From 458f4722bf974c7fa7961952fcaee146f5a97708 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Mon, 17 Apr 2023 18:25:30 +0200
Subject: [PATCH] Suppress lld 16 errors about multiply defined symbols in
 rescue

lld >= 16 became more strict about multiply defined symbols. Since there
are many of those in crunchgen'd programs, turn off the check when
linking the rescue binary.

MFC after:	1 week
---
 rescue/rescue/Makefile | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/rescue/rescue/Makefile b/rescue/rescue/Makefile
index 2360bf83b781..1f4db1d06b15 100644
--- a/rescue/rescue/Makefile
+++ b/rescue/rescue/Makefile
@@ -13,6 +13,12 @@ MK_PIE=	no
 NO_SHARED=	yes
 CRUNCH_BUILDOPTS+=	MK_PIE=no NO_SHARED=yes
 
+# lld >= 16 became more strict about multiply defined symbols. Since there are
+# many of those in crunchgen'd programs, turn off the check.
+.if ${LINKER_TYPE} == "lld" && ${LINKER_VERSION} >= 160000
+LDFLAGS+=	-Wl,--allow-multiple-definition
+.endif
+
 PROG=	rescue
 BINDIR?=/rescue