SNAP Build Issues

As I wanted to try out the new esa-snappy plugin and V10 release is not available yet, I checked out the latest sources and built snap-engine, snap-desktop, st1tbx and esa-snappy and found several build issues.
Where is the place to discuss them?

Hi Christian,
If you have checked out the sources from the master branch, please note that in SNAP 10, the toolboxes are thematically reorganized. The S1 Toolbox including the RadarSat Toolbox now forms the Microwave Toolbox.