diff --git a/make.sh b/make.sh
new file mode 100644
index 0000000..9727adb
--- /dev/null
+++ b/make.sh
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+PROG=false
+XPI=private_tab-latest.xpi
+FILES='install.rdf *.manifest *.js *.jsm *.xul *.xml *.html license* *.png defaults modules components locale chrome idl'
+
+for z in 7za 7z zip
+do
+	if command -v $z >/dev/null 2>&1
+	then
+	PROG=$z
+	break
+	fi
+done
+
+if test $PROG = false
+then
+	echo "usable program not found, abort."
+	exit 1
+else
+	echo "use $PROG to create xpi."
+fi
+
+if test $PROG = zip
+then
+	$PROG -9r $XPI $FILES
+else
+	$PROG a -tzip -mm=Deflate -mx9 -mfb258 -mpass=15 $XPI $FILES
+fi
\ No newline at end of file