diff --git a/openmp/runtime/CMakeLists.txt b/openmp/runtime/CMakeLists.txt
--- a/openmp/runtime/CMakeLists.txt
+++ b/openmp/runtime/CMakeLists.txt
@@ -69,7 +69,7 @@
 
 # FUJITSU A64FX is a special processor because its cache line size is 256.
 # We need to pass this information into kmp_config.h.
-if(LIBOMP_ARCH STREQUAL "aarch64")
+if(LIBOMP_ARCH STREQUAL "aarch64" AND NOT APPLE)
   libomp_is_aarch64_a64fx(LIBOMP_DETECT_AARCH64_A64FX)
   if (LIBOMP_DETECT_AARCH64_A64FX)
     set(LIBOMP_ARCH "aarch64_a64fx")