<?xml version="1.0" encoding="UTF-8"?>
<project name="TestProj" default="war" basedir=".">
<property name="project-name" value="${ant.project.name}" />
<property name="builder" value="IaasTeam" />
<property name="war-file-name" value="${project-name}.war" />
<property name="source-directory" value="src" />
<property name="classes-directory" value="build/classes" />
<property name="web-directory" value="WebContent" />
<property name="web-xml-file" value="WebContent/WEB-INF/web.xml" />
<property name="lib.dir" value="WebContent/WEB-INF/lib" />
<property name="catalina.home" value="../../outside/project/lib"/>

<tstamp prefix="build-info">
    <format property="current-date" pattern="d-MMMM-yyyy" locale="en" />
    <format property="current-time" pattern="hh:mm:ss a z" locale="en" />
</tstamp>
<property name="build-directory" value="build" />
<path id="classpath">
    <fileset dir="${lib.dir}" includes="**/*.jar"/>
    <fileset dir="${catalina.home}" includes="**/*.jar"/>
</path>
<target name="clean">
     <delete dir="build"/>
</target>
<target name="compile">
      <mkdir dir="build/classes"/>
      <javac includeantruntime="false" srcdir="src" destdir="build/classes" classpathref="classpath" />
</target>
<target name="war" depends="clean,compile">
    <mkdir dir="${build-directory}" />
    <delete file="${build-directory}/${war-file-name}" />
    <war warfile="${build-directory}/${war-file-name}" webxml="${web-xml-file}">
        <classes dir="${classes-directory}" />
        <fileset dir="${web-directory}">
            <!-- Need to exclude it since webxml is an attribute of the war tag above -->
            <exclude name="WEB-INF/web.xml" />
        </fileset>
        <manifest>
            <attribute name="Built-By" value="${builder}" />
            <attribute name="Built-On" value="${build-info.current-date}" />
            <attribute name="Built-At" value="${build-info.current-time}" />
        </manifest>
    </war>
</target>

compile:
[mkdir] Created dir: /app/infra/jenkins/workspace/TestProj/build/classes
[javac] Compiling 49 source files to   /app/infra/jenkins/workspace/TestProj/build/classes

BUILD FAILED
/app/infra/jenkins/workspace/TestProj/build.xml:27:  /app/infra/jenkins/outside/project/lib does not exist.