这是OpenJFX安装手册：
https://wiki.openjdk.java.net/display/OpenJFX/Building+OpenJFX#BuildingOpenJFX-Mac
获取源代码并运行gradle后，我面临以下错误：> gradle clean
:buildSrc:generateGrammarSource UP-TO-DATE
:buildSrc:compileJava UP-TO-DATE
:buildSrc:compileGroovy UP-TO-DATE
:buildSrc:processResources UP-TO-DATE
:buildSrc:classes UP-TO-DATE
:buildSrc:jar UP-TO-DATE
:buildSrc:assemble UP-TO-DATE
:buildSrc:compileTestJava UP-TO-DATE
:buildSrc:compileTestGroovy NO-SOURCE
:buildSrc:processTestResources NO-SOURCE
:buildSrc:testClasses UP-TO-DATE
:buildSrc:test UP-TO-DATE
:buildSrc:check UP-TO-DATE
:buildSrc:build UP-TO-DATE
FAILURE: Build failed with an exception.
* Where:
Script '/home/maso/hg/rt/buildSrc/linux.gradle' line: 77
* What went wrong:
A problem occurred evaluating script.
> Cannot invoke method split() on null object