CMakeLists.txt - third_party/Vulkan-Loader - Git at Google

 # ~~~
 # Copyright (c) 2014-2019 Valve Corporation
 # Copyright (c) 2014-2019 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_minimum_required(VERSION 3.10.2)

 # Apple: Must be set before enable_language() or project() as it may influence configuration of the toolchain and flags.
 set(CMAKE_OSX_DEPLOYMENT_TARGET "10.12" CACHE STRING "Minimum OS X deployment version")

 project(Vulkan-Loader)

 enable_testing()

 set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS API_NAME="Vulkan")

 # Enable beta Vulkan extensions
 add_definitions(-DVK_ENABLE_BETA_EXTENSIONS)

 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 find_package(PythonInterp 3 QUIET)

 if(IS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/external/googletest)
     option(BUILD_TESTS "Build Tests" ON)
 else()
     option(BUILD_TESTS "Build Tests" OFF)
 endif()

 if(APPLE)
     option(BUILD_STATIC_LOADER "Build a loader that can be statically linked" OFF)
 endif()

 if(BUILD_STATIC_LOADER)
     message(WARNING "The BUILD_STATIC_LOADER option has been set. Note that this will only work on MacOS and is not supported "
         "or tested as part of the loader. Use it at your own risk.")
 endif()

 if (TARGET Vulkan::Headers)
     message(STATUS "Using Vulkan headers from Vulkan::Headers target")
     get_target_property(VulkanHeaders_INCLUDE_DIRS Vulkan::Headers INTERFACE_INCLUDE_DIRECTORIES)
     get_target_property(VulkanRegistry_DIR Vulkan::Registry INTERFACE_INCLUDE_DIRECTORIES)
 else()
     find_package(VulkanHeaders)
     if(NOT ${VulkanHeaders_FOUND})
         message(FATAL_ERROR "Could not find Vulkan headers path. This can be fixed by setting VULKAN_HEADERS_INSTALL_DIR to an "
                             "installation of the Vulkan-Headers repository.")
     endif()
     if(NOT ${VulkanRegistry_FOUND})
         message(FATAL_ERROR "Could not find Vulkan registry path. This can be fixed by setting VULKAN_HEADERS_INSTALL_DIR to an "
                             "installation of the Vulkan-Headers repository.")
     endif()

     # set up the Vulkan::Headers target for consistency
     add_library(vulkan-headers INTERFACE)
     target_include_directories(vulkan-headers SYSTEM INTERFACE "${VulkanHeaders_INCLUDE_DIRS}")
     add_library(Vulkan::Headers ALIAS vulkan-headers)
 endif()

 option(USE_CCACHE "Use ccache" OFF)
 if(USE_CCACHE)
     find_program(CCACHE_FOUND ccache)
     if(CCACHE_FOUND)
         set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
     endif()
 endif()

 include(GNUInstallDirs)

 if(UNIX AND NOT APPLE) # i.e.: Linux
     include(FindPkgConfig)
 endif()

 if(APPLE)
     # CMake versions 3 or later need CMAKE_MACOSX_RPATH defined. This avoids the CMP0042 policy message.
     set(CMAKE_MACOSX_RPATH 1)
 endif()

 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()

 # 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(LOADER_HELPER_FOLDER "Helper Targets")

 if(UNIX)
     set(
         FALLBACK_CONFIG_DIRS "/etc/xdg"
         CACHE
             STRING
             "Search path to use when XDG_CONFIG_DIRS is unset or empty or the current process is SUID/SGID. Default is freedesktop compliant."
         )
     set(
         FALLBACK_DATA_DIRS "/usr/local/share:/usr/share"
         CACHE
             STRING
             "Search path to use when XDG_DATA_DIRS is unset or empty or the current process is SUID/SGID. Default is freedesktop compliant."
         )
     set(
         SYSCONFDIR ""
         CACHE
             STRING
             "System-wide search directory. If not set or empty, CMAKE_INSTALL_FULL_SYSCONFDIR and /etc are used."
         )
 endif()

 if(UNIX AND NOT APPLE) # i.e.: Linux
     option(BUILD_WSI_XCB_SUPPORT "Build XCB WSI support" ON)
     option(BUILD_WSI_XLIB_SUPPORT "Build Xlib WSI support" ON)
     option(BUILD_WSI_WAYLAND_SUPPORT "Build Wayland WSI support" ON)
     option(BUILD_WSI_DIRECTFB_SUPPORT "Build DirectFB WSI support" OFF)

     if(BUILD_WSI_XCB_SUPPORT)
         find_package(XCB REQUIRED)
     endif()

     if(BUILD_WSI_XLIB_SUPPORT)
         find_package(X11 REQUIRED)
     endif()

     if(BUILD_WSI_WAYLAND_SUPPORT)
         find_package(Wayland REQUIRED)
         include_directories(SYSTEM ${WAYLAND_CLIENT_INCLUDE_DIR})
     endif()

     if(BUILD_WSI_DIRECTFB_SUPPORT)
         find_package(DirectFB REQUIRED)
         include_directories(SYSTEM ${DIRECTFB_INCLUDE_DIR})
     endif()
 endif()

 if(WIN32)
     option(ENABLE_WIN10_ONECORE "Link the loader with OneCore umbrella libraries" OFF)
 endif()

 option(BUILD_LOADER "Build loader" ON)

 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
     set(COMMON_COMPILE_FLAGS "-Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers")
     set(COMMON_COMPILE_FLAGS "${COMMON_COMPILE_FLAGS} -fno-strict-aliasing -fno-builtin-memcmp")

     # For GCC version 7.1 or greater, we need to disable the implicit fallthrough warning since there's no consistent way to satisfy
     # all compilers until they all accept the C++17 standard
     if(CMAKE_COMPILER_IS_GNUCC)
         set(COMMON_COMPILE_FLAGS "${COMMON_COMPILE_FLAGS} -Wno-stringop-truncation -Wno-stringop-overflow")
         if(CMAKE_CXX_COMPILER_VERSION GREATER_EQUAL 7.1)
             set(COMMON_COMPILE_FLAGS "${COMMON_COMPILE_FLAGS} -Wimplicit-fallthrough=0")
         endif()
     endif()

     if(APPLE)
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COMMON_COMPILE_FLAGS}")
     #clang-cl on Windows
     elseif((CMAKE_C_COMPILER_ID MATCHES "Clang") AND (CMAKE_CXX_SIMULATE_ID MATCHES "MSVC"))
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Xclang -std=c99 ${COMMON_COMPILE_FLAGS}")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Xclang -std=c++11 -fno-rtti")
     # clang (not clang-cl) or gcc
     else()
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 ${COMMON_COMPILE_FLAGS}")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -fno-rtti")
     endif()

     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMMON_COMPILE_FLAGS}")

     if(UNIX)
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden")
     endif()
 endif()

 if(MSVC)
     # /WX: Treat warnings as errors
     # /GR-: Disable RTTI
     # /w34456: Warn about nested declarations
     # /w34701, /w34703: Warn about potentially uninitialized variables
     # /w34057: Warn about different indirection types.
     # /w34245: Warn about signed/unsigned mismatch.
     set(MSVC_LOADER_COMPILE_OPTIONS /WX /GR- /w34456 /w34701 /w34703 /w34057 /w34245)
 endif()

 # Optional codegen target
 if(PYTHONINTERP_FOUND)
     add_custom_target(VulkanLoader_generated_source
                       COMMAND ${PYTHON_EXECUTABLE} ${PROJECT_SOURCE_DIR}/scripts/generate_source.py
                               ${VulkanRegistry_DIR} --incremental
                       )
 else()
     message("WARNING: VulkanLoader_generated_source target requires python 3")
 endif()


 if(UNIX)
     set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS FALLBACK_CONFIG_DIRS="${FALLBACK_CONFIG_DIRS}" FALLBACK_DATA_DIRS="${FALLBACK_DATA_DIRS}")

     if(NOT (SYSCONFDIR STREQUAL ""))
         # SYSCONFDIR is specified, use it and do not force /etc.
         set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS SYSCONFDIR="${SYSCONFDIR}")
     else()
         set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS SYSCONFDIR="${CMAKE_INSTALL_FULL_SYSCONFDIR}")

         # Make sure /etc is searched by the loader
         if(NOT (CMAKE_INSTALL_FULL_SYSCONFDIR STREQUAL "/etc"))
             set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS EXTRASYSCONFDIR="/etc")
         endif()
     endif()
 endif()

 # 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)
     set_target_properties(uninstall PROPERTIES FOLDER ${LOADER_HELPER_FOLDER})
 endif()

 if(BUILD_LOADER)
     add_subdirectory(loader)
 endif()

 add_subdirectory(external)
 if(BUILD_TESTS)
     add_subdirectory(tests)
 endif()
	# ~~~
	# Copyright (c) 2014-2019 Valve Corporation
	# Copyright (c) 2014-2019 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_minimum_required(VERSION 3.10.2)

	# Apple: Must be set before enable_language() or project() as it may influence configuration of the toolchain and flags.
	set(CMAKE_OSX_DEPLOYMENT_TARGET "10.12" CACHE STRING "Minimum OS X deployment version")

	project(Vulkan-Loader)

	enable_testing()

	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS API_NAME="Vulkan")

	# Enable beta Vulkan extensions
	add_definitions(-DVK_ENABLE_BETA_EXTENSIONS)

	set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
	find_package(PythonInterp 3 QUIET)

	if(IS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/external/googletest)
	option(BUILD_TESTS "Build Tests" ON)
	else()
	option(BUILD_TESTS "Build Tests" OFF)
	endif()

	if(APPLE)
	option(BUILD_STATIC_LOADER "Build a loader that can be statically linked" OFF)
	endif()

	if(BUILD_STATIC_LOADER)
	message(WARNING "The BUILD_STATIC_LOADER option has been set. Note that this will only work on MacOS and is not supported "
	"or tested as part of the loader. Use it at your own risk.")
	endif()

	if (TARGET Vulkan::Headers)
	message(STATUS "Using Vulkan headers from Vulkan::Headers target")
	get_target_property(VulkanHeaders_INCLUDE_DIRS Vulkan::Headers INTERFACE_INCLUDE_DIRECTORIES)
	get_target_property(VulkanRegistry_DIR Vulkan::Registry INTERFACE_INCLUDE_DIRECTORIES)
	else()
	find_package(VulkanHeaders)
	if(NOT ${VulkanHeaders_FOUND})
	message(FATAL_ERROR "Could not find Vulkan headers path. This can be fixed by setting VULKAN_HEADERS_INSTALL_DIR to an "
	"installation of the Vulkan-Headers repository.")
	endif()
	if(NOT ${VulkanRegistry_FOUND})
	message(FATAL_ERROR "Could not find Vulkan registry path. This can be fixed by setting VULKAN_HEADERS_INSTALL_DIR to an "
	"installation of the Vulkan-Headers repository.")
	endif()

	# set up the Vulkan::Headers target for consistency
	add_library(vulkan-headers INTERFACE)
	target_include_directories(vulkan-headers SYSTEM INTERFACE "${VulkanHeaders_INCLUDE_DIRS}")
	add_library(Vulkan::Headers ALIAS vulkan-headers)
	endif()

	option(USE_CCACHE "Use ccache" OFF)
	if(USE_CCACHE)
	find_program(CCACHE_FOUND ccache)
	if(CCACHE_FOUND)
	set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
	endif()
	endif()

	include(GNUInstallDirs)

	if(UNIX AND NOT APPLE) # i.e.: Linux
	include(FindPkgConfig)
	endif()

	if(APPLE)
	# CMake versions 3 or later need CMAKE_MACOSX_RPATH defined. This avoids the CMP0042 policy message.
	set(CMAKE_MACOSX_RPATH 1)
	endif()

	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()

	# 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(LOADER_HELPER_FOLDER "Helper Targets")

	if(UNIX)
	set(
	FALLBACK_CONFIG_DIRS "/etc/xdg"
	CACHE
	STRING
	"Search path to use when XDG_CONFIG_DIRS is unset or empty or the current process is SUID/SGID. Default is freedesktop compliant."
	)
	set(
	FALLBACK_DATA_DIRS "/usr/local/share:/usr/share"
	CACHE
	STRING
	"Search path to use when XDG_DATA_DIRS is unset or empty or the current process is SUID/SGID. Default is freedesktop compliant."
	)
	set(
	SYSCONFDIR ""
	CACHE
	STRING
	"System-wide search directory. If not set or empty, CMAKE_INSTALL_FULL_SYSCONFDIR and /etc are used."
	)
	endif()

	if(UNIX AND NOT APPLE) # i.e.: Linux
	option(BUILD_WSI_XCB_SUPPORT "Build XCB WSI support" ON)
	option(BUILD_WSI_XLIB_SUPPORT "Build Xlib WSI support" ON)
	option(BUILD_WSI_WAYLAND_SUPPORT "Build Wayland WSI support" ON)
	option(BUILD_WSI_DIRECTFB_SUPPORT "Build DirectFB WSI support" OFF)

	if(BUILD_WSI_XCB_SUPPORT)
	find_package(XCB REQUIRED)
	endif()

	if(BUILD_WSI_XLIB_SUPPORT)
	find_package(X11 REQUIRED)
	endif()

	if(BUILD_WSI_WAYLAND_SUPPORT)
	find_package(Wayland REQUIRED)
	include_directories(SYSTEM ${WAYLAND_CLIENT_INCLUDE_DIR})
	endif()

	if(BUILD_WSI_DIRECTFB_SUPPORT)
	find_package(DirectFB REQUIRED)
	include_directories(SYSTEM ${DIRECTFB_INCLUDE_DIR})
	endif()
	endif()

	if(WIN32)
	option(ENABLE_WIN10_ONECORE "Link the loader with OneCore umbrella libraries" OFF)
	endif()

	option(BUILD_LOADER "Build loader" ON)

	if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
	set(COMMON_COMPILE_FLAGS "-Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers")
	set(COMMON_COMPILE_FLAGS "${COMMON_COMPILE_FLAGS} -fno-strict-aliasing -fno-builtin-memcmp")

	# For GCC version 7.1 or greater, we need to disable the implicit fallthrough warning since there's no consistent way to satisfy
	# all compilers until they all accept the C++17 standard
	if(CMAKE_COMPILER_IS_GNUCC)
	set(COMMON_COMPILE_FLAGS "${COMMON_COMPILE_FLAGS} -Wno-stringop-truncation -Wno-stringop-overflow")
	if(CMAKE_CXX_COMPILER_VERSION GREATER_EQUAL 7.1)
	set(COMMON_COMPILE_FLAGS "${COMMON_COMPILE_FLAGS} -Wimplicit-fallthrough=0")
	endif()
	endif()

	if(APPLE)
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COMMON_COMPILE_FLAGS}")
	#clang-cl on Windows
	elseif((CMAKE_C_COMPILER_ID MATCHES "Clang") AND (CMAKE_CXX_SIMULATE_ID MATCHES "MSVC"))
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Xclang -std=c99 ${COMMON_COMPILE_FLAGS}")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Xclang -std=c++11 -fno-rtti")
	# clang (not clang-cl) or gcc
	else()
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 ${COMMON_COMPILE_FLAGS}")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -fno-rtti")
	endif()

	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMMON_COMPILE_FLAGS}")

	if(UNIX)
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden")
	endif()
	endif()

	if(MSVC)
	# /WX: Treat warnings as errors
	# /GR-: Disable RTTI
	# /w34456: Warn about nested declarations
	# /w34701, /w34703: Warn about potentially uninitialized variables
	# /w34057: Warn about different indirection types.
	# /w34245: Warn about signed/unsigned mismatch.
	set(MSVC_LOADER_COMPILE_OPTIONS /WX /GR- /w34456 /w34701 /w34703 /w34057 /w34245)
	endif()

	# Optional codegen target
	if(PYTHONINTERP_FOUND)
	add_custom_target(VulkanLoader_generated_source
	COMMAND ${PYTHON_EXECUTABLE} ${PROJECT_SOURCE_DIR}/scripts/generate_source.py
	${VulkanRegistry_DIR} --incremental
	)
	else()
	message("WARNING: VulkanLoader_generated_source target requires python 3")
	endif()


	if(UNIX)
	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS FALLBACK_CONFIG_DIRS="${FALLBACK_CONFIG_DIRS}" FALLBACK_DATA_DIRS="${FALLBACK_DATA_DIRS}")

	if(NOT (SYSCONFDIR STREQUAL ""))
	# SYSCONFDIR is specified, use it and do not force /etc.
	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS SYSCONFDIR="${SYSCONFDIR}")
	else()
	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS SYSCONFDIR="${CMAKE_INSTALL_FULL_SYSCONFDIR}")

	# Make sure /etc is searched by the loader
	if(NOT (CMAKE_INSTALL_FULL_SYSCONFDIR STREQUAL "/etc"))
	set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS EXTRASYSCONFDIR="/etc")
	endif()
	endif()
	endif()

	# 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)
	set_target_properties(uninstall PROPERTIES FOLDER ${LOADER_HELPER_FOLDER})
	endif()

	if(BUILD_LOADER)
	add_subdirectory(loader)
	endif()

	add_subdirectory(external)
	if(BUILD_TESTS)
	add_subdirectory(tests)
	endif()