I have contributed package Makefiles and patches for jamvm 2.0.0 and classpath 0.99 today. Included in the classpath commit are patches from:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29263
I have tested the packages on Barrier Breaker and Chaos Calmer on several Carambola2 systems, and have built packages for ARM oxnas.
Questions, comments? Please let me know.