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-rwxr-xr-xscripts/checkincludes.pl9
1 files changed, 9 insertions, 0 deletions
diff --git a/scripts/checkincludes.pl b/scripts/checkincludes.pl
index 32ebff659fc..4bff13985eb 100755
--- a/scripts/checkincludes.pl
+++ b/scripts/checkincludes.pl
@@ -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";