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CMakeLists.txt
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cmake_minimum_required(VERSION 3.0.0)
if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
message(FATAL_ERROR "Prevented in-tree build. Please create a build directory outside of the SDL source code and run \"cmake -S ${CMAKE_SOURCE_DIR} -B .\" from there")
endif()
# See docs/release_checklist.md
project(SDL3 LANGUAGES C CXX VERSION "3.0.0")
if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
set(SDL3_SUBPROJECT OFF)
else()
set(SDL3_SUBPROJECT ON)
endif()
set(SDL_EXTRA_LIBS)
set(SDL_EXTRA_LDFLAGS)
set(SDL_CMAKE_DEPENDS)
set(SDL_PC_PRIVATE_REQUIRES)
# The sdl-build-options interface library collects all PRIVATE build options for the SDL libraries
add_library(sdl-build-options INTERFACE)
# The sdl-shared-build-options interface library collects all PRIVATE build options for the SDL shared library
add_library(sdl-shared-build-options INTERFACE)
# The sdl-global-options interface library collects all PRIVATE build options for the SDL libraries + test + ...
add_library(sdl-global-options INTERFACE)
if(WINDOWS_STORE)
target_compile_definitions(sdl-build-options INTERFACE "SDL_BUILDING_WINRT=1")
target_compile_options(sdl-build-options INTERFACE "-ZW")
endif()
# CMake 3.0 expands the "if(${A})" in "set(OFF 1);set(A OFF);if(${A})" to "if(1)"
# CMake 3.24+ emits a warning when not set.
unset(OFF)
unset(ON)
if(POLICY CMP0054)
cmake_policy(SET CMP0054 NEW)
endif()
include(CheckLibraryExists)
include(CheckIncludeFile)
include(CheckLanguage)
include(CheckSymbolExists)
include(CheckCSourceCompiles)
include(CheckCSourceRuns)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
include(CheckStructHasMember)
include(CMakeDependentOption)
include(CMakeParseArguments)
include(CMakePushCheckState)
include(GNUInstallDirs)
find_package(PkgConfig)
list(APPEND CMAKE_MODULE_PATH "${SDL3_SOURCE_DIR}/cmake")
include(${SDL3_SOURCE_DIR}/cmake/macros.cmake)
include(${SDL3_SOURCE_DIR}/cmake/sdlchecks.cmake)
include(${SDL3_SOURCE_DIR}/cmake/sdlfind.cmake)
include(${SDL3_SOURCE_DIR}/cmake/sdlplatform.cmake)
include(${SDL3_SOURCE_DIR}/cmake/CheckCPUArchitecture.cmake)
include(${SDL3_SOURCE_DIR}/cmake/GetGitRevisionDescription.cmake)
include(${SDL3_SOURCE_DIR}/cmake/3rdparty.cmake)
# Enable large file support on 32-bit glibc, so that we can access files
# with large inode numbers
check_symbol_exists("__GLIBC__" "stdlib.h" LIBC_IS_GLIBC)
if (LIBC_IS_GLIBC AND CMAKE_SIZEOF_VOID_P EQUAL 4)
target_compile_definitions(sdl-build-options INTERFACE "_FILE_OFFSET_BITS=64")
endif()
if(CMAKE_VERSION VERSION_LESS "3.26")
set(build_local_interface "BUILD_INTERFACE")
else()
set(build_local_interface "BUILD_LOCAL_INTERFACE")
endif()
# Increment this if there is an incompatible change - but if that happens,
# we should rename the library from SDL3 to SDL4, at which point this would
# reset to 0 anyway.
set(SDL_SO_VERSION_MAJOR "0")
set(SDL_SO_VERSION_MINOR "${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_COMPAT_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}.${SDL_DYLIB_COMPAT_VERSION_PATCH}")
set(SDL_DYLIB_COMPAT_VERSION "${SDL_DYLIB_COMPAT_VERSION_MAJOR}.${SDL_DYLIB_COMPAT_VERSION_MINOR}.${SDL_DYLIB_COMPAT_VERSION_PATCH}")
#message("SDL_SO_VERSION=${SDL_SO_VERSION} SDL_DYLIB_CURRENT_VERSION=${SDL_DYLIB_CURRENT_VERSION} SDL_DYLIB_COMPAT_VERSION=${SDL_DYLIB_COMPAT_VERSION}")
set(SDL_FRAMEWORK_VERSION "A")
SDL_DetectCPUArchitecture()
# Check for 64 or 32 bit
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(ARCH_64 TRUE)
set(PROCESSOR_ARCH "x64")
else()
set(ARCH_64 FALSE)
set(PROCESSOR_ARCH "x86")
endif()
set(SDL_CHECK_REQUIRED_INCLUDES "" CACHE STRING "Extra includes (for CMAKE_REQUIRED_INCLUDES)")
set(SDL_CHECK_REQUIRED_LINK_OPTIONS "" CACHE STRING "Extra link options (for CMAKE_REQUIRED_LINK_OPTIONS)")
mark_as_advanced(SDL_CHECK_REQUIRED_INCLUDES SDL_CHECK_REQUIRED_LINK_OPTIONS)
set(CMAKE_REQUIRED_FLAGS "${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 with change to ON once this becomes
# commonly supported in browsers or the Emscripten teams makes a single
# binary work everywhere.
if (UNIX_OR_MAC_SYS AND NOT EMSCRIPTEN)
set(SDL_PTHREADS_ENABLED_BY_DEFAULT ON)
else()
set(SDL_PTHREADS_ENABLED_BY_DEFAULT OFF)
endif()
if(UNIX_SYS OR ANDROID)
set(SDL_CLOCK_GETTIME_ENABLED_BY_DEFAULT ON)
else()
set(SDL_CLOCK_GETTIME_ENABLED_BY_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.
# TODO: Windows can support libusb, the hid.c file just depends on Unix APIs
if((WINDOWS AND NOT WINDOWS_STORE) OR IOS OR TVOS OR ANDROID)
set(HIDAPI_SKIP_LIBUSB TRUE)
else()
set(HIDAPI_SKIP_LIBUSB FALSE)
endif()
# On the other hand, *BSD specifically uses libusb only, so we make a special
# case just for them.
if(FREEBSD OR NETBSD OR OPENBSD OR BSDI)
set(HIDAPI_ONLY_LIBUSB TRUE)
else()
set(HIDAPI_ONLY_LIBUSB FALSE)
endif()
# Compiler info
if(CMAKE_C_COMPILER_ID MATCHES "Clang|IntelLLVM")
set(USE_CLANG TRUE)
set(SDL_ASSEMBLY_DEFAULT TRUE)
# Visual Studio 2019 v16.2 added support for Clang/LLVM.
# Check if a Visual Studio project is being generated with the Clang toolset.
if(MSVC)
set(MSVC_CLANG TRUE)
endif()
elseif(CMAKE_COMPILER_IS_GNUCC)
set(USE_GCC TRUE)
set(SDL_ASSEMBLY_DEFAULT TRUE)
elseif(MSVC_VERSION GREATER 1400) # VisualStudio 8.0+
set(SDL_ASSEMBLY_DEFAULT TRUE)
elseif(CMAKE_C_COMPILER_ID MATCHES "^Intel$")
set(SDL_ASSEMBLY_DEFAULT TRUE)
set(USE_INTELCC TRUE)
elseif(CMAKE_C_COMPILER_ID MATCHES "QCC")
set(USE_QCC TRUE)
else()
set(SDL_ASSEMBLY_DEFAULT FALSE)
endif()
if(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QCC)
set(OPT_DEF_GCC_ATOMICS ON)
endif()
# Default option knobs
set(SDL_LIBC_DEFAULT ON)
set(SDL_SYSTEM_ICONV_DEFAULT ON)
if(WINDOWS)
set(SDL_LIBC_DEFAULT OFF)
set(SDL_SYSTEM_ICONV_DEFAULT OFF)
endif()
if(NOT ("$ENV{CFLAGS}" STREQUAL ""))
if(CMAKE_VERSION VERSION_LESS 3.11.0)
message(WARNING "SDL's CMakeLists.txt no longer checks the CFLAGS environment.")
message(WARNING "Please use CMake's CMAKE_C_FLAGS and CMAKE_BUILD_TYPE variables directly.")
message(WARNING "Or upgrade to CMake >= 3.11.0, which respects the CFLAGS environment var.")
endif()
endif()
# Build in parallel under Visual Studio. Not enabled by default.
if(MSVC AND NOT USE_CLANG)
target_compile_options(sdl-build-options INTERFACE "/MP")
endif()
if(MSVC)
option(SDL_FORCE_STATIC_VCRT "Force /MT for static VC runtimes" OFF)
if(SDL_FORCE_STATIC_VCRT)
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
if(${flag_var} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
endif()
endforeach()
endif()
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" ${flag_var} "${${flag_var}}")
endforeach(flag_var)
endif()
endif()
# Those are used for pkg-config so sdl3.pc is created correctly.
set(SDL_PC_LIBS "-lSDL3")
set(SDL_PC_CFLAGS )
# When building shared lib for Windows with MinGW,
# avoid the DLL having a "lib" prefix
if(WINDOWS)
set(CMAKE_SHARED_LIBRARY_PREFIX "")
endif()
check_linker_flag(C "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/src/dynapi/SDL_dynapi.sym" HAVE_WL_VERSION_SCRIPT)
if(HAVE_WL_VERSION_SCRIPT)
target_link_libraries(sdl-shared-build-options INTERFACE "-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
target_include_directories(sdl-build-options SYSTEM INTERFACE "/usr/include/mingw")
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mno-cygwin")
check_c_source_compiles("int main(int argc, char **argv) { return 0; }"
HAVE_GCC_NO_CYGWIN)
cmake_pop_check_state()
if(HAVE_GCC_NO_CYGWIN)
target_link_libraries(sdl-shared-build-options INTERFACE "-mno-cygwin")
endif()
list(APPEND SDL_PC_CFLAGS "-I/usr/include/mingw")
endif()
# General includes
target_compile_definitions(sdl-build-options INTERFACE "USING_GENERATED_CONFIG_H")
target_include_directories(sdl-build-options
INTERFACE
"${SDL3_BINARY_DIR}/include-config-$<LOWER_CASE:$<CONFIG>>"
"${SDL3_BINARY_DIR}/include"
"${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))
if(CMAKE_VERSION VERSION_LESS 3.12)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -idirafter \"${SDL3_SOURCE_DIR}/src/video/khronos\"")
else()
target_compile_options(sdl-global-options INTERFACE "SHELL:-idirafter \"${SDL3_SOURCE_DIR}/src/video/khronos\"")
endif()
else()
target_include_directories(sdl-global-options SYSTEM INTERFACE "${SDL3_SOURCE_DIR}/src/video/khronos")
endif()
set(SDL_SHARED_ENABLED_BY_DEFAULT ON)
set(SDL_STATIC_ENABLED_BY_DEFAULT ON)
# All these ENABLED_BY_DEFAULT vars will default to ON if not specified, so
# you only need to have a platform override them if they are disabling.
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.
# SDL_THREADS_ENABLED_BY_DEFAULT now defaults to ON, but pthread support might be disabled by default.
# !!! FIXME: most of these subsystems should default to ON if there are dummy implementations to be used.
set(SDL_ASSEMBLY_DEFAULT FALSE)
set(SDL_SHARED_ENABLED_BY_DEFAULT OFF)
set(SDL_ATOMIC_ENABLED_BY_DEFAULT OFF)
set(SDL_LOADSO_ENABLED_BY_DEFAULT OFF)
set(SDL_CPUINFO_ENABLED_BY_DEFAULT OFF)
endif()
if(VITA OR PSP OR PS2 OR N3DS OR RISCOS)
set(SDL_SHARED_ENABLED_BY_DEFAULT OFF)
set(SDL_LOADSO_ENABLED_BY_DEFAULT OFF)
endif()
if(SDL_SHARED_ENABLED_BY_DEFAULT AND SDL_STATIC_ENABLED_BY_DEFAULT)
if(DEFINED BUILD_SHARED_LIBS)
# When defined, use BUILD_SHARED_LIBS as default
if(BUILD_SHARED_LIBS)
set(SDL_STATIC_ENABLED_BY_DEFAULT OFF)
else()
set(SDL_SHARED_ENABLED_BY_DEFAULT OFF)
endif()
else()
# Default to just building the shared library
set(SDL_STATIC_ENABLED_BY_DEFAULT OFF)
endif()
endif()
set(LONGESTOPTIONNAME 0) # set_option and friends will change this.
set(SDL_SUBSYSTEMS
Atomic Audio Video Render Events Joystick Haptic Hidapi Power Threads Timers
File Loadso CPUinfo Filesystem Sensor Locale Misc)
foreach(_SUB ${SDL_SUBSYSTEMS})
string(TOUPPER ${_SUB} _OPT)
if (NOT DEFINED SDL_${_OPT}_ENABLED_BY_DEFAULT)
set(SDL_${_OPT}_ENABLED_BY_DEFAULT ON)
endif()
option(SDL_${_OPT} "Enable the ${_SUB} subsystem" ${SDL_${_OPT}_ENABLED_BY_DEFAULT})
endforeach()
# Allow some projects to be built conditionally.
set_option(SDL_DISABLE_INSTALL "Disable installation of SDL3" ${SDL3_SUBPROJECT})
cmake_dependent_option(SDL_DISABLE_INSTALL_CPACK "Create binary SDL3 archive using CPack" ${SDL3_SUBPROJECT} "NOT SDL_DISABLE_INSTALL" ON)
cmake_dependent_option(SDL_DISABLE_INSTALL_MAN "Install man pages for SDL3" ${SDL3_SUBPROJECT} "NOT SDL_DISABLE_INSTALL;NOT SDL_FRAMEWORK" ON)
set_option(SDL_DISABLE_UNINSTALL "Disable uninstallation of SDL3" OFF)
option_string(SDL_ASSERTIONS "Enable internal sanity checks (auto/disabled/release/enabled/paranoid)" "auto")
#set_option(SDL_DEPENDENCY_TRACKING "Use gcc -MMD -MT dependency tracking" ON)
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_ARMSIMD "Use SIMD assembly blitters on ARM" OFF "SDL_ASSEMBLY;SDL_CPU_ARM32" OFF)
dep_option(SDL_ARMNEON "Use NEON assembly blitters on ARM" OFF "SDL_ASSEMBLY;SDL_CPU_ARM32" 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_GCC_ATOMICS "Use gcc builtin atomics" ${OPT_DEF_GCC_ATOMICS})
dep_option(SDL_DBUS "Enable D-Bus support" ON ${UNIX_SYS} OFF)
set_option(SDL_DISKAUDIO "Support the disk writer audio driver" ON)
set_option(SDL_DUMMYAUDIO "Support the dummy audio driver" ON)
set_option(SDL_DUMMYVIDEO "Use dummy video driver" ON)
dep_option(SDL_IBUS "Enable IBus support" ON ${UNIX_SYS} OFF)
set_option(SDL_OPENGL "Include OpenGL support" ON)
set_option(SDL_OPENGLES "Include OpenGL ES support" ON)
set_option(SDL_PTHREADS "Use POSIX threads for multi-threading" ${SDL_PTHREADS_ENABLED_BY_DEFAULT})
dep_option(SDL_PTHREADS_SEM "Use pthread semaphores" ON "SDL_PTHREADS" OFF)
dep_option(SDL_OSS "Support the OSS audio API" ON "UNIX_SYS OR RISCOS" OFF)
set_option(SDL_ALSA "Support the ALSA audio API" ${UNIX_SYS})
dep_option(SDL_ALSA_SHARED "Dynamically load ALSA audio support" ON "SDL_ALSA" OFF)
set_option(SDL_JACK "Support the JACK audio API" ${UNIX_SYS})
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)
set_option(SDL_PULSEAUDIO "Use PulseAudio" ${UNIX_SYS})
dep_option(SDL_PULSEAUDIO_SHARED "Dynamically load PulseAudio support" ON "SDL_PULSEAUDIO" OFF)
set_option(SDL_SNDIO "Support the sndio audio API" ${UNIX_SYS})
dep_option(SDL_SNDIO_SHARED "Dynamically load the sndio audio API" ON "SDL_SNDIO" OFF)
set_option(SDL_LIBSAMPLERATE "Use libsamplerate for audio rate conversion" ${UNIX_SYS})
dep_option(SDL_LIBSAMPLERATE_SHARED "Dynamically load libsamplerate" ON "SDL_LIBSAMPLERATE" OFF)
set_option(SDL_RPATH "Use an rpath when linking SDL" ${UNIX_SYS})
set_option(SDL_CLOCK_GETTIME "Use clock_gettime() instead of gettimeofday()" ${SDL_CLOCK_GETTIME_ENABLED_BY_DEFAULT})
set_option(SDL_X11 "Use X11 video driver" ${UNIX_SYS})
dep_option(SDL_X11_SHARED "Dynamically load X11 support" ON "SDL_X11" OFF)
set(SDL_X11_OPTIONS Xcursor Xdbe XInput Xfixes Xrandr Xscrnsaver XShape)
foreach(_SUB ${SDL_X11_OPTIONS})
string(TOUPPER "SDL_X11_${_SUB}" _OPT)
dep_option(${_OPT} "Enable ${_SUB} support" ON "SDL_X11" OFF)
endforeach()
set_option(SDL_WAYLAND "Use Wayland video driver" ${UNIX_SYS})
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_WAYLAND_QT_TOUCH "QtWayland server support for Wayland video driver" ON "SDL_WAYLAND" OFF)
set_option(SDL_RPI "Use Raspberry Pi video driver" ${UNIX_SYS})
set_option(SDL_ROCKCHIP "Use ROCKCHIP Hardware Acceleration video driver" ${UNIX_SYS})
set_option(SDL_COCOA "Use Cocoa video driver" ${APPLE})
set_option(SDL_DIRECTX "Use DirectX for Windows audio/video" ${WINDOWS})
set_option(SDL_XINPUT "Use Xinput for Windows" ${WINDOWS})
set_option(SDL_WASAPI "Use the Windows WASAPI audio driver" ${WINDOWS})
set_option(SDL_RENDER_D3D "Enable the Direct3D render driver" ${WINDOWS})
set_option(SDL_RENDER_METAL "Enable the Metal render driver" ${APPLE})
set_option(SDL_VIVANTE "Use Vivante EGL video driver" ${UNIX_SYS})
dep_option(SDL_VULKAN "Enable Vulkan support" ON "ANDROID OR APPLE OR LINUX OR WINDOWS" OFF)
set_option(SDL_METAL "Enable Metal support" ${APPLE})
set_option(SDL_KMSDRM "Use KMS DRM video driver" ${UNIX_SYS})
dep_option(SDL_KMSDRM_SHARED "Dynamically load KMS DRM support" ON "SDL_KMSDRM" OFF)
set_option(SDL_OFFSCREEN "Use offscreen video driver" ON)
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)
set_option(SDL_HIDAPI "Enable the HIDAPI subsystem" ON)
dep_option(SDL_HIDAPI_LIBUSB "Use libusb for low level joystick drivers" OFF SDL_HIDAPI 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)
option_string(SDL_VENDOR_INFO "Vendor name and/or version to add to SDL_REVISION" "")
set_option(SDL_CCACHE "Use Ccache to speed up build" OFF)
set_option(SDL_CLANG_TIDY "Run clang-tidy static analysis" OFF)
option(SDL_WERROR "Enable -Werror" OFF)
option(SDL_SHARED "Build a shared version of the library" ${SDL_SHARED_ENABLED_BY_DEFAULT})
option(SDL_STATIC "Build a static version of the library" ${SDL_STATIC_ENABLED_BY_DEFAULT})
option(SDL_TEST "Build the SDL3_test library" ON)
# Apple Frameworks NEED a (shared) SDL3.framework for `#include <SDL3/xxx.h>` to work
cmake_dependent_option(SDL_FRAMEWORK "Build SDL libraries as Apple Framework" OFF "SDL_SHARED;APPLE" OFF)
dep_option(SDL_STATIC_PIC "Static version of the library should be built with Position Independent Code" "${CMAKE_POSITION_INDEPENDENT_CODE}" "SDL_STATIC" OFF)
dep_option(SDL_TESTS "Build the test directory" OFF SDL_TEST OFF)
dep_option(SDL_INSTALL_TESTS "Install test-cases" OFF "NOT SDL_DISABLE_INSTALL;NOT SDL_FRAMEWORK" OFF)
set(HAVE_STATIC_PIC "${SDL_STATIC_PIC}")
if(SDL_HIDAPI)
if(HIDAPI_ONLY_LIBUSB)
set(SDL_HIDAPI_LIBUSB ON CACHE BOOL "" FORCE)
elseif(HIDAPI_SKIP_LIBUSB)
set(SDL_HIDAPI_LIBUSB OFF CACHE BOOL "" FORCE)
endif()
endif()
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()
# General source files
file(GLOB SOURCE_FILES
${SDL3_SOURCE_DIR}/src/*.c
${SDL3_SOURCE_DIR}/src/atomic/*.c
${SDL3_SOURCE_DIR}/src/audio/*.c
${SDL3_SOURCE_DIR}/src/core/*.c
${SDL3_SOURCE_DIR}/src/cpuinfo/*.c
${SDL3_SOURCE_DIR}/src/dynapi/*.c
${SDL3_SOURCE_DIR}/src/events/*.c
${SDL3_SOURCE_DIR}/src/file/*.c
${SDL3_SOURCE_DIR}/src/joystick/*.c
${SDL3_SOURCE_DIR}/src/haptic/*.c
${SDL3_SOURCE_DIR}/src/hidapi/*.c
${SDL3_SOURCE_DIR}/src/libm/*.c
${SDL3_SOURCE_DIR}/src/locale/*.c
${SDL3_SOURCE_DIR}/src/misc/*.c
${SDL3_SOURCE_DIR}/src/power/*.c
${SDL3_SOURCE_DIR}/src/render/*.c
${SDL3_SOURCE_DIR}/src/render/*/*.c
${SDL3_SOURCE_DIR}/src/sensor/*.c
${SDL3_SOURCE_DIR}/src/stdlib/*.c
${SDL3_SOURCE_DIR}/src/thread/*.c
${SDL3_SOURCE_DIR}/src/timer/*.c
${SDL3_SOURCE_DIR}/src/video/*.c
${SDL3_SOURCE_DIR}/src/video/yuv2rgb/*.c)
if(USE_INTELCC)
# warning #39: division by zero
# warning #239: floating point underflow
# warning #264: floating-point value does not fit in required floating-point type
set_property(SOURCE "${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_error("unknown assertion level")
endif()
set(HAVE_ASSERTIONS ${SDL_ASSERTIONS})
if(NOT SDL_BACKGROUNDING_SIGNAL STREQUAL "OFF")
target_compile_definitions(sdl-build-options INTERFACE "SDL_BACKGROUNDING_SIGNAL=${SDL_BACKGROUNDING_SIGNAL}")
endif()
if(NOT SDL_FOREGROUNDING_SIGNAL STREQUAL "OFF")
target_compile_definitions(sdl-build-options INTERFACE "SDL_FOREGROUNDING_SIGNAL=${SDL_FOREGROUNDING_SIGNAL}")
endif()
# Compiler option evaluation
if(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QCC)
# Check for -Wall first, so later things can override pieces of it.
# Note: clang-cl treats -Wall as -Weverything (which is very loud),
# /W3 as -Wall, and /W4 as -Wall -Wextra. So: /W3 is enough.
check_c_compiler_flag(-Wall HAVE_GCC_WALL)
if(MSVC_CLANG)
target_compile_options(sdl-global-options INTERFACE "/W3")
elseif(HAVE_GCC_WALL)
target_compile_options(sdl-global-options INTERFACE "-Wall")
if(HAIKU)
target_compile_options(sdl-global-options INTERFACE "-Wno-multichar")
endif()
endif()
check_c_compiler_flag(-fno-strict-aliasing HAVE_GCC_NO_STRICT_ALIASING)
if(HAVE_GCC_NO_STRICT_ALIASING)
target_compile_options(sdl-global-options INTERFACE "-fno-strict-aliasing")
endif()
# command-line option ‘-Wdeclaration-after-statement’ is valid for C/ObjC but not for C++
check_c_compiler_flag(-Wdeclaration-after-statement HAVE_GCC_WDECLARATION_AFTER_STATEMENT)
if(HAVE_GCC_WDECLARATION_AFTER_STATEMENT)
if(SDL_WERROR)
check_c_compiler_flag(-Werror=declaration-after-statement HAVE_GCC_WERROR_DECLARATION_AFTER_STATEMENT)
if(HAVE_GCC_WERROR_DECLARATION_AFTER_STATEMENT)
if(CMAKE_VERSION VERSION_LESS 3.3)
target_compile_options(sdl-global-options INTERFACE "-Werror=declaration-after-statement")
else()
target_compile_options(sdl-global-options INTERFACE "$<$<COMPILE_LANGUAGE:C>:-Werror=declaration-after-statement>")
if(CMAKE_OBJC_COMPILER)
target_compile_options(sdl-global-options INTERFACE "$<$<COMPILE_LANGUAGE:OBJC>:-Werror=declaration-after-statement>")
endif()
endif()
endif()
endif()
if(CMAKE_VERSION VERSION_LESS 3.3)
target_compile_options(sdl-global-options INTERFACE "-Wdeclaration-after-statement")
else()
target_compile_options(sdl-global-options INTERFACE "$<$<COMPILE_LANGUAGE:C>:-Wdeclaration-after-statement>")
if(CMAKE_OBJC_COMPILER)
target_compile_options(sdl-global-options INTERFACE "$<$<COMPILE_LANGUAGE:OBJC>:-Wdeclaration-after-statement>")
endif()
endif()
endif()
check_c_compiler_flag(-Wdocumentation HAVE_GCC_WDOCUMENTATION)
if(HAVE_GCC_WDOCUMENTATION)
if(SDL_WERROR)
check_c_compiler_flag(-Werror=documentation HAVE_GCC_WERROR_DOCUMENTATION)
if(HAVE_GCC_WERROR_DOCUMENTATION)
target_compile_options(sdl-global-options INTERFACE "-Werror=documentation")
endif()
endif()
target_compile_options(sdl-global-options INTERFACE "-Wdocumentation")
endif()
check_c_compiler_flag(-Wdocumentation-unknown-command HAVE_GCC_WDOCUMENTATION_UNKNOWN_COMMAND)
if(HAVE_GCC_WDOCUMENTATION_UNKNOWN_COMMAND)
if(SDL_WERROR)
check_c_compiler_flag(-Werror=documentation-unknown-command HAVE_GCC_WERROR_DOCUMENTATION_UNKNOWN_COMMAND)
if(HAVE_GCC_WERROR_DOCUMENTATION_UNKNOWN_COMMAND)
target_compile_options(sdl-global-options INTERFACE "-Werror=documentation-unknown-command")
endif()
endif()
target_compile_options(sdl-global-options INTERFACE "-Wdocumentation-unknown-command")
endif()
check_c_compiler_flag(-fcomment-block-commands=threadsafety HAVE_GCC_COMMENT_BLOCK_COMMANDS)
if(HAVE_GCC_COMMENT_BLOCK_COMMANDS)
target_compile_options(sdl-global-options INTERFACE "-fcomment-block-commands=threadsafety")
else()
check_c_compiler_flag(/clang:-fcomment-block-commands=threadsafety HAVE_CLANG_COMMENT_BLOCK_COMMANDS)
if(HAVE_CLANG_COMMENT_BLOCK_COMMANDS)
target_compile_options(sdl-global-options INTERFACE "/clang:-fcomment-block-commands=threadsafety")
endif()
endif()
if(DEPENDENCY_TRACKING)
check_c_source_compiles("
#if !defined(__GNUC__) || __GNUC__ < 3
#error Dependency tracking requires GCC 3.0 or newer
#endif
int main(int argc, char **argv) { return 0; }" HAVE_DEPENDENCY_TRACKING)
endif()
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; }" HAVE_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; }" HAVE_GCC_SYNC_LOCK_TEST_AND_SET)
endif()
endif()
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${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()
check_c_compiler_flag(-Wshadow HAVE_GCC_WSHADOW)
if(HAVE_GCC_WSHADOW)
target_compile_options(sdl-global-options INTERFACE "-Wshadow")
endif()
if(APPLE)
cmake_push_check_state()
# FIXME: don't use deprecated declarations
check_c_compiler_flag(-Wno-error=deprecated-declarations HAVE_WNO_ERROR_DEPRECATED_DECLARATIONS)
if(HAVE_WNO_ERROR_DEPRECATED_DECLARATIONS)
target_compile_options(sdl-build-options INTERFACE "-Wno-error=deprecated-declarations")
endif()
cmake_pop_check_state()
if(CMAKE_VERSION VERSION_LESS "3.6")
target_link_libraries(sdl-shared-build-options INTERFACE "-Wl,-compatibility_version,${SDL_DYLIB_COMPAT_VERSION}")
target_link_libraries(sdl-shared-build-options INTERFACE "-Wl,-current_version,${SDL_DYLIB_CURRENT_VERSION}")
endif()
elseif(NOT OPENBSD)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Wl,--no-undefined")
check_c_compiler_flag("" HAVE_NO_UNDEFINED)
cmake_pop_check_state()
if(HAVE_NO_UNDEFINED AND NOT (USE_CLANG AND WINDOWS))
target_link_libraries(sdl-shared-build-options INTERFACE "-Wl,--no-undefined")
endif()
endif()
if(MINGW)
# See if GCC's -gdwarf-4 is supported
# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101377 for why this is needed on Windows
cmake_push_check_state()
check_c_compiler_flag("-gdwarf-4" HAVE_GDWARF_4)
if(HAVE_GDWARF_4)
target_compile_options(sdl-global-options INTERFACE "-gdwarf-4")
endif()
cmake_pop_check_state()
endif()
# Force color diagnostics when one of these conditions are met
if(DEFINED ENV{CI} OR DEFINED ENV{USE_CCACHE} OR CMAKE_GENERATOR MATCHES Ninja)
if(EMSCRIPTEN OR (USE_GCC AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.9))
target_compile_options(sdl-global-options INTERFACE -fdiagnostics-color=always)
elseif(USE_CLANG AND NOT CMAKE_C_COMPILER_ID MATCHES AppleClang)
target_compile_options(sdl-global-options INTERFACE -fcolor-diagnostics)
endif()
endif()
endif()
if(MSVC)
target_compile_definitions(sdl-build-options INTERFACE "_CRT_SECURE_NO_DEPRECATE")
target_compile_definitions(sdl-build-options INTERFACE "_CRT_NONSTDC_NO_DEPRECATE")
target_compile_definitions(sdl-build-options INTERFACE "_CRT_SECURE_NO_WARNINGS")
# CET support was added in VS 16.7
if(MSVC_VERSION GREATER 1926 AND CMAKE_GENERATOR_PLATFORM MATCHES "Win32|x64")
target_link_libraries(sdl-shared-build-options INTERFACE "-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 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)
set(CMAKE_REQUIRED_FLAGS "${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)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -msse")
endif()
check_c_source_compiles("
#include <xmmintrin.h>
void floats_add(float *dest, float *a, float *b, unsigned size) {
for (; size >= 4; size -= 4, dest += 4, a += 4, b += 4) {
_mm_storeu_ps(dest, _mm_add_ps(_mm_loadu_ps(a), _mm_loadu_ps (b)));
}
}
int main(int argc, char **argv) {
floats_add((float*)0, (float*)0, (float*)0, 0);
return 0;
}" COMPILER_SUPPORTS_SSE)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_SSE)
set(HAVE_SSE TRUE)
endif()
endif()
if(SDL_SSE2)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
set(CMAKE_REQUIRED_FLAGS "${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)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -msse3")
endif()
check_c_source_compiles("
#include <pmmintrin.h>
void ints_add(int *dest, int *a, int *b, unsigned size) {
for (; size >= 4; size -= 4, dest += 4, a += 4, b += 4) {
_mm_storeu_si128((__m128i*)dest, _mm_add_epi32(_mm_lddqu_si128((__m128i*)a), _mm_lddqu_si128((__m128i*)b)));
}
}
int main(int argc, char **argv) {
ints_add((int*)0, (int*)0, (int*)0, 0);
return 0;
}" COMPILER_SUPPORTS_SSE3)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_SSE3)
set(HAVE_SSE3 TRUE)
endif()
endif()
if(SDL_SSE4_1)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
set(CMAKE_REQUIRED_FLAGS "${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)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -msse4.2")
endif()
check_c_source_compiles("
#include <nmmintrin.h>
unsigned calc_crc32c(const char *text, unsigned len) {
unsigned crc32c = ~0;
for (; len >= 4; len -= 4, text += 4) {
crc32c = (unsigned)_mm_crc32_u32(crc32c, *(unsigned*)text);
}
return crc32c;
}
int main(int argc, char **argv) {
calc_crc32c(\"SDL_SSE4\",8);
return 0;
}" COMPILER_SUPPORTS_SSE4_2)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_SSE4_2)
set(HAVE_SSE4_2 TRUE)
endif()
endif()
if(SDL_AVX)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
set(CMAKE_REQUIRED_FLAGS "${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)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mavx2")
endif()
check_c_source_compiles("
#include <immintrin.h>
void ints_add(int *dest, int *a, int *b, unsigned size) {
for (; size >= 8; size -= 8, dest += 8, a += 8, b += 8) {
_mm256_storeu_si256((__m256i*)dest, _mm256_add_epi32(_mm256_loadu_si256((__m256i*)a), _mm256_loadu_si256((__m256i*)b)));
}
}
int main(int argc, char **argv) {
ints_add((int*)0, (int*)0, (int*)0, 0);
return 0;
}" COMPILER_SUPPORTS_AVX2)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_AVX2)
set(HAVE_AVX2 TRUE)
endif()
endif()
if(SDL_AVX512F)
cmake_push_check_state()
if(USE_GCC OR USE_CLANG OR USE_INTELCC)
set(CMAKE_REQUIRED_FLAGS "${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(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()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -maltivec")
check_c_source_compiles("
#include <altivec.h>
vector unsigned int vzero() {
return vec_splat_u32(0);
}
int main(int argc, char **argv) { return 0; }" COMPILER_SUPPORTS_ALTIVEC)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_ALTIVEC)
set(HAVE_ALTIVEC TRUE)
set(SDL_ALTIVEC_BLITTERS 1)
target_compile_options(sdl-build-options INTERFACE "-maltivec")
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/video/SDL_blit_N.c" APPEND PROPERTY COMPILE_DEFINITIONS "SDL_ENABLE_ALTIVEC")
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/video/SDL_blit_N.c" PROPERTY SKIP_PRECOMPILE_HEADERS 1)
endif()
endif()
if(SDL_LSX)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${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)
target_compile_options(sdl-build-options INTERFACE "-mlsx")
set(HAVE_LSX TRUE)
endif()
endif()
if(SDL_LASX)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mlasx")
check_c_source_compiles("
#ifndef __loongarch_asx
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" COMPILER_SUPPORTS_LASX)
check_include_file("lasxintrin.h" HAVE_LASXINTRIN_H)
cmake_pop_check_state()
if(COMPILER_SUPPORTS_LASX AND HAVE_LASXINTRIN_H)
target_compile_options(sdl-build-options INTERFACE "-mlasx")
set(HAVE_LASX TRUE)
endif()
endif()
if(SDL_ARMSIMD)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -x assembler-with-cpp")
list(APPEND CMAKE_REQUIRED_LINK_OPTIONS -x none)
check_c_source_compiles("
.text
.arch armv6
.object_arch armv4
.arm
.altmacro
#ifndef __ARM_EABI__
#error EABI is required (to be sure that calling conventions are compatible)
#endif
main:
.global main
pld [r0]
uqadd8 r0, r0, r0
" ARMSIMD_FOUND)