From 573a3dc076cfecb2337cca118bdbd7c4452b1ec6 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Sat, 21 Feb 2015 21:05:10 +0100
Subject: Add Makefile target to fuzz with AFL

Also add a compact test case. As far as I understand, a good test case
should exercise many code paths while being as small as possible.
There's probably still room for improvement.

The variable $AFL_PATH must point to the directory containing the AFL
binaries. It can be set as an environment variable or passed to make on
the command line.
---
 Makefile | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index e6a2314..7cf1cc8 100644
--- a/Makefile
+++ b/Makefile
@@ -59,6 +59,17 @@ prof:
 	cmake .. -DCMAKE_BUILD_TYPE=Profile; \
 	make
 
+afl:
+	@[ -n "$(AFL_PATH)" ] || { echo '$$AFL_PATH not set'; false; }
+	mkdir -p $(BUILDDIR)
+	cd $(BUILDDIR) && cmake .. -DCMAKE_C_COMPILER=$(AFL_PATH)/afl-gcc
+	make
+	$(AFL_PATH)/afl-fuzz \
+	    -i test/afl_test_cases \
+	    -o test/afl_results \
+	    -m none \
+	    $(CMARK)
+
 mingw:
 	mkdir -p $(MINGW_BUILDDIR); \
 	cd $(MINGW_BUILDDIR); \
-- 
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