$ cd openjdk-jfx/ $ bash ./gradlew clean build Preparation: Default java musst be Java 11.0.2, 12 or 13. On a Mac Xcode (accept license!) must be installed. We also need the SDK of the latest JavaFX EA build. Finish: Copy missing libraries from latest EA build to openjdk-jfx/build/sdk/lib/. Use new SDK in some JavaFX-Project.