checkincludes.pl: provide usage helper
Luis R. Rodriguez [Fri, 18 Sep 2009 19:49:26 +0000 (12:49 -0700)]
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

scripts/checkincludes.pl

index 32ebff6..4bff139 100755 (executable)
@@ -3,6 +3,15 @@
 # checkincludes: Find files included more than once in (other) files.
 # Copyright abandoned, 2000, Niels Kristian Bech Jensen <nkbj@image.dk>.
 
+sub usage {
+       print "Usage: checkincludes.pl <file list>\n";
+       exit 1;
+}
+
+if ($#ARGV < 0) {
+        usage();
+}
+
 foreach $file (@ARGV) {
        open(FILE, $file) or die "Cannot open $file: $!.\n";