Spring 源码编译 出错FAILURE: Build failed with an exception.

编译过程中出现如下错误

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FAILURE: Build failed with an exception.

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* What went wrong:

Execution failed for task ':referencePdf'.

> Java heap space

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* Try:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

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BUILD FAILED

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Total time: 2 mins 0.683 secs

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看下错误日志，发现需要调整 gradlew.bat文件中的?MaxHeapSize 的大小

?set GRADLE_OPTS=-XX:MaxPermSize=512m -Xmx512m -XX:MaxHeapSize=512m %GRADLE_OPTS%