The branch main has been updated by des:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=53a3d4760eb90c89bf04636c957511882d7f347d

commit 53a3d4760eb90c89bf04636c957511882d7f347d
Author:     Dag-Erling Smørgrav <[email protected]>
AuthorDate: 2026-06-22 18:59:18 +0000
Commit:     Dag-Erling Smørgrav <[email protected]>
CommitDate: 2026-06-22 18:59:41 +0000

    etcupdate: Warn if the tree hasn't been built
    
    Warn the user before trying `make installetc` if etcupdate was invoked
    without -b (or with -B) and it appears that `make buildetc` hasn't
    already been run (which usually happens as part of `make buildworld`).
    
    MFC after:      1 week
    Reviewed by:    jhb
    Differential Revision:  https://reviews.freebsd.org/D57504
---
 usr.sbin/etcupdate/etcupdate.sh | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/usr.sbin/etcupdate/etcupdate.sh b/usr.sbin/etcupdate/etcupdate.sh
index 404ad434da00..4743e81a1562 100755
--- a/usr.sbin/etcupdate/etcupdate.sh
+++ b/usr.sbin/etcupdate/etcupdate.sh
@@ -200,6 +200,7 @@ build_tree()
 
        log "Building tree at $1 with $make"
 
+       exec 4>&2
        exec >&3 2>&1
 
        mkdir -p $1/usr/obj
@@ -216,7 +217,16 @@ build_tree()
        else
                (
                        cd $SRCDIR || exit 1
-                       if ! [ -n "$nobuild" ]; then
+                       if [ -n "$nobuild" ]; then
+                               # Check for prior build
+                               objdir=$($make -V .OBJDIR)
+                               if ! [ -f "${objdir}/${BUILD_SENTINEL}" ]; then
+                                       cat <<EOF >&4
+Build sentinel not found in object directory, did you forget to make
+buildworld or pass -b to etcupdate?
+EOF
+                               fi
+                       else
                                export MAKEOBJDIRPREFIX=$destdir/usr/obj
                                if [ -n "$($make -V.ALLTARGETS:Mbuildetc)" ]; 
then
                                        $make buildetc || exit 1
@@ -1900,6 +1910,9 @@ EDITOR=${EDITOR:-/usr/bin/vi}
 # Files that need to be updated before installworld.
 PREWORLD_FILES="etc/master.passwd etc/group"
 
+# A file we know the build produces in the object directory.
+BUILD_SENTINEL=etc/termcap/termcap.small
+
 # Handle command-specific argument processing such as complaining
 # about unsupported options.  Since the configuration file is always
 # included, do not complain about extra command line arguments that

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