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CMakeLists.txt
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cmake_minimum_required(VERSION 3.16)
if(NOT DEFINED CMAKE_BUILD_TYPE)
set(cmake_build_type_undefined 1)
endif()
# See docs/release_checklist.md
project(SDL3 LANGUAGES C VERSION "3.2.1")
if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
set(SDL3_MAINPROJECT ON)
else()
set(SDL3_MAINPROJECT OFF)
endif()
# By default, configure SDL3 in RelWithDebInfo configuration
if(SDL3_MAINPROJECT)
get_property(is_multi_config GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
if(is_multi_config)
# The first item in CMAKE_CONFIGURATION_TYPES is the default configuration
if(DEFINED CMAKE_CONFIGURATION_TYPES AND "RelWithDebInfo" IN_LIST CMAKE_CONFIGURATION_TYPES)
list(REMOVE_ITEM CMAKE_CONFIGURATION_TYPES "RelWithDebInfo")
list(INSERT CMAKE_CONFIGURATION_TYPES 0 "RelWithDebInfo")
set(CMAKE_CONFIGURATION_TYPES "${CMAKE_CONFIGURATION_TYPES}" CACHE STRING "CMake configuration types" FORCE)
endif()
else()
if(cmake_build_type_undefined)
set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING "CMake build type" FORCE)
endif()
endif()
endif()
# CMake 3.0 expands the "if(${A})" in "set(OFF 1);set(A OFF);if(${A})" to "if(1)"
# CMake 3.24+ emits a warning when not set.
unset(OFF)
unset(ON)
if(POLICY CMP0054)
cmake_policy(SET CMP0054 NEW)
endif()
include(CheckLibraryExists)
include(CheckIncludeFile)
include(CheckLanguage)
include(CheckSymbolExists)
include(CheckCSourceCompiles)
include(CheckCSourceRuns)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
include(CheckStructHasMember)
include(CMakeDependentOption)
include(CMakeParseArguments)
include(CMakePushCheckState)
include(GNUInstallDirs)
if(NOT DEFINED OpenGL_GL_PREFERENCE)
set(OpenGL_GL_PREFERENCE GLVND)
endif()
find_package(PkgConfig)
list(APPEND CMAKE_MODULE_PATH "${SDL3_SOURCE_DIR}/cmake")
include("${SDL3_SOURCE_DIR}/cmake/macros.cmake")
include("${SDL3_SOURCE_DIR}/cmake/sdlchecks.cmake")
include("${SDL3_SOURCE_DIR}/cmake/sdlcompilers.cmake")
include("${SDL3_SOURCE_DIR}/cmake/sdlcpu.cmake")
include("${SDL3_SOURCE_DIR}/cmake/sdlmanpages.cmake")
include("${SDL3_SOURCE_DIR}/cmake/sdlplatform.cmake")
include("${SDL3_SOURCE_DIR}/cmake/sdltargets.cmake")
include("${SDL3_SOURCE_DIR}/cmake/GetGitRevisionDescription.cmake")
include("${SDL3_SOURCE_DIR}/cmake/3rdparty.cmake")
include("${SDL3_SOURCE_DIR}/cmake/PreseedMSVCCache.cmake")
include("${SDL3_SOURCE_DIR}/cmake/PreseedEmscriptenCache.cmake")
SDL_DetectCompiler()
SDL_DetectTargetCPUArchitectures(SDL_CPUS)
# Increment this if there is an incompatible change - but if that happens,
# we should rename the library from SDL3 to SDL4, at which point this would
# reset to 0 anyway.
set(SDL_SO_VERSION_MAJOR "0")
set(SDL_SO_VERSION_MINOR "${PROJECT_VERSION_MINOR}")
set(SDL_SO_VERSION_PATCH "${PROJECT_VERSION_PATCH}")
set(SDL_SO_VERSION "${SDL_SO_VERSION_MAJOR}.${SDL_SO_VERSION_MINOR}.${SDL_SO_VERSION_PATCH}")
if(PROJECT_VERSION_MINOR MATCHES "[02468]$")
math(EXPR SDL_DYLIB_COMPAT_VERSION_MAJOR "100 * ${PROJECT_VERSION_MINOR} + 1")
set(SDL_DYLIB_COMPAT_VERSION_MINOR "0")
math(EXPR SDL_DYLIB_CURRENT_VERSION_MAJOR "${SDL_DYLIB_COMPAT_VERSION_MAJOR}")
set(SDL_DYLIB_CURRENT_VERSION_MINOR "${PROJECT_VERSION_PATCH}")
else()
math(EXPR SDL_DYLIB_COMPAT_VERSION_MAJOR "100 * ${PROJECT_VERSION_MINOR} + ${PROJECT_VERSION_PATCH} + 1")
set(SDL_DYLIB_COMPAT_VERSION_MINOR "0")
math(EXPR SDL_DYLIB_CURRENT_VERSION_MAJOR "${SDL_DYLIB_COMPAT_VERSION_MAJOR}")
set(SDL_DYLIB_CURRENT_VERSION_MINOR "0")
endif()
set(SDL_DYLIB_CURRENT_VERSION_PATCH "0")
set(SDL_DYLIB_COMPAT_VERSION_PATCH "0")
set(SDL_DYLIB_CURRENT_VERSION "${SDL_DYLIB_CURRENT_VERSION_MAJOR}.${SDL_DYLIB_CURRENT_VERSION_MINOR}.${SDL_DYLIB_CURRENT_VERSION_PATCH}")
set(SDL_DYLIB_COMPAT_VERSION "${SDL_DYLIB_COMPAT_VERSION_MAJOR}.${SDL_DYLIB_COMPAT_VERSION_MINOR}.${SDL_DYLIB_COMPAT_VERSION_PATCH}")
message(DEBUG "SDL_SO_VERSION=${SDL_SO_VERSION} SDL_DYLIB_CURRENT_VERSION=${SDL_DYLIB_CURRENT_VERSION} SDL_DYLIB_COMPAT_VERSION=${SDL_DYLIB_COMPAT_VERSION}")
set(SDL_FRAMEWORK_VERSION "A")
set(SDL_CHECK_REQUIRED_INCLUDES "" CACHE STRING "Extra includes (for CMAKE_REQUIRED_INCLUDES)")
set(SDL_CHECK_REQUIRED_LINK_OPTIONS "" CACHE STRING "Extra link options (for CMAKE_REQUIRED_LINK_OPTIONS)")
mark_as_advanced(SDL_CHECK_REQUIRED_INCLUDES SDL_CHECK_REQUIRED_LINK_OPTIONS)
string(APPEND CMAKE_REQUIRED_FLAGS " -D_GNU_SOURCE=1")
list(APPEND CMAKE_REQUIRED_INCLUDES ${SDL_CHECK_REQUIRED_INCLUDES})
list(APPEND CMAKE_REQUIRED_LINK_OPTIONS ${SDL_CHECK_REQUIRED_LINK_OPTIONS})
# Get the platform
SDL_DetectCMakePlatform()
# Don't mistake macOS for unix
if(UNIX AND NOT ANDROID AND NOT APPLE AND NOT RISCOS)
set(UNIX_SYS ON)
else()
set(UNIX_SYS OFF)
endif()
if(UNIX OR APPLE)
set(UNIX_OR_MAC_SYS ON)
else()
set(UNIX_OR_MAC_SYS OFF)
endif()
# Emscripten pthreads work, but you need to have a non-pthread fallback build
# for systems without support. It's not currently enough to not use
# pthread functions in a pthread-build; it won't start up on unsupported
# browsers. As such, you have to explicitly enable it on Emscripten builds
# for the time being. This default will change to ON once this becomes
# commonly supported in browsers or the Emscripten team makes a single
# binary work everywhere.
if (UNIX_OR_MAC_SYS AND NOT EMSCRIPTEN)
set(SDL_PTHREADS_DEFAULT ON)
else()
set(SDL_PTHREADS_DEFAULT OFF)
endif()
if(UNIX_SYS OR ANDROID)
set(SDL_CLOCK_GETTIME_DEFAULT ON)
else()
set(SDL_CLOCK_GETTIME_DEFAULT OFF)
endif()
# The hidraw support doesn't catch Xbox, PS4 and Nintendo controllers,
# so we'll just use libusb when it's available. libusb does not support iOS,
# so we default to yes on iOS.
if(IOS OR TVOS OR VISIONOS OR WATCHOS OR ANDROID)
set(SDL_HIDAPI_LIBUSB_AVAILABLE FALSE)
else()
set(SDL_HIDAPI_LIBUSB_AVAILABLE TRUE)
endif()
set(SDL_ASSEMBLY_DEFAULT OFF)
if(USE_CLANG OR USE_GCC OR USE_INTELCC OR MSVC_VERSION GREATER 1400)
set(SDL_ASSEMBLY_DEFAULT ON)
endif()
set(SDL_GCC_ATOMICS_DEFAULT OFF)
if(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QCC)
set(SDL_GCC_ATOMICS_DEFAULT ON)
endif()
# Default option knobs
set(SDL_LIBC_DEFAULT ON)
set(SDL_SYSTEM_ICONV_DEFAULT ON)
if(WINDOWS OR MACOS OR IOS OR TVOS OR VISIONOS OR WATCHOS)
set(SDL_SYSTEM_ICONV_DEFAULT OFF)
endif()
set(SDL_RELOCATABLE_DEFAULT OFF)
if(MSVC)
set(SDL_RELOCATABLE_DEFAULT ON)
endif()
if(MSVC)
if(NOT SDL_LIBC)
# Make sure /RTC1 is disabled, otherwise it will use functions from the CRT
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
string(REGEX REPLACE "/RTC(su|[1su])" "" ${flag_var} "${${flag_var}}")
endforeach(flag_var)
endif()
if(MSVC_CLANG)
# clang-cl treats /W4 as '-Wall -Wextra' -- we don't need -Wextra
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
string(REGEX REPLACE "/W4" "/W3" ${flag_var} "${${flag_var}}")
endforeach(flag_var)
endif()
endif()
set(SDL_SHARED_DEFAULT ON)
set(SDL_STATIC_DEFAULT ON)
set(SDL_SHARED_AVAILABLE ON)
set(SDL_STATIC_AVAILABLE ON)
# All these *_DEFAULT vars will default to ON if not specified,
# so you only need to override them if they need to be disabled.
if(EMSCRIPTEN)
# Set up default values for the currently supported set of subsystems:
# Emscripten/Javascript does not have assembly support, a dynamic library
# loading architecture, or low-level CPU inspection.
set(SDL_ASSEMBLY_DEFAULT OFF)
set(SDL_SHARED_AVAILABLE OFF)
endif()
if(VITA OR PSP OR PS2 OR N3DS OR RISCOS)
set(SDL_SHARED_AVAILABLE OFF)
endif()
if((RISCOS OR UNIX_SYS) AND NOT (LINUX OR NETBSD OR OPENBSD))
set(SDL_OSS_DEFAULT ON)
else()
set(SDL_OSS_DEFAULT OFF)
endif()
if(SDL_SHARED_DEFAULT AND SDL_STATIC_DEFAULT AND SDL_SHARED_AVAILABLE)
if(DEFINED BUILD_SHARED_LIBS)
# When defined, use BUILD_SHARED_LIBS as default
if(BUILD_SHARED_LIBS)
set(SDL_STATIC_DEFAULT OFF)
else()
set(SDL_SHARED_DEFAULT OFF)
endif()
else()
# Default to just building the shared library
set(SDL_STATIC_DEFAULT OFF)
endif()
endif()
set(SDL_SUBSYSTEMS )
macro(define_sdl_subsystem _name)
cmake_parse_arguments("_ds" "" "" "DEPS" ${ARGN})
string(TOUPPER ${_name} _uname)
if(NOT DEFINED SDL_${_uname}_DEFAULT)
set(SDL_${_uname}_DEFAULT ON)
endif()
if(_ds_DEPS)
cmake_dependent_option(SDL_${_uname} "Enable the ${_name} subsystem" "${SDL_${_uname}_DEFAULT}" "${_ds_DEPS}" OFF)
else()
option(SDL_${_uname} "Enable the ${_name} subsystem" "${SDL_${_uname}_DEFAULT}")
endif()
list(APPEND SDL_SUBSYSTEMS "${_name}")
endmacro()
define_sdl_subsystem(Audio)
define_sdl_subsystem(Video)
define_sdl_subsystem(GPU DEPS SDL_VIDEO)
define_sdl_subsystem(Render DEPS SDL_VIDEO)
define_sdl_subsystem(Camera DEPS SDL_VIDEO)
define_sdl_subsystem(Joystick)
define_sdl_subsystem(Haptic)
define_sdl_subsystem(Hidapi)
define_sdl_subsystem(Power)
define_sdl_subsystem(Sensor)
define_sdl_subsystem(Dialog)
cmake_dependent_option(SDL_FRAMEWORK "Build SDL libraries as Apple Framework" OFF "APPLE" OFF)
if(SDL_FRAMEWORK)
set(SDL_STATIC_AVAILABLE FALSE)
endif()
if(UNIX AND NOT ANDROID AND NOT RISCOS AND NOT SDL_FRAMEWORK)
set(SDL_RPATH_DEFAULT ON)
else()
set(SDL_RPATH_DEFAULT OFF)
endif()
set(SDL_PRESEED_AVAILABLE OFF)
if(COMMAND SDL_Preseed_CMakeCache)
set(SDL_PRESEED_AVAILABLE ON)
endif()
set(SDL_X11_XRANDR_DEFAULT ON)
if(SOLARIS)
set(SDL_X11_XRANDR_DEFAULT OFF)
endif()
# Allow some projects to be built conditionally.
set_option(SDL_INSTALL "Enable installation of SDL3" ${SDL3_MAINPROJECT})
cmake_dependent_option(SDL_INSTALL_CPACK "Create binary SDL3 archive using CPack" ${SDL3_MAINPROJECT} "SDL_INSTALL" ON)
cmake_dependent_option(SDL_INSTALL_DOCS "Install docs for SDL3" OFF "SDL_INSTALL;NOT SDL_FRAMEWORK" ON)
set_option(SDL_UNINSTALL "Enable uninstallation of SDL3" ${SDL3_MAINPROJECT})
cmake_dependent_option(SDL_PRESEED "Preseed CMake cache to speed up configuration" ON "${SDL_PRESEED_AVAILABLE}" OFF)
cmake_dependent_option(SDL_RELOCATABLE "Create relocatable SDL package" ${SDL_RELOCATABLE_DEFAULT} "SDL_INSTALL" OFF)
cmake_dependent_option(SDL_ANDROID_JAR "Enable creation of SDL3.jar" ${SDL3_MAINPROJECT} "ANDROID" ON)
option_string(SDL_ASSERTIONS "Enable internal sanity checks (auto/disabled/release/enabled/paranoid)" "auto")
set_option(SDL_ASSEMBLY "Enable assembly routines" ${SDL_ASSEMBLY_DEFAULT})
dep_option(SDL_AVX "Use AVX assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_AVX2 "Use AVX2 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_AVX512F "Use AVX512F assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE "Use SSE assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE2 "Use SSE2 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE3 "Use SSE3 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE4_1 "Use SSE4.1 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE4_2 "Use SSE4.2 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_MMX "Use MMX assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_ALTIVEC "Use Altivec assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_POWERPC32 OR SDL_CPU_POWERPC64" OFF)
dep_option(SDL_ARMNEON "Use NEON assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_ARM32 OR SDL_CPU_ARM64" OFF)
dep_option(SDL_LSX "Use LSX assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_LOONGARCH64" OFF)
dep_option(SDL_LASX "Use LASX assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_LOONGARCH64" OFF)
set_option(SDL_LIBC "Use the system C library" ${SDL_LIBC_DEFAULT})
set_option(SDL_SYSTEM_ICONV "Use iconv() from system-installed libraries" ${SDL_SYSTEM_ICONV_DEFAULT})
set_option(SDL_LIBICONV "Prefer iconv() from libiconv, if available, over libc version" OFF)
set_option(SDL_GCC_ATOMICS "Use gcc builtin atomics" ${SDL_GCC_ATOMICS_DEFAULT})
dep_option(SDL_DBUS "Enable D-Bus support" ON "${UNIX_SYS}" OFF)
dep_option(SDL_LIBURING "Enable liburing support" ON "${UNIX_SYS}" OFF)
dep_option(SDL_DISKAUDIO "Support the disk writer audio driver" ON "SDL_AUDIO" OFF)
dep_option(SDL_DUMMYAUDIO "Support the dummy audio driver" ON "SDL_AUDIO" OFF)
dep_option(SDL_DUMMYVIDEO "Use dummy video driver" ON "SDL_VIDEO" OFF)
dep_option(SDL_IBUS "Enable IBus support" ON "${UNIX_SYS}" OFF)
dep_option(SDL_OPENGL "Include OpenGL support" ON "SDL_VIDEO;NOT IOS;NOT VISIONOS;NOT TVOS;NOT WATCHOS" OFF)
dep_option(SDL_OPENGLES "Include OpenGL ES support" ON "SDL_VIDEO;NOT VISIONOS;NOT TVOS;NOT WATCHOS" OFF)
set_option(SDL_PTHREADS "Use POSIX threads for multi-threading" ${SDL_PTHREADS_DEFAULT})
dep_option(SDL_PTHREADS_SEM "Use pthread semaphores" ON "SDL_PTHREADS" OFF)
dep_option(SDL_OSS "Support the OSS audio API" ${SDL_OSS_DEFAULT} "UNIX_SYS OR RISCOS;SDL_AUDIO" OFF)
dep_option(SDL_ALSA "Support the ALSA audio API" ${UNIX_SYS} "SDL_AUDIO" OFF)
dep_option(SDL_ALSA_SHARED "Dynamically load ALSA audio support" ON "SDL_ALSA" OFF)
dep_option(SDL_JACK "Support the JACK audio API" ${UNIX_SYS} "SDL_AUDIO" OFF)
dep_option(SDL_JACK_SHARED "Dynamically load JACK audio support" ON "SDL_JACK" OFF)
set_option(SDL_PIPEWIRE "Use Pipewire audio" ${UNIX_SYS})
dep_option(SDL_PIPEWIRE_SHARED "Dynamically load Pipewire support" ON "SDL_PIPEWIRE" OFF)
dep_option(SDL_PULSEAUDIO "Use PulseAudio" ${UNIX_SYS} "SDL_AUDIO" OFF)
dep_option(SDL_PULSEAUDIO_SHARED "Dynamically load PulseAudio support" ON "SDL_PULSEAUDIO" OFF)
dep_option(SDL_SNDIO "Support the sndio audio API" ${UNIX_SYS} "SDL_AUDIO" OFF)
dep_option(SDL_SNDIO_SHARED "Dynamically load the sndio audio API" ON "SDL_SNDIO" OFF)
set_option(SDL_RPATH "Use an rpath when linking SDL" ${SDL_RPATH_DEFAULT})
set_option(SDL_CLOCK_GETTIME "Use clock_gettime() instead of gettimeofday()" ${SDL_CLOCK_GETTIME_DEFAULT})
dep_option(SDL_X11 "Use X11 video driver" ${UNIX_SYS} "SDL_VIDEO" OFF)
dep_option(SDL_X11_SHARED "Dynamically load X11 support" ON "SDL_X11" OFF)
dep_option(SDL_X11_XCURSOR "Enable Xcursor support" ON SDL_X11 OFF)
dep_option(SDL_X11_XDBE "Enable Xdbe support" ON SDL_X11 OFF)
dep_option(SDL_X11_XINPUT "Enable XInput support" ON SDL_X11 OFF)
dep_option(SDL_X11_XFIXES "Enable Xfixes support" ON SDL_X11 OFF)
dep_option(SDL_X11_XRANDR "Enable Xrandr support" "${SDL_X11_XRANDR_DEFAULT}" SDL_X11 OFF)
dep_option(SDL_X11_XSCRNSAVER "Enable Xscrnsaver support" ON SDL_X11 OFF)
dep_option(SDL_X11_XSHAPE "Enable XShape support" ON SDL_X11 OFF)
dep_option(SDL_X11_XSYNC "Enable Xsync support" ON SDL_X11 OFF)
dep_option(SDL_WAYLAND "Use Wayland video driver" ${UNIX_SYS} "SDL_VIDEO" OFF)
dep_option(SDL_WAYLAND_SHARED "Dynamically load Wayland support" ON "SDL_WAYLAND" OFF)
dep_option(SDL_WAYLAND_LIBDECOR "Use client-side window decorations on Wayland" ON "SDL_WAYLAND" OFF)
dep_option(SDL_WAYLAND_LIBDECOR_SHARED "Dynamically load libdecor support" ON "SDL_WAYLAND_LIBDECOR;SDL_WAYLAND_SHARED" OFF)
dep_option(SDL_RPI "Use Raspberry Pi video driver" ON "SDL_VIDEO;UNIX_SYS;SDL_CPU_ARM32 OR SDL_CPU_ARM64" OFF)
dep_option(SDL_ROCKCHIP "Use ROCKCHIP Hardware Acceleration video driver" ON "SDL_VIDEO;UNIX_SYS;SDL_CPU_ARM32 OR SDL_CPU_ARM64" OFF)
dep_option(SDL_COCOA "Use Cocoa video driver" ON "APPLE" OFF)
dep_option(SDL_DIRECTX "Use DirectX for Windows audio/video" ON "SDL_AUDIO OR SDL_VIDEO;WINDOWS" OFF)
dep_option(SDL_XINPUT "Use Xinput for Windows" ON "WINDOWS" OFF)
dep_option(SDL_WASAPI "Use the Windows WASAPI audio driver" ON "WINDOWS;SDL_AUDIO" OFF)
dep_option(SDL_RENDER_D3D "Enable the Direct3D 9 render driver" ON "SDL_RENDER;SDL_DIRECTX" OFF)
dep_option(SDL_RENDER_D3D11 "Enable the Direct3D 11 render driver" ON "SDL_RENDER;SDL_DIRECTX" OFF)
dep_option(SDL_RENDER_D3D12 "Enable the Direct3D 12 render driver" ON "SDL_RENDER;SDL_DIRECTX" OFF)
dep_option(SDL_RENDER_METAL "Enable the Metal render driver" ON "SDL_RENDER;${APPLE}" OFF)
dep_option(SDL_RENDER_GPU "Enable the SDL_GPU render driver" ON "SDL_RENDER;SDL_GPU" OFF)
dep_option(SDL_VIVANTE "Use Vivante EGL video driver" ON "${UNIX_SYS};SDL_CPU_ARM32" OFF)
dep_option(SDL_VULKAN "Enable Vulkan support" ON "SDL_VIDEO;ANDROID OR APPLE OR LINUX OR FREEBSD OR WINDOWS" OFF)
dep_option(SDL_RENDER_VULKAN "Enable the Vulkan render driver" ON "SDL_RENDER;SDL_VULKAN" OFF)
dep_option(SDL_METAL "Enable Metal support" ON "APPLE" OFF)
set_option(SDL_OPENVR "Use OpenVR video driver" OFF)
dep_option(SDL_KMSDRM "Use KMS DRM video driver" ${UNIX_SYS} "SDL_VIDEO" OFF)
dep_option(SDL_KMSDRM_SHARED "Dynamically load KMS DRM support" ON "SDL_KMSDRM" OFF)
set_option(SDL_OFFSCREEN "Use offscreen video driver" ON)
dep_option(SDL_DUMMYCAMERA "Support the dummy camera driver" ON SDL_CAMERA OFF)
option_string(SDL_BACKGROUNDING_SIGNAL "number to use for magic backgrounding signal or 'OFF'" OFF)
option_string(SDL_FOREGROUNDING_SIGNAL "number to use for magic foregrounding signal or 'OFF'" OFF)
dep_option(SDL_HIDAPI "Enable the HIDAPI subsystem" ON "NOT VISIONOS" OFF)
dep_option(SDL_HIDAPI_LIBUSB "Use libusb for low level joystick drivers" ON SDL_HIDAPI_LIBUSB_AVAILABLE OFF)
dep_option(SDL_HIDAPI_LIBUSB_SHARED "Dynamically load libusb support" ON SDL_HIDAPI_LIBUSB OFF)
dep_option(SDL_HIDAPI_JOYSTICK "Use HIDAPI for low level joystick drivers" ON SDL_HIDAPI OFF)
dep_option(SDL_VIRTUAL_JOYSTICK "Enable the virtual-joystick driver" ON SDL_HIDAPI OFF)
set_option(SDL_LIBUDEV "Enable libudev support" ON)
set_option(SDL_ASAN "Use AddressSanitizer to detect memory errors" OFF)
set_option(SDL_CCACHE "Use Ccache to speed up build" OFF)
set_option(SDL_CLANG_TIDY "Run clang-tidy static analysis" OFF)
set_option(SDL_GPU_DXVK "Build SDL_GPU with DXVK support" OFF)
set(SDL_VENDOR_INFO "" CACHE STRING "Vendor name and/or version to add to SDL_REVISION")
cmake_dependent_option(SDL_SHARED "Build a shared version of the library" ${SDL_SHARED_DEFAULT} ${SDL_SHARED_AVAILABLE} OFF)
cmake_dependent_option(SDL_STATIC "Build a static version of the library" ${SDL_STATIC_DEFAULT} ${SDL_STATIC_AVAILABLE} OFF)
option(SDL_TEST_LIBRARY "Build the SDL3_test library" ON)
dep_option(SDL_TESTS "Build the test directory" OFF SDL_TEST_LIBRARY OFF)
dep_option(SDL_INSTALL_TESTS "Install test-cases" OFF "SDL_INSTALL;NOT SDL_FRAMEWORK" OFF)
dep_option(SDL_TESTS_LINK_SHARED "link tests to shared SDL library" "${SDL_SHARED}" "SDL_SHARED;SDL_STATIC" "${SDL_SHARED}")
set(SDL_TESTS_TIMEOUT_MULTIPLIER "1" CACHE STRING "Timeout multiplier to account for really slow machines")
set_option(SDL_EXAMPLES "Build the examples directory")
dep_option(SDL_EXAMPLES_LINK_SHARED "link examples to shared SDL library" "${SDL_SHARED}" "SDL_SHARED;SDL_STATIC" "${SDL_SHARED}")
if(VITA)
set_option(VIDEO_VITA_PIB "Build with PSVita piglet gles2 support" OFF)
set_option(VIDEO_VITA_PVR "Build with PSVita PVR gles/gles2 support" OFF)
endif()
if(NOT (SDL_SHARED OR SDL_STATIC))
message(FATAL_ERROR "SDL_SHARED and SDL_STATIC cannot both be disabled")
endif()
if(SDL_PRESEED)
SDL_Preseed_CMakeCache()
endif()
if(SDL_SHARED)
add_library(SDL3-shared SHARED)
add_library(SDL3::SDL3-shared ALIAS SDL3-shared)
SDL_AddCommonCompilerFlags(SDL3-shared)
if ("c_std_99" IN_LIST CMAKE_C_COMPILE_FEATURES)
target_compile_features(SDL3-shared PRIVATE c_std_99)
else()
message(WARNING "target_compile_features does not know c_std_99 for C compiler")
endif()
endif()
if(SDL_STATIC)
add_library(SDL3-static STATIC)
add_library(SDL3::SDL3-static ALIAS SDL3-static)
SDL_AddCommonCompilerFlags(SDL3-static)
if ("c_std_99" IN_LIST CMAKE_C_COMPILE_FEATURES)
target_compile_features(SDL3-static PRIVATE c_std_99)
else()
message(WARNING "target_compile_features does not know c_std_99 for C compiler")
endif()
endif()
if(SDL_TEST_LIBRARY)
add_library(SDL3_test STATIC)
add_library(SDL3::SDL3_test ALIAS SDL3_test)
SDL_AddCommonCompilerFlags(SDL3_test)
endif()
# Make sure SDL3::SDL3 always exists
if(TARGET SDL3::SDL3-shared)
add_library(SDL3::SDL3 ALIAS SDL3-shared)
else()
add_library(SDL3::SDL3 ALIAS SDL3-static)
endif()
sdl_pc_link_options("-lSDL3")
# Enable large file support on 32-bit glibc, so that we can access files
# with large inode numbers
check_symbol_exists("__GLIBC__" "stdlib.h" LIBC_IS_GLIBC)
if (LIBC_IS_GLIBC AND CMAKE_SIZEOF_VOID_P EQUAL 4)
# Enable large file support on 32-bit glibc, so that we can access files with large inode numbers
sdl_compile_definitions(PRIVATE "_FILE_OFFSET_BITS=64")
# Enable 64-bit time_t on 32-bit glibc, so that time stamps remain correct beyond January 2038
sdl_compile_definitions(PRIVATE "_TIME_BITS=64")
endif()
check_linker_supports_version_file(HAVE_WL_VERSION_SCRIPT)
if(HAVE_WL_VERSION_SCRIPT)
sdl_shared_link_options("-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/src/dynapi/SDL_dynapi.sym")
else()
if((LINUX AND LIBC_IS_GLIBC) OR ANDROID)
message(FATAL_ERROR "Linker does not support '-Wl,--version-script=xxx.sym'. This is required on the current host platform (${SDL_CMAKE_PLATFORM}).")
endif()
endif()
if(CYGWIN)
# We build SDL on cygwin without the UNIX emulation layer
sdl_include_directories(PUBLIC SYSTEM "/usr/include/mingw")
cmake_push_check_state()
string(APPEND CMAKE_REQUIRED_FLAGS " -mno-cygwin")
check_c_source_compiles("int main(int argc, char **argv) { return 0; }"
HAVE_GCC_NO_CYGWIN)
cmake_pop_check_state()
if(HAVE_GCC_NO_CYGWIN)
sdl_shared_link_options("-mno-cygwin")
endif()
endif()
# General includes
sdl_compile_definitions(PRIVATE "USING_GENERATED_CONFIG_H")
sdl_include_directories(
PRIVATE
"${SDL3_BINARY_DIR}/include-config-$<LOWER_CASE:$<CONFIG>>/build_config"
"${SDL3_BINARY_DIR}/include-revision"
"${SDL3_SOURCE_DIR}/include"
)
# Note: The clang toolset for Visual Studio does not support the '-idirafter' option.
if(USE_GCC OR USE_INTELCC OR (USE_CLANG AND NOT MSVC_CLANG))
sdl_compile_options(NO_EXPORT PRIVATE "$<BUILD_INTERFACE:-idirafter${SDL3_SOURCE_DIR}/src/video/khronos>")
else()
sdl_include_directories(NO_EXPORT SYSTEM PRIVATE "$<BUILD_INTERFACE:${SDL3_SOURCE_DIR}/src/video/khronos>")
endif()
if(MSVC AND TARGET SDL3-shared AND NOT SDL_LIBC)
if(SDL_CPU_X64)
enable_language(ASM_MASM)
set(asm_src "${SDL3_SOURCE_DIR}/src/stdlib/SDL_mslibc_x64.masm")
target_compile_options(SDL3-shared PRIVATE "$<$<COMPILE_LANGUAGE:ASM_MASM>:/nologo>")
set_property(SOURCE "${asm_src}" PROPERTY LANGUAGE "ASM_MASM")
target_sources(SDL3-shared PRIVATE "${asm_src}")
elseif(SDL_CPU_ARM64)
enable_language(ASM_MARMASM)
set(asm_src "${SDL3_SOURCE_DIR}/src/stdlib/SDL_mslibc_arm64.masm")
target_compile_options(SDL3-shared PRIVATE "$<$<COMPILE_LANGUAGE:ASM_MARMASM>:/nologo>")
set_property(SOURCE "${asm_src}" PROPERTY LANGUAGE "ASM_MARMASM")
target_sources(SDL3-shared PRIVATE "${asm_src}")
elseif(SDL_CPU_ARM32)
# FIXME
endif()
endif()
if(USE_INTELCC)
# warning #39: division by zero
# warning #239: floating point underflow
# warning #264: floating-point value does not fit in required floating-point type
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/libm/e_exp.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd239 -wd264")
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/libm/e_log.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd39")
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/libm/e_log10.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd39")
set_property(SOURCE
"${SDL3_SOURCE_DIR}/src/libm/e_exp.c"
"${SDL3_SOURCE_DIR}/src/libm/e_log.c"
"${SDL3_SOURCE_DIR}/src/libm/e_log10.c"
PROPERTY SKIP_PRECOMPILE_HEADERS 1)
endif()
set(SDL_DEFAULT_ASSERT_LEVEL_CONFIGURED 1)
if(SDL_ASSERTIONS MATCHES "^(auto|)$")
# Do nada - use optimization settings to determine the assertion level
set(SDL_DEFAULT_ASSERT_LEVEL )
set(SDL_DEFAULT_ASSERT_LEVEL_CONFIGURED 0)
elseif(SDL_ASSERTIONS MATCHES "^(disabled|0)$")
set(SDL_DEFAULT_ASSERT_LEVEL 0)
elseif(SDL_ASSERTIONS MATCHES "^(release|1)$")
set(SDL_DEFAULT_ASSERT_LEVEL 1)
elseif(SDL_ASSERTIONS MATCHES "^(enabled|2)$")
set(SDL_DEFAULT_ASSERT_LEVEL 2)
elseif(SDL_ASSERTIONS MATCHES "^(paranoid|3)$")
set(SDL_DEFAULT_ASSERT_LEVEL 3)
else()
message(FATAL_ERROR "unknown assertion level")
endif()
set(HAVE_ASSERTIONS ${SDL_ASSERTIONS})
if(NOT SDL_BACKGROUNDING_SIGNAL STREQUAL "OFF")
sdl_compile_definitions(PRIVATE "SDL_BACKGROUNDING_SIGNAL=${SDL_BACKGROUNDING_SIGNAL}")
endif()
if(NOT SDL_FOREGROUNDING_SIGNAL STREQUAL "OFF")
sdl_compile_definitions(PRIVATE "SDL_FOREGROUNDING_SIGNAL=${SDL_FOREGROUNDING_SIGNAL}")
endif()
# Compiler option evaluation
if(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QCC)
if(SDL_GCC_ATOMICS)
check_c_source_compiles("int main(int argc, char **argv) {
int a;
void *x, *y, *z;
__sync_lock_test_and_set(&a, 4);
__sync_lock_test_and_set(&x, y);
__sync_fetch_and_add(&a, 1);
__sync_bool_compare_and_swap(&a, 5, 10);
__sync_bool_compare_and_swap(&x, y, z);
return 0; }" COMPILER_SUPPORTS_GCC_ATOMICS)
set(HAVE_GCC_ATOMICS ${COMPILER_SUPPORTS_GCC_ATOMICS})
if(NOT HAVE_GCC_ATOMICS)
check_c_source_compiles("int main(int argc, char **argv) {
int a;
__sync_lock_test_and_set(&a, 1);
__sync_lock_release(&a);
return 0; }" COMPILER_SUPPORTS_SYNC_LOCK_TEST_AND_SET)
set(HAVE_GCC_SYNC_LOCK_TEST_AND_SET ${COMPILER_SUPPORTS_SYNC_LOCK_TEST_AND_SET})
endif()
endif()
cmake_push_check_state()
string(APPEND CMAKE_REQUIRED_FLAGS " -fvisibility=hidden -Werror")
check_c_source_compiles("
#if !defined(__GNUC__) || __GNUC__ < 4
#error SDL only uses visibility attributes in GCC 4 or newer
#endif
__attribute__((visibility(\"default\"))) int foo(void);
__attribute__((visibility(\"hidden\"))) int bar(void);
int foo(void) { return 0; }
int bar(void) { return 1; }
int main(void) { return 0; }" HAVE_GCC_FVISIBILITY)
cmake_pop_check_state()
if(APPLE)
check_c_compiler_flag(-Wno-error=deprecated-declarations COMPILER_SUPPORTS_WNO_ERROR_DEPRECATED_DECLARATIONS)
if(COMPILER_SUPPORTS_WNO_ERROR_DEPRECATED_DECLARATIONS)
sdl_compile_options(PRIVATE "-Wno-error=deprecated-declarations")
endif()
endif()
if(APPLE)
check_linker_flag(C "-Wl,-undefined,error" LINKER_SUPPORTS_WL_UNDEFINED_ERROR)
if(LINKER_SUPPORTS_WL_UNDEFINED_ERROR)
sdl_shared_link_options("-Wl,-undefined,error")
endif()
elseif(NOT OPENBSD)
cmake_push_check_state()
check_linker_flag(C "-Wl,--no-undefined" LINKER_SUPPORTS_WL_NO_UNDEFINED)
#FIXME: originally this if had an additional "AND NOT (USE_CLANG AND WINDOWS)"
if(LINKER_SUPPORTS_WL_NO_UNDEFINED)
sdl_shared_link_options("-Wl,--no-undefined")
endif()
endif()
endif()
if(MSVC)
sdl_compile_definitions(
PRIVATE
"_CRT_SECURE_NO_DEPRECATE"
"_CRT_NONSTDC_NO_DEPRECATE"
"_CRT_SECURE_NO_WARNINGS"
)
# CET support was added in VS 2019 16.7
if(MSVC_VERSION GREATER 1926 AND CMAKE_GENERATOR_PLATFORM MATCHES "Win32|x64")
# Mark SDL3.dll as compatible with Control-flow Enforcement Technology (CET)
sdl_shared_link_options("-CETCOMPAT")
endif()
endif()
if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
# Due to a limitation of Microsoft's LTO implementation, LTO must be disabled for memcpy and memset.
# The same applies to various functions normally belonging in the C library (for x86 architecture).
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/stdlib/SDL_mslibc.c" APPEND_STRING PROPERTY COMPILE_FLAGS " /GL-")
endif()
if(SDL_ASSEMBLY)
set(HAVE_ASSEMBLY TRUE)
if(SDL_MMX)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
string(APPEND CMAKE_REQUIRED_FLAGS " -mmmx")
endif()
check_c_source_compiles("
#include <mmintrin.h>
void ints_add(int *dest, int *a, int *b, unsigned size) {
for (; size >= 2; size -= 2, dest += 2, a += 2, b += 2) {
*(__m64*)dest = _mm_add_pi32(*(__m64*)a, *(__m64*)b);
}
}
int main(int argc, char *argv[]) {
ints_add((int*)0, (int*)0, (int*)0, 0);
return 0;
}" COMPILER_SUPPORTS_MMX)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_MMX)
set(HAVE_MMX TRUE)
endif()
endif()
if(SDL_SSE)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
string(APPEND CMAKE_REQUIRED_FLAGS " -msse")
endif()
check_c_source_compiles("
#include <xmmintrin.h>
void floats_add(float *dest, float *a, float *b, unsigned size) {
for (; size >= 4; size -= 4, dest += 4, a += 4, b += 4) {
_mm_storeu_ps(dest, _mm_add_ps(_mm_loadu_ps(a), _mm_loadu_ps (b)));
}
}
int main(int argc, char **argv) {
floats_add((float*)0, (float*)0, (float*)0, 0);
return 0;
}" COMPILER_SUPPORTS_SSE)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_SSE)
set(HAVE_SSE TRUE)
endif()
endif()
if(SDL_SSE2)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
string(APPEND CMAKE_REQUIRED_FLAGS " -msse2")
endif()
check_c_source_compiles("
#include <emmintrin.h>
void doubles_add(double *dest, double *a, double *b, unsigned size) {
for (; size >= 4; size -= 4, dest += 4, a += 4, b += 4) {
_mm_store_pd(dest, _mm_add_pd(_mm_loadu_pd(a), _mm_loadu_pd(b)));
}
}
int main(int argc, char **argv) {
doubles_add((double*)0, (double*)0, (double*)0, 0);
return 0;
}" COMPILER_SUPPORTS_SSE2)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_SSE2)
set(HAVE_SSE2 TRUE)
endif()
endif()
if(SDL_SSE3)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
string(APPEND CMAKE_REQUIRED_FLAGS " -msse3")
endif()
check_c_source_compiles("
#include <pmmintrin.h>
void ints_add(int *dest, int *a, int *b, unsigned size) {
for (; size >= 4; size -= 4, dest += 4, a += 4, b += 4) {
_mm_storeu_si128((__m128i*)dest, _mm_add_epi32(_mm_lddqu_si128((__m128i*)a), _mm_lddqu_si128((__m128i*)b)));
}
}
int main(int argc, char **argv) {
ints_add((int*)0, (int*)0, (int*)0, 0);
return 0;
}" COMPILER_SUPPORTS_SSE3)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_SSE3)
set(HAVE_SSE3 TRUE)
endif()
endif()
if(SDL_SSE4_1)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
string(APPEND CMAKE_REQUIRED_FLAGS " -msse4.1")
endif()
check_c_source_compiles("
#include <smmintrin.h>
void ints_mul(int *dest, int *a, int *b, unsigned size) {
for (; size >= 4; size -= 4, dest += 4, a += 4, b += 4) {
_mm_storeu_si128((__m128i*)dest, _mm_mullo_epi32(_mm_lddqu_si128((__m128i*)a), _mm_lddqu_si128((__m128i*)b)));
}
}
int main(int argc, char **argv) {
ints_mul((int*)0, (int*)0, (int*)0, 0);
return 0;
}" COMPILER_SUPPORTS_SSE4_1)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_SSE4_1)
set(HAVE_SSE4_1 TRUE)
endif()
endif()
if(SDL_SSE4_2)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
string(APPEND CMAKE_REQUIRED_FLAGS " -msse4.2")
endif()
check_c_source_compiles("
#include <nmmintrin.h>
unsigned calc_crc32c(const char *text, unsigned len) {
unsigned crc32c = ~0;
for (; len >= 4; len -= 4, text += 4) {
crc32c = (unsigned)_mm_crc32_u32(crc32c, *(unsigned*)text);
}
return crc32c;
}
int main(int argc, char **argv) {
calc_crc32c(\"SDL_SSE4\",8);
return 0;
}" COMPILER_SUPPORTS_SSE4_2)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_SSE4_2)
set(HAVE_SSE4_2 TRUE)
endif()
endif()
if(SDL_AVX)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
string(APPEND CMAKE_REQUIRED_FLAGS " -mavx")
endif()
check_c_source_compiles("
#include <immintrin.h>
void floats_add(float *dest, float *a, float *b, unsigned size) {
for (; size >= 8; size -= 8, dest += 8, a += 8, b += 8) {
_mm256_storeu_ps(dest, _mm256_add_ps(_mm256_loadu_ps(a), _mm256_loadu_ps(b)));
}
}
int main(int argc, char **argv) {
floats_add((float*)0, (float*)0, (float*)0, 0);
return 0;
}" COMPILER_SUPPORTS_AVX)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_AVX)
set(HAVE_AVX TRUE)
endif()
endif()
if(SDL_AVX2)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
string(APPEND CMAKE_REQUIRED_FLAGS " -mavx2")
endif()
check_c_source_compiles("
#include <immintrin.h>
void ints_add(int *dest, int *a, int *b, unsigned size) {
for (; size >= 8; size -= 8, dest += 8, a += 8, b += 8) {
_mm256_storeu_si256((__m256i*)dest, _mm256_add_epi32(_mm256_loadu_si256((__m256i*)a), _mm256_loadu_si256((__m256i*)b)));
}
}
int main(int argc, char **argv) {
ints_add((int*)0, (int*)0, (int*)0, 0);
return 0;
}" COMPILER_SUPPORTS_AVX2)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_AVX2)
set(HAVE_AVX2 TRUE)
endif()
endif()
if(SDL_AVX512F)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
string(APPEND CMAKE_REQUIRED_FLAGS " -mavx512f")
endif()
check_c_source_compiles("
#include <immintrin.h>
void floats_add(float *dest, float *a, float *b, unsigned size) {
for (; size >= 16; size -= 16, dest += 16, a += 16, b += 16) {
_mm512_storeu_ps(dest, _mm512_add_ps(_mm512_loadu_ps(a), _mm512_loadu_ps(b)));
}
}
int main(int argc, char **argv) {
floats_add((float*)0, (float*)0, (float*)0, 0);
return 0;
}" COMPILER_SUPPORTS_AVX512F)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_AVX512F)
set(HAVE_AVX512F TRUE)
endif()
endif()
if(SDL_ARMNEON)
check_c_source_compiles("
#include <arm_neon.h>
void floats_add(float *dest, float *a, float *b, unsigned size) {
for (; size >= 4; size -= 4, dest += 4, a += 4, b += 4) {
vst1q_f32(dest, vaddq_f32(vld1q_f32(a), vld1q_f32(b)));
}
}
int main(int argc, char *argv[]) {
floats_add((float*)0, (float*)0, (float*)0, 0);
return 0;
}" COMPILER_SUPPORTS_ARMNEON)
if(COMPILER_SUPPORTS_ARMNEON)
set(HAVE_ARMNEON TRUE)
endif()
endif()
if(USE_GCC OR USE_CLANG)
# TODO: Those all seem to be quite GCC specific - needs to be
# reworked for better compiler support
if(SDL_ALTIVEC)
cmake_push_check_state()
string(APPEND CMAKE_REQUIRED_FLAGS " -maltivec")
check_c_source_compiles("
#include <altivec.h>
vector unsigned int vzero() {
return vec_splat_u32(0);
}
int main(int argc, char **argv) { return 0; }" COMPILER_SUPPORTS_ALTIVEC)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_ALTIVEC)
set(HAVE_ALTIVEC TRUE)
set(SDL_ALTIVEC_BLITTERS 1)
sdl_compile_options(PRIVATE "-maltivec")
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/video/SDL_blit_N.c" APPEND PROPERTY COMPILE_DEFINITIONS "SDL_ENABLE_ALTIVEC")
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/video/SDL_blit_N.c" PROPERTY SKIP_PRECOMPILE_HEADERS 1)
endif()
endif()
if(SDL_LSX)
cmake_push_check_state()
string(APPEND CMAKE_REQUIRED_FLAGS " -mlsx")
check_c_source_compiles("
#ifndef __loongarch_sx
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" COMPILER_SUPPORTS_LSX)
check_include_file("lsxintrin.h" HAVE_LSXINTRIN_H)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_LSX AND HAVE_LSXINTRIN_H)
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/video/yuv2rgb/yuv_rgb_lsx.c" APPEND PROPERTY COMPILE_OPTIONS "-mlsx")
set(HAVE_LSX TRUE)
endif()
endif()
if(SDL_LASX)
cmake_push_check_state()
string(APPEND CMAKE_REQUIRED_FLAGS " -mlasx")
check_c_source_compiles("
#ifndef __loongarch_asx
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" COMPILER_SUPPORTS_LASX)
check_include_file("lasxintrin.h" HAVE_LASXINTRIN_H)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_LASX AND HAVE_LASXINTRIN_H)
set(HAVE_LASX TRUE)
endif()
endif()
endif()
endif()
if(NOT HAVE_MMX)
set(SDL_DISABLE_MMX 1)
endif()
if(NOT HAVE_SSE)
set(SDL_DISABLE_SSE 1)
endif()
if(NOT HAVE_SSE2)
set(SDL_DISABLE_SSE2 1)
endif()
if(NOT HAVE_SSE3)
set(SDL_DISABLE_SSE3 1)
endif()
if(NOT HAVE_SSE4_1)
set(SDL_DISABLE_SSE4_1 1)
endif()
if(NOT HAVE_SSE4_2)
set(SDL_DISABLE_SSE4_2 1)
endif()
if(NOT HAVE_AVX)
set(SDL_DISABLE_AVX 1)
endif()
if(NOT HAVE_AVX2)
set(SDL_DISABLE_AVX2 1)
endif()
if(NOT HAVE_AVX512F)
set(SDL_DISABLE_AVX512F 1)
endif()
if(NOT HAVE_LSX)
set(SDL_DISABLE_LSX 1)
endif()
if(NOT HAVE_LASX)
set(SDL_DISABLE_LASX 1)
endif()
if(NOT HAVE_ARMNEON)
set(SDL_DISABLE_NEON 1)
endif()
set(SDL_DISABLE_ALLOCA 0)
check_include_file("alloca.h" "HAVE_ALLOCA_H")
if(MSVC)
check_include_file("malloc.h" "HAVE_MALLOC_H")
check_symbol_exists("_alloca" "malloc.h" _ALLOCA_IN_MALLOC_H)
if(NOT HAVE_ALLOCA_H AND NOT _ALLOCA_IN_MALLOC_H)
set(SDL_DISABLE_ALLOCA 1)
endif()
endif()
# TODO: Can't deactivate on FreeBSD? w/o LIBC, SDL_stdinc.h can't define anything.
if(SDL_LIBC)
set(available_headers)
set(HAVE_LIBC TRUE)
set(headers_to_check
float.h
iconv.h
inttypes.h
limits.h
malloc.h
math.h
memory.h
signal.h
stdarg.h
stdbool.h
stddef.h
stdint.h
stdio.h
stdlib.h
string.h
strings.h
sys/types.h
time.h
wchar.h
)
foreach(_HEADER IN LISTS headers_to_check)
string(TOUPPER "${_HEADER}" HEADER_IDENTIFIER)
string(REGEX REPLACE "[./]" "_" HEADER_IDENTIFIER "${HEADER_IDENTIFIER}")
set(LIBC_HAS_VAR "LIBC_HAS_${HEADER_IDENTIFIER}")
check_include_file("${_HEADER}" "${LIBC_HAS_VAR}")
set(HAVE_${HEADER_IDENTIFIER} ${${LIBC_HAS_VAR}})
if(HAVE_${HEADER_IDENTIFIER})
list(APPEND available_headers "${_HEADER}")
endif()
endforeach()