diff --git lib/libmd/Makefile lib/libmd/Makefile
index f7de303333e3..9e80cb9a459c 100644
--- lib/libmd/Makefile
+++ lib/libmd/Makefile
@@ -72,6 +72,12 @@ CLEANFILES+=	md[245]hl.c md[245].ref md[245].3 mddriver \
 		skein256.ref skein512.ref skein1024.ref \
 		skeindriver
 
+SRCS+=		sys/md5.h
+CLEANDIRS=	sys
+CFLAGS+=	-I.
+sys/md5.h: ${SRCTOP}/sys/${.TARGET} .NOMETA
+	ln -sf ${.ALLSRC} ${.TARGET}
+
 # Define WEAK_REFS to provide weak aliases for libmd symbols
 #
 # Note that the same sources are also used internally by libcrypt,