Don't explicitly declare optarg and optind. These are declared in

unistd.h, which is already included.

bin/chio/chio.c

@@ -54,7 +54,6 @@ static const char rcsid[] =
 #include "pathnames.h"
 
 extern	char *__progname;	/* from crt0.o */
-extern int optreset;		/* from getopt.o */
 
 static	void usage __P((void));
 static	void cleanup __P((void));

bin/date/date.c

@@ -78,8 +78,6 @@ main(argc, argv)
 	int argc;
 	char **argv;
 {
-	extern int optind;
-	extern char *optarg;
 	struct timezone tz;
 	int ch, rflag;
 	int jflag, nflag;

bin/ln/ln.c

@@ -71,7 +71,6 @@ main(argc, argv)
 	int argc;
 	char *argv[];
 {
-	extern int optind;
 	struct stat sb;
 	int ch, exitval;
 	char *p, *sourcedir;

bin/pax/options.c

@@ -188,8 +188,6 @@ pax_options(argc, argv)
 	unsigned int bflg = 0;
 	register char *pt;
         FSUB tmp;
-	extern char *optarg;
-	extern int optind;
 
 	/*
 	 * process option flags