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# ~~~
# Copyright (c) 2018 Valve Corporation
# Copyright (c) 2018 LunarG, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ~~~
# CMake project initialization ---------------------------------------------------------------------------------------------------
# This section contains pre-project() initialization, and ends with the project() command.
cmake_minimum_required(VERSION 3.10.2)
# NONE = this project has no language toolchain requirement.
project(Vulkan-Headers NONE)
file(READ "include/vulkan/vulkan_core.h" ver)
string(REGEX MATCH "#define[ ]+VK_HEADER_VERSION_COMPLETE[ ]+VK_MAKE_VERSION\\([ ]*([0-9]+),[ ]*([0-9]+),[ ]*VK_HEADER_VERSION[ ]*\\)" _ ${ver})
set(VK_VERSION_MAJOR "${CMAKE_MATCH_1}")
set(VK_VERSION_MINOR "${CMAKE_MATCH_2}")
string(REGEX MATCH "#define[ ]+VK_HEADER_VERSION[ ]+([0-9]+)" _ ${ver})
set(VK_HEADER_VERSION "${CMAKE_MATCH_1}")
# check if version parsing was successful
if(VK_VERSION_MAJOR STREQUAL "")
message(FATAL_ERROR "Error reading major version from 'include/vulkan/vulkan_core.h'")
endif()
if(VK_VERSION_MINOR STREQUAL "")
message(FATAL_ERROR "Error reading minor version from 'include/vulkan/vulkan_core.h'")
endif()
if(VK_HEADER_VERSION STREQUAL "")
message(FATAL_ERROR "Error reading header version from 'include/vulkan/vulkan_core.h'")
endif()
set(VK_VERSION_STRING "${VK_VERSION_MAJOR}.${VK_VERSION_MINOR}.${VK_HEADER_VERSION}")
message(STATUS "Found Vulkan-Headers VK_VERSION_STRING '${VK_VERSION_STRING}'")
option(VULKAN_HEADERS_SKIP_INSTALL "Skip install" OFF)
# User-interface declarations ----------------------------------------------------------------------------------------------------
# This section contains variables that affect development GUIs (e.g. CMake GUI and IDEs), such as option(), folders, and variables
# with the CACHE property.
include(GNUInstallDirs)
if(WIN32 AND CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
# Windows: if install locations not set by user, set install prefix to "<build_dir>\install".
set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install" CACHE PATH "default install path" FORCE)
endif()
# --------------------------------------------------------------------------------------------------------------------------------
# define exported targets for nested project builds to consume
add_library(Vulkan-Headers INTERFACE)
target_include_directories(Vulkan-Headers INTERFACE
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
add_library(Vulkan::Headers ALIAS Vulkan-Headers)
add_library(Vulkan-Registry INTERFACE)
target_include_directories(Vulkan-Registry INTERFACE
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/registry>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_DATADIR}/vulkan>
)
add_library(Vulkan::Registry ALIAS Vulkan-Registry)
# Installation
# This adds the following files to the install target
# - Vulkan Header files
# - Vulkan Registry files
# - CMake config files generated by CMake
# - VulkanHeadersConfig.cmake: searched for by find_package(VulkanHeaders)
# - VulkanHeadersConfigVersion.cmake: provides version numbers
# - VulkanHeadersTargets.cmake: CMake target definitions used by config file
if(NOT VULKAN_HEADERS_SKIP_INSTALL)
set(config_install_dir "${CMAKE_INSTALL_DATADIR}/cmake/VulkanHeaders")
set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
set(version_config "${generated_dir}/VulkanHeadersConfigVersion.cmake")
set(project_config "${generated_dir}/VulkanHeadersConfig.cmake")
set(TARGETS_EXPORT_NAME "VulkanHeadersTargets")
set(namespace "Vulkan::")
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
"${version_config}"
VERSION ${VK_VERSION_STRING}
COMPATIBILITY AnyNewerVersion
)
configure_package_config_file(
"cmake/Config.cmake.in"
"${project_config}"
INSTALL_DESTINATION "${config_install_dir}"
)
install(
TARGETS Vulkan-Headers Vulkan-Registry
EXPORT "${TARGETS_EXPORT_NAME}"
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)
install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/vulkan"
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/registry"
DESTINATION ${CMAKE_INSTALL_DATADIR}/vulkan
)
install(FILES "${project_config}" "${version_config}"
DESTINATION "${config_install_dir}"
)
install(
EXPORT "${TARGETS_EXPORT_NAME}"
NAMESPACE "${namespace}"
DESTINATION "${config_install_dir}")
# uninstall target
if(NOT TARGET uninstall)
configure_file(
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
IMMEDIATE
@ONLY)
add_custom_target(uninstall COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
endif()
endif()
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