diff --git a/3rdparty/extras/wscript b/3rdparty/extras/wscript
new file mode 100644
index 00000000..9d249bac
--- /dev/null
+++ b/3rdparty/extras/wscript
@@ -0,0 +1,29 @@
+#! /usr/bin/env python
+# encoding: utf-8
+
+import os
+
+def options(opt):
+	pass
+
+def configure(conf):
+	if not conf.path.find_dir('xash-extras'):
+		conf.fatal('Can\'t find xash-extras submodule.')
+		return
+
+	conf.load('zip')
+
+def build(bld):
+	srcdir = bld.path.find_dir('xash-extras')
+
+	if bld.env.DEST_OS in ['android']:
+		install_path = bld.env.PREFIX
+	else:
+		install_path = os.path.join(bld.env.SHAREDIR, bld.env.GAMEDIR)
+
+	bld(features='zip',
+		name = 'extras.pk3',
+		files = srcdir.ant_glob('**/*'),
+		relative_to = srcdir,
+		compresslevel = 0,
+		install_path = install_path)
diff --git a/scripts/waifulib/zip.py b/scripts/waifulib/zip.py
index 119f028b..12f5e44a 100644
--- a/scripts/waifulib/zip.py
+++ b/scripts/waifulib/zip.py
@@ -1,7 +1,7 @@
 #! /usr/bin/env python
 # encoding: utf-8
 
-from waflib import TaskGen, Task, Logs
+from waflib import TaskGen, Task, Logs, Utils
 import zipfile
 
 class ziparchive(Task.Task):
@@ -51,3 +51,12 @@ def create_zip_archive(self):
 
 	setattr(tsk, 'compresslevel', compresslevel)
 	setattr(tsk, 'relative_to', relative_to)
+
+	try:
+		inst_to = self.install_path
+		self.install_task = self.add_install_files(
+			install_to=inst_to, install_from=target,
+			chmod=Utils.O644, task=tsk)
+
+	except AttributeError:
+		pass