Hello,

I finally succeeded (cross-)building a -current userland for my SPARCbook, everything is compiled with -mcpu=v8 -mtune=v8 -O2, works fine so far. In case it's useful for others you can get it here:
http://macallan.homeunix.org:6704/stuff/BSD/sparc/snapshots/20050402/
No new GENERIC kernel yet, but a few can be found here:
http://macallan.homeunix.org:6704/stuff/BSD/sparc/

have fun
Michael