I successfully bootstrapped GCC 3.0.4 (C compiler only) in NetBSD/vax 1.5.2:

# uname -a
NetBSD  1.5.2 NetBSD 1.5.2 (GENERIC) #7: Sun Aug 19 12:43:34 PDT 2001     matt@cougar.local:/u1/kobj/GENERIC vax
# ./config.guess
vax-unknown-netbsd1.5.2
# /usr/local/gcc3/bin/gcc -v
Reading specs from /usr/local/gcc3/lib/gcc-lib/vax-unknown-netbsd1.5.2/3.0.4/specs
Configured with: ./configure --prefix=/usr/local/gcc3 --enable-languages=c
Thread model: single
gcc version 3.0.4

-- 
Lars Brinkhoff          http://lars.nocrew.org/     Linux, GCC, PDP-10,
Brinkhoff Consulting    http://www.brinkhoff.se/    HTTP programming