diff --git a/contrib/jenkins-build-osmo-nitb.sh b/contrib/jenkins-build-osmo-nitb.sh
index 86d787c..76fd6ba 100755
--- a/contrib/jenkins-build-osmo-nitb.sh
+++ b/contrib/jenkins-build-osmo-nitb.sh
@@ -1,82 +1,15 @@
 #!/bin/sh
 set -e -x
-
 base="$PWD"
-prefix="$base/inst-osmo-nitb"
+name="osmo-nitb"
+. "$(dirname "$0")/jenkins-build-common.sh"
 
-rm -f "$base/osmo-nitb*.tgz"
+build_repo libosmocore
+build_repo libosmo-abis
+build_repo libosmo-netif
+build_repo openggsn
+build_repo libsmpp34
+build_repo libosmo-sccp
+build_repo openbsc --enable-smpp --enable-osmo-bsc --enable-nat
 
-deps="
-libosmocore
-libosmo-abis
-libosmo-netif
-openggsn
-libsmpp34
-libosmo-sccp
-openbsc
-"
-
-have_repo() {
-	repo="$1"
-	cd "$base"
-	if [ ! -d "$repo" ]; then
-		git clone "git://git.osmocom.org/$repo" "$repo"
-	fi
-	cd "$repo"
-	git clean -dxf
-	git fetch origin
-	git reset --hard origin/master
-	git rev-parse HEAD
-	cd "$base"
-}
-
-rm -rf "$prefix"
-mkdir -p "$prefix"
-
-export PKG_CONFIG_PATH="$prefix/lib/pkgconfig"
-export LD_LIBRARY_PATH="$prefix/lib"
-
-for dep in $deps; do
-	set +x; echo "
-
-====================== $dep
-
-"; set -x
-
-	have_repo "$dep"
-	cd "$dep"
-	rm -rf *
-	git checkout .
-
-	echo "$(git rev-parse HEAD) $dep" >> "$prefix/osmo-nitb_git_hashes.txt"
-
-	config_opts=""
-
-	case "$dep" in
-	'openbsc')
-		config_opts="$config_opts --enable-smpp --enable-osmo-bsc --enable-nat"
-		cd openbsc/
-	;;
-	esac
-
-	autoreconf -fi
-	set +x;	echo; echo; set -x
-	./configure --prefix="$prefix" $config_opts
-	set +x;	echo; echo; set -x
-	make -j8 || make  # libsmpp34 can't build in parallel
-	set +x;	echo; echo; set -x
-	make install
-done
-
-# don't package documentation -- the libosmocore docs can be up to 16 Mb large,
-# a significant amount compared to the binaries
-rm -rf "$prefix/share/doc"
-
-# build the archive that is going to be copied to the tester
-rm "$base"/*.tgz "$base"/*.md5 || true
-cd "$prefix"
-this="osmo-nitb.build-${BUILD_NUMBER}"
-tar="${this}.tgz"
-tar czf "$base/$tar" *
-cd "$base"
-md5sum "$tar" > "${this}.md5"
+create_bin_tgz