From 299a383d98f67fdd8ec5ce91f72b5d560ef4441e Mon Sep 17 00:00:00 2001
From: David Adam <zanchey@ucc.gu.uwa.edu.au>
Date: Wed, 29 Jul 2015 21:41:57 +0800
Subject: Makefile: add target for Include What You Use (iwyu)

Requires http://include-what-you-use.org/ and Clang to operate.
Doesn't quite work for the builtin_* collection; that has to be done by
hand.
---
 Makefile.in         | 7 +++++++
 build_tools/iwyu.sh | 4 ++++
 2 files changed, 11 insertions(+)
 create mode 100755 build_tools/iwyu.sh

diff --git a/Makefile.in b/Makefile.in
index f6bc306d..45f922d6 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -828,6 +828,13 @@ depend:
 	./config.status
 .PHONY: depend
 
+# Include What You Use
+iwyu:
+	# Requires the --keep-going flag as it always returns 1
+	# Can't set MAKEFLAGS on a target-specific basic
+	$(MAKE) -k _iwyu CXX=include-what-you-use
+_iwyu: clean $(PROGRAMS)
+.PHONY: iwyu _iwyu
 
 #
 # Cleanup targets
diff --git a/build_tools/iwyu.sh b/build_tools/iwyu.sh
new file mode 100755
index 00000000..dc36796a
--- /dev/null
+++ b/build_tools/iwyu.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+# Reminder of how to run Include What You Use
+
+make iwyu
-- 
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