diff --git a/contrib/jenkins-build-osmo-bts-sysmo.sh b/contrib/jenkins-build-osmo-bts-sysmo.sh
index 9838834..dad2151 100755
--- a/contrib/jenkins-build-osmo-bts-sysmo.sh
+++ b/contrib/jenkins-build-osmo-bts-sysmo.sh
@@ -1,92 +1,23 @@
 #!/bin/sh
 set -e -x
 
-deps="
-libosmocore
-libosmo-abis
-osmo-bts
-"
+poky="/opt/poky/1.5.4"
+. "$poky/environment-setup-armv5te-poky-linux-gnueabi"
+
+# Cross-compilation: all installations need to be put in the sysmo SDK sysroot
+export DESTDIR="$poky/sysroots/armv5te-poky-linux-gnueabi"
 
 base="$PWD"
-rm -f "$base/osmo-bts-sysmo.*.tgz"
-
-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"
-}
-
-for dep in $deps; do
-    have_repo "$dep"
-done
+name="osmo-bts-sysmo"
+prefix="/usr/local/jenkins-build/inst-$name"
+prefix_real="$DESTDIR$prefix"
+. "$(dirname "$0")/jenkins-build-common.sh"
 
 # for gsm_data_shared.h
 have_repo openbsc
 
-. /opt/poky/1.5.4/environment-setup-armv5te-poky-linux-gnueabi
+build_repo libosmocore --disable-pcsc
+build_repo libosmo-abis
+build_repo osmo-bts --enable-sysmocom-bts --with-openbsc=$base/openbsc/openbsc/include
 
-# Cross-compilation: all installations need to be put in the sysmo SDK sysroot
-export DESTDIR="/opt/poky/1.5.4/sysroots/armv5te-poky-linux-gnueabi"
-
-prefix_base="/usr/local/jenkins-build"
-prefix_base_real="$DESTDIR$prefix_base"
-rm -rf "$prefix_base_real"
-
-prefix="$prefix_base/inst-osmo-bts-sysmo"
-prefix_real="$DESTDIR$prefix"
-mkdir -p "$prefix_real"
-
-# Installation in non-system dir, but keep the PKG_CONFIG_PATH from the SDK:
-export PKG_CONFIG_PATH="$prefix_real/lib/pkgconfig:$PKG_CONFIG_PATH"
-
-env
-
-for dep in $deps; do
-	set +x; echo "
-
-====================== $dep
-
-"; set -x
-
-        cd "$base/$dep"
-        rm -rf *
-        git checkout .
-
-        echo "$(git rev-parse HEAD) $dep" >> "$prefix_real/osmo-bts-sysmo_git_hashes.txt"
-
-        autoreconf -fi
-
-        config_opts=""
-        case "$dep" in
-        'libosmocore')    config_opts="--disable-pcsc" ;;
-        'osmo-bts')       config_opts="--enable-sysmocom-bts --with-openbsc=$base/openbsc/openbsc/include" ;;
-        esac
-
-	set +x;	echo; echo; set -x
-        ./configure --prefix="$prefix" $CONFIGURE_FLAGS $config_opts
-	set +x;	echo; echo; set -x
-        make -j8
-	set +x;	echo; echo; set -x
-        make install
-done
-
-# don't package documentation -- the libosmocore docs can be up to 16 Mb large,
-# a significant amount compared to the binaries
-rm -rf "$prefix_real/share/doc"
-
-# build the archive that is going to be copied to the tester and then to the BTS
-rm "$base"/*.tgz "$base"/*.md5 || true
-cd "$prefix_real"
-this="osmo-bts-sysmo.build-${BUILD_NUMBER}"
-tar="${this}.tgz"
-tar czf "$base/$tar" *
-cd "$base"
-md5sum "$tar" > "${this}.md5"
+create_bin_tgz