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

 # ~~~
 # Copyright (c) 2014-2018 Valve Corporation
 # Copyright (c) 2014-2018 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_minimum_required(VERSION 2.8.11)

 # This must come before the project command.
 set(CMAKE_OSX_DEPLOYMENT_TARGET "10.12" CACHE STRING "Minimum OS X deployment version")

 project(Vulkan-ValidationLayers)
 # set (CMAKE_VERBOSE_MAKEFILE 1)

 # The API_NAME allows renaming builds to avoid conflicts with installed SDKs. The MAJOR number of the version we're building, used
 # in naming <api-name>-<major>.dll (and other files).
 set(API_NAME "Vulkan" CACHE STRING "API name to use when building")
 set(MAJOR "1")
 string(TOLOWER ${API_NAME} API_LOWERCASE)

 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake")

 find_package(PythonInterp 3 REQUIRED)

 find_package(VulkanHeaders)

 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(CCACHE_FOUND)
 endif()

 set(CMAKE_POSITION_INDEPENDENT_CODE ON)

 include(GNUInstallDirs)
 # Set a better default install location for Windows only if the user did not provide one.
 if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT AND WIN32)
     set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install" CACHE PATH "default install path" FORCE)
 endif()

 if(APPLE)
     # CMake versions 3 or later need CMAKE_MACOSX_RPATH defined. This avoids the CMP0042 policy message.
     set(CMAKE_MACOSX_RPATH 1)
     # The "install" target for MacOS fixes up bundles in place.
     set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR})
 endif()

 # Enable IDE GUI folders
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 # "Helper" targets that don't have interesting source code should set their FOLDER property to this
 set(LAYERS_HELPER_FOLDER "Helper Targets")

 if(CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Darwin")
     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."
         )
 endif()

 if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
     include(FindPkgConfig)
     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_MIR_SUPPORT "Build Mir WSI support" OFF)
     set(DEMOS_WSI_SELECTION "XCB" CACHE STRING "Select WSI target for demos (XCB, XLIB, WAYLAND, MIR, DISPLAY)")

     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(${WAYLAND_CLIENT_INCLUDE_DIR})
     endif()

     if(BUILD_WSI_MIR_SUPPORT)
         find_package(Mir REQUIRED)
     endif()
 endif()

 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 AND NOT (CMAKE_CXX_COMPILER_VERSION LESS 7.1))
         set(COMMON_COMPILE_FLAGS "${COMMON_COMPILE_FLAGS} -Wimplicit-fallthrough=0")
     endif()

     if(APPLE)
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COMMON_COMPILE_FLAGS}")
     else()
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 ${COMMON_COMPILE_FLAGS}")
     endif()
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMMON_COMPILE_FLAGS} -std=c++11 -fno-rtti")
     if(UNIX)
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden")
     endif()
 endif()

 if(WIN32)
     # Treat warnings as errors
     add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/WX>")
     # Disable RTTI
     add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/GR->")
     # Warn about nested declarations
     add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/w34456>")
     # Warn about potentially uninitialized variables
     add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/w34701>")
     add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/w34703>")
     # Warn about different indirection types.
     add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/w34057>")
     # Warn about signed/unsigned mismatch.
     add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/w34245>")
 endif()

 if(IS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/external/googletest)
     option(BUILD_TESTS "Build tests" ON)
 else()
     option(BUILD_TESTS "Build tests" OFF)
 endif()
 option(INSTALL_TESTS "Install tests" OFF)
 option(BUILD_LAYERS "Build layers" ON)
 option(BUILD_LAYER_SUPPORT_FILES "Generate layer files" OFF) # For generating files when not building layers

 set(GLSLANG_INSTALL_DIR "GLSLANG-NOTFOUND" CACHE PATH "Absolute path to a glslang install directory")
 if(NOT GLSLANG_INSTALL_DIR AND NOT DEFINED ENV{GLSLANG_INSTALL_DIR})
     message(FATAL_ERROR "Must define location of glslang binaries -- see BUILD.md")
 endif()

 # Cmake command line option overrides environment variable
 if(NOT GLSLANG_INSTALL_DIR)
     set(GLSLANG_INSTALL_DIR $ENV{GLSLANG_INSTALL_DIR})
 endif()
 message(STATUS "Using glslang install located at ${GLSLANG_INSTALL_DIR}")
 set(SPIRV_TOOLS_BINARY_ROOT "${GLSLANG_INSTALL_DIR}/lib"
     CACHE PATH "User defined path to the SPIRV-Tools binaries for this project")
 set(SPIRV_TOOLS_OPT_BINARY_ROOT "${GLSLANG_INSTALL_DIR}/lib"
     CACHE PATH "User defined path to the SPIRV-Tools-opt binaries for this project")
 set(GLSLANG_SPIRV_INCLUDE_DIR "${GLSLANG_INSTALL_DIR}/include" CACHE PATH "Path to glslang spirv headers")
 set(SPIRV_TOOLS_INCLUDE_DIR "${GLSLANG_INSTALL_DIR}/include" CACHE PATH "Path to spirv tools headers")
 set(GLSLANG_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")
 set(GLSLANG_DEBUG_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")
 set(SPIRV_TOOLS_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")
 set(SPIRV_TOOLS_DEBUG_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")
 set(SPIRV_TOOLS_OPT_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")
 set(SPIRV_TOOLS_OPT_DEBUG_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")

 find_library(GLSLANG_LIB NAMES glslang HINTS ${GLSLANG_SEARCH_PATH})

 find_library(OGLCompiler_LIB NAMES OGLCompiler HINTS ${GLSLANG_SEARCH_PATH})

 find_library(OSDependent_LIB NAMES OSDependent HINTS ${GLSLANG_SEARCH_PATH})

 find_library(HLSL_LIB NAMES HLSL HINTS ${GLSLANG_SEARCH_PATH})

 find_library(SPIRV_LIB NAMES SPIRV HINTS ${GLSLANG_SEARCH_PATH})

 find_library(SPIRV_REMAPPER_LIB NAMES SPVRemapper HINTS ${GLSLANG_SEARCH_PATH})

 find_library(SPIRV_TOOLS_LIB NAMES SPIRV-Tools HINTS ${SPIRV_TOOLS_SEARCH_PATH})

 find_library(SPIRV_TOOLS_OPT_LIB NAMES SPIRV-Tools-opt HINTS ${SPIRV_TOOLS_OPT_SEARCH_PATH})

 if(WIN32)
     add_library(glslang STATIC IMPORTED)
     add_library(OGLCompiler STATIC IMPORTED)
     add_library(OSDependent STATIC IMPORTED)
     add_library(HLSL STATIC IMPORTED)
     add_library(SPIRV STATIC IMPORTED)
     add_library(SPVRemapper STATIC IMPORTED)
     add_library(Loader STATIC IMPORTED)
     add_library(SPIRV-Tools-opt STATIC IMPORTED)
     add_library(SPIRV-Tools STATIC IMPORTED)

     find_library(GLSLANG_DLIB NAMES glslangd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
     find_library(OGLCompiler_DLIB NAMES OGLCompilerd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
     find_library(OSDependent_DLIB NAMES OSDependentd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
     find_library(HLSL_DLIB NAMES HLSLd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
     find_library(SPIRV_DLIB NAMES SPIRVd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
     find_library(SPIRV_REMAPPER_DLIB NAMES SPVRemapperd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
     find_library(SPIRV_TOOLS_DLIB NAMES SPIRV-Toolsd HINTS ${SPIRV_TOOLS_DEBUG_SEARCH_PATH})
     find_library(SPIRV_TOOLS_OPT_DLIB NAMES SPIRV-Tools-optd HINTS ${SPIRV_TOOLS_OPT_DEBUG_SEARCH_PATH})
     set_target_properties(glslang PROPERTIES IMPORTED_LOCATION "${GLSLANG_LIB}" IMPORTED_LOCATION_DEBUG "${GLSLANG_DLIB}")
     set_target_properties(
         OGLCompiler PROPERTIES IMPORTED_LOCATION "${OGLCompiler_LIB}" IMPORTED_LOCATION_DEBUG "${OGLCompiler_DLIB}")
     set_target_properties(
         OSDependent PROPERTIES IMPORTED_LOCATION "${OSDependent_LIB}" IMPORTED_LOCATION_DEBUG "${OSDependent_DLIB}")
     set_target_properties(HLSL PROPERTIES IMPORTED_LOCATION "${HLSL_LIB}" IMPORTED_LOCATION_DEBUG "${HLSL_DLIB}")
     set_target_properties(SPIRV PROPERTIES IMPORTED_LOCATION "${SPIRV_LIB}" IMPORTED_LOCATION_DEBUG "${SPIRV_DLIB}")
     set_target_properties(
         SPVRemapper PROPERTIES IMPORTED_LOCATION "${SPIRV_REMAPPER_LIB}" IMPORTED_LOCATION_DEBUG "${SPIRV_REMAPPER_DLIB}")
     set_target_properties(
         SPIRV-Tools PROPERTIES IMPORTED_LOCATION "${SPIRV_TOOLS_LIB}" IMPORTED_LOCATION_DEBUG "${SPIRV_TOOLS_DLIB}")
     set_target_properties(
         SPIRV-Tools-opt PROPERTIES IMPORTED_LOCATION "${SPIRV_TOOLS_OPT_LIB}" IMPORTED_LOCATION_DEBUG "${SPIRV_TOOLS_OPT_DLIB}")
 endif()

 if(WIN32)
     set(SPIRV_TOOLS_LIBRARIES SPIRV-Tools-opt SPIRV-Tools)
     set(GLSLANG_LIBRARIES glslang OGLCompiler OSDependent HLSL SPIRV SPVRemapper ${SPIRV_TOOLS_LIBRARIES})
 else()
     set(SPIRV_TOOLS_LIBRARIES ${SPIRV_TOOLS_OPT_LIB} ${SPIRV_TOOLS_LIB})
     set(GLSLANG_LIBRARIES
         ${GLSLANG_LIB}
         ${OGLCompiler_LIB}
         ${OSDependent_LIB}
         ${HLSL_LIB}
         ${SPIRV_LIB}
         ${SPIRV_REMAPPER_LIB}
         ${SPIRV_TOOLS_LIBRARIES})
 endif()

 set(PYTHON_CMD ${PYTHON_EXECUTABLE})

 if(NOT WIN32)
     add_definitions(-DFALLBACK_CONFIG_DIRS="${FALLBACK_CONFIG_DIRS}")
     add_definitions(-DFALLBACK_DATA_DIRS="${FALLBACK_DATA_DIRS}")
     add_definitions(-DSYSCONFDIR="${CMAKE_INSTALL_FULL_SYSCONFDIR}")

     # Make sure /etc is searched by the loader
     if(NOT (CMAKE_INSTALL_FULL_SYSCONFDIR STREQUAL "/etc"))
         add_definitions(-DEXTRASYSCONFDIR="/etc")
     endif()
 endif()

 # Generate dependent helper files
 set(SCRIPTS_DIR "${PROJECT_SOURCE_DIR}/scripts")
 # Define macro used for building vkxml generated files
 macro(run_vk_xml_generate dependency output)
     add_custom_command(OUTPUT ${output}
                        COMMAND ${PYTHON_CMD} ${SCRIPTS_DIR}/lvl_genvk.py -registry ${VulkanRegistry_DIR}/vk.xml -scripts
                                ${VulkanRegistry_DIR} ${output}
                        DEPENDS ${VulkanRegistry_DIR}/vk.xml
                                ${VulkanRegistry_DIR}/generator.py
                                ${SCRIPTS_DIR}/${dependency}
                                ${SCRIPTS_DIR}/lvl_genvk.py
                                ${VulkanRegistry_DIR}/reg.py)
 endmacro()
 add_custom_target(generate_helper_files
                   DEPENDS vk_enum_string_helper.h
                           vk_safe_struct.h
                           vk_safe_struct.cpp
                           vk_object_types.h
                           vk_layer_dispatch_table.h
                           vk_dispatch_table_helper.h
                           vk_extension_helper.h
                           vk_typemap_helper.h)
 set_target_properties(generate_helper_files PROPERTIES FOLDER ${LAYERS_HELPER_FOLDER})
 # Rules to build generated helper files
 run_vk_xml_generate(loader_extension_generator.py vk_layer_dispatch_table.h)
 run_vk_xml_generate(dispatch_table_helper_generator.py vk_dispatch_table_helper.h)
 run_vk_xml_generate(helper_file_generator.py vk_safe_struct.h)
 run_vk_xml_generate(helper_file_generator.py vk_safe_struct.cpp)
 run_vk_xml_generate(helper_file_generator.py vk_enum_string_helper.h)
 run_vk_xml_generate(helper_file_generator.py vk_object_types.h)
 run_vk_xml_generate(helper_file_generator.py vk_extension_helper.h)
 run_vk_xml_generate(helper_file_generator.py vk_typemap_helper.h)

 # ~~~
 # Layer Utils Library.
 # For Windows, we use a static lib because the Windows loader has a fairly restrictive loader search
 # path that can't be easily modified to point it to the same directory that contains the layers.
 # TODO: This should not be a library -- in future, include files directly in layers.
 # ~~~
 set(VALIDATION_LAYER_UTILS_SOURCES
     layers/vk_layer_config.cpp
     layers/vk_layer_extension_utils.cpp
     layers/vk_layer_utils.cpp
     layers/vk_format_utils.cpp)
 if(WIN32)
     add_library(VkLayer_utils STATIC ${VALIDATION_LAYER_UTILS_SOURCES})
     target_compile_definitions(VkLayer_utils PUBLIC _CRT_SECURE_NO_WARNINGS)
 else()
     add_library(VkLayer_utils STATIC ${VALIDATION_LAYER_UTILS_SOURCES})
 endif()
 install(TARGETS VkLayer_utils DESTINATION ${CMAKE_INSTALL_LIBDIR})
 set_target_properties(VkLayer_utils PROPERTIES LINKER_LANGUAGE CXX)
 add_dependencies(VkLayer_utils generate_helper_files)
 target_include_directories(VkLayer_utils
                            PUBLIC
                            ${VulkanHeaders_INCLUDE_DIR}
                            ${CMAKE_CURRENT_BINARY_DIR}
                            ${CMAKE_CURRENT_BINARY_DIR}/layers
                            ${PROJECT_BINARY_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)
     set_target_properties(uninstall PROPERTIES FOLDER ${LAYERS_HELPER_FOLDER})
 endif()

 add_definitions(-DAPI_NAME="${API_NAME}")

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

 if(BUILD_LAYERS OR BUILD_LAYER_SUPPORT_FILES)
     add_subdirectory(layers)
 endif()
	# ~~~
	# Copyright (c) 2014-2018 Valve Corporation
	# Copyright (c) 2014-2018 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_minimum_required(VERSION 2.8.11)

	# This must come before the project command.
	set(CMAKE_OSX_DEPLOYMENT_TARGET "10.12" CACHE STRING "Minimum OS X deployment version")

	project(Vulkan-ValidationLayers)
	# set (CMAKE_VERBOSE_MAKEFILE 1)

	# The API_NAME allows renaming builds to avoid conflicts with installed SDKs. The MAJOR number of the version we're building, used
	# in naming <api-name>-<major>.dll (and other files).
	set(API_NAME "Vulkan" CACHE STRING "API name to use when building")
	set(MAJOR "1")
	string(TOLOWER ${API_NAME} API_LOWERCASE)

	set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake")

	find_package(PythonInterp 3 REQUIRED)

	find_package(VulkanHeaders)

	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(CCACHE_FOUND)
	endif()

	set(CMAKE_POSITION_INDEPENDENT_CODE ON)

	include(GNUInstallDirs)
	# Set a better default install location for Windows only if the user did not provide one.
	if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT AND WIN32)
	set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install" CACHE PATH "default install path" FORCE)
	endif()

	if(APPLE)
	# CMake versions 3 or later need CMAKE_MACOSX_RPATH defined. This avoids the CMP0042 policy message.
	set(CMAKE_MACOSX_RPATH 1)
	# The "install" target for MacOS fixes up bundles in place.
	set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR})
	endif()

	# Enable IDE GUI folders
	set_property(GLOBAL PROPERTY USE_FOLDERS ON)
	# "Helper" targets that don't have interesting source code should set their FOLDER property to this
	set(LAYERS_HELPER_FOLDER "Helper Targets")

	if(CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Darwin")
	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."
	)
	endif()

	if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
	include(FindPkgConfig)
	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_MIR_SUPPORT "Build Mir WSI support" OFF)
	set(DEMOS_WSI_SELECTION "XCB" CACHE STRING "Select WSI target for demos (XCB, XLIB, WAYLAND, MIR, DISPLAY)")

	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(${WAYLAND_CLIENT_INCLUDE_DIR})
	endif()

	if(BUILD_WSI_MIR_SUPPORT)
	find_package(Mir REQUIRED)
	endif()
	endif()

	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 AND NOT (CMAKE_CXX_COMPILER_VERSION LESS 7.1))
	set(COMMON_COMPILE_FLAGS "${COMMON_COMPILE_FLAGS} -Wimplicit-fallthrough=0")
	endif()

	if(APPLE)
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COMMON_COMPILE_FLAGS}")
	else()
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 ${COMMON_COMPILE_FLAGS}")
	endif()
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMMON_COMPILE_FLAGS} -std=c++11 -fno-rtti")
	if(UNIX)
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden")
	endif()
	endif()

	if(WIN32)
	# Treat warnings as errors
	add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/WX>")
	# Disable RTTI
	add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/GR->")
	# Warn about nested declarations
	add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/w34456>")
	# Warn about potentially uninitialized variables
	add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/w34701>")
	add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/w34703>")
	# Warn about different indirection types.
	add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/w34057>")
	# Warn about signed/unsigned mismatch.
	add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/w34245>")
	endif()

	if(IS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/external/googletest)
	option(BUILD_TESTS "Build tests" ON)
	else()
	option(BUILD_TESTS "Build tests" OFF)
	endif()
	option(INSTALL_TESTS "Install tests" OFF)
	option(BUILD_LAYERS "Build layers" ON)
	option(BUILD_LAYER_SUPPORT_FILES "Generate layer files" OFF) # For generating files when not building layers

	set(GLSLANG_INSTALL_DIR "GLSLANG-NOTFOUND" CACHE PATH "Absolute path to a glslang install directory")
	if(NOT GLSLANG_INSTALL_DIR AND NOT DEFINED ENV{GLSLANG_INSTALL_DIR})
	message(FATAL_ERROR "Must define location of glslang binaries -- see BUILD.md")
	endif()

	# Cmake command line option overrides environment variable
	if(NOT GLSLANG_INSTALL_DIR)
	set(GLSLANG_INSTALL_DIR $ENV{GLSLANG_INSTALL_DIR})
	endif()
	message(STATUS "Using glslang install located at ${GLSLANG_INSTALL_DIR}")
	set(SPIRV_TOOLS_BINARY_ROOT "${GLSLANG_INSTALL_DIR}/lib"
	CACHE PATH "User defined path to the SPIRV-Tools binaries for this project")
	set(SPIRV_TOOLS_OPT_BINARY_ROOT "${GLSLANG_INSTALL_DIR}/lib"
	CACHE PATH "User defined path to the SPIRV-Tools-opt binaries for this project")
	set(GLSLANG_SPIRV_INCLUDE_DIR "${GLSLANG_INSTALL_DIR}/include" CACHE PATH "Path to glslang spirv headers")
	set(SPIRV_TOOLS_INCLUDE_DIR "${GLSLANG_INSTALL_DIR}/include" CACHE PATH "Path to spirv tools headers")
	set(GLSLANG_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")
	set(GLSLANG_DEBUG_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")
	set(SPIRV_TOOLS_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")
	set(SPIRV_TOOLS_DEBUG_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")
	set(SPIRV_TOOLS_OPT_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")
	set(SPIRV_TOOLS_OPT_DEBUG_SEARCH_PATH "${GLSLANG_INSTALL_DIR}/lib")

	find_library(GLSLANG_LIB NAMES glslang HINTS ${GLSLANG_SEARCH_PATH})

	find_library(OGLCompiler_LIB NAMES OGLCompiler HINTS ${GLSLANG_SEARCH_PATH})

	find_library(OSDependent_LIB NAMES OSDependent HINTS ${GLSLANG_SEARCH_PATH})

	find_library(HLSL_LIB NAMES HLSL HINTS ${GLSLANG_SEARCH_PATH})

	find_library(SPIRV_LIB NAMES SPIRV HINTS ${GLSLANG_SEARCH_PATH})

	find_library(SPIRV_REMAPPER_LIB NAMES SPVRemapper HINTS ${GLSLANG_SEARCH_PATH})

	find_library(SPIRV_TOOLS_LIB NAMES SPIRV-Tools HINTS ${SPIRV_TOOLS_SEARCH_PATH})

	find_library(SPIRV_TOOLS_OPT_LIB NAMES SPIRV-Tools-opt HINTS ${SPIRV_TOOLS_OPT_SEARCH_PATH})

	if(WIN32)
	add_library(glslang STATIC IMPORTED)
	add_library(OGLCompiler STATIC IMPORTED)
	add_library(OSDependent STATIC IMPORTED)
	add_library(HLSL STATIC IMPORTED)
	add_library(SPIRV STATIC IMPORTED)
	add_library(SPVRemapper STATIC IMPORTED)
	add_library(Loader STATIC IMPORTED)
	add_library(SPIRV-Tools-opt STATIC IMPORTED)
	add_library(SPIRV-Tools STATIC IMPORTED)

	find_library(GLSLANG_DLIB NAMES glslangd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
	find_library(OGLCompiler_DLIB NAMES OGLCompilerd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
	find_library(OSDependent_DLIB NAMES OSDependentd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
	find_library(HLSL_DLIB NAMES HLSLd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
	find_library(SPIRV_DLIB NAMES SPIRVd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
	find_library(SPIRV_REMAPPER_DLIB NAMES SPVRemapperd HINTS ${GLSLANG_DEBUG_SEARCH_PATH})
	find_library(SPIRV_TOOLS_DLIB NAMES SPIRV-Toolsd HINTS ${SPIRV_TOOLS_DEBUG_SEARCH_PATH})
	find_library(SPIRV_TOOLS_OPT_DLIB NAMES SPIRV-Tools-optd HINTS ${SPIRV_TOOLS_OPT_DEBUG_SEARCH_PATH})
	set_target_properties(glslang PROPERTIES IMPORTED_LOCATION "${GLSLANG_LIB}" IMPORTED_LOCATION_DEBUG "${GLSLANG_DLIB}")
	set_target_properties(
	OGLCompiler PROPERTIES IMPORTED_LOCATION "${OGLCompiler_LIB}" IMPORTED_LOCATION_DEBUG "${OGLCompiler_DLIB}")
	set_target_properties(
	OSDependent PROPERTIES IMPORTED_LOCATION "${OSDependent_LIB}" IMPORTED_LOCATION_DEBUG "${OSDependent_DLIB}")
	set_target_properties(HLSL PROPERTIES IMPORTED_LOCATION "${HLSL_LIB}" IMPORTED_LOCATION_DEBUG "${HLSL_DLIB}")
	set_target_properties(SPIRV PROPERTIES IMPORTED_LOCATION "${SPIRV_LIB}" IMPORTED_LOCATION_DEBUG "${SPIRV_DLIB}")
	set_target_properties(
	SPVRemapper PROPERTIES IMPORTED_LOCATION "${SPIRV_REMAPPER_LIB}" IMPORTED_LOCATION_DEBUG "${SPIRV_REMAPPER_DLIB}")
	set_target_properties(
	SPIRV-Tools PROPERTIES IMPORTED_LOCATION "${SPIRV_TOOLS_LIB}" IMPORTED_LOCATION_DEBUG "${SPIRV_TOOLS_DLIB}")
	set_target_properties(
	SPIRV-Tools-opt PROPERTIES IMPORTED_LOCATION "${SPIRV_TOOLS_OPT_LIB}" IMPORTED_LOCATION_DEBUG "${SPIRV_TOOLS_OPT_DLIB}")
	endif()

	if(WIN32)
	set(SPIRV_TOOLS_LIBRARIES SPIRV-Tools-opt SPIRV-Tools)
	set(GLSLANG_LIBRARIES glslang OGLCompiler OSDependent HLSL SPIRV SPVRemapper ${SPIRV_TOOLS_LIBRARIES})
	else()
	set(SPIRV_TOOLS_LIBRARIES ${SPIRV_TOOLS_OPT_LIB} ${SPIRV_TOOLS_LIB})
	set(GLSLANG_LIBRARIES
	${GLSLANG_LIB}
	${OGLCompiler_LIB}
	${OSDependent_LIB}
	${HLSL_LIB}
	${SPIRV_LIB}
	${SPIRV_REMAPPER_LIB}
	${SPIRV_TOOLS_LIBRARIES})
	endif()

	set(PYTHON_CMD ${PYTHON_EXECUTABLE})

	if(NOT WIN32)
	add_definitions(-DFALLBACK_CONFIG_DIRS="${FALLBACK_CONFIG_DIRS}")
	add_definitions(-DFALLBACK_DATA_DIRS="${FALLBACK_DATA_DIRS}")
	add_definitions(-DSYSCONFDIR="${CMAKE_INSTALL_FULL_SYSCONFDIR}")

	# Make sure /etc is searched by the loader
	if(NOT (CMAKE_INSTALL_FULL_SYSCONFDIR STREQUAL "/etc"))
	add_definitions(-DEXTRASYSCONFDIR="/etc")
	endif()
	endif()

	# Generate dependent helper files
	set(SCRIPTS_DIR "${PROJECT_SOURCE_DIR}/scripts")
	# Define macro used for building vkxml generated files
	macro(run_vk_xml_generate dependency output)
	add_custom_command(OUTPUT ${output}
	COMMAND ${PYTHON_CMD} ${SCRIPTS_DIR}/lvl_genvk.py -registry ${VulkanRegistry_DIR}/vk.xml -scripts
	${VulkanRegistry_DIR} ${output}
	DEPENDS ${VulkanRegistry_DIR}/vk.xml
	${VulkanRegistry_DIR}/generator.py
	${SCRIPTS_DIR}/${dependency}
	${SCRIPTS_DIR}/lvl_genvk.py
	${VulkanRegistry_DIR}/reg.py)
	endmacro()
	add_custom_target(generate_helper_files
	DEPENDS vk_enum_string_helper.h
	vk_safe_struct.h
	vk_safe_struct.cpp
	vk_object_types.h
	vk_layer_dispatch_table.h
	vk_dispatch_table_helper.h
	vk_extension_helper.h
	vk_typemap_helper.h)
	set_target_properties(generate_helper_files PROPERTIES FOLDER ${LAYERS_HELPER_FOLDER})
	# Rules to build generated helper files
	run_vk_xml_generate(loader_extension_generator.py vk_layer_dispatch_table.h)
	run_vk_xml_generate(dispatch_table_helper_generator.py vk_dispatch_table_helper.h)
	run_vk_xml_generate(helper_file_generator.py vk_safe_struct.h)
	run_vk_xml_generate(helper_file_generator.py vk_safe_struct.cpp)
	run_vk_xml_generate(helper_file_generator.py vk_enum_string_helper.h)
	run_vk_xml_generate(helper_file_generator.py vk_object_types.h)
	run_vk_xml_generate(helper_file_generator.py vk_extension_helper.h)
	run_vk_xml_generate(helper_file_generator.py vk_typemap_helper.h)

	# ~~~
	# Layer Utils Library.
	# For Windows, we use a static lib because the Windows loader has a fairly restrictive loader search
	# path that can't be easily modified to point it to the same directory that contains the layers.
	# TODO: This should not be a library -- in future, include files directly in layers.
	# ~~~
	set(VALIDATION_LAYER_UTILS_SOURCES
	layers/vk_layer_config.cpp
	layers/vk_layer_extension_utils.cpp
	layers/vk_layer_utils.cpp
	layers/vk_format_utils.cpp)
	if(WIN32)
	add_library(VkLayer_utils STATIC ${VALIDATION_LAYER_UTILS_SOURCES})
	target_compile_definitions(VkLayer_utils PUBLIC _CRT_SECURE_NO_WARNINGS)
	else()
	add_library(VkLayer_utils STATIC ${VALIDATION_LAYER_UTILS_SOURCES})
	endif()
	install(TARGETS VkLayer_utils DESTINATION ${CMAKE_INSTALL_LIBDIR})
	set_target_properties(VkLayer_utils PROPERTIES LINKER_LANGUAGE CXX)
	add_dependencies(VkLayer_utils generate_helper_files)
	target_include_directories(VkLayer_utils
	PUBLIC
	${VulkanHeaders_INCLUDE_DIR}
	${CMAKE_CURRENT_BINARY_DIR}
	${CMAKE_CURRENT_BINARY_DIR}/layers
	${PROJECT_BINARY_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)
	set_target_properties(uninstall PROPERTIES FOLDER ${LAYERS_HELPER_FOLDER})
	endif()

	add_definitions(-DAPI_NAME="${API_NAME}")

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

	if(BUILD_LAYERS OR BUILD_LAYER_SUPPORT_FILES)
	add_subdirectory(layers)
	endif()