CMakeLists.txt - external/github.com/KhronosGroup/SPIRV-Tools - Git at Google

 # Copyright (c) 2015-2016 The Khronos Group 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 2.8.12)
 if (POLICY CMP0048)
   cmake_policy(SET CMP0048 NEW)
 endif()
 if (POLICY CMP0054)
   # Avoid dereferencing variables or interpret keywords that have been
   # quoted or bracketed.
   # https://cmake.org/cmake/help/v3.1/policy/CMP0054.html
   cmake_policy(SET CMP0054 NEW)
 endif()
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)

 project(spirv-tools)
 enable_testing()
 set(SPIRV_TOOLS "SPIRV-Tools")

 include(GNUInstallDirs)

 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 set(CMAKE_CXX_STANDARD 11)

 option(ENABLE_RTTI "Enables RTTI" OFF)
 option(SPIRV_ALLOW_TIMERS "Allow timers via clock_gettime on supported platforms" ON)

 if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
   add_definitions(-DSPIRV_LINUX)
   set(SPIRV_TIMER_ENABLED ${SPIRV_ALLOW_TIMERS})
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Emscripten")
     add_definitions(-DSPIRV_EMSCRIPTEN)
 elseif("${CMAKE_SYSTEM_NAME}" MATCHES "Windows")
   add_definitions(-DSPIRV_WINDOWS)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "CYGWIN")
   add_definitions(-DSPIRV_WINDOWS)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
   add_definitions(-DSPIRV_MAC)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "iOS")
   add_definitions(-DSPIRV_IOS)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "tvOS")
   add_definitions(-DSPIRV_TVOS)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Android")
   add_definitions(-DSPIRV_ANDROID)
   set(SPIRV_TIMER_ENABLED ${SPIRV_ALLOW_TIMERS})
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD")
   add_definitions(-DSPIRV_FREEBSD)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia")
   add_definitions(-DSPIRV_FUCHSIA)
 else()
   message(FATAL_ERROR "Your platform '${CMAKE_SYSTEM_NAME}' is not supported!")
 endif()

 if (${SPIRV_TIMER_ENABLED})
   add_definitions(-DSPIRV_TIMER_ENABLED)
 endif()

 if ("${CMAKE_BUILD_TYPE}" STREQUAL "")
   message(STATUS "No build type selected, default to Debug")
   set(CMAKE_BUILD_TYPE "Debug")
 endif()

 option(SKIP_SPIRV_TOOLS_INSTALL "Skip installation" ${SKIP_SPIRV_TOOLS_INSTALL})
 if(NOT ${SKIP_SPIRV_TOOLS_INSTALL})
   set(ENABLE_SPIRV_TOOLS_INSTALL ON)
 endif()

 option(SPIRV_BUILD_COMPRESSION "Build SPIR-V compressing codec" OFF)
 if(SPIRV_BUILD_COMPRESSION)
   message(FATAL_ERROR "SPIR-V compression codec has been removed from SPIR-V tools. "
           "Please remove SPIRV_BUILD_COMPRESSION from your build options.")
 endif(SPIRV_BUILD_COMPRESSION)

 option(SPIRV_BUILD_FUZZER "Build spirv-fuzz" OFF)

 set(SPIRV_LIB_FUZZING_ENGINE_LINK_OPTIONS "" CACHE STRING "Used by OSS-Fuzz to control, via link options, which fuzzing engine should be used")

 option(SPIRV_BUILD_LIBFUZZER_TARGETS "Build libFuzzer targets" OFF)

 option(SPIRV_WERROR "Enable error on warning" ON)
 if(("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU") OR (("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") AND (NOT CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC")))
   set(COMPILER_IS_LIKE_GNU TRUE)
 endif()
 if(${COMPILER_IS_LIKE_GNU})
   set(SPIRV_WARNINGS -Wall -Wextra -Wnon-virtual-dtor -Wno-missing-field-initializers)

   if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
     set(SPIRV_WARNINGS ${SPIRV_WARNINGS} -Wno-self-assign)
   endif()

   option(SPIRV_WARN_EVERYTHING "Enable -Weverything" ${SPIRV_WARN_EVERYTHING})
   if(${SPIRV_WARN_EVERYTHING})
     if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
       set(SPIRV_WARNINGS ${SPIRV_WARNINGS}
         -Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-padded)
     elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
       set(SPIRV_WARNINGS ${SPIRV_WARNINGS} -Wpedantic -pedantic-errors)
     else()
       message(STATUS "Unknown compiler ${CMAKE_CXX_COMPILER_ID}, "
                      "so SPIRV_WARN_EVERYTHING has no effect")
     endif()
   endif()

   if(${SPIRV_WERROR})
     set(SPIRV_WARNINGS ${SPIRV_WARNINGS} -Werror)
   endif()
 elseif(MSVC)
   set(SPIRV_WARNINGS -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS /wd4800 /wd4819)

   if(${SPIRV_WERROR})
     set(SPIRV_WARNINGS ${SPIRV_WARNINGS} /WX)
   endif()
 endif()

 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/)

 option(SPIRV_COLOR_TERMINAL "Enable color terminal output" ON)
 if(${SPIRV_COLOR_TERMINAL})
   add_definitions(-DSPIRV_COLOR_TERMINAL)
 endif()

 option(SPIRV_LOG_DEBUG "Enable excessive debug output" OFF)
 if(${SPIRV_LOG_DEBUG})
   add_definitions(-DSPIRV_LOG_DEBUG)
 endif()

 if (DEFINED SPIRV_TOOLS_EXTRA_DEFINITIONS)
   add_definitions(${SPIRV_TOOLS_EXTRA_DEFINITIONS})
 endif()

 # Library build setting definitions:
 #
 # * SPIRV_TOOLS_BUILD_STATIC - ON or OFF - Defaults to ON.
 #   If enabled the following targets will be created:
 #     ${SPIRV_TOOLS}-static - STATIC library.
 #                             Has full public symbol visibility.
 #     ${SPIRV_TOOLS}-shared - SHARED library.
 #                             Has default-hidden symbol visibility.
 #     ${SPIRV_TOOLS}        - will alias to one of above, based on BUILD_SHARED_LIBS.
 #   If disabled the following targets will be created:
 #     ${SPIRV_TOOLS}        - either STATIC or SHARED based on SPIRV_TOOLS_LIBRARY_TYPE.
 #                             Has full public symbol visibility.
 #     ${SPIRV_TOOLS}-shared - SHARED library.
 #                             Has default-hidden symbol visibility.
 #
 # * SPIRV_TOOLS_LIBRARY_TYPE - SHARED or STATIC.
 #   Specifies the library type used for building SPIRV-Tools libraries.
 #   Defaults to SHARED when BUILD_SHARED_LIBS=1, otherwise STATIC.
 #
 # * SPIRV_TOOLS_FULL_VISIBILITY - "${SPIRV_TOOLS}-static" or "${SPIRV_TOOLS}"
 #   Evaluates to the SPIRV_TOOLS target library name that has no hidden symbols.
 #   This is used by internal targets for accessing symbols that are non-public.
 #   Note this target provides no API stability guarantees.
 #
 # Ideally, all of these will go away - see https://github.com/KhronosGroup/SPIRV-Tools/issues/3909.
 option(ENABLE_EXCEPTIONS_ON_MSVC "Build SPIRV-TOOLS with c++ exceptions enabled in MSVC" ON)
 option(SPIRV_TOOLS_BUILD_STATIC "Build ${SPIRV_TOOLS}-static target. ${SPIRV_TOOLS} will alias to ${SPIRV_TOOLS}-static or ${SPIRV_TOOLS}-shared based on BUILD_SHARED_LIBS" ON)
 if(SPIRV_TOOLS_BUILD_STATIC)
   set(SPIRV_TOOLS_FULL_VISIBILITY ${SPIRV_TOOLS}-static)
   set(SPIRV_TOOLS_LIBRARY_TYPE "STATIC")
 else(SPIRV_TOOLS_BUILD_STATIC)
   set(SPIRV_TOOLS_FULL_VISIBILITY ${SPIRV_TOOLS})
   if (NOT DEFINED SPIRV_TOOLS_LIBRARY_TYPE)
       if(BUILD_SHARED_LIBS)
         set(SPIRV_TOOLS_LIBRARY_TYPE "SHARED")
       else()
         set(SPIRV_TOOLS_LIBRARY_TYPE "STATIC")
       endif()
   endif()
 endif(SPIRV_TOOLS_BUILD_STATIC)

 function(spvtools_default_compile_options TARGET)
   target_compile_options(${TARGET} PRIVATE ${SPIRV_WARNINGS})

   if (${COMPILER_IS_LIKE_GNU})
     target_compile_options(${TARGET} PRIVATE -std=c++11 -fno-exceptions)
     target_compile_options(${TARGET} PRIVATE
       -Wall -Wextra -Wno-long-long -Wshadow -Wundef -Wconversion
       -Wno-sign-conversion)

     if(NOT ENABLE_RTTI)
         add_compile_options(-fno-rtti)
     endif()
     # For good call stacks in profiles, keep the frame pointers.
     if(NOT "${SPIRV_PERF}" STREQUAL "")
       target_compile_options(${TARGET} PRIVATE -fno-omit-frame-pointer)
     endif()
     if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
       set(SPIRV_USE_SANITIZER "" CACHE STRING
         "Use the clang sanitizer [address|memory|thread|...]")
       if(NOT "${SPIRV_USE_SANITIZER}" STREQUAL "")
         target_compile_options(${TARGET} PRIVATE
           -fsanitize=${SPIRV_USE_SANITIZER})
         set_target_properties(${TARGET} PROPERTIES
           LINK_FLAGS -fsanitize=${SPIRV_USE_SANITIZER})
       endif()
       target_compile_options(${TARGET} PRIVATE
          -ftemplate-depth=1024)
     else()
       target_compile_options(${TARGET} PRIVATE
          -Wno-missing-field-initializers)
     endif()
   endif()

   if (MSVC)
     # Specify /EHs for exception handling. This makes using SPIRV-Tools as
     # dependencies in other projects easier.
     if(ENABLE_EXCEPTIONS_ON_MSVC)
       target_compile_options(${TARGET} PRIVATE /EHs)
     endif()
   endif()

   # For MinGW cross compile, statically link to the C++ runtime.
   # But it still depends on MSVCRT.dll.
   if (${CMAKE_SYSTEM_NAME} MATCHES "Windows")
     if (${CMAKE_CXX_COMPILER_ID} MATCHES "GNU")
       set_target_properties(${TARGET} PROPERTIES
         LINK_FLAGS -static -static-libgcc -static-libstdc++)
     endif()
   endif()
 endfunction()

 if(NOT COMMAND find_host_package)
   macro(find_host_package)
     find_package(${ARGN})
   endmacro()
 endif()
 if(NOT COMMAND find_host_program)
   macro(find_host_program)
     find_program(${ARGN})
   endmacro()
 endif()

 # Tests require Python3
 find_host_package(PythonInterp 3 REQUIRED)

 # Check for symbol exports on Linux.
 # At the moment, this check will fail on the OSX build machines for the Android NDK.
 # It appears they don't have objdump.
 if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
   macro(spvtools_check_symbol_exports TARGET)
     if (NOT "${SPIRV_SKIP_TESTS}")
       add_test(NAME spirv-tools-symbol-exports-${TARGET}
                COMMAND ${PYTHON_EXECUTABLE}
                ${spirv-tools_SOURCE_DIR}/utils/check_symbol_exports.py "$<TARGET_FILE:${TARGET}>")
     endif()
   endmacro()
 else()
   macro(spvtools_check_symbol_exports TARGET)
     if (NOT "${SPIRV_SKIP_TESTS}")
       message("Skipping symbol exports test for ${TARGET}")
     endif()
   endmacro()
 endif()

 if(ENABLE_SPIRV_TOOLS_INSTALL)
   if(WIN32)
     macro(spvtools_config_package_dir TARGET PATH)
       set(${PATH} ${TARGET}/cmake)
     endmacro()
   else()
     macro(spvtools_config_package_dir TARGET PATH)
       set(${PATH} ${CMAKE_INSTALL_LIBDIR}/cmake/${TARGET})
     endmacro()
   endif()

   macro(spvtools_generate_config_file TARGET)
     file(WRITE ${CMAKE_BINARY_DIR}/${TARGET}Config.cmake
       "include(CMakeFindDependencyMacro)\n"
       "find_dependency(${SPIRV_TOOLS})\n"
       "include(\${CMAKE_CURRENT_LIST_DIR}/${TARGET}Targets.cmake)\n"
       "set(${TARGET}_LIBRARIES ${TARGET})\n"
       "get_target_property(${TARGET}_INCLUDE_DIRS ${TARGET} INTERFACE_INCLUDE_DIRECTORIES)\n")
   endmacro()
 endif()

 # Defaults to OFF if the user didn't set it.
 option(SPIRV_SKIP_EXECUTABLES
   "Skip building the executable and tests along with the library"
   ${SPIRV_SKIP_EXECUTABLES})
 option(SPIRV_SKIP_TESTS
   "Skip building tests along with the library" ${SPIRV_SKIP_TESTS})
 if ("${SPIRV_SKIP_EXECUTABLES}")
   set(SPIRV_SKIP_TESTS ON)
 endif()

 # Defaults to ON.  The checks can be time consuming.
 # Turn off if they take too long.
 option(SPIRV_CHECK_CONTEXT "In a debug build, check if the IR context is in a valid state." ON)
 if (${SPIRV_CHECK_CONTEXT})
   add_compile_options($<$<CONFIG:Debug>:-DSPIRV_CHECK_CONTEXT>)
 endif()

 # Precompiled header macro. Parameters are source file list and filename for pch cpp file.
 macro(spvtools_pch SRCS PCHPREFIX)
   if(MSVC AND CMAKE_GENERATOR MATCHES "^Visual Studio" AND NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
     set(PCH_NAME "$(IntDir)\\${PCHPREFIX}.pch")
     # make source files use/depend on PCH_NAME
     set_source_files_properties(${${SRCS}} PROPERTIES COMPILE_FLAGS "/Yu${PCHPREFIX}.h /FI${PCHPREFIX}.h /Fp${PCH_NAME} /Zm300" OBJECT_DEPENDS "${PCH_NAME}")
     # make PCHPREFIX.cpp file compile and generate PCH_NAME
     set_source_files_properties("${PCHPREFIX}.cpp" PROPERTIES COMPILE_FLAGS "/Yc${PCHPREFIX}.h /Fp${PCH_NAME} /Zm300" OBJECT_OUTPUTS "${PCH_NAME}")
     list(APPEND ${SRCS} "${PCHPREFIX}.cpp")
   endif()
 endmacro(spvtools_pch)

 add_subdirectory(external)

 # Warning about extra semi-colons.
 #
 # This is not supported on all compilers/versions. so enabling only
 # for clang, since that works for all versions that our bots run.
 #
 # This is intentionally done after adding the external subdirectory,
 # so we don't enforce this flag on our dependencies, some of which do
 # not pass it.
 #
 # If the minimum version of CMake supported is updated to 3.0 or
 # later, then check_cxx_compiler_flag could be used instead.
 if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
     add_compile_options("-Wextra-semi")
 endif()

 add_subdirectory(source)
 add_subdirectory(tools)

 add_subdirectory(test)
 add_subdirectory(examples)

 if(ENABLE_SPIRV_TOOLS_INSTALL)
   install(
     FILES
       ${CMAKE_CURRENT_SOURCE_DIR}/include/spirv-tools/libspirv.h
       ${CMAKE_CURRENT_SOURCE_DIR}/include/spirv-tools/libspirv.hpp
       ${CMAKE_CURRENT_SOURCE_DIR}/include/spirv-tools/optimizer.hpp
       ${CMAKE_CURRENT_SOURCE_DIR}/include/spirv-tools/linker.hpp
       ${CMAKE_CURRENT_SOURCE_DIR}/include/spirv-tools/instrument.hpp
     DESTINATION
       ${CMAKE_INSTALL_INCLUDEDIR}/spirv-tools/)
 endif(ENABLE_SPIRV_TOOLS_INSTALL)

 if (NOT "${SPIRV_SKIP_TESTS}")
   add_test(NAME spirv-tools-copyrights
            COMMAND ${PYTHON_EXECUTABLE} utils/check_copyright.py
            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
 endif()

 set(SPIRV_LIBRARIES "-lSPIRV-Tools-opt -lSPIRV-Tools -lSPIRV-Tools-link")
 set(SPIRV_SHARED_LIBRARIES "-lSPIRV-Tools-shared")

 # Build pkg-config file
 # Use a first-class target so it's regenerated when relevant files are updated.
 add_custom_target(spirv-tools-pkg-config ALL
         COMMAND ${CMAKE_COMMAND}
                       -DCHANGES_FILE=${CMAKE_CURRENT_SOURCE_DIR}/CHANGES
                       -DTEMPLATE_FILE=${CMAKE_CURRENT_SOURCE_DIR}/cmake/SPIRV-Tools.pc.in
                       -DOUT_FILE=${CMAKE_CURRENT_BINARY_DIR}/SPIRV-Tools.pc
                       -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
                       -DCMAKE_INSTALL_LIBDIR=${CMAKE_INSTALL_LIBDIR}
                       -DCMAKE_INSTALL_INCLUDEDIR=${CMAKE_INSTALL_INCLUDEDIR}
                       -DSPIRV_LIBRARIES=${SPIRV_LIBRARIES}
                       -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/write_pkg_config.cmake
         DEPENDS "CHANGES" "cmake/SPIRV-Tools.pc.in" "cmake/write_pkg_config.cmake")
 add_custom_target(spirv-tools-shared-pkg-config ALL
         COMMAND ${CMAKE_COMMAND}
                       -DCHANGES_FILE=${CMAKE_CURRENT_SOURCE_DIR}/CHANGES
                       -DTEMPLATE_FILE=${CMAKE_CURRENT_SOURCE_DIR}/cmake/SPIRV-Tools-shared.pc.in
                       -DOUT_FILE=${CMAKE_CURRENT_BINARY_DIR}/SPIRV-Tools-shared.pc
                       -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
                       -DCMAKE_INSTALL_LIBDIR=${CMAKE_INSTALL_LIBDIR}
                       -DCMAKE_INSTALL_INCLUDEDIR=${CMAKE_INSTALL_INCLUDEDIR}
                       -DSPIRV_SHARED_LIBRARIES=${SPIRV_SHARED_LIBRARIES}
                       -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/write_pkg_config.cmake
         DEPENDS "CHANGES" "cmake/SPIRV-Tools-shared.pc.in" "cmake/write_pkg_config.cmake")

 # Install pkg-config file
 if (ENABLE_SPIRV_TOOLS_INSTALL)
   install(
     FILES
       ${CMAKE_CURRENT_BINARY_DIR}/SPIRV-Tools.pc
       ${CMAKE_CURRENT_BINARY_DIR}/SPIRV-Tools-shared.pc
     DESTINATION
       ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
 endif()
	# Copyright (c) 2015-2016 The Khronos Group 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 2.8.12)
	if (POLICY CMP0048)
	cmake_policy(SET CMP0048 NEW)
	endif()
	if (POLICY CMP0054)
	# Avoid dereferencing variables or interpret keywords that have been
	# quoted or bracketed.
	# https://cmake.org/cmake/help/v3.1/policy/CMP0054.html
	cmake_policy(SET CMP0054 NEW)
	endif()
	set_property(GLOBAL PROPERTY USE_FOLDERS ON)

	project(spirv-tools)
	enable_testing()
	set(SPIRV_TOOLS "SPIRV-Tools")

	include(GNUInstallDirs)

	set(CMAKE_POSITION_INDEPENDENT_CODE ON)
	set(CMAKE_CXX_STANDARD 11)

	option(ENABLE_RTTI "Enables RTTI" OFF)
	option(SPIRV_ALLOW_TIMERS "Allow timers via clock_gettime on supported platforms" ON)

	if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
	add_definitions(-DSPIRV_LINUX)
	set(SPIRV_TIMER_ENABLED ${SPIRV_ALLOW_TIMERS})
	elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Emscripten")
	add_definitions(-DSPIRV_EMSCRIPTEN)
	elseif("${CMAKE_SYSTEM_NAME}" MATCHES "Windows")
	add_definitions(-DSPIRV_WINDOWS)
	elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "CYGWIN")
	add_definitions(-DSPIRV_WINDOWS)
	elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
	add_definitions(-DSPIRV_MAC)
	elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "iOS")
	add_definitions(-DSPIRV_IOS)
	elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "tvOS")
	add_definitions(-DSPIRV_TVOS)
	elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Android")
	add_definitions(-DSPIRV_ANDROID)
	set(SPIRV_TIMER_ENABLED ${SPIRV_ALLOW_TIMERS})
	elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD")
	add_definitions(-DSPIRV_FREEBSD)
	elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia")
	add_definitions(-DSPIRV_FUCHSIA)
	else()
	message(FATAL_ERROR "Your platform '${CMAKE_SYSTEM_NAME}' is not supported!")
	endif()

	if (${SPIRV_TIMER_ENABLED})
	add_definitions(-DSPIRV_TIMER_ENABLED)
	endif()

	if ("${CMAKE_BUILD_TYPE}" STREQUAL "")
	message(STATUS "No build type selected, default to Debug")
	set(CMAKE_BUILD_TYPE "Debug")
	endif()

	option(SKIP_SPIRV_TOOLS_INSTALL "Skip installation" ${SKIP_SPIRV_TOOLS_INSTALL})
	if(NOT ${SKIP_SPIRV_TOOLS_INSTALL})
	set(ENABLE_SPIRV_TOOLS_INSTALL ON)
	endif()

	option(SPIRV_BUILD_COMPRESSION "Build SPIR-V compressing codec" OFF)
	if(SPIRV_BUILD_COMPRESSION)
	message(FATAL_ERROR "SPIR-V compression codec has been removed from SPIR-V tools. "
	"Please remove SPIRV_BUILD_COMPRESSION from your build options.")
	endif(SPIRV_BUILD_COMPRESSION)

	option(SPIRV_BUILD_FUZZER "Build spirv-fuzz" OFF)

	set(SPIRV_LIB_FUZZING_ENGINE_LINK_OPTIONS "" CACHE STRING "Used by OSS-Fuzz to control, via link options, which fuzzing engine should be used")

	option(SPIRV_BUILD_LIBFUZZER_TARGETS "Build libFuzzer targets" OFF)

	option(SPIRV_WERROR "Enable error on warning" ON)
	if(("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU") OR (("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") AND (NOT CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC")))
	set(COMPILER_IS_LIKE_GNU TRUE)
	endif()
	if(${COMPILER_IS_LIKE_GNU})
	set(SPIRV_WARNINGS -Wall -Wextra -Wnon-virtual-dtor -Wno-missing-field-initializers)

	if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
	set(SPIRV_WARNINGS ${SPIRV_WARNINGS} -Wno-self-assign)
	endif()

	option(SPIRV_WARN_EVERYTHING "Enable -Weverything" ${SPIRV_WARN_EVERYTHING})
	if(${SPIRV_WARN_EVERYTHING})
	if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
	set(SPIRV_WARNINGS ${SPIRV_WARNINGS}
	-Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-padded)
	elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
	set(SPIRV_WARNINGS ${SPIRV_WARNINGS} -Wpedantic -pedantic-errors)
	else()
	message(STATUS "Unknown compiler ${CMAKE_CXX_COMPILER_ID}, "
	"so SPIRV_WARN_EVERYTHING has no effect")
	endif()
	endif()

	if(${SPIRV_WERROR})
	set(SPIRV_WARNINGS ${SPIRV_WARNINGS} -Werror)
	endif()
	elseif(MSVC)
	set(SPIRV_WARNINGS -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS /wd4800 /wd4819)

	if(${SPIRV_WERROR})
	set(SPIRV_WARNINGS ${SPIRV_WARNINGS} /WX)
	endif()
	endif()

	include_directories(${CMAKE_CURRENT_SOURCE_DIR}/)

	option(SPIRV_COLOR_TERMINAL "Enable color terminal output" ON)
	if(${SPIRV_COLOR_TERMINAL})
	add_definitions(-DSPIRV_COLOR_TERMINAL)
	endif()

	option(SPIRV_LOG_DEBUG "Enable excessive debug output" OFF)
	if(${SPIRV_LOG_DEBUG})
	add_definitions(-DSPIRV_LOG_DEBUG)
	endif()

	if (DEFINED SPIRV_TOOLS_EXTRA_DEFINITIONS)
	add_definitions(${SPIRV_TOOLS_EXTRA_DEFINITIONS})
	endif()

	# Library build setting definitions:
	#
	# * SPIRV_TOOLS_BUILD_STATIC - ON or OFF - Defaults to ON.
	# If enabled the following targets will be created:
	# ${SPIRV_TOOLS}-static - STATIC library.
	# Has full public symbol visibility.
	# ${SPIRV_TOOLS}-shared - SHARED library.
	# Has default-hidden symbol visibility.
	# ${SPIRV_TOOLS} - will alias to one of above, based on BUILD_SHARED_LIBS.
	# If disabled the following targets will be created:
	# ${SPIRV_TOOLS} - either STATIC or SHARED based on SPIRV_TOOLS_LIBRARY_TYPE.
	# Has full public symbol visibility.
	# ${SPIRV_TOOLS}-shared - SHARED library.
	# Has default-hidden symbol visibility.
	#
	# * SPIRV_TOOLS_LIBRARY_TYPE - SHARED or STATIC.
	# Specifies the library type used for building SPIRV-Tools libraries.
	# Defaults to SHARED when BUILD_SHARED_LIBS=1, otherwise STATIC.
	#
	# * SPIRV_TOOLS_FULL_VISIBILITY - "${SPIRV_TOOLS}-static" or "${SPIRV_TOOLS}"
	# Evaluates to the SPIRV_TOOLS target library name that has no hidden symbols.
	# This is used by internal targets for accessing symbols that are non-public.
	# Note this target provides no API stability guarantees.
	#
	# Ideally, all of these will go away - see https://github.com/KhronosGroup/SPIRV-Tools/issues/3909.
	option(ENABLE_EXCEPTIONS_ON_MSVC "Build SPIRV-TOOLS with c++ exceptions enabled in MSVC" ON)
	option(SPIRV_TOOLS_BUILD_STATIC "Build ${SPIRV_TOOLS}-static target. ${SPIRV_TOOLS} will alias to ${SPIRV_TOOLS}-static or ${SPIRV_TOOLS}-shared based on BUILD_SHARED_LIBS" ON)
	if(SPIRV_TOOLS_BUILD_STATIC)
	set(SPIRV_TOOLS_FULL_VISIBILITY ${SPIRV_TOOLS}-static)
	set(SPIRV_TOOLS_LIBRARY_TYPE "STATIC")
	else(SPIRV_TOOLS_BUILD_STATIC)
	set(SPIRV_TOOLS_FULL_VISIBILITY ${SPIRV_TOOLS})
	if (NOT DEFINED SPIRV_TOOLS_LIBRARY_TYPE)
	if(BUILD_SHARED_LIBS)
	set(SPIRV_TOOLS_LIBRARY_TYPE "SHARED")
	else()
	set(SPIRV_TOOLS_LIBRARY_TYPE "STATIC")
	endif()
	endif()
	endif(SPIRV_TOOLS_BUILD_STATIC)

	function(spvtools_default_compile_options TARGET)
	target_compile_options(${TARGET} PRIVATE ${SPIRV_WARNINGS})

	if (${COMPILER_IS_LIKE_GNU})
	target_compile_options(${TARGET} PRIVATE -std=c++11 -fno-exceptions)
	target_compile_options(${TARGET} PRIVATE
	-Wall -Wextra -Wno-long-long -Wshadow -Wundef -Wconversion
	-Wno-sign-conversion)

	if(NOT ENABLE_RTTI)
	add_compile_options(-fno-rtti)
	endif()
	# For good call stacks in profiles, keep the frame pointers.
	if(NOT "${SPIRV_PERF}" STREQUAL "")
	target_compile_options(${TARGET} PRIVATE -fno-omit-frame-pointer)
	endif()
	if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
	set(SPIRV_USE_SANITIZER "" CACHE STRING
	"Use the clang sanitizer [address\|memory\|thread\|...]")
	if(NOT "${SPIRV_USE_SANITIZER}" STREQUAL "")
	target_compile_options(${TARGET} PRIVATE
	-fsanitize=${SPIRV_USE_SANITIZER})
	set_target_properties(${TARGET} PROPERTIES
	LINK_FLAGS -fsanitize=${SPIRV_USE_SANITIZER})
	endif()
	target_compile_options(${TARGET} PRIVATE
	-ftemplate-depth=1024)
	else()
	target_compile_options(${TARGET} PRIVATE
	-Wno-missing-field-initializers)
	endif()
	endif()

	if (MSVC)
	# Specify /EHs for exception handling. This makes using SPIRV-Tools as
	# dependencies in other projects easier.
	if(ENABLE_EXCEPTIONS_ON_MSVC)
	target_compile_options(${TARGET} PRIVATE /EHs)
	endif()
	endif()

	# For MinGW cross compile, statically link to the C++ runtime.
	# But it still depends on MSVCRT.dll.
	if (${CMAKE_SYSTEM_NAME} MATCHES "Windows")
	if (${CMAKE_CXX_COMPILER_ID} MATCHES "GNU")
	set_target_properties(${TARGET} PROPERTIES
	LINK_FLAGS -static -static-libgcc -static-libstdc++)
	endif()
	endif()
	endfunction()

	if(NOT COMMAND find_host_package)
	macro(find_host_package)
	find_package(${ARGN})
	endmacro()
	endif()
	if(NOT COMMAND find_host_program)
	macro(find_host_program)
	find_program(${ARGN})
	endmacro()
	endif()

	# Tests require Python3
	find_host_package(PythonInterp 3 REQUIRED)

	# Check for symbol exports on Linux.
	# At the moment, this check will fail on the OSX build machines for the Android NDK.
	# It appears they don't have objdump.
	if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
	macro(spvtools_check_symbol_exports TARGET)
	if (NOT "${SPIRV_SKIP_TESTS}")
	add_test(NAME spirv-tools-symbol-exports-${TARGET}
	COMMAND ${PYTHON_EXECUTABLE}
	${spirv-tools_SOURCE_DIR}/utils/check_symbol_exports.py "$<TARGET_FILE:${TARGET}>")
	endif()
	endmacro()
	else()
	macro(spvtools_check_symbol_exports TARGET)
	if (NOT "${SPIRV_SKIP_TESTS}")
	message("Skipping symbol exports test for ${TARGET}")
	endif()
	endmacro()
	endif()

	if(ENABLE_SPIRV_TOOLS_INSTALL)
	if(WIN32)
	macro(spvtools_config_package_dir TARGET PATH)
	set(${PATH} ${TARGET}/cmake)
	endmacro()
	else()
	macro(spvtools_config_package_dir TARGET PATH)
	set(${PATH} ${CMAKE_INSTALL_LIBDIR}/cmake/${TARGET})
	endmacro()
	endif()

	macro(spvtools_generate_config_file TARGET)
	file(WRITE ${CMAKE_BINARY_DIR}/${TARGET}Config.cmake
	"include(CMakeFindDependencyMacro)\n"
	"find_dependency(${SPIRV_TOOLS})\n"
	"include(\${CMAKE_CURRENT_LIST_DIR}/${TARGET}Targets.cmake)\n"
	"set(${TARGET}_LIBRARIES ${TARGET})\n"
	"get_target_property(${TARGET}_INCLUDE_DIRS ${TARGET} INTERFACE_INCLUDE_DIRECTORIES)\n")
	endmacro()
	endif()

	# Defaults to OFF if the user didn't set it.
	option(SPIRV_SKIP_EXECUTABLES
	"Skip building the executable and tests along with the library"
	${SPIRV_SKIP_EXECUTABLES})
	option(SPIRV_SKIP_TESTS
	"Skip building tests along with the library" ${SPIRV_SKIP_TESTS})
	if ("${SPIRV_SKIP_EXECUTABLES}")
	set(SPIRV_SKIP_TESTS ON)
	endif()

	# Defaults to ON. The checks can be time consuming.
	# Turn off if they take too long.
	option(SPIRV_CHECK_CONTEXT "In a debug build, check if the IR context is in a valid state." ON)
	if (${SPIRV_CHECK_CONTEXT})
	add_compile_options($<$<CONFIG:Debug>:-DSPIRV_CHECK_CONTEXT>)
	endif()

	# Precompiled header macro. Parameters are source file list and filename for pch cpp file.
	macro(spvtools_pch SRCS PCHPREFIX)
	if(MSVC AND CMAKE_GENERATOR MATCHES "^Visual Studio" AND NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
	set(PCH_NAME "$(IntDir)\\${PCHPREFIX}.pch")
	# make source files use/depend on PCH_NAME
	set_source_files_properties(${${SRCS}} PROPERTIES COMPILE_FLAGS "/Yu${PCHPREFIX}.h /FI${PCHPREFIX}.h /Fp${PCH_NAME} /Zm300" OBJECT_DEPENDS "${PCH_NAME}")
	# make PCHPREFIX.cpp file compile and generate PCH_NAME
	set_source_files_properties("${PCHPREFIX}.cpp" PROPERTIES COMPILE_FLAGS "/Yc${PCHPREFIX}.h /Fp${PCH_NAME} /Zm300" OBJECT_OUTPUTS "${PCH_NAME}")
	list(APPEND ${SRCS} "${PCHPREFIX}.cpp")
	endif()
	endmacro(spvtools_pch)

	add_subdirectory(external)

	# Warning about extra semi-colons.
	#
	# This is not supported on all compilers/versions. so enabling only
	# for clang, since that works for all versions that our bots run.
	#
	# This is intentionally done after adding the external subdirectory,
	# so we don't enforce this flag on our dependencies, some of which do
	# not pass it.
	#
	# If the minimum version of CMake supported is updated to 3.0 or
	# later, then check_cxx_compiler_flag could be used instead.
	if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
	add_compile_options("-Wextra-semi")
	endif()

	add_subdirectory(source)
	add_subdirectory(tools)

	add_subdirectory(test)
	add_subdirectory(examples)

	if(ENABLE_SPIRV_TOOLS_INSTALL)
	install(
	FILES
	${CMAKE_CURRENT_SOURCE_DIR}/include/spirv-tools/libspirv.h
	${CMAKE_CURRENT_SOURCE_DIR}/include/spirv-tools/libspirv.hpp
	${CMAKE_CURRENT_SOURCE_DIR}/include/spirv-tools/optimizer.hpp
	${CMAKE_CURRENT_SOURCE_DIR}/include/spirv-tools/linker.hpp
	${CMAKE_CURRENT_SOURCE_DIR}/include/spirv-tools/instrument.hpp
	DESTINATION
	${CMAKE_INSTALL_INCLUDEDIR}/spirv-tools/)
	endif(ENABLE_SPIRV_TOOLS_INSTALL)

	if (NOT "${SPIRV_SKIP_TESTS}")
	add_test(NAME spirv-tools-copyrights
	COMMAND ${PYTHON_EXECUTABLE} utils/check_copyright.py
	WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
	endif()

	set(SPIRV_LIBRARIES "-lSPIRV-Tools-opt -lSPIRV-Tools -lSPIRV-Tools-link")
	set(SPIRV_SHARED_LIBRARIES "-lSPIRV-Tools-shared")

	# Build pkg-config file
	# Use a first-class target so it's regenerated when relevant files are updated.
	add_custom_target(spirv-tools-pkg-config ALL
	COMMAND ${CMAKE_COMMAND}
	-DCHANGES_FILE=${CMAKE_CURRENT_SOURCE_DIR}/CHANGES
	-DTEMPLATE_FILE=${CMAKE_CURRENT_SOURCE_DIR}/cmake/SPIRV-Tools.pc.in
	-DOUT_FILE=${CMAKE_CURRENT_BINARY_DIR}/SPIRV-Tools.pc
	-DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
	-DCMAKE_INSTALL_LIBDIR=${CMAKE_INSTALL_LIBDIR}
	-DCMAKE_INSTALL_INCLUDEDIR=${CMAKE_INSTALL_INCLUDEDIR}
	-DSPIRV_LIBRARIES=${SPIRV_LIBRARIES}
	-P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/write_pkg_config.cmake
	DEPENDS "CHANGES" "cmake/SPIRV-Tools.pc.in" "cmake/write_pkg_config.cmake")
	add_custom_target(spirv-tools-shared-pkg-config ALL
	COMMAND ${CMAKE_COMMAND}
	-DCHANGES_FILE=${CMAKE_CURRENT_SOURCE_DIR}/CHANGES
	-DTEMPLATE_FILE=${CMAKE_CURRENT_SOURCE_DIR}/cmake/SPIRV-Tools-shared.pc.in
	-DOUT_FILE=${CMAKE_CURRENT_BINARY_DIR}/SPIRV-Tools-shared.pc
	-DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
	-DCMAKE_INSTALL_LIBDIR=${CMAKE_INSTALL_LIBDIR}
	-DCMAKE_INSTALL_INCLUDEDIR=${CMAKE_INSTALL_INCLUDEDIR}
	-DSPIRV_SHARED_LIBRARIES=${SPIRV_SHARED_LIBRARIES}
	-P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/write_pkg_config.cmake
	DEPENDS "CHANGES" "cmake/SPIRV-Tools-shared.pc.in" "cmake/write_pkg_config.cmake")

	# Install pkg-config file
	if (ENABLE_SPIRV_TOOLS_INSTALL)
	install(
	FILES
	${CMAKE_CURRENT_BINARY_DIR}/SPIRV-Tools.pc
	${CMAKE_CURRENT_BINARY_DIR}/SPIRV-Tools-shared.pc
	DESTINATION
	${CMAKE_INSTALL_LIBDIR}/pkgconfig)
	endif()