比如,编译时指定目录:

<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-compiler-plugin</artifactId>
    <version>3.3</version>
	<configuration>
		<source>1.8</source>
		<target>1.8</target>
		<compilerArguments>
			<bootclasspath>${JAVA_HOME}/jre/lib/rt.jar</bootclasspath>
            <extdirs>${project.basedir}/src/lib</extdirs>
		</compilerArguments>
	</configuration>
</plugin>

如果想设置编译时的大内存,参考:

https://quantum6.blog.csdn.net/article/details/114068114