From 4d135bbd7fd2669f2238d0d0074ce9a17d720630 Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Wed, 2 Sep 2020 22:10:08 +0000
Subject: [PATCH] libifconfig now depends on libm due to usage of log10().

ld.bfd in particular requires -lm to come after libifconfig on the
command line when linking rescue.

Reviewed by:	freqlabs, adrian
Differential Revision:	https://reviews.freebsd.org/D26258
---
 lib/libifconfig/Makefile | 2 ++
 rescue/rescue/Makefile   | 3 ++-
 share/mk/src.libnames.mk | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/libifconfig/Makefile b/lib/libifconfig/Makefile
index f7d2dbf1c71d..73c5166ffb2c 100644
--- a/lib/libifconfig/Makefile
+++ b/lib/libifconfig/Makefile
@@ -4,6 +4,8 @@ PACKAGE=	lib${LIB}
 LIB=		ifconfig
 INTERNALLIB=	true
 
+LIBADD=		m
+
 SHLIBDIR?=	/lib
 SHLIB_MAJOR=	1
 SRCS=		libifconfig.c \
diff --git a/rescue/rescue/Makefile b/rescue/rescue/Makefile
index bda45c7d2884..b468a7827914 100644
--- a/rescue/rescue/Makefile
+++ b/rescue/rescue/Makefile
@@ -222,11 +222,12 @@ CRUNCH_PROGS_usr.sbin+= chroot
 CRUNCH_PROGS_usr.sbin+= chown
 CRUNCH_ALIAS_chown= chgrp
 ##################################################################
-CRUNCH_LIBS+= -lm
 
 CRUNCH_LIBS+=		${OBJTOP}/lib/libifconfig/libifconfig.a
 CRUNCH_BUILDOPTS+=	CRUNCH_CFLAGS+=-I${OBJTOP}/lib/libifconfig
 
+CRUNCH_LIBS+= -lm
+
 .if ${MK_ISCSI} != "no"
 CRUNCH_PROGS_usr.bin+=	iscsictl
 CRUNCH_PROGS_usr.sbin+=	iscsid
diff --git a/share/mk/src.libnames.mk b/share/mk/src.libnames.mk
index 197f072f979e..8a7768a8318c 100644
--- a/share/mk/src.libnames.mk
+++ b/share/mk/src.libnames.mk
@@ -390,6 +390,7 @@ _DP_zpool=	md pthread z icp spl nvpair avl umem
 _DP_zutil=	avl tpool
 _DP_be=		zfs spl nvpair
 _DP_netmap=
+_DP_ifconfig=	m
 
 # OFED support
 .if ${MK_OFED} != "no"