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Improved Target Architecture Detection #26

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Improved Target Architecture Detection #26

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5bd41ea
FIX: detect arch without try_run so that it works from cross compilin…
hacksysteam Jun 6, 2024
ac10e47
FIX: detect arch without try_run so that it works from cross compilin…
hacksysteam Jun 6, 2024
a62959f
FIX: detect arch without try_run so that it works from cross compilin…
hacksysteam Jun 6, 2024
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64 changes: 24 additions & 40 deletions cmake/target_arch.cmake
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Original file line number Diff line number Diff line change
@@ -1,43 +1,27 @@

set(TARGET_ARCH_DETECT_CODE "
int main() {
#if defined(_M_ARM)
return 2;
#elif defined(_M_ARM64)
return 3;
#elif defined(_M_AMD64)
return 4;
#elif defined(_M_X64)
return 5;
#elif defined(_M_IX86)
return 6;
#else
return 0;
#endif
}
")

function(get_target_arch out)
if(CMAKE_SYSTEM_PROCESSOR)
set(_processor "${CMAKE_SYSTEM_PROCESSOR}")
elseif(CMAKE_HOST_SYSTEM_PROCESSOR)
set(_processor "${CMAKE_HOST_SYSTEM_PROCESSOR}")
elseif(UNIX AND NOT APPLE)
# Fallback to uname for Unix-like systems
execute_process(
COMMAND uname -m OUTPUT_VARIABLE _uname_processor OUTPUT_STRIP_TRAILING_WHITESPACE
)
set(_processor "${_uname_processor}")
else()
set(_processor "unknown")
endif()

file(WRITE
"${CMAKE_BINARY_DIR}/target_arch_detect.c"
"${TARGET_ARCH_DETECT_CODE}")

try_run(
run_result compile_result_unused
"${CMAKE_BINARY_DIR}" "${CMAKE_BINARY_DIR}/target_arch_detect.c")

if (run_result STREQUAL 2)
set(${out} "ARM" PARENT_SCOPE)
elseif (run_result STREQUAL 3)
set(${out} "ARM64" PARENT_SCOPE)
elseif (run_result STREQUAL 4)
set(${out} "x86_64" PARENT_SCOPE)
elseif (run_result STREQUAL 5)
set(${out} "x64" PARENT_SCOPE)
elseif (run_result STREQUAL 6)
set(${out} "x86" PARENT_SCOPE)
else()
set(${out} "unknown" PARENT_SCOPE)
endif()
if(_processor MATCHES "^(arm|ARM)")
set(${out} "ARM" PARENT_SCOPE)
elseif(_processor MATCHES "^(aarch64|AARCH64|arm64|ARM64)")
set(${out} "ARM64" PARENT_SCOPE)
elseif(_processor MATCHES "^(x86_64|X86_64|amd64|AMD64)")
set(${out} "x86_64" PARENT_SCOPE)
elseif(_processor MATCHES "^(x86|X86|i386|I386|i686|I686)")
set(${out} "x86" PARENT_SCOPE)
else()
set(${out} "unknown" PARENT_SCOPE)
endif()
endfunction()