Fix errors and simple warnings when building on GCC 10.2.0.

Makefile

@@ -2,7 +2,7 @@ AR = ar
 CC = gcc
 RANLIB = ranlib
 
-CFLAGS = -O2 -g
+CFLAGS = -O2 -g -Wno-endif-labels
 LDFLAGS =
 LIBELF = -lelf
 

common/device.c

@@ -31,6 +31,7 @@
 static char rcsid[] = "$Id: device.c,v 1.21 1996/08/08 00:00:59 moj Exp $";
 #endif
 
+#include <string.h>
 #include "os.h"
 #include "common.h"
 #include "mopdef.h"
@@ -48,7 +49,6 @@ int  mopOpenDL(struct if_info *, int);
 int  mopOpenRC(struct if_info *, int);
 #endif
 int pfTrans();
-int pfInit();
 int pfWrite();
 
 #ifdef	DEV_NEW_CONF

common/file.c

@@ -73,7 +73,7 @@ static char rcsid[] = "$Id: file.c,v 1.4 1996/08/16 22:39:22 moj Exp $";
 #endif
 
 #ifndef NOELF
-#include <libelf/libelf.h>
+#include <libelf.h>
 #endif
 
 struct mopphdr {
@@ -582,6 +582,7 @@ GetAOutFileInfo(fd, load, xfr, ftype, seg)
 		ex.a_drsize= mopFileGetBX((u_char *)&ex_swap, 28, 4);
 		break;
 	default:
+		break;
 /*###525 [cc] syntax error before `}'%%%*/
 	}
 
@@ -635,6 +636,7 @@ GetAOutFileInfo(fd, load, xfr, ftype, seg)
 			break;
 #endif
 		default:
+			break;
 		}
 		printf(") Magic: ");
 		switch (N_GETMAGIC (ex)) {

common/get.c

@@ -31,6 +31,7 @@
 static char rcsid[] = "$Id: get.c,v 1.5 1996/03/31 18:50:14 moj Exp $";
 #endif
 
+#include <strings.h>
 #include <sys/types.h>
 #include <netinet/in.h>
 #include "mopdef.h"

common/loop-bsd.c

@@ -91,7 +91,7 @@ mopReadDL()
  * The list of all interfaces that are being listened to.  loop()
  * "selects" on the descriptors in this list.
  */
-struct if_info *iflist;
+extern struct if_info *iflist;
 
 void   mopProcess    __P((struct if_info *, u_char *));
 

mopchk/mopchk.c

@@ -37,6 +37,7 @@ static char rcsid[] = "$Id: mopchk.c,v 1.5 1996/08/16 22:46:55 moj Exp $";
  * Usage:	mopchk [-a] [-v] [filename...]
  */
 
+#include <string.h>
 #include <common/os.h>
 #include <common/common.h>
 #include <common/mopdef.h>
@@ -48,7 +49,7 @@ static char rcsid[] = "$Id: mopchk.c,v 1.5 1996/08/16 22:46:55 moj Exp $";
  * The list of all interfaces that are being listened to.  rarp_loop()
  * "selects" on the descriptors in this list.
  */
-struct if_info *iflist;
+extern struct if_info *iflist;
 
 #ifdef NO__P
 void   Usage         (/* void */);

mopd/mopd.c

@@ -38,6 +38,7 @@ static char rcsid[] = "$Id: mopd.c,v 1.14 1996/03/31 19:20:42 moj Exp $";
  *		mopd [ -d -f -v ] [ -3 | -4 ] interface
  */
 
+#include <string.h>
 #include <common/os.h>
 #include <common/common.h>
 #include <common/mopdef.h>
@@ -50,12 +51,6 @@ static char rcsid[] = "$Id: mopd.c,v 1.14 1996/03/31 19:20:42 moj Exp $";
 #include <common/rc.h>
 #include "process.h"
 
-/*
- * The list of all interfaces that are being listened to. 
- * "selects" on the descriptors in this list.
- */
-struct if_info *iflist;
-
 #ifdef NO__P
 void   Loop	     (/* void */);
 void   Usage         (/* void */);

mopd/process.c

@@ -31,6 +31,7 @@
 static char rcsid[] = "$Id: process.c,v 1.21 1996/08/22 17:04:07 moj Exp $";
 #endif
 
+#include <string.h>
 #include <common/os.h>
 #include <common/common.h>
 #include <common/mopdef.h>

mopprobe/mopprobe.c

@@ -38,6 +38,8 @@ static char rcsid[] = "$Id: mopprobe.c,v 1.11 1996/08/11 22:16:10 moj Exp $";
  *		mopprobe [ -3 | -4 ] interface
  */
 
+#include <string.h>
+#include <arpa/inet.h>
 #include <common/os.h>
 #include <common/common.h>
 #include <common/mopdef.h>
@@ -52,7 +54,7 @@ static char rcsid[] = "$Id: mopprobe.c,v 1.11 1996/08/11 22:16:10 moj Exp $";
  * The list of all interfaces that are being listened to.  rarp_loop()
  * "selects" on the descriptors in this list.
  */
-struct if_info *iflist;
+extern struct if_info *iflist;
 
 #ifdef NO__P
 void   Loop	     (/* void */);

moptrace/moptrace.c

@@ -38,6 +38,7 @@ static char rcsid[] = "$Id: moptrace.c,v 1.10 1996/08/05 07:49:14 moj Exp $";
  *		moptrace [ -d ] [ -3 | -4 ] interface
  */
 
+#include <string.h>
 #include <common/os.h>
 #include <common/common.h>
 #include <common/mopdef.h>
@@ -52,7 +53,7 @@ static char rcsid[] = "$Id: moptrace.c,v 1.10 1996/08/05 07:49:14 moj Exp $";
  * The list of all interfaces that are being listened to. 
  * "selects" on the descriptors in this list.
  */
-struct if_info *iflist;
+extern struct if_info *iflist;
 
 #ifdef NO__P
 void   Loop	     (/* void */);