fuzz/README: document how to build

Fixes #1476

diff --git a/tests/fuzz/README b/tests/fuzz/README
index 106d1098a89fd8ddec838a1f64c10cad5e5d04a6..459bda46b26c05ef1314251d291bdeee0cda4380 100644 (file)
--- a/tests/fuzz/README
+++ b/tests/fuzz/README
@@ -7,4 +7,8 @@ We will need some additional patches in the future, to increase coverage.
 Building the fuzz target
 ========================
 
-FIXME fill out once the makefiles are in order.
\ No newline at end of file
+CC=clang-5.0 CFLAGS="-fsanitize=address -fsanitize-address-use-after-scope -fsanitize-coverage=trace-pc-guard,trace-cmp" ./configure --disable-shared --enable-debug --enable-maintainer-mode
+make -sj
+
+cd tests/fuzz
+make