CMakeLists.txt - platform/external/openxr-sdk - Git at Google

 # Copyright (c) 2017-2025 The Khronos Group Inc.
 #
 # SPDX-License-Identifier: Apache-2.0
 #
 # 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.

 # Note: This is the top-level CMake file for the OpenXR project.
 # It should contain only definitions that are applicable to the
 # entire project and includes for the sub-directories.

 cmake_minimum_required(VERSION 3.16)
 project(OPENXR)

 find_package(Python3 COMPONENTS Interpreter)
 include(CTest)

 # Enable IDE GUI folders.  "Helper targets" that don't have interesting source code should set their FOLDER property to this
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 set_property(
     GLOBAL PROPERTY PREDEFINED_TARGETS_FOLDER "CMake predefined targets"
 )
 set(LOADER_FOLDER "Loader")
 set(HELPER_FOLDER "Helpers")
 set(CODEGEN_FOLDER "Generated")
 set(TESTS_FOLDER "Tests")
 set(CONFORMANCE_TESTS_FOLDER "Conformance Test Suite")
 set(LOADER_TESTS_FOLDER "Loader Tests")
 set(API_LAYERS_FOLDER "Layers")
 set(SAMPLES_FOLDER "Samples")

 option(
     BUILD_FORCE_GENERATION
     "Force re-generation of files even in the presence of pre-generated copies, replacing those copies."
     OFF
 )

 if(BUILD_FORCE_GENERATION AND NOT Python3_EXECUTABLE)
     message(FATAL_ERROR "BUILD_FORCE_GENERATION requires Python")
 endif()

 string(TOUPPER "${CMAKE_GENERATOR_PLATFORM}" CMAKE_GENERATOR_PLATFORM_UPPER)

 # Artifact organization
 if(WIN32 OR ANDROID)
     option(
         INSTALL_TO_ARCHITECTURE_PREFIXES
         "Install platform-specific files to architecture-specific directories, for packaging"
         OFF
     )
 endif()

 if(WIN32 AND INSTALL_TO_ARCHITECTURE_PREFIXES)
     unset(_UWP_SUFFIX)
     if(CMAKE_SYSTEM_NAME STREQUAL "WindowsStore")
         set(_UWP_SUFFIX _uwp)
     endif()
     if(CMAKE_GENERATOR_PLATFORM_UPPER MATCHES "ARM.*")
         if(CMAKE_SIZEOF_VOID_P EQUAL 8)
             set(_PLATFORM ARM64)
         else()
             set(_PLATFORM ARM)
         endif()
     else()
         if(CMAKE_SIZEOF_VOID_P EQUAL 8)
             set(_PLATFORM x64)
         else()
             set(_PLATFORM Win32)
         endif()
     endif()

     include(GNUInstallDirs)
     set(CMAKE_INSTALL_BINDIR ${_PLATFORM}${_UWP_SUFFIX}/${CMAKE_INSTALL_BINDIR})
     set(CMAKE_INSTALL_LIBDIR ${_PLATFORM}${_UWP_SUFFIX}/${CMAKE_INSTALL_LIBDIR})

 elseif(ANDROID AND INSTALL_TO_ARCHITECTURE_PREFIXES)
     # This organizes things like a prefab module
     set(PREFAB_INSTALL_DIR prefab)
     set(PREFAB_HEADER_MODULE_INSTALL_DIR
         "${PREFAB_INSTALL_DIR}/modules/headers"
     )
     set(PREFAB_LOADER_MODULE_INSTALL_DIR
         "${PREFAB_INSTALL_DIR}/modules/openxr_loader"
     )
     set(CMAKE_INSTALL_LIBDIR
         "${PREFAB_LOADER_MODULE_INSTALL_DIR}/libs/android.${ANDROID_ABI}"
         CACHE STRING "Where to install libraries"
     )
     set(CMAKE_INSTALL_BINDIR ${CMAKE_INSTALL_LIBDIR})
     set(CMAKE_INSTALL_INCLUDEDIR ${PREFAB_HEADER_MODULE_INSTALL_DIR}/include)

     unset(NDK_MAJOR_VERSION)
     if(CMAKE_ANDROID_NDK)
         file(STRINGS "${CMAKE_ANDROID_NDK}/source.properties" NDK_PROPERTIES)
         foreach(_line ${NDK_PROPERTIES})
             if("${_line}" MATCHES
                "Pkg.Revision = ([0-9]+)[.]([0-9]+)[.]([0-9]+)"
             )
                 set(NDK_MAJOR_VERSION ${CMAKE_MATCH_1})
             endif()
         endforeach()
     else()
         message(FATAL_ERROR "Please set CMAKE_ANDROID_NDK to your NDK root!")
     endif()
     if(NDK_MAJOR_VERSION)
         message(STATUS "Building using NDK major version ${NDK_MAJOR_VERSION}")
     else()
         message(
             FATAL_ERROR
                 "Could not parse the major version from ${CMAKE_ANDROID_NDK}/source.properties"
         )
     endif()

 elseif(NOT ANDROID)
     include(GNUInstallDirs)
 endif()

 # Path separators ( : or ; ) are not handled well in CMake.
 # This seems like a reasonable approach.
 if(CMAKE_HOST_SYSTEM_NAME STREQUAL Windows)
     set(CODEGEN_PYTHON_PATH
         "${PROJECT_SOURCE_DIR}/specification/scripts;${PROJECT_SOURCE_DIR}/src/scripts;$ENV{PYTHONPATH}"
     )
 else()
     set(CODEGEN_PYTHON_PATH
         "${PROJECT_SOURCE_DIR}/specification/scripts:${PROJECT_SOURCE_DIR}/src/scripts:$ENV{PYTHONPATH}"
     )
 endif()

 add_subdirectory(include)
 add_subdirectory(src)

 # uninstall target
 if(NOT TARGET uninstall)
     configure_file(
         src/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
     )
     set_target_properties(uninstall PROPERTIES FOLDER ${HELPER_FOLDER})
 endif()

 find_program(BASH_COMMAND NAMES bash)
 if(BASH_COMMAND AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/specification/Makefile")
     option(
         BUILD_SPECIFICATION
         "Run './makeAllExts all' in the specification directory as part of the build - intended for one-step checking of spec changes"
         OFF
     )
     if(BUILD_SPECIFICATION)
         add_custom_target(
             spec-all ALL
             "${BASH_COMMAND}" ./makeAllExts all
             WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/specification"
             VERBATIM
             COMMENT "Running './makeAllExts all' in the specification directory"
             USES_TERMINAL
         )
     endif()
 endif()

 if(ANDROID AND INSTALL_TO_ARCHITECTURE_PREFIXES)
     set(LICENSE_DEST META-INF)
 else()
     set(LICENSE_DEST share/doc/openxr)
 endif()

 if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")
     install(
         FILES "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE"
         DESTINATION ${LICENSE_DEST}
         COMPONENT License
     )
 elseif(EXISTS "${CMAKE_SOURCE_DIR}/../../../../LICENSES/Apache-2.0.txt")
     # Building from a sources jar, where we omit that single file
     # to avoid confusion regarding the combination of licenses in the sources.
     # But for consistency, we will put it in the binaries.
     install(
         FILES "${CMAKE_SOURCE_DIR}/../../../../LICENSES/Apache-2.0.txt"
         RENAME LICENSE
         DESTINATION ${LICENSE_DEST}
         COMPONENT License
     )
 endif()
	# Copyright (c) 2017-2025 The Khronos Group Inc.
	#
	# SPDX-License-Identifier: Apache-2.0
	#
	# 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.

	# Note: This is the top-level CMake file for the OpenXR project.
	# It should contain only definitions that are applicable to the
	# entire project and includes for the sub-directories.

	cmake_minimum_required(VERSION 3.16)
	project(OPENXR)

	find_package(Python3 COMPONENTS Interpreter)
	include(CTest)

	# Enable IDE GUI folders. "Helper targets" that don't have interesting source code should set their FOLDER property to this
	set_property(GLOBAL PROPERTY USE_FOLDERS ON)
	set_property(
	GLOBAL PROPERTY PREDEFINED_TARGETS_FOLDER "CMake predefined targets"
	)
	set(LOADER_FOLDER "Loader")
	set(HELPER_FOLDER "Helpers")
	set(CODEGEN_FOLDER "Generated")
	set(TESTS_FOLDER "Tests")
	set(CONFORMANCE_TESTS_FOLDER "Conformance Test Suite")
	set(LOADER_TESTS_FOLDER "Loader Tests")
	set(API_LAYERS_FOLDER "Layers")
	set(SAMPLES_FOLDER "Samples")

	option(
	BUILD_FORCE_GENERATION
	"Force re-generation of files even in the presence of pre-generated copies, replacing those copies."
	OFF
	)

	if(BUILD_FORCE_GENERATION AND NOT Python3_EXECUTABLE)
	message(FATAL_ERROR "BUILD_FORCE_GENERATION requires Python")
	endif()

	string(TOUPPER "${CMAKE_GENERATOR_PLATFORM}" CMAKE_GENERATOR_PLATFORM_UPPER)

	# Artifact organization
	if(WIN32 OR ANDROID)
	option(
	INSTALL_TO_ARCHITECTURE_PREFIXES
	"Install platform-specific files to architecture-specific directories, for packaging"
	OFF
	)
	endif()

	if(WIN32 AND INSTALL_TO_ARCHITECTURE_PREFIXES)
	unset(_UWP_SUFFIX)
	if(CMAKE_SYSTEM_NAME STREQUAL "WindowsStore")
	set(_UWP_SUFFIX _uwp)
	endif()
	if(CMAKE_GENERATOR_PLATFORM_UPPER MATCHES "ARM.*")
	if(CMAKE_SIZEOF_VOID_P EQUAL 8)
	set(_PLATFORM ARM64)
	else()
	set(_PLATFORM ARM)
	endif()
	else()
	if(CMAKE_SIZEOF_VOID_P EQUAL 8)
	set(_PLATFORM x64)
	else()
	set(_PLATFORM Win32)
	endif()
	endif()

	include(GNUInstallDirs)
	set(CMAKE_INSTALL_BINDIR ${_PLATFORM}${_UWP_SUFFIX}/${CMAKE_INSTALL_BINDIR})
	set(CMAKE_INSTALL_LIBDIR ${_PLATFORM}${_UWP_SUFFIX}/${CMAKE_INSTALL_LIBDIR})

	elseif(ANDROID AND INSTALL_TO_ARCHITECTURE_PREFIXES)
	# This organizes things like a prefab module
	set(PREFAB_INSTALL_DIR prefab)
	set(PREFAB_HEADER_MODULE_INSTALL_DIR
	"${PREFAB_INSTALL_DIR}/modules/headers"
	)
	set(PREFAB_LOADER_MODULE_INSTALL_DIR
	"${PREFAB_INSTALL_DIR}/modules/openxr_loader"
	)
	set(CMAKE_INSTALL_LIBDIR
	"${PREFAB_LOADER_MODULE_INSTALL_DIR}/libs/android.${ANDROID_ABI}"
	CACHE STRING "Where to install libraries"
	)
	set(CMAKE_INSTALL_BINDIR ${CMAKE_INSTALL_LIBDIR})
	set(CMAKE_INSTALL_INCLUDEDIR ${PREFAB_HEADER_MODULE_INSTALL_DIR}/include)

	unset(NDK_MAJOR_VERSION)
	if(CMAKE_ANDROID_NDK)
	file(STRINGS "${CMAKE_ANDROID_NDK}/source.properties" NDK_PROPERTIES)
	foreach(_line ${NDK_PROPERTIES})
	if("${_line}" MATCHES
	"Pkg.Revision = ([0-9]+)[.]([0-9]+)[.]([0-9]+)"
	)
	set(NDK_MAJOR_VERSION ${CMAKE_MATCH_1})
	endif()
	endforeach()
	else()
	message(FATAL_ERROR "Please set CMAKE_ANDROID_NDK to your NDK root!")
	endif()
	if(NDK_MAJOR_VERSION)
	message(STATUS "Building using NDK major version ${NDK_MAJOR_VERSION}")
	else()
	message(
	FATAL_ERROR
	"Could not parse the major version from ${CMAKE_ANDROID_NDK}/source.properties"
	)
	endif()

	elseif(NOT ANDROID)
	include(GNUInstallDirs)
	endif()

	# Path separators ( : or ; ) are not handled well in CMake.
	# This seems like a reasonable approach.
	if(CMAKE_HOST_SYSTEM_NAME STREQUAL Windows)
	set(CODEGEN_PYTHON_PATH
	"${PROJECT_SOURCE_DIR}/specification/scripts;${PROJECT_SOURCE_DIR}/src/scripts;$ENV{PYTHONPATH}"
	)
	else()
	set(CODEGEN_PYTHON_PATH
	"${PROJECT_SOURCE_DIR}/specification/scripts:${PROJECT_SOURCE_DIR}/src/scripts:$ENV{PYTHONPATH}"
	)
	endif()

	add_subdirectory(include)
	add_subdirectory(src)

	# uninstall target
	if(NOT TARGET uninstall)
	configure_file(
	src/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
	)
	set_target_properties(uninstall PROPERTIES FOLDER ${HELPER_FOLDER})
	endif()

	find_program(BASH_COMMAND NAMES bash)
	if(BASH_COMMAND AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/specification/Makefile")
	option(
	BUILD_SPECIFICATION
	"Run './makeAllExts all' in the specification directory as part of the build - intended for one-step checking of spec changes"
	OFF
	)
	if(BUILD_SPECIFICATION)
	add_custom_target(
	spec-all ALL
	"${BASH_COMMAND}" ./makeAllExts all
	WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/specification"
	VERBATIM
	COMMENT "Running './makeAllExts all' in the specification directory"
	USES_TERMINAL
	)
	endif()
	endif()

	if(ANDROID AND INSTALL_TO_ARCHITECTURE_PREFIXES)
	set(LICENSE_DEST META-INF)
	else()
	set(LICENSE_DEST share/doc/openxr)
	endif()

	if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")
	install(
	FILES "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE"
	DESTINATION ${LICENSE_DEST}
	COMPONENT License
	)
	elseif(EXISTS "${CMAKE_SOURCE_DIR}/../../../../LICENSES/Apache-2.0.txt")
	# Building from a sources jar, where we omit that single file
	# to avoid confusion regarding the combination of licenses in the sources.
	# But for consistency, we will put it in the binaries.
	install(
	FILES "${CMAKE_SOURCE_DIR}/../../../../LICENSES/Apache-2.0.txt"
	RENAME LICENSE
	DESTINATION ${LICENSE_DEST}
	COMPONENT License
	)
	endif()