diff --git a/scripts/checkincludes.pl b/scripts/checkincludes.pl
new file mode 100755
index 0000000..8e6b716
--- /dev/null
+++ b/scripts/checkincludes.pl
@@ -0,0 +1,24 @@
+#!/usr/bin/perl
+#
+# checkincludes: Find files included more than once in (other) files.
+# Copyright abandoned, 2000, Niels Kristian Bech Jensen <[email protected]>.
+
+foreach $file (@ARGV) {
+ open(FILE, $file) or die "Cannot open $file: $!.\n";
+
+ my %includedfiles = ();
+
+ while (<FILE>) {
+ if (m/^\s*#\s*include\s*[<"](\S*)[>"]/o) {
+ ++$includedfiles{$1};
+ }
+ }
+
+ foreach $filename (keys %includedfiles) {
+ if ($includedfiles{$filename} > 1) {
+ print "$file: $filename is included more than once.\n";
+ }
+ }
+
+ close(FILE);
+}