function(SDL_DetectTargetCPUArchitectures DETECTED_ARCHS) set(known_archs EMSCRIPTEN ARM32 ARM64 ARM64EC LOONGARCH64 POWERPC32 POWERPC64 X86 X64) if(APPLE AND CMAKE_OSX_ARCHITECTURES) foreach(known_arch IN LISTS known_archs) set(SDL_CPU_${known_arch} "0") endforeach() set(detected_archs) foreach(osx_arch IN LISTS CMAKE_OSX_ARCHITECTURES) if(osx_arch STREQUAL "x86_64") set(SDL_CPU_X64 "1") list(APPEND detected_archs "X64") elseif(osx_arch STREQUAL "arm64") set(SDL_CPU_ARM64 "1") list(APPEND detected_archs "ARM64") endif() endforeach() set("${DETECTED_ARCHS}" "${detected_archs}" PARENT_SCOPE) return() endif() set(detected_archs) foreach(known_arch IN LISTS known_archs) if(SDL_CPU_${known_arch}) list(APPEND detected_archs "${known_arch}") endif() endforeach() if(detected_archs) set("${DETECTED_ARCHS}" "${detected_archs}" PARENT_SCOPE) return() endif() set(arch_check_ARM32 "defined(__arm__) || defined(_M_ARM)") set(arch_check_ARM64 "defined(__aarch64__) || defined(_M_ARM64)") set(arch_check_ARM64EC "defined(_M_ARM64EC)") set(arch_check_EMSCRIPTEN "defined(__EMSCRIPTEN__)") set(arch_check_LOONGARCH64 "defined(__loongarch64)") set(arch_check_POWERPC32 "(defined(__PPC__) || defined(__powerpc__)) && !defined(__powerpc64__)") set(arch_check_POWERPC64 "defined(__PPC64__) || defined(__powerpc64__)") set(arch_check_X86 "defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) ||defined( __i386) || defined(_M_IX86)") set(arch_check_X64 "(defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64) || defined(_M_X64) || defined(_M_AMD64)) && !defined(_M_ARM64EC)") set(src_vars "") set(src_main "") foreach(known_arch IN LISTS known_archs) set(detected_${known_arch} "0") string(APPEND src_vars " #if ${arch_check_${known_arch}} #define ARCH_${known_arch} \"1\" #else #define ARCH_${known_arch} \"0\" #endif const char *arch_${known_arch} = \"INFO<${known_arch}=\" ARCH_${known_arch} \">\"; ") string(APPEND src_main " result += arch_${known_arch}[argc];") endforeach() set(src_arch_detect "${src_vars} int main(int argc, char *argv[]) { int result = 0; (void)argv; ${src_main} return result; }") if(CMAKE_C_COMPILER) set(ext ".c") elseif(CMAKE_CXX_COMPILER) set(ext ".cpp") else() enable_language(C) set(ext ".c") endif() set(path_src_arch_detect "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/CMakeTmp/SDL_detect_arch${ext}") file(WRITE "${path_src_arch_detect}" "${src_arch_detect}") set(path_dir_arch_detect "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/CMakeTmp/SDL_detect_arch") set(path_bin_arch_detect "${path_dir_arch_detect}/bin") set(detected_archs) set(msg "Detecting Target CPU Architecture") message(STATUS "${msg}") include(CMakePushCheckState) set(CMAKE_TRY_COMPILE_TARGET_TYPE "STATIC_LIBRARY") cmake_push_check_state(RESET) try_compile(SDL_CPU_CHECK_ALL "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/CMakeTmp/SDL_detect_arch" SOURCES "${path_src_arch_detect}" COPY_FILE "${path_bin_arch_detect}" ) cmake_pop_check_state() if(NOT SDL_CPU_CHECK_ALL) message(STATUS "${msg} - ") message(WARNING "Failed to compile source detecting the target CPU architecture") else() set(re "INFO<([A-Z0-9]+)=([01])>") file(STRINGS "${path_bin_arch_detect}" infos REGEX "${re}") foreach(info_arch_01 IN LISTS infos) string(REGEX MATCH "${re}" A "${info_arch_01}") if(NOT "${CMAKE_MATCH_1}" IN_LIST known_archs) message(WARNING "Unknown architecture: \"${CMAKE_MATCH_1}\"") continue() endif() set(arch "${CMAKE_MATCH_1}") set(arch_01 "${CMAKE_MATCH_2}") set(detected_${arch} "${arch_01}") endforeach() foreach(known_arch IN LISTS known_archs) if(detected_${known_arch}) list(APPEND detected_archs ${known_arch}) endif() endforeach() endif() if(detected_archs) foreach(known_arch IN LISTS known_archs) set("SDL_CPU_${known_arch}" "${detected_${known_arch}}" CACHE BOOL "Detected architecture ${known_arch}") endforeach() message(STATUS "${msg} - ${detected_archs}") else() include(CheckCSourceCompiles) cmake_push_check_state(RESET) foreach(known_arch IN LISTS known_archs) if(NOT detected_archs) set(cache_variable "SDL_CPU_${known_arch}") set(test_src " int main(int argc, char *argv[]) { #if ${arch_check_${known_arch}} return 0; #else choke #endif } ") check_c_source_compiles("${test_src}" "${cache_variable}") if(${cache_variable}) set(SDL_CPU_${known_arch} "1" CACHE BOOL "Detected architecture ${known_arch}") set(detected_archs ${known_arch}) else() set(SDL_CPU_${known_arch} "0" CACHE BOOL "Detected architecture ${known_arch}") endif() endif() endforeach() cmake_pop_check_state() endif() set("${DETECTED_ARCHS}" "${detected_archs}" PARENT_SCOPE) endfunction()