diff --git a/o2server/build.xml b/o2server/build.xml
index 3e32903518857f4160c8350cf14822e631948117..7fecd1f48574bbf314120d91ad8df3e846566f10 100644
--- a/o2server/build.xml
+++ b/o2server/build.xml
@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project basedir="." name="main" default="default">
 	<basename property="project" file="${basedir}" />
+	<mkdir dir="${basedir}/commons/ext" />
+	<mkdir dir="${basedir}/store/jars" />
 	<path id="project.classpath">
 		<fileset dir="${basedir}/commons/ext">
 			<include name="*.jar" />
diff --git a/o2server/build_common.xml b/o2server/build_common.xml
index 1abccf1be6f9f9b8525563025c5e5ac4da3d9253..6e22051f435bae060de77952e7d85d909551f014 100644
--- a/o2server/build_common.xml
+++ b/o2server/build_common.xml
@@ -2,6 +2,8 @@
 <project>
 	<basename property="project" file="${basedir}" />
 	<dirname property="o2server.dir" file="./" />
+	<mkdir dir="${o2server.dir}/commons/ext" />
+	<mkdir dir="${o2server.dir}/store/jars" />
 	<path id="project.classpath">
 		<fileset dir="${o2server.dir}/commons/ext">
 			<include name="*.jar" />