--- cmake/system.cmake.orig	2024-04-04 20:26:04 UTC
+++ cmake/system.cmake
@@ -172,7 +172,7 @@ if (DEFINED TARGET)
         endif()
     elseif (${CMAKE_C_COMPILER_ID} STREQUAL "Clang" OR ${CMAKE_C_COMPILER_ID} STREQUAL "AppleClang")
          if (${CMAKE_C_COMPILER_VERSION} VERSION_GREATER 8.99)
-          set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -march=cooperlake -exhaustive-register-search")
+          set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -march=cooperlake -mllvm -exhaustive-register-search")
         else()
           set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -march=skylake-avx512 -exhaustive-register-search")
         endif()
@@ -188,7 +188,7 @@ if (DEFINED TARGET)
         endif()
     elseif (${CMAKE_C_COMPILER_ID} STREQUAL "Clang" OR ${CMAKE_C_COMPILER_ID} STREQUAL "AppleClang")
          if (${CMAKE_C_COMPILER_VERSION} VERSION_GREATER 12.0)
-          set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -march=sapphirerapids -exhaustive-register-search")
+          set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -march=sapphirerapids -mllvm -exhaustive-register-search")
         else()
           set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -march=skylake-avx512 -exhaustive-register-search")
         endif()
@@ -197,7 +197,7 @@ if (DEFINED TARGET)
   if (${TARGET} STREQUAL SKYLAKEX AND NOT NO_AVX512)
     	  set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -march=skylake-avx512")
   	  if (${CMAKE_C_COMPILER_ID} STREQUAL "Clang" OR ${CMAKE_C_COMPILER_ID} STREQUAL "AppleClang")
-	 	set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -exhaustive-register-search")
+	 	set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -mllvm -exhaustive-register-search")
   	  endif()
   endif()
   
@@ -215,7 +215,7 @@ if (DEFINED TARGET)
 	else()
     	  set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -march=skylake-avx512")
         endif()
-	set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -exhaustive-register-search")
+	set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -mllvm -exhaustive-register-search")
     endif()
   endif()