1# Copyright (C) 2020 The Khronos Group Inc. 2# 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions 7# are met: 8# 9# Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# 12# Redistributions in binary form must reproduce the above 13# copyright notice, this list of conditions and the following 14# disclaimer in the documentation and/or other materials provided 15# with the distribution. 16# 17# Neither the name of The Khronos Group Inc. nor the names of its 18# contributors may be used to endorse or promote products derived 19# from this software without specific prior written permission. 20# 21# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25# COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 29# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32# POSSIBILITY OF SUCH DAMAGE. 33cmake_minimum_required(VERSION 3.14.0) 34project(glslang) 35 36set_property(GLOBAL PROPERTY USE_FOLDERS ON) 37 38# Adhere to GNU filesystem layout conventions 39include(GNUInstallDirs) 40include(CMakePackageConfigHelpers) 41 42# Needed for CMAKE_DEPENDENT_OPTION macro 43include(CMakeDependentOption) 44 45option(BUILD_SHARED_LIBS "Build Shared Libraries" OFF) 46option(BUILD_EXTERNAL "Build external dependencies in /External" ON) 47 48set(LIB_TYPE STATIC) 49 50if(BUILD_SHARED_LIBS) 51 set(LIB_TYPE SHARED) 52endif() 53 54if ("${CMAKE_BUILD_TYPE}" STREQUAL "") 55 # This logic inside SPIRV-Tools, which can upset build target dependencies 56 # if changed after targets are already defined. To prevent these issues, 57 # ensure CMAKE_BUILD_TYPE is assigned early and at the glslang root scope. 58 message(STATUS "No build type selected, default to Debug") 59 set(CMAKE_BUILD_TYPE "Debug") 60endif() 61 62option(SKIP_GLSLANG_INSTALL "Skip installation" ${SKIP_GLSLANG_INSTALL}) 63if(NOT ${SKIP_GLSLANG_INSTALL}) 64 set(ENABLE_GLSLANG_INSTALL ON) 65endif() 66option(ENABLE_SPVREMAPPER "Enables building of SPVRemapper" ON) 67 68option(ENABLE_GLSLANG_BINARIES "Builds glslang and spirv-remap" ON) 69 70option(ENABLE_GLSLANG_JS 71 "If using Emscripten, build glslang.js. Otherwise, builds a sample executable for binary-size testing." OFF) 72CMAKE_DEPENDENT_OPTION(ENABLE_GLSLANG_WEBMIN 73 "Reduces glslang to minimum needed for web use" 74 OFF "ENABLE_GLSLANG_JS" 75 OFF) 76CMAKE_DEPENDENT_OPTION(ENABLE_GLSLANG_WEBMIN_DEVEL 77 "For ENABLE_GLSLANG_WEBMIN builds, enables compilation error messages" 78 OFF "ENABLE_GLSLANG_WEBMIN" 79 OFF) 80CMAKE_DEPENDENT_OPTION(ENABLE_EMSCRIPTEN_SINGLE_FILE 81 "If using Emscripten, enables SINGLE_FILE build" 82 OFF "ENABLE_GLSLANG_JS AND EMSCRIPTEN" 83 OFF) 84CMAKE_DEPENDENT_OPTION(ENABLE_EMSCRIPTEN_ENVIRONMENT_NODE 85 "If using Emscripten, builds to run on Node instead of Web" 86 OFF "ENABLE_GLSLANG_JS AND EMSCRIPTEN" 87 OFF) 88 89CMAKE_DEPENDENT_OPTION(ENABLE_HLSL 90 "Enables HLSL input support" 91 ON "NOT ENABLE_GLSLANG_WEBMIN" 92 OFF) 93 94option(ENABLE_RTTI "Enables RTTI" OFF) 95option(ENABLE_EXCEPTIONS "Enables Exceptions" OFF) 96option(ENABLE_OPT "Enables spirv-opt capability if present" ON) 97 98if(MINGW OR (CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND ${CMAKE_CXX_COMPILER_ID} MATCHES "GNU")) 99 # Workaround for CMake behavior on Mac OS with gcc, cmake generates -Xarch_* arguments 100 # which gcc rejects 101 option(ENABLE_PCH "Enables Precompiled header" OFF) 102else() 103 option(ENABLE_PCH "Enables Precompiled header" ON) 104endif() 105option(ENABLE_CTEST "Enables testing" ON) 106 107if(ENABLE_CTEST) 108 include(CTest) 109endif() 110 111if(ENABLE_HLSL) 112 add_definitions(-DENABLE_HLSL) 113endif() 114 115if(ENABLE_GLSLANG_WEBMIN) 116 add_definitions(-DGLSLANG_WEB) 117 if(ENABLE_GLSLANG_WEBMIN_DEVEL) 118 add_definitions(-DGLSLANG_WEB_DEVEL) 119 endif() 120endif() 121 122if(WIN32) 123 set(CMAKE_DEBUG_POSTFIX "d") 124 option(OVERRIDE_MSVCCRT "Overrides runtime of MSVC " ON) 125 if(MSVC AND OVERRIDE_MSVCCRT) 126 include(ChooseMSVCCRT.cmake) 127 endif() 128 add_definitions(-DGLSLANG_OSINCLUDE_WIN32) 129elseif(UNIX OR ANDROID) 130 add_definitions(-DGLSLANG_OSINCLUDE_UNIX) 131else() 132 message("unknown platform") 133endif() 134 135if(${CMAKE_CXX_COMPILER_ID} MATCHES "GNU") 136 add_compile_options(-Wall -Wmaybe-uninitialized -Wuninitialized -Wunused -Wunused-local-typedefs 137 -Wunused-parameter -Wunused-value -Wunused-variable -Wunused-but-set-parameter -Wunused-but-set-variable -fno-exceptions) 138 if(NOT ENABLE_RTTI) 139 add_compile_options(-fno-rtti) 140 endif() 141 if(NOT ENABLE_EXCEPTIONS) 142 add_compile_options(-fno-exceptions) 143 endif() 144 if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS "9.0.0") 145 add_compile_options(-Werror=deprecated-copy) 146 endif() 147 148 if(NOT CMAKE_SYSTEM_NAME STREQUAL "OpenBSD" AND NOT CMAKE_SYSTEM_NAME STREQUAL "Darwin") 149 # Error if there's symbols that are not found at link time. 150 add_link_options("-Wl,--no-undefined") 151 endif() 152elseif(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang" AND NOT MSVC) 153 add_compile_options(-Wall -Wuninitialized -Wunused -Wunused-local-typedefs 154 -Wunused-parameter -Wunused-value -Wunused-variable) 155 if(NOT ENABLE_RTTI) 156 add_compile_options(-fno-rtti) 157 endif() 158 if(NOT ENABLE_EXCEPTIONS) 159 add_compile_options(-fno-exceptions) 160 endif() 161 162 if(NOT CMAKE_SYSTEM_NAME STREQUAL "OpenBSD") 163 # Error if there's symbols that are not found at link time. 164 if (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang") 165 add_link_options("-Wl,-undefined,error") 166 elseif(NOT APPLE) 167 add_link_options("-Wl,--no-undefined") 168 endif() 169 endif() 170elseif(MSVC) 171 if(NOT ENABLE_RTTI) 172 string(FIND "${CMAKE_CXX_FLAGS}" "/GR" MSVC_HAS_GR) 173 if(MSVC_HAS_GR) 174 string(REGEX REPLACE "/GR" "/GR-" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 175 else() 176 add_compile_options(/GR-) # Disable RTTI 177 endif() 178 endif() 179 if(ENABLE_EXCEPTIONS) 180 add_compile_options(/EHsc) # Enable Exceptions 181 else() 182 string(REGEX REPLACE "/EHsc" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") # Try to remove default /EHsc cxx_flag 183 add_compile_options(/D_HAS_EXCEPTIONS=0) 184 endif() 185endif() 186 187if(ENABLE_GLSLANG_JS) 188 if(MSVC) 189 add_compile_options(/Os /GR-) 190 else() 191 add_compile_options(-Os -fno-rtti -fno-exceptions) 192 if(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang" AND NOT MSVC) 193 add_compile_options(-Wno-unused-parameter) 194 add_compile_options(-Wno-unused-variable -Wno-unused-const-variable) 195 endif() 196 endif() 197endif() 198 199# Request C++17 200set(CMAKE_CXX_STANDARD 17) 201set(CMAKE_CXX_STANDARD_REQUIRED ON) 202set(CMAKE_CXX_EXTENSIONS OFF) 203 204function(glslang_set_link_args TARGET) 205 # For MinGW compiles, statically link against the GCC and C++ runtimes. 206 # This avoids the need to ship those runtimes as DLLs. 207 # This is supported by GCC and Clang. 208 if(WIN32 AND NOT MSVC) 209 set_target_properties(${TARGET} PROPERTIES 210 LINK_FLAGS "-static -static-libgcc -static-libstdc++") 211 endif() 212endfunction(glslang_set_link_args) 213 214if(NOT COMMAND find_host_package) 215 macro(find_host_package) 216 find_package(${ARGN}) 217 endmacro() 218endif() 219 220# Root directory for build-time generated include files 221set(GLSLANG_GENERATED_INCLUDEDIR "${CMAKE_BINARY_DIR}/include") 222 223################################################################################ 224# Build version information generation 225################################################################################ 226include(parse_version.cmake) 227set(GLSLANG_CHANGES_FILE "${CMAKE_CURRENT_SOURCE_DIR}/CHANGES.md") 228set(GLSLANG_BUILD_INFO_H_TMPL "${CMAKE_CURRENT_SOURCE_DIR}/build_info.h.tmpl") 229set(GLSLANG_BUILD_INFO_H "${GLSLANG_GENERATED_INCLUDEDIR}/glslang/build_info.h") 230 231parse_version(${GLSLANG_CHANGES_FILE} GLSLANG) 232 233function(configurate_version) 234 set(major ${GLSLANG_VERSION_MAJOR}) 235 set(minor ${GLSLANG_VERSION_MINOR}) 236 set(patch ${GLSLANG_VERSION_PATCH}) 237 set(flavor ${GLSLANG_VERSION_FLAVOR}) 238 configure_file(${GLSLANG_BUILD_INFO_H_TMPL} ${GLSLANG_BUILD_INFO_H} @ONLY) 239endfunction() 240 241configurate_version() 242 243# glslang_add_build_info_dependency() adds the glslang-build-info dependency and 244# generated include directories to target. 245function(glslang_add_build_info_dependency target) 246 target_include_directories(${target} PUBLIC $<BUILD_INTERFACE:${GLSLANG_GENERATED_INCLUDEDIR}>) 247endfunction() 248 249# glslang_only_export_explicit_symbols() makes the symbol visibility hidden by 250# default for <target> when building shared libraries, and sets the 251# GLSLANG_IS_SHARED_LIBRARY define, and GLSLANG_EXPORTING to 1 when specifically 252# building <target>. 253function(glslang_only_export_explicit_symbols target) 254 if(BUILD_SHARED_LIBS) 255 target_compile_definitions(${target} PUBLIC "GLSLANG_IS_SHARED_LIBRARY=1") 256 if(WIN32) 257 target_compile_definitions(${target} PRIVATE "GLSLANG_EXPORTING=1") 258 else() 259 target_compile_options(${target} PRIVATE "-fvisibility=hidden") 260 endif() 261 endif() 262endfunction() 263 264# glslang_pch() adds precompiled header rules to <target> for the pre-compiled 265# header file <pch>. As target_precompile_headers() was added in CMake 3.16, 266# this is a no-op if called on earlier versions of CMake. 267if(NOT CMAKE_VERSION VERSION_LESS "3.16" AND ENABLE_PCH) 268 function(glslang_pch target pch) 269 target_precompile_headers(${target} PRIVATE ${pch}) 270 endfunction() 271else() 272 function(glslang_pch target pch) 273 endfunction() 274 if(ENABLE_PCH) 275 message("Your CMake version is ${CMAKE_VERSION}. Update to at least 3.16 to enable precompiled headers to speed up incremental builds") 276 endif() 277endif() 278 279if(BUILD_EXTERNAL AND IS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/External) 280 find_host_package(Python3 REQUIRED) 281 282 # We depend on these for later projects, so they should come first. 283 add_subdirectory(External) 284endif() 285 286if(NOT TARGET SPIRV-Tools-opt) 287 set(ENABLE_OPT OFF) 288endif() 289 290if(ENABLE_OPT) 291 message(STATUS "optimizer enabled") 292 add_definitions(-DENABLE_OPT=1) 293else() 294 if(ENABLE_HLSL) 295 message(STATUS "spirv-tools not linked - illegal SPIRV may be generated for HLSL") 296 endif() 297 add_definitions(-DENABLE_OPT=0) 298endif() 299 300add_subdirectory(glslang) 301add_subdirectory(OGLCompilersDLL) 302if(ENABLE_GLSLANG_BINARIES) 303 add_subdirectory(StandAlone) 304endif() 305add_subdirectory(SPIRV) 306if(ENABLE_HLSL) 307 add_subdirectory(hlsl) 308endif() 309if(ENABLE_CTEST) 310 add_subdirectory(gtests) 311endif() 312 313if(ENABLE_CTEST AND BUILD_TESTING) 314 # glslang-testsuite runs a bash script on Windows. 315 # Make sure to use '-o igncr' flag to ignore carriage returns (\r). 316 set(IGNORE_CR_FLAG "") 317 if(WIN32) 318 set(IGNORE_CR_FLAG -o igncr) 319 endif() 320 321 if (CMAKE_CONFIGURATION_TYPES) 322 set(RESULTS_PATH ${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/localResults) 323 set(VALIDATOR_PATH ${CMAKE_CURRENT_BINARY_DIR}/StandAlone/$<CONFIG>/glslang) 324 set(REMAP_PATH ${CMAKE_CURRENT_BINARY_DIR}/StandAlone/$<CONFIG>/spirv-remap) 325 else() 326 set(RESULTS_PATH ${CMAKE_CURRENT_BINARY_DIR}/localResults) 327 set(VALIDATOR_PATH ${CMAKE_CURRENT_BINARY_DIR}/StandAlone/glslang) 328 set(REMAP_PATH ${CMAKE_CURRENT_BINARY_DIR}/StandAlone/spirv-remap) 329 endif() 330 331 add_test(NAME glslang-testsuite 332 COMMAND bash ${IGNORE_CR_FLAG} runtests ${RESULTS_PATH} ${VALIDATOR_PATH} ${REMAP_PATH} 333 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/Test/) 334endif() 335 336if(ENABLE_GLSLANG_INSTALL) 337 file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/glslang-config.cmake.in" [=[ 338 @PACKAGE_INIT@ 339 @INSTALL_CONFIG_UNIX@ 340 include("@PACKAGE_PATH_EXPORT_TARGETS@") 341 ]=]) 342 343 set(PATH_EXPORT_TARGETS "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}/glslang-targets.cmake") 344 if(UNIX OR "${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia") 345 set(INSTALL_CONFIG_UNIX [=[ 346 include(CMakeFindDependencyMacro) 347 set(THREADS_PREFER_PTHREAD_FLAG ON) 348 find_dependency(Threads REQUIRED) 349 ]=]) 350 endif() 351 configure_package_config_file( 352 "${CMAKE_CURRENT_BINARY_DIR}/glslang-config.cmake.in" 353 "${CMAKE_CURRENT_BINARY_DIR}/glslang-config.cmake" 354 PATH_VARS 355 PATH_EXPORT_TARGETS 356 INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME} 357 ) 358 359 write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/glslang-config-version.cmake" 360 VERSION ${GLSLANG_VERSION} 361 COMPATIBILITY SameMajorVersion 362 ) 363 364 install( 365 EXPORT glslang-targets 366 NAMESPACE "glslang::" 367 DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}" 368 ) 369 370 install( 371 FILES 372 "${CMAKE_CURRENT_BINARY_DIR}/glslang-config.cmake" 373 "${CMAKE_CURRENT_BINARY_DIR}/glslang-config-version.cmake" 374 DESTINATION 375 "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}" 376 ) 377endif() 378