How to build from GitHub sources?

Hi, maybe I do something wrong but I tried to build the master (also the v3.2.0-RC3) branch from GitHub with ./gradlew idea but I fail with some compilation errors. Even ./gradlew install doesn’t work. Is there any secret how to build the sources? I thought gradle is self containing everything to build itself.

Please give me a hint and maybe add this hint to the GitHub README :slight_smile: