mirror of
https://github.com/microsoft/GSL.git
synced 2024-11-03 17:56:43 -05:00
100 lines
3.3 KiB
CMake
100 lines
3.3 KiB
CMake
cmake_minimum_required(VERSION 3.1.3)
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project(GSL CXX)
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include(ExternalProject)
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find_package(Git)
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# Use GNUInstallDirs to provide the right locations on all platforms
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include(GNUInstallDirs)
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# creates a library GSL which is an interface (header files only)
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add_library(GSL INTERFACE)
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# determine whether this is a standalone project or included by other projects
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set(GSL_STANDALONE_PROJECT OFF)
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if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
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set(GSL_STANDALONE_PROJECT ON)
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endif ()
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set(GSL_CXX_STANDARD "14" CACHE STRING "Use c++ standard")
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set(GSL_CXX_STD "cxx_std_${GSL_CXX_STANDARD}")
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if (MSVC)
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set(GSL_CXX_STD_OPT "-std:c++${GSL_CXX_STANDARD}")
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else()
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set(GSL_CXX_STD_OPT "-std=c++${GSL_CXX_STANDARD}")
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endif()
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# when minimum version required is 3.8.0 remove if below
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# both branches do exactly the same thing
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if (CMAKE_VERSION VERSION_LESS 3.7.9)
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include(CheckCXXCompilerFlag)
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CHECK_CXX_COMPILER_FLAG("${GSL_CXX_STD_OPT}" COMPILER_SUPPORTS_CXX_STANDARD)
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if(COMPILER_SUPPORTS_CXX_STANDARD)
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target_compile_options(GSL INTERFACE "${GSL_CXX_STD_OPT}")
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else()
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message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no c++${GSL_CXX_STANDARD} support. Please use a different C++ compiler.")
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endif()
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else ()
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target_compile_features(GSL INTERFACE "${GSL_CXX_STD}")
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# on *nix systems force the use of -std=c++XX instead of -std=gnu++XX (default)
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set(CMAKE_CXX_EXTENSIONS OFF)
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endif()
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# add definitions to the library and targets that consume it
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target_compile_definitions(GSL INTERFACE
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$<$<CXX_COMPILER_ID:MSVC>:
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# remove unnecessary warnings about unchecked iterators
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_SCL_SECURE_NO_WARNINGS
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# remove deprecation warnings about std::uncaught_exception() (from catch)
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_SILENCE_CXX17_UNCAUGHT_EXCEPTION_DEPRECATION_WARNING
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>
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)
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# add include folders to the library and targets that consume it
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# the SYSTEM keyword suppresses warnings for users of the library
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if(GSL_STANDALONE_PROJECT)
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target_include_directories(GSL INTERFACE
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
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$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
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)
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else()
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target_include_directories(GSL SYSTEM INTERFACE
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
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$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
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)
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endif()
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if (CMAKE_VERSION VERSION_GREATER 3.7.8)
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if (MSVC_IDE)
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option(VS_ADD_NATIVE_VISUALIZERS "Configure project to use Visual Studio native visualizers" TRUE)
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else()
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set(VS_ADD_NATIVE_VISUALIZERS FALSE CACHE INTERNAL "Native visualizers are Visual Studio extension" FORCE)
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endif()
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# add natvis file to the library so it will automatically be loaded into Visual Studio
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if(VS_ADD_NATIVE_VISUALIZERS)
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target_sources(GSL INTERFACE
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/GSL.natvis>
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)
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endif()
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endif()
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install(TARGETS GSL EXPORT Microsoft.GSLConfig)
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install(
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DIRECTORY include/gsl
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DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
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)
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# Make library importable by other projects
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install(EXPORT Microsoft.GSLConfig NAMESPACE Microsoft.GSL:: DESTINATION share/Microsoft.GSL/cmake)
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export(TARGETS GSL NAMESPACE Microsoft.GSL:: FILE Microsoft.GSLConfig.cmake)
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option(GSL_TEST "Generate tests." ${GSL_STANDALONE_PROJECT})
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if (GSL_TEST)
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enable_testing()
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add_subdirectory(tests)
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endif ()
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