git: 49bc071f4088 - main - nsswitch.conf: Avoid modification after installation

The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=49bc071f40886af46eb90467dfef6cba5f95beec

commit 49bc071f40886af46eb90467dfef6cba5f95beec
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2025-04-07 12:42:08 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2025-04-07 12:42:08 +0000

    nsswitch.conf: Avoid modification after installation
    
    To implement WITHOUT_NIS, we have a hack in the build which modifies the
    installed nsswitch.conf to remove NIS compat providers and databases.
    This hack operates on the installed nsswitch.conf, which means that the
    installed file size won't match that listed in the metalog.
    
    One option would be to maintain two copies of nsswitch.conf, one for
    each configuration, but that would result in duplication and I don't see
    a clear way around that.
    
    Instead, stage a copy of nsswitch.conf in the libc objdir, and modify
    that one before installing, so that the version recorded in the metalog
    matches what actually gets installed.
    
    PR:             209718
    Reviewed by:    kevans, emaste
    Sponsored by:   Klara, Inc.
    Sponsored by:   The FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D49300
---
 lib/libc/net/Makefile.inc | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/lib/libc/net/Makefile.inc b/lib/libc/net/Makefile.inc
index 558cf7be5771..58c650b207cf 100644
--- a/lib/libc/net/Makefile.inc
+++ b/lib/libc/net/Makefile.inc
@@ -1,7 +1,7 @@
 # machine-independent net sources
 .PATH: ${LIBC_SRCTOP}/net
 
-CONFS+=	net/hosts net/hosts.equiv net/networks net/nsswitch.conf net/protocols
+CONFS+=	net/hosts net/hosts.equiv net/networks ${.OBJDIR}/nsswitch.conf net/protocols
 SRCS+=	base64.c ether_addr.c eui64.c \
 	gai_strerror.c getaddrinfo.c \
 	gethostbydns.c gethostbyht.c gethostbynis.c gethostnamadr.c \
@@ -176,9 +176,13 @@ MLINKS+=hesiod.3 hesiod_init.3 \
 	hesiod.3 hesiod_end.3
 .endif
 
-afterinstallconfig: modify-nsswitch-conf
-modify-nsswitch-conf: .PHONY
+all: ${.OBJDIR}/nsswitch.conf
+
+# Manually stage nsswitch.conf in the object directory so that we can edit it
+# before installing.
+${.OBJDIR}/nsswitch.conf: ${LIBC_SRCTOP}/net/nsswitch.conf
+	cp -f ${LIBC_SRCTOP}/net/nsswitch.conf ${.TARGET}
 .if ${MK_NIS} == "no"
 	sed -i "" -e 's/.*_compat:/# &/' -e 's/compat$$/files/' \
-		${DESTDIR}/etc/nsswitch.conf
+		${.TARGET}
 .endif