.0)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-undefined-var-template")
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endif()
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add_definitions(-DGL_SILENCE_DEPRECATION)
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elseif (UNIX)
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.9)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-undefined-var-template")
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endif()
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endif()
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# older boost.preprocessor turn off variadics for clang
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add_definitions(-DBOOST_PP_VARIADICS=1)
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message(STATUS "Force BOOST_PP_VARIADICS=1 for clang")
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endif()
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endmacro(CompilerChecksAndSetups)
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