Besides the expected user error (quickly solved after I bitchslapped myself), I had no problem compiling openssh-SNAP-20110115.tar.gz in Solaris 10 sparc (using sunfreeware's gcc) and on OSX 10.5.8 PPC. If nobody has done it yet, I can do in 10.6.something/intel and maybe AIX 5.something/Solaris8/whatever else I find here doing nothing.