diff --git a/src/cdefs-compat.h b/src/cdefs-compat.h
index c7deeb1..ead7589 100644
--- a/src/cdefs-compat.h
+++ b/src/cdefs-compat.h
@@ -34,9 +34,15 @@
 #else
 #ifdef __ELF__
 #ifdef __STDC__
+#if defined(__sh3__)
+#define openlibm_weak_reference(sym,alias)	\
+	__asm__(".weak _" #alias);	\
+	__asm__(".equ _" #alias ", _" #sym)
+#else
 #define openlibm_weak_reference(sym,alias)	\
 	__asm__(".weak " #alias);	\
 	__asm__(".equ "  #alias ", " #sym)
+#endif /* __sh3__ */
 #ifdef __warn_references
 #define openlibm_warn_references(sym,msg) __warn_references(sym,msg)
 #else