build.xml

<?xml version="1.0"?>

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  Copyright (c) 2016, 2021 IBM Corp. and others

  This program and the accompanying materials are made available under
  the terms of the Eclipse Public License 2.0 which accompanies this
  distribution and is available at https://www.eclipse.org/legal/epl-2.0/
  or the Apache License, Version 2.0 which accompanies this distribution and
  is available at https://www.apache.org/licenses/LICENSE-2.0.

  This Source Code may also be made available under the following
  Secondary Licenses when the conditions for such availability set
  forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
  General Public License, version 2 with the GNU Classpath
  Exception [1] and GNU General Public License, version 2 with the
  OpenJDK Assembly Exception [2].

  [1] https://www.gnu.org/software/classpath/license.html
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  SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
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<project name="Instrumentation javaagent jar" default="build" basedir=".">
	<taskdef resource="net/sf/antcontrib/antlib.xml" />
	<description>
		Build Instrumentation agent java agent
	</description>
	
	<!-- set global properties for this build -->
	<property name="DEST" value="${BUILD_ROOT}/functional/InstrumentationAgent" />

	<!--Properties for this particular build-->
	<property name="src" location="./src" />
	<property name="build" location="./bin" />
	<property name="jarfile" value="${DEST}/instrumentation.jar" />

	<target name="init">
		<mkdir dir="${DEST}" />
		<mkdir dir="${build}" />
	</target>

	<target name="compile" depends="init" description="using java ${JDK_VERSION} to compile the source ">
		<echo>Ant version is ${ant.version}</echo>
		<echo>============COMPILER SETTINGS============</echo>
		<echo>===fork:                         yes</echo>
		<echo>===executable:                   ${compiler.javac}</echo>
		<echo>===debug:                        on</echo>
		<echo>===destdir:                      ${DEST}</echo>
				<javac srcdir="${src}" destdir="${build}" debug="true" fork="true" executable="${compiler.javac}" includeAntRuntime="false" encoding="ISO-8859-1">
					<src path="${src}" />
				</javac>
	</target>

	<target name="dist" depends="compile" description="generate the distribution" >
		<echo>===DEST:				${DEST}</echo>
	    <mkdir dir="${DEST}"/>
	    <jar jarfile="${jarfile}" filesonly="true" manifest="./META-INF/MANIFEST.MF">
			<fileset dir="${build}"/>
	    </jar>
	</target>

	<target name="clean" depends="dist" description="clean up">
		<!-- Delete the ${build} directory trees -->
		<delete dir="${build}" />
	</target>

	<target name="check-jar">
		<available file="${jarfile}" property="jar.exist"/>
	</target>

	<target name="build" depends="check-jar" unless="jar.exist">
		<antcall target="clean" inheritall="true" />
	</target>
</project>