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-rw-r--r--Makefile.am8
-rwxr-xr-xtools/check-includes.pl23
2 files changed, 31 insertions, 0 deletions
diff --git a/Makefile.am b/Makefile.am
index 4f5e036990..3730e71dc2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4936,6 +4936,14 @@ CLEANFILES += \
check-api-unused: defined undefined exported
( cat exported undefined ) | sort -u | diff -u - defined | grep ^+ | grep -v ^+++ | cut -c2-
+.PHONY: check-includes
+check-includes: $(top_srcdir)/tools/check-includes.pl
+ $(AM_V_GEN) find * -name '*.[hcS]' -type f -print | sort -u \
+ | xargs $(top_srcdir)/tools/check-includes.pl
+
+EXTRA_DIST += \
+ $(top_srcdir)/tools/check-includes.pl
+
# Stupid test that everything purported to be exported really is
define generate-sym-test
diff --git a/tools/check-includes.pl b/tools/check-includes.pl
new file mode 100755
index 0000000000..bf23929d47
--- /dev/null
+++ b/tools/check-includes.pl
@@ -0,0 +1,23 @@
+#!/usr/bin/perl
+#
+# checkincludes: Find files included more than once in (other) files.
+# Copyright abandoned, 2000, Niels Kristian Bech Jensen <nkbj@image.dk>.
+
+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);
+}