From: Ondřej Surý <ondrej@isc.org>
Date: Wed, 12 Aug 2020 19:06:26 +0000 (+0200)
Subject: Add explicit support of OSS-Fuzz
X-Git-Tag: v9.17.5~53^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f9aba9034229c0a288f70f98a2a5850fd6218511;p=thirdparty%2Fbind9.git

Add explicit support of OSS-Fuzz

The --enable-fuzzing option now allows third choice "ossfuzz" that just
adds $LIB_FUZZING_ENGINE to FUZZ_LDFLAGS to make the fuzzer builds
compatible with OSS-Fuzz project that has some special quirks (the
main() routine is provided in the static library the project provides).
---

diff --git a/configure.ac b/configure.ac
index 5f8d2b42412..edc3eefbcf6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -200,7 +200,7 @@ AC_ARG_ENABLE(buffer_useinline,
 	      AC_DEFINE([ISC_BUFFER_USEINLINE], [1]))
 
 AC_ARG_ENABLE([fuzzing],
-	      [AS_HELP_STRING([--enable-fuzzing=<afl|libfuzzer>],
+	      [AS_HELP_STRING([--enable-fuzzing=<afl|libfuzzer|ossfuzz>],
 			      [Enable fuzzing using American Fuzzy Lop or libFuzzer (default=no)])],
 	      [],
 	      [enable_fuzzing=no])
@@ -220,6 +220,9 @@ AS_CASE([$enable_fuzzing],
 	  LDFLAGS="$LDFLAGS -fsanitize=address,undefined"
 	  FUZZ_LDFLAGS="-fsanitize=fuzzer,address,undefined"
 	  FUZZ_LOG_COMPILER="libfuzzer.sh"],
+	[ossfuzz],[
+	    AC_MSG_RESULT([using OSS-Fuzz])
+	    FUZZ_LDFLAGS="$LIB_FUZZING_ENGINE"],
 	[*],[AC_MSG_ERROR([You need to explicitly select the fuzzer])])
 AM_CONDITIONAL([HAVE_FUZZ_LOG_COMPILER], [test -n "$FUZZ_LOG_COMPILER"])
 AC_SUBST([FUZZ_LOG_COMPILER])