--- include/my_rdtsc.h	2020-06-23 15:10:16 UTC
+++ include/my_rdtsc.h	
@@ -26,7 +26,7 @@ 
 # ifndef __has_builtin
 #  define __has_builtin(x) 0 /* Compatibility with non-clang compilers */
 # endif
-# if __has_builtin(__builtin_readcyclecounter)
+# if __has_builtin(__builtin_readcyclecounter) && !defined(__arm__)
 # elif defined _WIN32
 #  include <intrin.h>
 # elif defined __i386__ || defined __x86_64__
@@ -125,7 +125,7 @@ C_MODE_START
 */
 static inline ulonglong my_timer_cycles(void)
 {
-# if __has_builtin(__builtin_readcyclecounter)
+# if __has_builtin(__builtin_readcyclecounter) && !defined(__arm__)
   return __builtin_readcyclecounter();
 # elif defined _WIN32 || defined __i386__ || defined __x86_64__
   return __rdtsc();