103 lines
4.2 KiB
CMake
103 lines
4.2 KiB
CMake
# ~~~
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# Copyright (c) 2018-2023 Valve Corporation
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# Copyright (c) 2018-2023 LunarG, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ~~~
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cmake_minimum_required(VERSION 3.14...3.25)
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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 VERSION ${VK_VERSION_STRING})
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if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.15")
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message(DEBUG "${PROJECT_NAME} = ${PROJECT_VERSION}")
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endif()
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add_library(Vulkan-Headers INTERFACE)
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target_include_directories(Vulkan-Headers INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>)
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add_library(Vulkan::Headers ALIAS Vulkan-Headers)
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if (CMAKE_VERSION VERSION_LESS "3.21")
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# https://cmake.org/cmake/help/latest/variable/PROJECT_IS_TOP_LEVEL.html
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string(COMPARE EQUAL ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_SOURCE_DIR} PROJECT_IS_TOP_LEVEL)
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endif()
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if (PROJECT_IS_TOP_LEVEL)
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option(BUILD_TESTS "Build the tests")
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if (BUILD_TESTS)
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add_subdirectory(tests)
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endif()
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include(GNUInstallDirs)
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include(CMakePackageConfigHelpers)
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# Location registry files will be installed to
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set(VLK_REGISTRY_DIR "${CMAKE_INSTALL_DATADIR}/vulkan")
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# Install header files
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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 ${CMAKE_INSTALL_INCLUDEDIR})
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# Install registry files
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install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/registry" DESTINATION ${VLK_REGISTRY_DIR} USE_SOURCE_PERMISSIONS)
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# Where *.cmake files will be installed
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set(cmake_files_install_dir ${CMAKE_INSTALL_DATADIR}/cmake/VulkanHeaders/)
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# Set EXPORT_NAME for consistency with established names. The CMake generated ones won't work.
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set_target_properties(Vulkan-Headers PROPERTIES EXPORT_NAME "Headers")
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# Add find_package() support
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install(TARGETS Vulkan-Headers EXPORT VulkanHeadersTargets INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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install(EXPORT VulkanHeadersTargets FILE VulkanHeadersTargets.cmake NAMESPACE "Vulkan::" DESTINATION ${cmake_files_install_dir})
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set(vulkan_headers_config "${CMAKE_CURRENT_BINARY_DIR}/VulkanHeadersConfig.cmake")
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set(VULKAN_HEADERS_REGISTRY_DIRECTORY "${VLK_REGISTRY_DIR}/registry")
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configure_package_config_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/VulkanHeadersConfig.cmake.in ${vulkan_headers_config}
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INSTALL_DESTINATION ${cmake_files_install_dir}
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PATH_VARS VULKAN_HEADERS_REGISTRY_DIRECTORY
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NO_SET_AND_CHECK_MACRO
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NO_CHECK_REQUIRED_COMPONENTS_MACRO
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)
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set(config_version "${CMAKE_CURRENT_BINARY_DIR}/VulkanHeadersConfigVersion.cmake")
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write_basic_package_version_file(${config_version} COMPATIBILITY SameMajorVersion ARCH_INDEPENDENT)
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install(FILES ${config_version} ${vulkan_headers_config} DESTINATION ${cmake_files_install_dir})
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endif()
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