diff --git a/src/system/libnetwork/netresolv/port_before.h b/src/system/libnetwork/netresolv/port_before.h
index 89b775ecfc..3b075f40a7 100644
--- a/src/system/libnetwork/netresolv/port_before.h
+++ b/src/system/libnetwork/netresolv/port_before.h
@@ -46,6 +46,8 @@
 #	define	inet_ntop		__inet_ntop
 #	define	inet_nsap_addr	__inet_nsap_addr
 #	define	inet_nsap_ntoa	__inet_nsap_ntoa
+
+#define	__weak_alias(alias, sym) __asm(".weak " #alias "\n" #alias " = " #sym);
 #endif
 
 struct group;           /* silence warning */