diff --git a/sys/sys/cdefs.h b/sys/sys/cdefs.h
--- a/sys/sys/cdefs.h
+++ b/sys/sys/cdefs.h
@@ -562,7 +562,11 @@
 #endif	/* __GNUC__ */
 
 #define	__GLOBL(sym)	__asm__(".globl " __XSTRING(sym))
+#ifdef __clang__
 #define	__WEAK(sym)	__asm__(".weak " __XSTRING(sym))
+#else
+#define	__WEAK(sym)	__GLOBL(sym)
+#endif
 
 #if defined(__GNUC__)
 #define	__IDSTRING(name,string)	__asm__(".ident\t\"" string "\"")