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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 ${CMAKE_SOURCE_DIR} -B .\" from there")
endif()
# See docs/release_checklist.md
project(SDL3 LANGUAGES C CXX VERSION "3.0.0")
if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
set(SDL3_SUBPROJECT OFF)
else()
set(SDL3_SUBPROJECT ON)
endif()
set(SDL_EXTRA_LIBS)
set(SDL_EXTRA_LDFLAGS)
set(SDL_CMAKE_DEPENDS)
set(SDL_PC_PRIVATE_REQUIRES)
# The sdl-build-options interface library collects all PRIVATE build options for the SDL libraries
add_library(sdl-build-options INTERFACE)
# The sdl-shared-build-options interface library collects all PRIVATE build options for the SDL shared library
add_library(sdl-shared-build-options INTERFACE)
# The sdl-global-options interface library collects all PRIVATE build options for the SDL libraries + test + ...
add_library(sdl-global-options INTERFACE)
if(WINDOWS_STORE)
target_compile_definitions(sdl-build-options INTERFACE "SDL_BUILDING_WINRT=1")
target_compile_options(sdl-build-options INTERFACE "-ZW")
endif()
# Build in parallel under Visual Studio. Not enabled by default.
if(MSVC)
target_compile_options(sdl-build-options INTERFACE "/MP")
endif()
# CMake 3.0 expands the "if(${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")
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)
else()
set(SDL_ASSEMBLY_DEFAULT FALSE)
endif()
if(USE_GCC OR USE_CLANG)
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()
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_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()
# 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)
set(SDL_SHARED_ENABLED_BY_DEFAULT OFF)
set(SDL_LOADSO_ENABLED_BY_DEFAULT OFF)
endif()
# When defined, respect CMake's BUILD_SHARED_LIBS setting:
set(SDL_STATIC_ENABLED_BY_DEFAULT ON)
if (NOT DEFINED SDL_SHARED_ENABLED_BY_DEFAULT)
# ...unless decided already (as for EMSCRIPTEN)
set(SDL_SHARED_ENABLED_BY_DEFAULT OFF)
if (NOT DEFINED BUILD_SHARED_LIBS)
# No preference? Build both, just like the AC/AM configure
set(SDL_SHARED_ENABLED_BY_DEFAULT ON)
elseif (BUILD_SHARED_LIBS)
# In this case, we assume the user wants a shared lib and don't build
# the static one
set(SDL_SHARED_ENABLED_BY_DEFAULT ON)
set(SDL_STATIC_ENABLED_BY_DEFAULT OFF)
endif()
endif()
if (NOT DEFINED SDL_TEST_ENABLED_BY_DEFAULT)
set(SDL_TEST_ENABLED_BY_DEFAULT ON)
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" OFF)
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_SSEMATH "Allow GCC to use SSE floating point math" 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_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" 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" ON)
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" ${SDL_TEST_ENABLED_BY_DEFAULT})
# Apple Frameworks NEED a (shared) SDL3.framework for `#include <SDL3/xxx.h>` to work
cmake_dependent_option(SDL_FRAMEWORK "Build SDL libraries as Apple Framework" OFF "SDL_SHARED;APPLE" OFF)
dep_option(SDL_STATIC_PIC "Static version of the library should be built with Position Independent Code" "${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
${SDL3_SOURCE_DIR}/src/video/yuv2rgb/*.c)
set(SDL_DEFAULT_ASSERT_LEVEL_CONFIGURED 1)
if(SDL_ASSERTIONS MATCHES "^(auto|)$")
# 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=${SDL_FOREGROUNDING_SIGNAL}")
endif()
# Compiler option evaluation
if(USE_GCC OR USE_CLANG)
# Check for -Wall first, so later things can override pieces of it.
# Note: clang-cl treats -Wall as -Weverything (which is very loud),
# /W3 as -Wall, and /W4 as -Wall -Wextra. So: /W3 is enough.
check_c_compiler_flag(-Wall HAVE_GCC_WALL)
if(MSVC_CLANG)
target_compile_options(sdl-global-options INTERFACE "/W3")
elseif(HAVE_GCC_WALL)
target_compile_options(sdl-global-options INTERFACE "-Wall")
if(HAIKU)
target_compile_options(sdl-global-options INTERFACE "-Wno-multichar")
endif()
endif()
check_c_compiler_flag(-fno-strict-aliasing HAVE_GCC_NO_STRICT_ALIASING)
if(HAVE_GCC_NO_STRICT_ALIASING)
target_compile_options(sdl-global-options INTERFACE "-fno-strict-aliasing")
endif()
# command-line option ‘-Wdeclaration-after-statement’ is valid for C/ObjC but not for C++
check_c_compiler_flag(-Wdeclaration-after-statement HAVE_GCC_WDECLARATION_AFTER_STATEMENT)
if(HAVE_GCC_WDECLARATION_AFTER_STATEMENT)
if(SDL_WERROR)
check_c_compiler_flag(-Werror=declaration-after-statement HAVE_GCC_WERROR_DECLARATION_AFTER_STATEMENT)
if(HAVE_GCC_WERROR_DECLARATION_AFTER_STATEMENT)
if(CMAKE_VERSION VERSION_LESS 3.3)
target_compile_options(sdl-global-options INTERFACE "-Werror=declaration-after-statement")
else()
target_compile_options(sdl-global-options INTERFACE "$<$<COMPILE_LANGUAGE:C>:-Werror=declaration-after-statement>")
if(CMAKE_OBJC_COMPILER)
target_compile_options(sdl-global-options INTERFACE "$<$<COMPILE_LANGUAGE:OBJC>:-Werror=declaration-after-statement>")
endif()
endif()
endif()
endif()
if(CMAKE_VERSION VERSION_LESS 3.3)
target_compile_options(sdl-global-options INTERFACE "-Wdeclaration-after-statement")
else()
target_compile_options(sdl-global-options INTERFACE "$<$<COMPILE_LANGUAGE:C>:-Wdeclaration-after-statement>")
if(CMAKE_OBJC_COMPILER)
target_compile_options(sdl-global-options INTERFACE "$<$<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)
if(USE_GCC OR USE_CLANG)
# TODO: Those all seem to be quite GCC specific - needs to be
# reworked for better compiler support
set(HAVE_ASSEMBLY TRUE)
if(SDL_MMX)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mmmx")
check_c_source_compiles("
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <mmintrin.h>
#endif
#else
#include <mmintrin.h>
#endif
#ifndef __MMX__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" HAVE_MMX)
cmake_pop_check_state()
if(HAVE_MMX)
target_compile_options(sdl-build-options INTERFACE "-mmmx")
endif()
endif()
if(SDL_SSE)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -msse")
check_c_source_compiles("
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <xmmintrin.h>
#endif
#else
#include <xmmintrin.h>
#endif
#ifndef __SSE__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" CPU_SUPPORTS_SSE)
cmake_pop_check_state()
if(CPU_SUPPORTS_SSE)
set(HAVE_SSE ON)
target_compile_options(sdl-build-options INTERFACE "-msse")
endif()
endif()
if(SDL_SSE2)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -msse2")
check_c_source_compiles("
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <emmintrin.h>
#endif
#else
#include <emmintrin.h>
#endif
#ifndef __SSE2__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" CPU_SUPPORTS_SSE2)
cmake_pop_check_state()
if(CPU_SUPPORTS_SSE2)
set(HAVE_SSE2 TRUE)
target_compile_options(sdl-build-options INTERFACE "-msse2")
endif()
endif()
if(SDL_SSE3)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -msse3")
check_c_source_compiles("
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <pmmintrin.h>
#endif
#else
#include <pmmintrin.h>
#endif
#ifndef __SSE3__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" CPU_SUPPORTS_SSE3)
cmake_pop_check_state()
if(CPU_SUPPORTS_SSE3)
set(HAVE_SSE3 TRUE)
target_compile_options(sdl-build-options INTERFACE "-msse3")
endif()
endif()
if(NOT SDL_SSEMATH)
if(SDL_SSE OR SDL_SSE2 OR SDL_SSE3)
if(USE_GCC)
check_c_compiler_flag(-mfpmath=387 HAVE_FP_387)
if(HAVE_FP_387)
target_compile_options(sdl-build-options INTERFACE "-mfpmath=387")
endif()
endif()
endif()
else()
set(HAVE_SSEMATH TRUE)
endif()
check_include_file("immintrin.h" HAVE_IMMINTRIN_H)
if(SDL_ALTIVEC)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${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; }" HAVE_ALTIVEC_H_HDR)
check_c_source_compiles("
vector unsigned int vzero() {
return vec_splat_u32(0);
}
int main(int argc, char **argv) { return 0; }" CPU_SUPPORTS_ALTIVEC)
cmake_pop_check_state()
if(CPU_SUPPORTS_ALTIVEC OR HAVE_ALTIVEC_H_HDR)
set(HAVE_ALTIVEC TRUE) # if only HAVE_ALTIVEC_H_HDR is set
target_compile_options(sdl-build-options INTERFACE "-maltivec")
set(SDL_ALTIVEC_BLITTERS 1)
if(HAVE_ALTIVEC_H_HDR)
set(HAVE_ALTIVEC_H 1)
endif()
endif()
endif()
if(SDL_LSX)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mlsx")
check_c_source_compiles("
#ifndef __loongarch_sx
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" CPU_SUPPORTS_LSX)
check_include_file("lsxintrin.h" HAVE_LSXINTRIN_H)
cmake_pop_check_state()
if(CPU_SUPPORTS_LSX AND HAVE_LSXINTRIN_H)
target_compile_options(sdl-build-options INTERFACE "-mlsx")
set(HAVE_LSX TRUE)
endif()
endif()
if(SDL_LASX)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${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; }" CPU_SUPPORTS_LASX)
check_include_file("lasxintrin.h" HAVE_LASXINTRIN_H)
cmake_pop_check_state()
if(CPU_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")
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
pld [r0]
uqadd8 r0, r0, r0
" ARMSIMD_FOUND)
cmake_pop_check_state()
if(ARMSIMD_FOUND)
set(HAVE_ARMSIMD TRUE)
set(SDL_ARM_SIMD_BLITTERS 1)
file(GLOB ARMSIMD_SOURCES ${SDL3_SOURCE_DIR}/src/video/arm/pixman-arm-simd*.S)
list(APPEND SOURCE_FILES ${ARMSIMD_SOURCES})
set(WARN_ABOUT_ARM_SIMD_ASM_MIT TRUE)
endif()
endif()
if(SDL_ARMNEON)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -x assembler-with-cpp")
check_c_source_compiles("
.text
.fpu neon
.arch armv7a
.object_arch armv4
.eabi_attribute 10, 0
.arm
.altmacro
#ifndef __ARM_EABI__
#error EABI is required (to be sure that calling conventions are compatible)
#endif
pld [r0]
vmovn.u16 d0, q0
" ARMNEON_FOUND)
cmake_pop_check_state()
if(ARMNEON_FOUND)
set(HAVE_ARMNEON TRUE)
set(SDL_ARM_NEON_BLITTERS 1)
file(GLOB ARMNEON_SOURCES ${SDL3_SOURCE_DIR}/src/video/arm/pixman-arm-neon*.S)
list(APPEND SOURCE_FILES ${ARMNEON_SOURCES})
set(WARN_ABOUT_ARM_NEON_ASM_MIT TRUE)
endif()
endif()
elseif(MSVC_VERSION GREATER 1500)
# TODO: SDL_cpuinfo.h needs to support the user's configuration wish
# for MSVC - right now it is always activated
if(SDL_CPU_X86)
if(SDL_MMX)
set(HAVE_MMX TRUE)
endif()
endif()
if(SDL_SSE)
set(HAVE_SSE TRUE)
endif()
if(SDL_SSE2)
set(HAVE_SSE2 TRUE)
endif()
if(SDL_SSE3)
set(HAVE_SSE3 TRUE)
endif()
check_include_file("immintrin.h" HAVE_IMMINTRIN_H)
endif()
endif()
# TODO: Can't deactivate on FreeBSD? w/o LIBC, SDL_stdinc.h can't define
# anything.
if(SDL_LIBC)
if(WINDOWS AND NOT MINGW)
set(HAVE_LIBC TRUE)
check_include_file(stdint.h HAVE_STDINT_H)
foreach(_HEADER stdio.h string.h wchar.h ctype.h math.h limits.h)
string(TOUPPER "HAVE_${_HEADER}" _UPPER)
string(REPLACE "." "_" _HAVE_H ${_UPPER})
set(${_HAVE_H} 1)
endforeach()
set(HAVE_SIGNAL_H 1)
foreach(_FN
malloc calloc realloc free bsearch qsort abs memset memcpy memmove memcmp
wcslen _wcsdup wcsdup wcsstr wcscmp wcsncmp _wcsicmp _wcsnicmp
strlen _strrev _strupr _strlwr strchr strrchr strstr itoa _ltoa
_ultoa strtol strtoul strtoll strtod atoi atof strcmp strncmp
_stricmp _strnicmp sscanf
acos acosf asin asinf atan atanf atan2 atan2f ceil ceilf
copysign copysignf cos cosf exp expf fabs fabsf floor floorf fmod fmodf
log logf log10 log10f lround lroundf modf modff pow powf round roundf
scalbn scalbnf sin sinf sqrt sqrtf tan tanf trunc truncf)
string(TOUPPER ${_FN} _UPPER)
set(HAVE_${_UPPER} 1)
endforeach()
set(HAVE_ALLOCA 1)
else()
set(HAVE_LIBC TRUE)
set(headers_to_check
ctype.h
float.h
iconv.h
inttypes.h
limits.h