mirror of
https://github.com/KhronosGroup/Vulkan-Headers.git
synced 2025-04-03 20:24:58 +00:00
d64e9e156a
The new name better indicates that the target is for Vulkan-Hpp. The old Vulkan-Module and Vulkan::Module targets are now deprecated and users should switch to Vulkan-HppModule. Vulkan-HppModule now supports `import std` when available. The commit disables cxx_extensions when using clang-16 due to known issues.
125 lines
6.1 KiB
CMake
125 lines
6.1 KiB
CMake
# ~~~
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# Copyright 2018-2023 The Khronos Group Inc.
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# Copyright 2018-2023 Valve Corporation
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# Copyright 2018-2023 LunarG, Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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# ~~~
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cmake_minimum_required(VERSION 3.22.1)
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# NOTE: Parsing the version like this is suboptimal but neccessary due to our release process:
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# https://github.com/KhronosGroup/Vulkan-Headers/pull/346
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#
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# As shown a more robust approach would be just to add basic test code to check the project version.
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function(vlk_get_header_version)
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set(vulkan_core_header_file "${CMAKE_CURRENT_SOURCE_DIR}/include/vulkan/vulkan_core.h")
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if (NOT EXISTS ${vulkan_core_header_file})
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message(FATAL_ERROR "Couldn't find vulkan_core.h!")
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endif()
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file(READ ${vulkan_core_header_file} ver)
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if (ver MATCHES "#define[ ]+VK_HEADER_VERSION_COMPLETE[ ]+VK_MAKE_API_VERSION\\([ ]*[0-9]+,[ ]*([0-9]+),[ ]*([0-9]+),[ ]*VK_HEADER_VERSION[ ]*\\)")
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set(MAJOR_VERSION "${CMAKE_MATCH_1}")
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set(MINOR_VERSION "${CMAKE_MATCH_2}")
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else()
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message(FATAL_ERROR "Couldn't get major/minor version")
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endif()
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if (ver MATCHES "#define[ ]+VK_HEADER_VERSION[ ]+([0-9]+)")
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set(PATCH_VERSION "${CMAKE_MATCH_1}")
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else()
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message(FATAL_ERROR "Couldn't get the patch version")
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endif()
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set(VK_VERSION_STRING "${MAJOR_VERSION}.${MINOR_VERSION}.${PATCH_VERSION}" PARENT_SCOPE)
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endfunction()
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vlk_get_header_version()
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project(VULKAN_HEADERS LANGUAGES C CXX VERSION ${VK_VERSION_STRING})
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# options for Vulkan-Headers and the Vulkan-Hpp C++20 module
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option(VULKAN_HEADERS_ENABLE_TESTS "Test Vulkan-Headers" ${PROJECT_IS_TOP_LEVEL})
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option(VULKAN_HEADERS_ENABLE_INSTALL "Install Vulkan-Headers" ${PROJECT_IS_TOP_LEVEL})
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option(VULKAN_HEADERS_ENABLE_MODULE "Enables building of the Vulkan C++20 module; requires minimum CMake version 3.28" OFF)
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option(VULKAN_HEADERS_ENABLE_MODULE_STD "Enables building of the Vulkan C++20 module with import std; requires minimum CMake version 3.30" OFF)
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# set up Vulkan-Headers
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add_library(Vulkan-Headers INTERFACE)
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add_library(Vulkan::Headers ALIAS Vulkan-Headers)
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target_include_directories(Vulkan-Headers INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>)
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if (VULKAN_HEADERS_ENABLE_MODULE)
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# check for compiler support
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if ((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" AND (MSVC_VERSION GREATER_EQUAL "1941")) OR
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# clang-cl doesn't currently support modules
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(CMAKE_CXX_COMPILER_ID STREQUAL "Clang"
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AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "16.0"
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AND (NOT CMAKE_C_COMPILER_FRONTEND_VARIANT MATCHES "MSVC")
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AND (NOT CMAKE_CXX_COMPILER_CLANG_SCAN_DEPS STREQUAL CMAKE_CXX_COMPILER_CLANG_SCAN_DEPS-NOTFOUND)) OR
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(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "14.0")
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)
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# check for CMake support
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if(VULKAN_HEADERS_ENABLE_MODULE_STD AND CMAKE_VERSION VERSION_LESS "3.30")
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message(FATAL_ERROR "Vulkan-Hpp: C++20 module with import std requires CMake 3.30 or later")
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elseif (CMAKE_VERSION VERSION_LESS "3.28")
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message(FATAL_ERROR "Vulkan-Hpp: C++20 module requires CMake 3.28 or later")
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endif()
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# set up Vulkan-HppModule
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add_library(Vulkan-HppModule)
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add_library(Vulkan::HppModule ALIAS Vulkan-HppModule)
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target_sources(Vulkan-HppModule
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PUBLIC
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FILE_SET module
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TYPE CXX_MODULES
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FILES "${CMAKE_CURRENT_SOURCE_DIR}/include/vulkan/vulkan.cppm")
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if (VULKAN_HEADERS_ENABLE_MODULE_STD)
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target_compile_features(Vulkan-HppModule
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PRIVATE cxx_std_23
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INTERFACE cxx_std_20) # only C++20 is required to consume this module
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set_target_properties(Vulkan-HppModule PROPERTIES CXX_MODULE_STD ON)
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else()
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target_compile_features(Vulkan-HppModule PUBLIC cxx_std_20)
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endif()
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target_link_libraries(Vulkan-HppModule PUBLIC Vulkan::Headers)
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# Clang 16's module support can be broken with extensions enabled
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if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL "16.0")
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set_target_properties(Vulkan-HppModule PROPERTIES CXX_EXTENSIONS OFF)
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endif()
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# set up fallback targets to notify about name deprecation
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add_library(Vulkan-Module INTERFACE)
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add_library(Vulkan::Module ALIAS Vulkan-Module)
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target_link_libraries(Vulkan-Module INTERFACE Vulkan::HppModule)
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set_target_properties(Vulkan-Module PROPERTIES
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DEPRECATION "The Vulkan-Module and Vulkan::Module targets have been deprecated by the Vulkan-HppModule and Vulkan::HppModule targets respectively and will be removed at a future date.")
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else()
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message(FATAL_ERROR "Vulkan-Hpp: C++20 module support is requested but was disabled due to lacking compiler support on this platform")
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endif()
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endif()
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if (VULKAN_HEADERS_ENABLE_TESTS)
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enable_testing() # This is only effective in the top level CMakeLists.txt file.
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add_subdirectory(tests)
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endif()
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if (VULKAN_HEADERS_ENABLE_INSTALL)
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include(GNUInstallDirs)
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include(CMakePackageConfigHelpers)
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install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/vk_video" DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/vulkan" DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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# Preserve source permissions https://github.com/KhronosGroup/Vulkan-Headers/issues/336
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install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/registry" DESTINATION "${CMAKE_INSTALL_DATADIR}/vulkan" USE_SOURCE_PERMISSIONS)
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set_target_properties(Vulkan-Headers PROPERTIES EXPORT_NAME "Headers")
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install(TARGETS Vulkan-Headers EXPORT VulkanHeadersConfig INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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install(EXPORT VulkanHeadersConfig NAMESPACE "Vulkan::" DESTINATION "share/cmake/VulkanHeaders")
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set(version_config "${CMAKE_CURRENT_BINARY_DIR}/generated/VulkanHeadersConfigVersion.cmake")
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write_basic_package_version_file("${version_config}" COMPATIBILITY SameMajorVersion ARCH_INDEPENDENT)
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install(FILES "${version_config}" DESTINATION "share/cmake/VulkanHeaders")
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endif()
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