CMakeLists.txt - platform/external/vulkan-tools - 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 project initialization ---------------------------------------------------------------------------------------------------
 # This section contains pre-project() initialization, and ends with the project() command.

 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-Tools)

 # find_package(), include() and global project settings --------------------------------------------------------------------------

 find_package(PythonInterp 3 QUIET)

 # 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.

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

 option(BUILD_CUBE "Build cube" ON)
 option(BUILD_VULKANINFO "Build vulkaninfo" ON)
 option(BUILD_ICD "Build icd" ON)
 # Installing the Mock ICD to system directories is probably not desired since this ICD is not a very complete implementation.
 # Require the user to ask that it be installed if they really want it.
 option(INSTALL_ICD "Install icd" OFF)

 # 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(TOOLS_HELPER_FOLDER "Helper Targets")

 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()

 # ~~~
 # Find Vulkan Headers and Loader
 # Search order:
 #  User-supplied CMAKE_PREFIX_PATH containing paths to the header and/or loader install dirs
 #  CMake options VULKAN_HEADERS_INSTALL_DIR and/or VULKAN_LOADER_INSTALL_DIR
 #  Env vars VULKAN_HEADERS_INSTALL_DIR and/or VULKAN_LOADER_INSTALL_DIR
 #  If on MacOS
 #   CMake option MOTLENVK_REPO_ROOT
 #   Env vars MOLTENVK_REPO_ROOT
 #  Fallback to FindVulkan operation using SDK install or system installed components.
 # ~~~
 set(VULKAN_HEADERS_INSTALL_DIR "HEADERS-NOTFOUND" CACHE PATH "Absolute path to a Vulkan-Headers install directory")
 set(VULKAN_LOADER_INSTALL_DIR "LOADER-NOTFOUND" CACHE PATH "Absolute path to a Vulkan-Loader install directory")
 if(WIN32 AND "${VULKAN_LOADER_INSTALL_DIR}" STREQUAL "LOADER-NOTFOUND")
     if(CMAKE_CL_64)
         set(VULKAN_LOADER_INSTALL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/external/x64")
     else()
         set(VULKAN_LOADER_INSTALL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/external/x86")
     endif()
 endif()
 set(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH};${VULKAN_HEADERS_INSTALL_DIR};${VULKAN_LOADER_INSTALL_DIR};
     $ENV{VULKAN_HEADERS_INSTALL_DIR};$ENV{VULKAN_LOADER_INSTALL_DIR})

 if(APPLE)
     set(MOLTENVK_REPO_ROOT "MOLTENVK-NOTFOUND" CACHE PATH "Absolute path to a MoltenVK repo directory")
     if(NOT MOLTENVK_REPO_ROOT AND NOT DEFINED ENV{MOLTENVK_REPO_ROOT})
         message(FATAL_ERROR "Must define location of MoltenVK repo -- see BUILD.md")
     endif()

     if(NOT MOLTENVK_REPO_ROOT)
         set(MOLTENVK_REPO_ROOT $ENV{MOLTENVK_REPO_ROOT})
     endif()
     message(STATUS "Using MoltenVK repo location at ${MOLTENVK_REPO_ROOT}")
 endif()
 message(STATUS "Using find_package to locate Vulkan")
 find_package(Vulkan)
 find_package(VulkanHeaders)
 get_filename_component(Vulkan_LIBRARY_DIR ${Vulkan_LIBRARY} DIRECTORY)
 message(STATUS "Vulkan FOUND = ${Vulkan_FOUND}")
 message(STATUS "Vulkan Lib Dir = ${Vulkan_LIBRARY_DIR}")
 message(STATUS "Vulkan Lib = ${Vulkan_LIBRARY}")
 message(STATUS "Vulkan Headers Include = ${VulkanHeaders_INCLUDE_DIR}")
 message(STATUS "Vulkan Headers Registry = ${VulkanRegistry_DIR}")

 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()

 # 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 ${TOOLS_HELPER_FOLDER})
 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(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()

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

 if(APPLE)
     include(mac_common.cmake)
 endif()

 if(BUILD_CUBE)
     add_subdirectory(cube)
 endif()

 if(BUILD_VULKANINFO)
     add_subdirectory(vulkaninfo)
 endif()

 if(BUILD_ICD)
     add_subdirectory(icd)
 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 project initialization ---------------------------------------------------------------------------------------------------
	# This section contains pre-project() initialization, and ends with the project() command.

	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-Tools)

	# find_package(), include() and global project settings --------------------------------------------------------------------------

	find_package(PythonInterp 3 QUIET)

	# 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.

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

	option(BUILD_CUBE "Build cube" ON)
	option(BUILD_VULKANINFO "Build vulkaninfo" ON)
	option(BUILD_ICD "Build icd" ON)
	# Installing the Mock ICD to system directories is probably not desired since this ICD is not a very complete implementation.
	# Require the user to ask that it be installed if they really want it.
	option(INSTALL_ICD "Install icd" OFF)

	# 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(TOOLS_HELPER_FOLDER "Helper Targets")

	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()

	# ~~~
	# Find Vulkan Headers and Loader
	# Search order:
	# User-supplied CMAKE_PREFIX_PATH containing paths to the header and/or loader install dirs
	# CMake options VULKAN_HEADERS_INSTALL_DIR and/or VULKAN_LOADER_INSTALL_DIR
	# Env vars VULKAN_HEADERS_INSTALL_DIR and/or VULKAN_LOADER_INSTALL_DIR
	# If on MacOS
	# CMake option MOTLENVK_REPO_ROOT
	# Env vars MOLTENVK_REPO_ROOT
	# Fallback to FindVulkan operation using SDK install or system installed components.
	# ~~~
	set(VULKAN_HEADERS_INSTALL_DIR "HEADERS-NOTFOUND" CACHE PATH "Absolute path to a Vulkan-Headers install directory")
	set(VULKAN_LOADER_INSTALL_DIR "LOADER-NOTFOUND" CACHE PATH "Absolute path to a Vulkan-Loader install directory")
	if(WIN32 AND "${VULKAN_LOADER_INSTALL_DIR}" STREQUAL "LOADER-NOTFOUND")
	if(CMAKE_CL_64)
	set(VULKAN_LOADER_INSTALL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/external/x64")
	else()
	set(VULKAN_LOADER_INSTALL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/external/x86")
	endif()
	endif()
	set(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH};${VULKAN_HEADERS_INSTALL_DIR};${VULKAN_LOADER_INSTALL_DIR};
	$ENV{VULKAN_HEADERS_INSTALL_DIR};$ENV{VULKAN_LOADER_INSTALL_DIR})

	if(APPLE)
	set(MOLTENVK_REPO_ROOT "MOLTENVK-NOTFOUND" CACHE PATH "Absolute path to a MoltenVK repo directory")
	if(NOT MOLTENVK_REPO_ROOT AND NOT DEFINED ENV{MOLTENVK_REPO_ROOT})
	message(FATAL_ERROR "Must define location of MoltenVK repo -- see BUILD.md")
	endif()

	if(NOT MOLTENVK_REPO_ROOT)
	set(MOLTENVK_REPO_ROOT $ENV{MOLTENVK_REPO_ROOT})
	endif()
	message(STATUS "Using MoltenVK repo location at ${MOLTENVK_REPO_ROOT}")
	endif()
	message(STATUS "Using find_package to locate Vulkan")
	find_package(Vulkan)
	find_package(VulkanHeaders)
	get_filename_component(Vulkan_LIBRARY_DIR ${Vulkan_LIBRARY} DIRECTORY)
	message(STATUS "Vulkan FOUND = ${Vulkan_FOUND}")
	message(STATUS "Vulkan Lib Dir = ${Vulkan_LIBRARY_DIR}")
	message(STATUS "Vulkan Lib = ${Vulkan_LIBRARY}")
	message(STATUS "Vulkan Headers Include = ${VulkanHeaders_INCLUDE_DIR}")
	message(STATUS "Vulkan Headers Registry = ${VulkanRegistry_DIR}")

	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()

	# 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 ${TOOLS_HELPER_FOLDER})
	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(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()

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

	if(APPLE)
	include(mac_common.cmake)
	endif()

	if(BUILD_CUBE)
	add_subdirectory(cube)
	endif()

	if(BUILD_VULKANINFO)
	add_subdirectory(vulkaninfo)
	endif()

	if(BUILD_ICD)
	add_subdirectory(icd)
	endif()