Revert "debian: Remove the changelog-auto automation in favor of dch"

This reverts commit cace1d9.

.gitignore

@@ -28,6 +28,7 @@
 /aclocal.m4
 /libtool
 /libtool.orig
+/debian/changelog-auto
 
 /Makefile
 /Makefile.in

configure.ac

@@ -2484,6 +2484,7 @@ AC_CONFIG_FILES([Makefile],[
 
 AC_CONFIG_FILES([
 	  config.version
+	  debian/changelog-auto
 	  redhat/frr.spec
 	  alpine/APKBUILD
 	  snapcraft/snapcraft.yaml

debian/changelog-auto.in

@@ -0,0 +1,7 @@
+frr (@VERSION@-0) UNRELEASED; urgency=medium
+
+  * autoconf changelog entry -- for git autobuilds only.
+    remove and replace when creating releases!
+    (tools/tarsource.sh will handle this)
+
+ -- FRRouting-Dev <dev@lists.frrouting.org>  @DATE@

doc/developer/packaging-debian.rst

@@ -35,11 +35,14 @@ buster.)
    Alternatively, you can manually install build dependencies for your
    platform as outlined in :ref:`building`.
 
-4. Install `git-buildpackage` package:
+4. Run ``tools/tarsource.sh -V``:
 
    .. code-block:: shell
 
-      sudo apt-get install git-buildpackage
+      ./tools/tarsource.sh -V
+
+   This script sets up the ``debian/changelog-auto`` file with proper version
+   information.
 
 5. (optional) Append a distribution identifier if needed (see below under
    :ref:`multi-dist`.)
@@ -48,7 +51,7 @@ buster.)
 
    .. code-block:: shell
 
-      gbp-buildpackage --git-builder=debuild $options
+      dpkg-buildpackage $options
 
    Where `$options` may contain any or all of the following items:
 

tools/tarsource.sh

@@ -271,16 +271,17 @@ lsfiles="frr-${PACKAGE_VERSION}.tar.$zip"
 
 if $debian; then
 	if ! $adjchangelog; then
-		dch --force-bad-version \
-		    --force-distribution \
-		    --preserve \
-		    --newversion "$DEBVER" \
-		    "autoconf changelog entry -- for git autobuilds only."
+		GIT_DATE=$(git log --format=format:%ad -1 --date=rfc)
+		sed -e "s/@DATE@/$GIT_DATE/" \
+			< debian/changelog-auto \
+			> "$tmpdir/debian/changelog"
 	fi
 	cat debian/changelog >> "$tmpdir/debian/changelog"
 	DEBVER="`dpkg-parsechangelog -l\"$tmpdir/debian/changelog\" -SVersion`"
 
 	eval $debsrc | tar -cho $taropt \
+		--exclude debian/changelog \
+		--exclude debian/subdir.am \
 		-T - -f ../frr_${DEBVER}.debian.tar
 	# add specially prepared files from above
 	tar -uf ../frr_${DEBVER}.debian.tar $taropt -C "$tmpdir" debian/changelog