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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 ${CMAKE_SOURCE_DIR} -B .\" from there")
endif()
# MSVC runtime library flags are selected by an abstraction.
set(CMAKE_POLICY_DEFAULT_CMP0091 NEW)
cmake_minimum_required(VERSION 3.0.0...3.5)
project(SDL2 C CXX)
if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
set(SDL2_SUBPROJECT OFF)
else()
set(SDL2_SUBPROJECT ON)
endif()
if (HAIKU)
set(LINKER_LANGUAGE CXX)
endif()
set(EXTRA_LIBS)
set(EXTRA_LDFLAGS)
set(CMAKE_DEPENDS)
set(PKGCONFIG_DEPENDS)
# This is a virtual "library" that just exists to collect up compiler and
# linker options that used to be global to this CMake project. When you
# specify it as part of a real library's target_link_libraries(), that
# library will also gain all those build options too. This is meant to
# modularize old calls to the global add_definitions and include_directories,
# etc. See https://github.com/libsdl-org/SDL/issues/4150
add_library(sdl-build-options INTERFACE)
if(WINDOWS_STORE)
target_compile_definitions(sdl-build-options INTERFACE "-DSDL_BUILDING_WINRT=1")
target_compile_options(sdl-build-options INTERFACE "-ZW")
endif()
# CMake 3.0 expands the "if(${A})" in "set(OFF 1);set(A OFF);if(${A})" to "if(1)"
# CMake 3.24+ emits a warning when not set.
unset(OFF)
unset(ON)
if(POLICY CMP0054)
cmake_policy(SET CMP0054 NEW)
endif()
# !!! FIXME: this should probably do "MACOSX_RPATH ON" as a target property
# !!! FIXME: for the SDL2 shared library (so you get an
# !!! FIXME: install_name ("soname") of "@rpath/libSDL-whatever.dylib"
# !!! FIXME: instead of "/usr/local/lib/libSDL-whatever.dylib"), but I'm
# !!! FIXME: punting for now and leaving the existing behavior. Until this
# !!! FIXME: properly resolved, this line silences a warning in CMake 3.0+.
# !!! FIXME: remove it and this comment entirely once the problem is
# !!! FIXME: properly resolved.
#cmake_policy(SET CMP0042 OLD)
include(CheckLibraryExists)
include(CheckIncludeFiles)
include(CheckIncludeFile)
include(CheckLanguage)
include(CheckSymbolExists)
include(CheckCSourceCompiles)
include(CheckCSourceRuns)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
include(CheckStructHasMember)
include(CMakeDependentOption)
include(CMakePushCheckState)
include(GNUInstallDirs)
find_package(PkgConfig)
list(APPEND CMAKE_MODULE_PATH "${SDL2_SOURCE_DIR}/cmake")
include(${SDL2_SOURCE_DIR}/cmake/macros.cmake)
include(${SDL2_SOURCE_DIR}/cmake/sdlchecks.cmake)
include(${SDL2_SOURCE_DIR}/cmake/sdlplatform.cmake)
include(${SDL2_SOURCE_DIR}/cmake/CheckCPUArchitecture.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)
add_definitions(-D_FILE_OFFSET_BITS=64)
endif()
# See docs/release_checklist.md
set(SDL_MAJOR_VERSION 2)
set(SDL_MINOR_VERSION 29)
set(SDL_MICRO_VERSION 0)
set(SDL_VERSION "${SDL_MAJOR_VERSION}.${SDL_MINOR_VERSION}.${SDL_MICRO_VERSION}")
# Set defaults preventing destination file conflicts
set(SDL_CMAKE_DEBUG_POSTFIX "d"
CACHE STRING "Name suffix for debug builds")
mark_as_advanced(CMAKE_IMPORT_LIBRARY_SUFFIX SDL_CMAKE_DEBUG_POSTFIX)
# Calculate a libtool-like version number
math(EXPR SDL_BINARY_AGE "${SDL_MINOR_VERSION} * 100 + ${SDL_MICRO_VERSION}")
if(SDL_MINOR_VERSION MATCHES "[02468]$")
# Stable branch, 2.24.1 -> libSDL2-2.0.so.0.2400.1
set(SDL_INTERFACE_AGE ${SDL_MICRO_VERSION})
else()
# Development branch, 2.23.1 -> libSDL2-2.0.so.0.2301.0
set(SDL_INTERFACE_AGE 0)
endif()
# Increment this if there is an incompatible change - but if that happens,
# we should rename the library from SDL2 to SDL3, at which point this would
# reset to 0 anyway.
set(LT_MAJOR "0")
math(EXPR LT_AGE "${SDL_BINARY_AGE} - ${SDL_INTERFACE_AGE}")
math(EXPR LT_CURRENT "${LT_MAJOR} + ${LT_AGE}")
set(LT_REVISION "${SDL_INTERFACE_AGE}")
# For historical reasons, the library name redundantly includes the major
# version twice: libSDL2-2.0.so.0.
# TODO: in SDL 3, set the OUTPUT_NAME to plain SDL3, which will simplify
# it to libSDL3.so.0
set(LT_RELEASE "2.0")
set(LT_VERSION "${LT_MAJOR}.${LT_AGE}.${LT_REVISION}")
# The following should match the versions in the Xcode project file.
# Each version is 1 higher than you might expect, for compatibility
# with libtool: macOS ABI versioning is 1-based, unlike other platforms
# which are normally 0-based.
math(EXPR DYLIB_CURRENT_VERSION_MAJOR "${LT_MAJOR} + ${LT_AGE} + 1")
math(EXPR DYLIB_CURRENT_VERSION_MINOR "${LT_REVISION}")
set(DYLIB_CURRENT_VERSION "${DYLIB_CURRENT_VERSION_MAJOR}.${DYLIB_CURRENT_VERSION_MINOR}.0")
set(DYLIB_COMPATIBILITY_VERSION "${DYLIB_CURRENT_VERSION_MAJOR}.0.0")
# This list holds all generated headers.
# To avoid generating them twice, these are added to a dummy target on which all sdl targets depend.
set(SDL_GENERATED_HEADERS)
#message(STATUS "${LT_VERSION} :: ${LT_AGE} :: ${LT_REVISION} :: ${LT_CURRENT} :: ${LT_RELEASE}")
check_cpu_architecture(x86 SDL_CPU_X86)
check_cpu_architecture(x64 SDL_CPU_X64)
check_cpu_architecture(arm32 SDL_CPU_ARM32)
check_cpu_architecture(arm64 SDL_CPU_ARM64)
check_cpu_architecture(loongarch64 SDL_CPU_LOONGARCH64)
# Check for 64 or 32 bit
set(SIZEOF_VOIDP ${CMAKE_SIZEOF_VOID_P})
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(LIBNAME SDL2)
if(NOT LIBTYPE)
set(LIBTYPE SHARED)
endif()
# Get the platform
SDL_DetectCMakePlatform()
# Don't mistake osx 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(OPT_DEF_ASM 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(OPT_DEF_ASM TRUE)
elseif(MSVC_VERSION GREATER 1400) # VisualStudio 8.0+
set(OPT_DEF_ASM TRUE)
#set(CMAKE_C_FLAGS "/ZI /WX- /
elseif(CMAKE_C_COMPILER_ID MATCHES "^Intel$")
set(OPT_DEF_ASM TRUE)
set(USE_INTELCC TRUE)
elseif(CMAKE_C_COMPILER_ID MATCHES "QCC")
set(USE_QCC TRUE)
else()
set(OPT_DEF_ASM FALSE)
endif()
if(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QCC)
set(OPT_DEF_GCC_ATOMICS ON)
endif()
# Default option knobs
if(UNIX OR MINGW OR MSYS OR (USE_CLANG AND NOT WINDOWS) OR VITA OR PSP OR PS2 OR N3DS)
set(OPT_DEF_LIBC ON)
endif()
if(WINDOWS)
set(SDL_SYSTEM_ICONV_DEFAULT OFF)
else()
set(SDL_SYSTEM_ICONV_DEFAULT ON)
endif()
if(NOT ("$ENV{CFLAGS}" STREQUAL ""))
if(CMAKE_VERSION VERSION_LESS 3.11.0)
message(WARNING "SDL's CMakeLists.txt no longer checks the CFLAGS environment.")
message(WARNING "Please use CMake's CMAKE_C_FLAGS and CMAKE_BUILD_TYPE variables directly.")
message(WARNING "Or upgrade to CMake >= 3.11.0, which respects the CFLAGS environment var.")
endif()
endif()
# Build in parallel under Visual Studio. Not enabled by default.
if(MSVC AND NOT USE_CLANG)
target_compile_options(sdl-build-options INTERFACE "/MP")
endif()
if(MSVC)
option(SDL_FORCE_STATIC_VCRT "Force /MT for static VC runtimes" OFF)
if(SDL_FORCE_STATIC_VCRT)
if(NOT DEFINED CMAKE_MSVC_RUNTIME_LIBRARY)
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
endif()
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
if(${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" ${flag_var} "${${flag_var}}")
endforeach(flag_var)
endif()
endif()
# Those are used for pkg-config and friends, so that the sdl2.pc, sdl2-config,
# etc. are created correctly.
set(SDL_LIBS "-lSDL2")
set(SDL_CFLAGS )
# When building shared lib for Windows with MinGW,
# avoid the DLL having a "lib" prefix
if(WINDOWS)
set(CMAKE_SHARED_LIBRARY_PREFIX "")
endif()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_GNU_SOURCE=1")
# Emscripten toolchain has a nonempty default value for this, and the checks
# in this file need to change that, so remember the original value, and
# restore back to that afterwards. For check_function_exists() to work in
# Emscripten, this value must be at its default value.
set(ORIG_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
if(CYGWIN)
# We build SDL on cygwin without the UNIX emulation layer
target_include_directories(sdl-build-options INTERFACE "/usr/include/mingw")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mno-cygwin")
check_c_source_compiles("int main(int argc, char **argv) { return 0; }"
HAVE_GCC_NO_CYGWIN)
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
if(HAVE_GCC_NO_CYGWIN)
list(APPEND EXTRA_LDFLAGS_BUILD "-mno-cygwin")
list(APPEND SDL_LIBS "-mno-cygwin")
endif()
list(APPEND SDL_CFLAGS "-I/usr/include/mingw")
endif()
# General includes
target_compile_definitions(sdl-build-options INTERFACE "-DUSING_GENERATED_CONFIG_H")
target_include_directories(sdl-build-options BEFORE INTERFACE "${SDL2_BINARY_DIR}/include" "${SDL2_BINARY_DIR}/include-config-$<LOWER_CASE:$<CONFIG>>")
# Note: The clang toolset for Visual Studio does not support the '-idirafter' option.
if(USE_GCC OR (USE_CLANG AND NOT MSVC_CLANG))
# !!! FIXME: do we _need_ to mess with CMAKE_C_FLAGS here?
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -idirafter \"${SDL2_SOURCE_DIR}/src/video/khronos\"")
else()
target_include_directories(sdl-build-options INTERFACE "${SDL2_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(OPT_DEF_ASM 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(SDL2_DISABLE_SDL2MAIN "Disable building/installation of SDL2main" OFF)
set_option(SDL2_DISABLE_INSTALL "Disable installation of SDL2" ${SDL2_SUBPROJECT})
set_option(SDL2_DISABLE_UNINSTALL "Disable uninstallation of SDL2" 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" ${OPT_DEF_ASM})
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_3DNOW "Use 3Dnow! 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" ${OPT_DEF_LIBC})
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_DIRECTFB "Use DirectFB video driver" OFF)
dep_option(SDL_DIRECTFB_SHARED "Dynamically load directfb support" ON "SDL_DIRECTFB" OFF)
set_option(SDL_DUMMYVIDEO "Use dummy video driver" ON)
dep_option(SDL_IBUS "Enable IBus support" ON ${UNIX_SYS} OFF)
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_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_ESD "Support the Enlightened Sound Daemon" ${UNIX_SYS})
dep_option(SDL_ESD_SHARED "Dynamically load ESD audio support" ON "SDL_ESD" 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_ARTS "Support the Analog Real Time Synthesizer" ${UNIX_SYS})
dep_option(SDL_ARTS_SHARED "Dynamically load aRts audio support" ON "SDL_ARTS" OFF)
set_option(SDL_NAS "Support the NAS audio API" ${UNIX_SYS})
dep_option(SDL_NAS_SHARED "Dynamically load NAS audio support" ON "SDL_NAS" 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_FUSIONSOUND "Use FusionSound audio driver" OFF)
dep_option(SDL_FUSIONSOUND_SHARED "Dynamically load fusionsound audio support" ON "SDL_FUSIONSOUND" 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_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)
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 SDL2_test library" ${SDL_TEST_ENABLED_BY_DEFAULT})
dep_option(SDL_STATIC_PIC "Static version of the library should be built with Position Independent Code" "${CMAKE_POSITION_INDEPENDENT_CODE}" "SDL_STATIC" OFF)
dep_option(SDL_TESTS "Build the test directory" OFF SDL_TEST OFF)
set_option(SDL_INSTALL_TESTS "Install test-cases" 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
${SDL2_SOURCE_DIR}/src/*.c
${SDL2_SOURCE_DIR}/src/atomic/*.c
${SDL2_SOURCE_DIR}/src/audio/*.c
${SDL2_SOURCE_DIR}/src/cpuinfo/*.c
${SDL2_SOURCE_DIR}/src/dynapi/*.c
${SDL2_SOURCE_DIR}/src/events/*.c
${SDL2_SOURCE_DIR}/src/file/*.c
${SDL2_SOURCE_DIR}/src/joystick/*.c
${SDL2_SOURCE_DIR}/src/haptic/*.c
${SDL2_SOURCE_DIR}/src/hidapi/*.c
${SDL2_SOURCE_DIR}/src/libm/*.c
${SDL2_SOURCE_DIR}/src/locale/*.c
${SDL2_SOURCE_DIR}/src/misc/*.c
${SDL2_SOURCE_DIR}/src/power/*.c
${SDL2_SOURCE_DIR}/src/render/*.c
${SDL2_SOURCE_DIR}/src/render/*/*.c
${SDL2_SOURCE_DIR}/src/sensor/*.c
${SDL2_SOURCE_DIR}/src/stdlib/*.c
${SDL2_SOURCE_DIR}/src/thread/*.c
${SDL2_SOURCE_DIR}/src/timer/*.c
${SDL2_SOURCE_DIR}/src/video/*.c
${SDL2_SOURCE_DIR}/src/video/yuv2rgb/*.c)
if(USE_INTELCC)
# warning #39: division by zero
# warning #239: floating point underflow
# warning #264: floating-point value does not fit in required floating-point type
set_property(SOURCE "${SDL2_SOURCE_DIR}/src/libm/e_exp.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd239 -wd264")
set_property(SOURCE "${SDL2_SOURCE_DIR}/src/libm/e_log.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd39")
set_property(SOURCE "${SDL2_SOURCE_DIR}/src/libm/e_log10.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd39")
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 ${SDL_ASSERTIONS})
if(NOT SDL_BACKGROUNDING_SIGNAL STREQUAL "OFF")
target_compile_definitions(sdl-build-options INTERFACE "-DSDL_BACKGROUNDING_SIGNAL=${SDL_BACKGROUNDING_SIGNAL}")
endif()
if(NOT SDL_FOREGROUNDING_SIGNAL STREQUAL "OFF")
target_compile_definitions(sdl-build-options INTERFACE "-DSDL_FOREGROUNDING_SIGNAL=${SDL_FOREGROUNDING_SIGNAL}")
endif()
# Compiler option evaluation
if(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QCC)
# Check for -Wall first, so later things can override pieces of it.
# Note: clang-cl treats -Wall as -Weverything (which is very loud),
# /W3 as -Wall, and /W4 as -Wall -Wextra. So: /W3 is enough.
check_c_compiler_flag(-Wall HAVE_GCC_WALL)
if(MSVC_CLANG)
list(APPEND EXTRA_CFLAGS "/W3")
elseif(HAVE_GCC_WALL)
list(APPEND EXTRA_CFLAGS "-Wall")
if(HAIKU)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-multichar")
endif()
endif()
check_c_compiler_flag(-Wundef HAVE_GCC_WUNDEF)
if(HAVE_GCC_WUNDEF)
list(APPEND EXTRA_CFLAGS "-Wundef")
endif()
check_c_compiler_flag(-fno-strict-aliasing HAVE_GCC_NO_STRICT_ALIASING)
if(HAVE_GCC_NO_STRICT_ALIASING)
list(APPEND EXTRA_CFLAGS "-fno-strict-aliasing")
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)
list(APPEND EXTRA_CFLAGS "-Werror=documentation")
endif()
endif()
list(APPEND EXTRA_CFLAGS "-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)
list(APPEND EXTRA_CFLAGS "-Werror=documentation-unknown-command")
endif()
endif()
list(APPEND EXTRA_CFLAGS "-Wdocumentation-unknown-command")
endif()
check_c_compiler_flag(-fcomment-block-commands=threadsafety HAVE_GCC_COMMENT_BLOCK_COMMANDS)
if(HAVE_GCC_COMMENT_BLOCK_COMMANDS)
list(APPEND EXTRA_CFLAGS "-fcomment-block-commands=threadsafety")
list(APPEND EXTRA_CFLAGS "-fcomment-block-commands=deprecated")
else()
check_c_compiler_flag(/clang:-fcomment-block-commands=threadsafety HAVE_CLANG_COMMENT_BLOCK_COMMANDS)
if(HAVE_CLANG_COMMENT_BLOCK_COMMANDS)
list(APPEND EXTRA_CFLAGS "/clang:-fcomment-block-commands=threadsafety")
list(APPEND EXTRA_CFLAGS "/clang:-fcomment-block-commands=deprecated")
endif()
endif()
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)
list(APPEND EXTRA_CFLAGS "-Werror=declaration-after-statement")
endif()
endif()
list(APPEND EXTRA_CFLAGS "-Wdeclaration-after-statement")
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()
set(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
int main(int argc, char **argv) { return 0; }" HAVE_GCC_FVISIBILITY)
if(HAVE_GCC_FVISIBILITY)
list(APPEND EXTRA_CFLAGS "-fvisibility=hidden")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
check_c_compiler_flag(-Wshadow HAVE_GCC_WSHADOW)
if(HAVE_GCC_WSHADOW)
list(APPEND EXTRA_CFLAGS "-Wshadow")
endif()
check_c_compiler_flag(-Wunused-local-typedefs HAVE_GCC_WUNUSED_LOCAL_TYPEDEFS)
if(HAVE_GCC_WUNUSED_LOCAL_TYPEDEFS)
list(APPEND EXTRA_CFLAGS "-Wno-unused-local-typedefs")
endif()
if(APPLE)
cmake_push_check_state(RESET)
# FIXME: don't use deprecated declarations
check_c_compiler_flag(-Wno-error=deprecated-declarations HAVE_WNO_ERROR_DEPRECATED_DECLARATIONS)
if(HAVE_WNO_ERROR_DEPRECATED_DECLARATIONS)
target_compile_options(sdl-build-options INTERFACE "-Wno-error=deprecated-declarations")
endif()
cmake_pop_check_state()
# FIXME: use generator expression instead of appending to EXTRA_LDFLAGS_BUILD
list(APPEND EXTRA_LDFLAGS_BUILD "-Wl,-compatibility_version,${DYLIB_COMPATIBILITY_VERSION}")
list(APPEND EXTRA_LDFLAGS_BUILD "-Wl,-current_version,${DYLIB_CURRENT_VERSION}")
elseif(NOT OPENBSD)
set(CMAKE_REQUIRED_FLAGS "-Wl,--no-undefined")
check_c_compiler_flag("" HAVE_NO_UNDEFINED)
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
if(HAVE_NO_UNDEFINED AND NOT (USE_CLANG AND WINDOWS))
list(APPEND EXTRA_LDFLAGS_BUILD "-Wl,--no-undefined")
endif()
endif()
if(MINGW)
# See if GCC's -gdwarf-4 is supported
# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101377 for why this is needed on Windows
cmake_push_check_state(RESET)
check_c_compiler_flag("-gdwarf-4" HAVE_GDWARF_4)
if(HAVE_GDWARF_4)
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -gdwarf-4")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -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))
list(APPEND EXTRA_CFLAGS -fdiagnostics-color=always)
elseif(USE_CLANG AND NOT CMAKE_C_COMPILER_ID MATCHES AppleClang)
list(APPEND EXTRA_CFLAGS -fcolor-diagnostics)
endif()
endif()
endif()
if(MSVC)
target_compile_definitions(sdl-build-options INTERFACE "-D_CRT_SECURE_NO_DEPRECATE")
target_compile_definitions(sdl-build-options INTERFACE "-D_CRT_NONSTDC_NO_DEPRECATE")
target_compile_definitions(sdl-build-options INTERFACE "-D_CRT_SECURE_NO_WARNINGS")
# CET support was added in VS 16.7
if(MSVC_VERSION GREATER 1926 AND CMAKE_GENERATOR_PLATFORM MATCHES "Win32|x64")
list(APPEND EXTRA_LDFLAGS_BUILD "-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 OR USE_INTELCC)
# TODO: Those all seem to be quite GCC specific - needs to be
# reworked for better compiler support
set(HAVE_ASSEMBLY TRUE)
if(SDL_MMX)
set(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)
if(HAVE_MMX)
list(APPEND EXTRA_CFLAGS "-mmmx")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
endif()
if(SDL_3DNOW)
set(CMAKE_REQUIRED_FLAGS "-m3dnow")
check_c_source_compiles("
#include <mm3dnow.h>
#ifndef __3dNOW__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) {
void *p = 0;
_m_prefetch(p);
return 0;
}" HAVE_3DNOW)
if(HAVE_3DNOW)
list(APPEND EXTRA_CFLAGS "-m3dnow")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
endif()
if(SDL_SSE)
set(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; }" HAVE_SSE)
if(HAVE_SSE)
list(APPEND EXTRA_CFLAGS "-msse")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
endif()
if(SDL_SSE2)
set(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)
if(CPU_SUPPORTS_SSE2)
set(HAVE_SSE2 TRUE)
list(APPEND EXTRA_CFLAGS "-msse2")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
endif()
if(SDL_SSE3)
set(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)
if(CPU_SUPPORTS_SSE3)
set(HAVE_SSE3 TRUE)
list(APPEND EXTRA_CFLAGS "-msse3")
endif()
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
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)
list(APPEND EXTRA_CFLAGS "-mfpmath=387")
endif()
endif()
endif()
else()
set(HAVE_SSEMATH TRUE)
endif()
check_include_file("immintrin.h" HAVE_IMMINTRIN_H)
if(SDL_ALTIVEC)
set(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)
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
if(CPU_SUPPORTS_ALTIVEC OR HAVE_ALTIVEC_H_HDR)
set(HAVE_ALTIVEC TRUE) # if only HAVE_ALTIVEC_H_HDR is set
list(APPEND EXTRA_CFLAGS "-maltivec")
set(SDL_ALTIVEC_BLITTERS 1)
if(HAVE_ALTIVEC_H_HDR)
set(HAVE_ALTIVEC_H 1)
endif()
endif()
endif()
if(SDL_LSX)
cmake_push_check_state()
list(APPEND CMAKE_REQUIRED_FLAGS "-mlsx")
check_c_source_compiles("
#ifndef __loongarch_sx
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" CPU_SUPPORTS_LSX)
check_include_file("lsxintrin.h" HAVE_LSXINTRIN_H)
cmake_pop_check_state()
if(CPU_SUPPORTS_LSX AND HAVE_LSXINTRIN_H)
list(APPEND EXTRA_CFLAGS "-mlsx")
set(HAVE_LSX TRUE)
endif()
endif()
if(SDL_LASX)
cmake_push_check_state()
list(APPEND CMAKE_REQUIRED_FLAGS "-mlasx")
check_c_source_compiles("
#ifndef __loongarch_asx
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" CPU_SUPPORTS_LASX)
check_include_file("lasxintrin.h" HAVE_LASXINTRIN_H)
cmake_pop_check_state()
if(CPU_SUPPORTS_LASX AND HAVE_LASXINTRIN_H)
list(APPEND EXTRA_CFLAGS "-mlasx")
set(HAVE_LASX TRUE)
endif()
endif()
if(SDL_ARMSIMD)
set(ORIG_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -x assembler-with-cpp")
check_c_source_compiles("
.text
.arch armv6
.object_arch armv4
.arm
.altmacro
#ifndef __ARM_EABI__
#error EABI is required (to be sure that calling conventions are compatible)
#endif
pld [r0]
uqadd8 r0, r0, r0
" ARMSIMD_FOUND)
set(CMAKE_REQUIRED_FLAGS "${ORIG_CMAKE_REQUIRED_FLAGS}")
if(ARMSIMD_FOUND)
set(HAVE_ARMSIMD TRUE)
set(SDL_ARM_SIMD_BLITTERS 1)
file(GLOB ARMSIMD_SOURCES ${SDL2_SOURCE_DIR}/src/video/arm/pixman-arm-simd*.S)
list(APPEND SOURCE_FILES ${ARMSIMD_SOURCES})
set(WARN_ABOUT_ARM_SIMD_ASM_MIT TRUE)
endif()
endif()
if(SDL_ARMNEON)
set(ORIG_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -x assembler-with-cpp")
check_c_source_compiles("
.text
.fpu neon
.arch armv7a
.object_arch armv4
.eabi_attribute 10, 0
.arm
.altmacro
#ifndef __ARM_EABI__
#error EABI is required (to be sure that calling conventions are compatible)
#endif
pld [r0]
vmovn.u16 d0, q0
" ARMNEON_FOUND)
set(CMAKE_REQUIRED_FLAGS "${ORIG_CMAKE_REQUIRED_FLAGS}")
if(ARMNEON_FOUND)
set(HAVE_ARMNEON TRUE)
set(SDL_ARM_NEON_BLITTERS 1)
file(GLOB ARMNEON_SOURCES ${SDL2_SOURCE_DIR}/src/v
35CA
ideo/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