From 6dea64ba7416790771586536f5ac3c0517ae7a11 Mon Sep 17 00:00:00 2001
From: kib <kib@FreeBSD.org>
Date: Tue, 15 Nov 2016 09:40:03 +0000
Subject: [PATCH] Assert that there is no unresolved symbols during rtld
 linking.

Reviewed by:	emaste, jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
X-Differential revision:	https://reviews.freebsd.org/D8448
---
 libexec/rtld-elf/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libexec/rtld-elf/Makefile b/libexec/rtld-elf/Makefile
index b62bff056d57..7efe2f2cc929 100644
--- a/libexec/rtld-elf/Makefile
+++ b/libexec/rtld-elf/Makefile
@@ -47,7 +47,7 @@ CFLAGS+=	-DPIC $(DEBUG)
 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
 CFLAGS+=	-fvisibility=hidden
 .endif
-LDFLAGS+=	-shared -Wl,-Bsymbolic
+LDFLAGS+=	-shared -Wl,-Bsymbolic -Wl,-z,defs
 LIBADD=		c_pic
 .if ${MK_TOOLCHAIN} == "no"
 LDFLAGS+=	-L${LIBCDIR}