diff --git a/devel/lclint/Makefile b/devel/lclint/Makefile
index 60712ec5a12..9f1ab38ff54 100644
--- a/devel/lclint/Makefile
+++ b/devel/lclint/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.6 1999/09/22 10:34:03 espie Exp $
+# $OpenBSD: Makefile,v 1.7 1999/09/24 14:13:06 espie Exp $
 
 NEED_VERSION=	1.116
 DISTNAME=	lclint-2.4b
@@ -25,6 +25,15 @@ DOCDIR=	${PREFIX}/share/doc/${DISTNAME}
 post-patch:
 	@cd ${WRKSRC}/src && ${MAKE_PROGRAM} up
 
+LIBSRC=${WRKSRC}/lib
+LCLINT=${WRKSRC}/bin/lclint
+
+post-build:
+	-cd ${LIBSRC} && rm *.orig
+	cd ${LIBSRC} && $(LCLINT) -nolib ansi.h posix.h -dump posix
+	cd ${LIBSRC} && $(LCLINT) -DSTRICT -nolib ansi.h posix.h -dump posixstrict
+	cd ${LIBSRC} && $(LCLINT) -nolib ansi.h posix.h unix.h -dump unix
+	cd ${LIBSRC} && $(LCLINT) -DSTRICT -nolib ansi.h posix.h unix.h -dump unixstrict
 post-install:
 	@${MKDIR} ${DOCDIR}
 	@cd ${DOCDIR} && ${TAR} -zxf ${FULLDISTDIR}/${GUIDE}
diff --git a/devel/lclint/patches/patch-ac b/devel/lclint/patches/patch-ac
new file mode 100644
index 00000000000..2e4a42d9214
--- /dev/null
+++ b/devel/lclint/patches/patch-ac
@@ -0,0 +1,11 @@
+--- lib/posix.h.orig	Fri Sep 24 13:47:38 1999
++++ lib/posix.h	Fri Sep 24 13:48:04 1999
+@@ -819,7 +819,7 @@ pause (void)
+ 	/*@modifies errno@*/;
+ 
+ 	extern int
+-pipe (int fd[])
++pipe (/*@out@*/ int fd[])
+ 	/*@modifies errno@*/;
+ 
+ 	extern ssize_t