diff -Nru sbc-1.5.orig/sbc/sbc_primitives.c sbc-1.5/sbc/sbc_primitives.c
--- sbc-1.5.orig/sbc/sbc_primitives.c	2020-12-07 23:26:08.000000000 +0100
+++ sbc-1.5/sbc/sbc_primitives.c	2020-12-11 10:49:43.145713370 +0100
@@ -591,6 +591,7 @@
 	return joint;
 }
 
+#if defined(__GNUC__) && (defined(__i386__) || defined(__amd64__))
 static void sbc_init_primitives_x86(struct sbc_encoder_state *state)
 {
 	__builtin_cpu_init();
@@ -605,6 +606,7 @@
 		sbc_init_primitives_sse(state);
 #endif
 }
+#endif
 
 /*
  * Detect CPU features and setup function pointers
@@ -630,8 +632,9 @@
 	state->implementation_info = "Generic C";
 
 	/* X86/AMD64 optimizations */
+#if defined(__GNUC__) && (defined(__i386__) || defined(__amd64__))
 	sbc_init_primitives_x86(state);
-
+#endif
 	/* ARM optimizations */
 #ifdef SBC_BUILD_WITH_ARMV6_SUPPORT
 	sbc_init_primitives_armv6(state);