--- Libc/Libc-391.4.2/Makefile.fbsd_begin
+++ Libc/Libc-583/Makefile.fbsd_begin
@@ -21,4 +21,5 @@
 FBSDMDSRCS=
 FBSDMISRCS=
 FBSDHDRS=
+FBSDPATCHSRCS=
 FBSDSRCS=