third_party_vulkan-loader/CMakeLists.txt

# ~~~
# 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-Loader)
set (CMAKE_VERBOSE_MAKEFILE 0)

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

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()

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)
        set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ccache)
    endif(CCACHE_FOUND)
endif()

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(LOADER_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)

    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(WIN32)
    option(ENABLE_WIN10_ONECORE "Link the loader with OneCore umbrella libraries" OFF)
    option(ENABLE_STATIC_LOADER "Build the loader as a static library" OFF)
endif()

set(SCRIPTS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/scripts")

# Add location of Vulkan header files to include search path
include_directories(${VulkanHeaders_INCLUDE_DIRS})

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()

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

set (PYTHON_CMD ${PYTHON_EXECUTABLE})

# 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}/loader_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}/loader_genvk.py ${VulkanRegistry_DIR}/reg.py
    )
endmacro()

# Custom target for generated vulkan helper file dependencies
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 ${LOADER_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)

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()

install(FILES "${CMAKE_CURRENT_BINARY_DIR}/vk_layer_dispatch_table.h" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/vulkan")

# 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()

add_definitions(-DAPI_NAME="Vulkan")

if(BUILD_LOADER)
    add_subdirectory(loader)
endif()

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