--- a/src/mtwist.h	2021-07-14 12:18:25.848290454 +0000
+++ b/src/mtwist.h	2021-07-14 12:37:35.581368981 +0000
@@ -285,6 +285,7 @@
   prototypes using the ifdef.
 */
 #ifndef __APPLE__
+#ifndef __ARM_LINUX_COMPILER__
 extern uint32_t		mts_lrand(mt_state* state);
 					/* Generate 32-bit value, any gen. */
 #ifdef UINT64_MAX
@@ -310,6 +311,7 @@
 					/* Generate floating value */
 					/* Slower, with 64-bit precision */
 #endif
+#endif
 
 /*
  * Tempering parameters.  These are perhaps the most magic of all the magic
@@ -381,10 +383,14 @@
 #ifdef __cplusplus
 #define MT_EXTERN			/* C++ doesn't need static */
 #else /* __cplusplus */
-#ifndef __APPLE__
-#define MT_EXTERN	extern		/* C (at least gcc) needs extern */
-#else
+#ifdef __APPLE__
 #define MT_EXTERN	static 		/* The apple compiler freaks out if the definitions are not static */
+#else /* __APPLE__ */
+#ifdef __ARM_LINUX_COMPILER__
+#define MT_EXTERN	static 		/* The Arm compiler complains if the definitions are not static */
+#else /* __ARM_LINUX_COMPILER__ */
+#define MT_EXTERN	extern		/* C (at least gcc) needs extern */
+#endif /* __ARM_LINUX_COMPILER__ */
 #endif /* __APPLE__ */
 #endif /* __cplusplus */
 #endif /* MT_EXTERN */