Как собрать openjfx на Ubuntu 14.04?

Я пытался собрать OpenJFX на Ubuntu 14.04, но я получаю сообщение об ошибке

gradle tasks
:buildSrc:clean
:buildSrc:generateGrammarSource
:buildSrc:compileJava
/home/nika/openjfx/rt/buildSrc/src/main/java/com/sun/scenario/effect/compiler/backend/sw/sse/SSEBackend.java:85: error: ')' expected
    Comparator<Variable> c = (v0, v1) -> v0.getName().compareTo(v1.getName());
                                ^
/home/nika/openjfx/rt/buildSrc/src/main/java/com/sun/scenario/effect/compiler/backend/sw/sse/SSEBackend.java:85: error: ';' expected
    Comparator<Variable> c = (v0, v1) -> v0.getName().compareTo(v1.getName());
                                    ^
2 errors
:buildSrc:compileJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Compilation failed; see the compiler error output for details.

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

 BUILD FAILED

 Total time: 5.334 secs

Кто-нибудь знает, как собрать openjfx на Ubuntu 14.04?