mirror of https://github.com/procxx/kepka.git
67 lines
1.9 KiB
CMake
67 lines
1.9 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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# 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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# 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_MAJOR_VERSION VERSION_LESS 3.7.9)
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if (NOT MSVC)
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include(CheckCXXCompilerFlag)
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CHECK_CXX_COMPILER_FLAG("-std=c++14" COMPILER_SUPPORTS_CXX14)
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if(COMPILER_SUPPORTS_CXX14)
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target_compile_options(GSL INTERFACE "-std=c++14")
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else()
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message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++14 support. Please use a different C++ compiler.")
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endif()
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endif()
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else ()
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# set the GSL library to be compiled only with c++14
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target_compile_features(GSL INTERFACE cxx_std_14)
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# on *nix systems force the use of -std=c++XX instead of -std=gnu++XX (default)
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set(CMAKE_CXX_EXTENSIONS OFF)
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endif()
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# add definitions to the library and targets that consume it
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target_compile_definitions(GSL INTERFACE
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$<$<CXX_COMPILER_ID:MSVC>:
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# remove unnecessary warnings about unchecked iterators
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_SCL_SECURE_NO_WARNINGS
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>
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)
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# add include folders to the library and targets that consume it
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target_include_directories(GSL INTERFACE
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$<BUILD_INTERFACE:
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${CMAKE_CURRENT_SOURCE_DIR}/include
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>
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)
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# add natvis file to the library so it will automatically be loaded into Visual Studio
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target_sources(GSL INTERFACE
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${CMAKE_CURRENT_SOURCE_DIR}/GSL.natvis
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)
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install(
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DIRECTORY include/gsl
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DESTINATION include
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)
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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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