diff --git a/usr.bin/ar/Makefile b/usr.bin/ar/Makefile
index ec9b2629eaa6..7392d139db4d 100644
--- a/usr.bin/ar/Makefile
+++ b/usr.bin/ar/Makefile
@@ -1,8 +1,8 @@
 #	@(#)Makefile	8.1 (Berkeley) 6/6/93
-#	$Id$
+#	$Id: Makefile,v 1.7 1998/10/10 12:48:48 bde Exp $
 
 PROG=	ar
-CFLAGS+=-I${.CURDIR}
+CFLAGS+=-I${.CURDIR} -Wall
 SRCS=	append.c ar.c archive.c contents.c delete.c extract.c misc.c \
 	move.c print.c replace.c
 MAN1aout=ar.1aout
diff --git a/usr.bin/ar/append.c b/usr.bin/ar/append.c
index ea2e04c64b07..58c06b5e0a79 100644
--- a/usr.bin/ar/append.c
+++ b/usr.bin/ar/append.c
@@ -35,7 +35,7 @@
  */
 
 #ifndef lint
-static char sccsid[] = "@(#)append.c	8.3 (Berkeley) 4/2/94";
+static const char sccsid[] = "@(#)append.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */
 
 #include <sys/param.h>
diff --git a/usr.bin/ar/ar.c b/usr.bin/ar/ar.c
index f27ff84c43bb..b2c85fc79537 100644
--- a/usr.bin/ar/ar.c
+++ b/usr.bin/ar/ar.c
@@ -33,17 +33,17 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id$
+ *	$Id: ar.c,v 1.6 1997/06/23 06:41:30 charnier Exp $
  */
 
 #ifndef lint
-static char copyright[] =
+static const char copyright[] =
 "@(#) Copyright (c) 1990, 1993, 1994\n\
 	The Regents of the University of California.  All rights reserved.\n";
 #endif /* not lint */
 
 #ifndef lint
-static char sccsid[] = "@(#)ar.c	8.3 (Berkeley) 4/2/94";
+static const char sccsid[] = "@(#)ar.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -80,7 +80,7 @@ main(argc, argv)
 {
 	int c;
 	char *p;
-	int (*fcall) __P((char **));
+	int (*fcall) __P((char **)) = NULL;
 
 	(void) setlocale(LC_TIME, "");;
 
diff --git a/usr.bin/ar/archive.c b/usr.bin/ar/archive.c
index c8803cc0bc1c..71606bd3efb6 100644
--- a/usr.bin/ar/archive.c
+++ b/usr.bin/ar/archive.c
@@ -35,7 +35,7 @@
  */
 
 #ifndef lint
-static char sccsid[] = "@(#)archive.c	8.3 (Berkeley) 4/2/94";
+static const char sccsid[] = "@(#)archive.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -279,7 +279,7 @@ copy_ar(cfp, size)
 {
 	static char pad = '\n';
 	off_t sz;
-	int from, nr, nw, off, to;
+	int from, nr = 0, nw, off, to;
 	char buf[8*1024];
 
 	if (!(sz = size))
diff --git a/usr.bin/ar/contents.c b/usr.bin/ar/contents.c
index e000d535dc59..e31cd639acfa 100644
--- a/usr.bin/ar/contents.c
+++ b/usr.bin/ar/contents.c
@@ -35,7 +35,7 @@
  */
 
 #ifndef lint
-static char sccsid[] = "@(#)contents.c	8.3 (Berkeley) 4/2/94";
+static const char sccsid[] = "@(#)contents.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */
 
 #include <sys/param.h>
diff --git a/usr.bin/ar/delete.c b/usr.bin/ar/delete.c
index 5824b6122484..152395bef3a7 100644
--- a/usr.bin/ar/delete.c
+++ b/usr.bin/ar/delete.c
@@ -35,7 +35,7 @@
  */
 
 #ifndef lint
-static char sccsid[] = "@(#)delete.c	8.3 (Berkeley) 4/2/94";
+static const char sccsid[] = "@(#)delete.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */
 
 #include <sys/param.h>
diff --git a/usr.bin/ar/extract.c b/usr.bin/ar/extract.c
index c80e37ce50c8..89503f391c12 100644
--- a/usr.bin/ar/extract.c
+++ b/usr.bin/ar/extract.c
@@ -35,7 +35,7 @@
  */
 
 #ifndef lint
-static char sccsid[] = "@(#)extract.c	8.3 (Berkeley) 4/2/94";
+static const char sccsid[] = "@(#)extract.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */
 
 #include <sys/param.h>
diff --git a/usr.bin/ar/misc.c b/usr.bin/ar/misc.c
index bcd97118be22..026c45dcf598 100644
--- a/usr.bin/ar/misc.c
+++ b/usr.bin/ar/misc.c
@@ -35,7 +35,7 @@
  */
 
 #ifndef lint
-static char sccsid[] = "@(#)misc.c	8.3 (Berkeley) 4/2/94";
+static const char sccsid[] = "@(#)misc.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */
 
 #include <sys/param.h>
diff --git a/usr.bin/ar/move.c b/usr.bin/ar/move.c
index c2dba365dce5..3450ab44bf61 100644
--- a/usr.bin/ar/move.c
+++ b/usr.bin/ar/move.c
@@ -35,7 +35,7 @@
  */
 
 #ifndef lint
-static char sccsid[] = "@(#)move.c	8.3 (Berkeley) 4/2/94";
+static const char sccsid[] = "@(#)move.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */
 
 #include <sys/param.h>
diff --git a/usr.bin/ar/print.c b/usr.bin/ar/print.c
index 436762859eb6..accc2e4e60e6 100644
--- a/usr.bin/ar/print.c
+++ b/usr.bin/ar/print.c
@@ -35,7 +35,7 @@
  */
 
 #ifndef lint
-static char sccsid[] = "@(#)print.c	8.3 (Berkeley) 4/2/94";
+static const char sccsid[] = "@(#)print.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */
 
 #include <sys/param.h>
diff --git a/usr.bin/ar/replace.c b/usr.bin/ar/replace.c
index b9a6cc6dc7c5..0cbffd7c23f9 100644
--- a/usr.bin/ar/replace.c
+++ b/usr.bin/ar/replace.c
@@ -35,7 +35,7 @@
  */
 
 #ifndef lint
-static char sccsid[] = "@(#)replace.c	8.3 (Berkeley) 4/2/94";
+static const char sccsid[] = "@(#)replace.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */
 
 #include <sys/param.h>