diff --git a/lib/liby/Makefile b/lib/liby/Makefile
index 545ff0430a62..ecf89d78faa4 100644
--- a/lib/liby/Makefile
+++ b/lib/liby/Makefile
@@ -1,6 +1,28 @@
-#	@(#)Makefile	8.1 (Berkeley) 6/4/93
+#	$Id: Makefile,v 1.10 1996/10/08 20:06:22 bde Exp $
+
+LIB=		y
+INTERNALLIB=	yes		# Do not build or install ${LIB}*.a
+SHLIB_MAJOR=	2
+SHLIB_MINOR=	0
 
-LIB=	y
 SRCS=	main.c yyerror.c
 
+#
+# Before complaining about this, please *double-check* that you have
+# updated the ldconfig path in /etc/rc to include /usr/lib/compat that
+# was added in src/etc/rc rev 1.98.
+# This is so that `ld' will not continue to generatebinaries linked
+# shared against liby, so that in a future release we can move this
+# off to a compat dist (like compat22).
+#
+beforeinstall:
+	rm -f ${DESTDIR}${ORIG_SHLIBDIR}/lib${LIB}.so.${SHLIB_MAJOR}.${SHLIB_MINOR}
+
 .include <bsd.lib.mk>
+
+# This must follow the .include in case SHLIBDIR is defined there.
+ORIG_SHLIBDIR:=	${SHLIBDIR}
+
+# The ldconfig line in/etc/rc doesn't depend on ${LIBDIR} or ${SHLIBDIR},
+# so neither does this.
+SHLIBDIR=	/usr/lib/compat