Make file-scope variable static.

src/env.c

@@ -91,7 +91,7 @@ extern char **environ;
 /* The name by which this program was run. */
 char *program_name;
 
-struct option longopts[] =
+static struct option longopts[] =
 {
   {"ignore-environment", 0, NULL, 'i'},
   {"unset", 1, NULL, 'u'},

src/expr.c

@@ -62,7 +62,7 @@ struct valinfo
 typedef struct valinfo VALUE;
 
 /* The arguments given to the program, minus the program name.  */
-char **args;
+static char **args;
 
 /* The name this program was run with. */
 char *program_name;

src/id.c

@@ -68,28 +68,28 @@ void usage ();
 char *program_name;
 
 /* If nonzero, output only the group ID(s). -g */
-int just_group = 0;
+static int just_group = 0;
 
 /* If nonzero, output user/group name instead of ID number. -n */
-int use_name = 0;
+static int use_name = 0;
 
 /* If nonzero, output real UID/GID instead of default effective UID/GID. -r */
-int use_real = 0;
+static int use_real = 0;
 
 /* If nonzero, output only the user ID(s). -u */
-int just_user = 0;
+static int just_user = 0;
 
 /* If nonzero, output only the supplementary groups. -G */
-int just_group_list = 0;
+static int just_group_list = 0;
 
 /* The real and effective IDs of the user to print. */
-uid_t ruid, euid;
-gid_t rgid, egid;
+static uid_t ruid, euid;
+static gid_t rgid, egid;
 
 /* The number of errors encountered so far. */
-int problems = 0;
+static int problems = 0;
 
-struct option longopts[] =
+static struct option longopts[] =
 {
   {"group", 0, NULL, 'g'},
   {"name", 0, NULL, 'n'},

src/nice.c

@@ -33,7 +33,7 @@ void usage ();
 /* The name this program was run with. */
 char *program_name;
 
-struct option longopts[] =
+static struct option longopts[] =
 {
   {"adjustment", 1, NULL, 'n'},
   {NULL, 0, NULL, 0}

src/pathchk.c

@@ -136,7 +136,7 @@ main (argc, argv)
 /* Each element is nonzero if the corresponding ASCII character is
    in the POSIX portable character set, and zero if it is not.
    In addition, the entry for `/' is nonzero to simplify checking. */
-char portable_chars[] =
+static char portable_chars[] =
 {
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0-15 */
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 16-31 */

src/printf.c

@@ -74,7 +74,7 @@ void verify ();
 char *program_name;
 
 /* The value to return to the calling program.  */
-int exit_status;
+static int exit_status;
 
 void
 main (argc, argv)

src/stty.c

@@ -160,7 +160,7 @@ struct mode_info
   unsigned long mask;		/* Other bits to turn off for this mode.  */
 };
 
-struct mode_info mode_info[] =
+static struct mode_info mode_info[] =
 {
   {"parenb", control, REV, PARENB, 0},
   {"parodd", control, REV, PARODD, 0},

src/who.c

@@ -76,21 +76,21 @@ char *program_name;
 /* If nonzero, display only a list of usernames and count of
    the users logged on.
    Ignored for `who am i'. */
-int short_list;
+static int short_list;
 
 /* If nonzero, display the hours:minutes since each user has touched
    the keyboard, or "." if within the last minute, or "old" if
    not within the last day. */
-int include_idle;
+static int include_idle;
 
 /* If nonzero, display a line at the top describing each field. */
-int include_heading;
+static int include_heading;
 
 /* If nonzero, display a `+' for each user if mesg y, a `-' if mesg n,
    or a `?' if their tty cannot be statted. */
-int include_mesg;
+static int include_mesg;
 
-struct option longopts[] =
+static struct option longopts[] =
 {
   {"count", 0, NULL, 'q'},
   {"idle", 0, NULL, 'u'},