From 44e293d65c78b8a97c22be4e94657bd5fb2b9bfd Mon Sep 17 00:00:00 2001
From: Karel Zak <kzak@redhat.com>
Date: Wed, 26 Nov 2008 12:42:35 +0100
Subject: [PATCH] tools: add checkincludes.pl (from linux kernel)

Signed-off-by: Karel Zak <kzak@redhat.com>
---
 Makefile.am            | 11 +++++++++++
 tools/checkincludes.pl | 24 ++++++++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100755 tools/checkincludes.pl

diff --git a/Makefile.am b/Makefile.am
index b78e8a77..fefff76f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -14,6 +14,10 @@ SUBDIRS = \
 	text-utils \
 	tests
 
+
+RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
+		-name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o
+
 if LINUX
 SUBDIRS += \
 	hwclock \
@@ -42,6 +46,13 @@ distclean-local:
 	-find . -name \*~ -o -name \*.orig -o -name \*.rej | xargs rm -f
 	rm -rf autom4te.cache
 
+
+checkincludes:
+	-find * $(RCS_FIND_IGNORE) \
+		-name '*.[hcS]' -type f -print | sort -u \
+		| xargs $(top_srcdir)/tools/checkincludes.pl
+
+
 ENABLE_ALL = --enable-static-programs \
  --enable-elvtune --enable-init --enable-kill --enable-last \
  --enable-mesg --enable-partx --enable-raw --enable-rdev --enable-reset \
diff --git a/tools/checkincludes.pl b/tools/checkincludes.pl
new file mode 100755
index 00000000..8e6b716c
--- /dev/null
+++ b/tools/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 <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);
+}
-- 
2.39.5