mirror of
https://github.com/microsoft/GSL.git
synced 2024-11-03 17:56:43 -05:00
cb2d1af89a
* Added template argument deduction for not_null
This allows compilers with c++17 support to infer template
instantiation types when calling not_null constructor:
int foo(not_null<const int*> x);
int main()
{
int t = 0;
not_null x{ &t };
return foo(not_null{ &t });
}
* replaced deduction guides by a simple constructor
* Updated tests
* fixed check for availability of std::byte
* testing c++1z on clang
* fixed cmakelists extra endif
* include cstddef header for clang and gcc in pointers
* fixed a typo
* fix missing nullptr_t type
* fixed typo in CMakeLists.tst
* change approach to c++17 testing, step one: revert cmake testing, update clang5.0 package
removed using latest c++ due to clang5.0 failing,
update clang5.0 travis config to use llvm-toolchain-trusty-5.0
* addressed comments
87 lines
2.6 KiB
CMake
87 lines
2.6 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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include(CheckCXXCompilerFlag)
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if (NOT MSVC)
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CHECK_CXX_COMPILER_FLAG("-std=c++14" COMPILER_SUPPORTS_CXX14)
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else()
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CHECK_CXX_COMPILER_FLAG("-std:c++14" COMPILER_SUPPORTS_CXX14)
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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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if (NOT MSVC)
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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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else()
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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 ${CMAKE_CXX_COMPILER} has no C++14 support. Please use a different C++ compiler.")
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endif()
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endif()
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else ()
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target_compile_features(GSL INTERFACE cxx_std_14)
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# on *nix systems force the use of -std=c++XX instead of -std=gnu++XX (default)
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set(CMAKE_CXX_EXTENSIONS OFF)
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endif()
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# add definitions to the library and targets that consume it
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target_compile_definitions(GSL INTERFACE
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$<$<CXX_COMPILER_ID:MSVC>:
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# remove unnecessary warnings about unchecked iterators
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_SCL_SECURE_NO_WARNINGS
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>
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)
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# add include folders to the library and targets that consume it
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target_include_directories(GSL INTERFACE
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$<BUILD_INTERFACE:
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${CMAKE_CURRENT_SOURCE_DIR}/include
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>
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)
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if ((CMAKE_VERSION GREATER 3.7.9) OR (CMAKE_VERSION EQUAL 3.7.9))
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if (MSVC_IDE)
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option(VS_ADD_NATIVE_VISUALIZERS "Configure project to use Visual Studio native visualizers" TRUE)
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else()
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set(VS_ADD_NATIVE_VISUALIZERS FALSE CACHE INTERNAL "Native visualizers are Visual Studio extension" FORCE)
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endif()
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# add natvis file to the library so it will automatically be loaded into Visual Studio
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if(VS_ADD_NATIVE_VISUALIZERS)
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target_sources(GSL INTERFACE
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${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(
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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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