From 6e55856830477bbd8283981d5d7f16bfd3a9222f Mon Sep 17 00:00:00 2001
From: Tobias Brunner <tobias@strongswan.org>
Date: Tue, 2 Oct 2018 10:58:40 +0200
Subject: [PATCH] fuzzing: Add -lm to LDFLAGS if the coverage sanitizer is used

libFuzzer apparently uses math functions (e.g. ceilf) for that sanitizer.
---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index 673393f8d..1ef437389 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1292,6 +1292,9 @@ if test x$fuzzing = xtrue; then
 	else
 		# required for libFuzzer
 		FUZZING_LDFLAGS="-stdlib=libc++ -lstdc++"
+		if test "$SANITIZER" = "coverage"; then
+			FUZZING_LDFLAGS="$FUZZING_LDFLAGS -lm"
+		fi
 		AC_SUBST(FUZZING_LDFLAGS)
 	fi
 fi