During my last make build using a freshly built current from
1.3-alpha, I got

make: uname: Bad address

Indeed, just running uname gives the same (uname: uname: Bad address)
error, yet eg. sysctl kern.hostname works. I tried this with a kernel
with and without UVM if that matters, and was building for the first
time with UVM=1.

I don't know where to look - can't "make" anything!

Cheers,

Patrick