diff --git a/build.sh b/build.sh
new file mode 100755
index 00000000..6f3ba9e7
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,78 @@
+#!/bin/bash
+# Copyright (C) 2019 Denis 'GNUtoo' Carikli' <GNUtoo@cyberdimension.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+set -e
+
+supported_machines=" \
+    espresso3g \
+    espressowifi \
+    i9100 \
+    i9300 \
+    i9305 \
+    maguro \
+    n5100 \
+    n5110 \
+    n7000 \
+    n7100 \
+"
+
+usage()
+{
+	printf "%s [" "$0"
+	for machine in ${supported_machines} ; do
+		printf "${machine}|"
+	done
+	printf "\b]\n"
+	printf "%s all # build all machines\n" "$0"
+	exit 1
+}
+
+build()
+{
+    machine="$1"
+    parallel_tasks=$(echo "$(grep 'processor' /proc/cpuinfo | wc -l ) + 1" | bc)
+    log="logs/build_${machine}_$(date '+%s').log"
+
+    echo "starting to building for ${machine}: ${log}"
+    source build/envsetup.sh
+    lunch "replicant_${machine}-userdebug"
+    time make -j$parallel_tasks bacon 2>&1 | tee "${log}"
+    vendor/replicant/sign-build "${machine}" | tee -a "${log}"
+    echo "${machine} DONE: ${log}"
+}
+
+if [ $# -ne 1 ] ; then
+	usage
+fi
+
+if [ "$1" = "all" ] ; then
+    for machine in ${supported_machines} ; do
+	build "${machine}"
+    done
+else
+    found=0
+    for machine in ${supported_machines} ; do
+	if [ "${machine}" = "$1" ] ; then
+	    found=1
+	fi
+    done
+
+    if [ ${found} -eq 0 ] ; then
+	printf "machine %s not supported\n" "$1"
+	usage
+    fi
+
+    build "$1"
+fi