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Fix CMake DYNAMIC_ARCH compilation with old compilers on ARM64 #5668

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Merged
martin-frbg merged 1 commit into from
Mar 5, 2026
+9 −0
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Fix CMake DYNAMIC_ARCH compilation with old compilers on ARM64 #5668

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9 changes: 9 additions & 0 deletions cmake/system_check.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -145,6 +145,15 @@ endif()
endif()

if (ARM64)
if (NOT NO_SVE)
file(WRITE ${PROJECT_BINARY_DIR}/sve.c "#include <arm_sve.h>\n\n int main(void){}\n")
execute_process(COMMAND ${CMAKE_C_COMPILER} -march=armv8-a+sve -c -o ${PROJECT_BINARY_DIR}/sve.o ${PROJECT_BINARY_DIR}/sve.c OUTPUT_QUIET ERROR_QUIET RESULT_VARIABLE NO_SVE)
if (NO_SVE EQUAL 1)
set (CCOMMON_OPT "${CCOMMON_OPT} -DNO_SVE")
endif()
file(REMOVE "${PROJECT_BINARY_DIR}/sve.c" "${PROJECT_BINARY_DIR}/sve.o")
endif()

if (NOT NO_SME)
file(WRITE ${PROJECT_BINARY_DIR}/sme.c ".text \n.global sme_test\n\nsme_test:\nsmstart\nsmstop\nret\n")
execute_process(COMMAND ${CMAKE_C_COMPILER} -march=armv9-a+sve2+sme -c -v -o ${PROJECT_BINARY_DIR}/sme.o ${PROJECT_BINARY_DIR}/sme.c OUTPUT_QUIET ERROR_QUIET RESULT_VARIABLE NO_SME)
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