Index: head/archivers/arc/files/patch-arclzw.c
===================================================================
--- head/archivers/arc/files/patch-arclzw.c	(revision 545495)
+++ head/archivers/arc/files/patch-arclzw.c	(revision 545496)
@@ -1,11 +1,26 @@
 --- arclzw.c.orig	2010-08-07 13:06:42 UTC
 +++ arclzw.c
-@@ -560,7 +560,7 @@ decomp(squash, f, t)		/* decompress a fi
+@@ -57,9 +57,11 @@ static VOID     putcode();
+ #define NOT_FND  0xFFFF
+ 
+ extern u_char	*pinbuf;
+-u_char		*inbeg, *inend;
+-u_char          *outbuf;
+-u_char          *outbeg, *outend; 
++u_char		*inbeg;
++u_char		*inend;
++extern u_char	*outbuf;
++u_char		*outbeg;
++extern u_char	*outend; 
+ 
+ static int      sp;		/* current stack pointer */
+ static int	inflag;
+@@ -560,7 +562,7 @@ decomp(squash, f, t)		/* decompress a file */
  		 */
  		if (code >= free_ent) {
  			if (code > free_ent) {
 -				if (warn) {
 +				if (arcwarn) {
  					printf("Corrupted compressed file.\n");
  					printf("Invalid code %d when max is %d.\n",
  					       code, free_ent);
Index: head/archivers/arc/files/patch-arcunp.c
===================================================================
--- head/archivers/arc/files/patch-arcunp.c	(revision 545495)
+++ head/archivers/arc/files/patch-arcunp.c	(revision 545496)
@@ -1,20 +1,31 @@
 --- arcunp.c.orig	2010-08-07 13:06:42 UTC
 +++ arcunp.c
-@@ -122,7 +122,7 @@ unpack(f, t, hdr)		/* unpack an archive 
+@@ -39,8 +39,8 @@ extern int	lastc;
+ #define NOHIST 0		/* no relevant history */
+ #define INREP 1			/* sending a repeated value */
+ 
+-short    crcval;		/* CRC check value */
+-long     stdlen;		/* bytes to read */
++extern short    crcval;		/* CRC check value */
++extern long     stdlen;		/* bytes to read */
+ #if	!DOS
+ static int	gotcr;		/* got a carriage return? */
+ #endif
+@@ -122,7 +122,7 @@ unpack(f, t, hdr)		/* unpack an archive entry */
  		break;
  
  	default:		/* unknown method */
 -		if (warn) {
 +		if (arcwarn) {
  			printf("I don't know how to unpack file %s\n", hdr->name);
  			printf("I think you need a newer version of ARC\n");
  			nerrs++;
-@@ -134,7 +134,7 @@ unpack(f, t, hdr)		/* unpack an archive 
+@@ -134,7 +134,7 @@ unpack(f, t, hdr)		/* unpack an archive entry */
  	/* cleanups common to all methods */
  
  	if (crcval != hdr->crc) {
 -		if (warn || kludge) {
 +		if (arcwarn || kludge) {
  			printf("WARNING: File %s fails CRC check\n", hdr->name);
  			nerrs++;
  		}