From 63c0c8ed89e1564294ff174b819e520d5977f499 Mon Sep 17 00:00:00 2001
From: Ondřej Surý <ondrej@sury.org>
Date: Sun, 27 Sep 2020 11:08:13 +0200
Subject: debian: Update tools/build-debian-package.sh to use git-buildpackage
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Signed-off-by: Ondřej Surý <ondrej@sury.org>
---
 debian/changelog              |  6 +++++
 tools/build-debian-package.sh | 53 ++++++++++++++++++++++++++++++++-----------
 2 files changed, 46 insertions(+), 13 deletions(-)

diff --git a/debian/changelog b/debian/changelog
index bf51c5cfb..a742cab4e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+frr (7.6~dev-1) UNRELEASED; urgency=medium
+
+  * Update tools/build-debian-package.sh to use git-buildpackage
+
+ -- Ondřej Surý <ondrej@debian.org>  Sun, 27 Sep 2020 11:33:44 +0200
+
 frr (7.4-1) unstable; urgency=medium
 
   [ Ondřej Surý ]
diff --git a/tools/build-debian-package.sh b/tools/build-debian-package.sh
index d21f468bf..bd87ac057 100755
--- a/tools/build-debian-package.sh
+++ b/tools/build-debian-package.sh
@@ -4,24 +4,51 @@
 # This file is public domain
 set -e
 
-cd "`dirname $0`"
-cd ..
+cd "$(dirname "$(dirname "$0")")"
 
-if [ "`id -u`" = 0 ]; then
+if [ "$(id -u)" = 0 ]; then
 	echo "Running as root - installing dependencies"
-	apt-get install fakeroot debhelper devscripts
+	apt-get install fakeroot debhelper devscripts git-buildpackage
 	mk-build-deps --install debian/control
 	exit 0
 fi
 
-git diff-index --quiet HEAD || echo "Warning: git working directory is not clean!"
+git diff-index --quiet HEAD || { echo "ERROR: git working directory is not clean!" ; exit 1; }
 
-echo "Preparing the build"
-tools/tarsource.sh -V
+HEAD_COMMIT=$(git rev-parse --short HEAD)
+HEAD_BRANCH=$(git rev-parse --abbrev-ref HEAD)
+BUILD_BRANCH="debian/$HEAD_BRANCH-$(date +%s)"
 
-echo "Building the Debian package"
-if test $# -eq 0; then
-	dpkg-buildpackage -b -uc -us
-else
-	dpkg-buildpackage "$@"
-fi
+echo "Switching to a '$BUILD_BRANCH' build branch"
+
+git checkout -b "$BUILD_BRANCH" "$HEAD_BRANCH"
+
+UPSTREAM_VERSION=$(sed -ne 's/AC_INIT(\[frr\],\s\[\([^]]*\)\],.*/\1/p' configure.ac | sed -e 's/-\(\(dev\|alpha\|beta\)\d*\)/~\1/')
+LAST_TIMESTAMP=$(git log --format=format:%ad --date=format:%Y%m%d -1 "$HEAD_COMMIT")
+SINCE_COMMIT=$(git log --since="00:00:00" --format=format:%H | tail -1)
+DEBIAN_VERSION="$UPSTREAM_VERSION-$LAST_TIMESTAMP-git.$HEAD_COMMIT-1"
+
+echo "Adding new snapshot debian/changelog entry for $DEBIAN_VERSION"
+
+gbp dch \
+    --debian-branch="$BUILD_BRANCH" \
+    --new-version "$DEBIAN_VERSION" \
+    --since="$SINCE_COMMIT~" \
+    --snapshot \
+    --commit
+
+echo "Building package"
+
+gbp buildpackage \
+    --git-builder=debuild \
+    --git-debian-branch="$BUILD_BRANCH" \
+    --git-force-create \
+    --git-no-pristine-tar
+
+echo "Switching back to '$HEAD_BRANCH' branch"
+
+git checkout "$HEAD_BRANCH"
+
+echo "Deleting the '$BUILD_BRANCH' build branch"
+
+git branch -D "$BUILD_BRANCH"
-- 
cgit v1.2.3