So the problem is SUSE OBS doesn't have Maven or Gradle build tools necessary for building OpenJDK and OpenJFX without Icedtea? Well Maven has been available for a long time at devel:tools:building (though not an official repository), and Gradle are part of the official OpenSUSE distribution. However from what I have seen from OpenJDK documentation it is built with make not maven/gradle. http://openjdk.java.net/groups/build/