We have built OpenMPI-1.0 with our compilers, but don't build SVN.
In your case you seem to have some kind of SUSE weirdness going on. Is
it possible you have a gcc-3.3 compatibility package of some kind
installed? We should probably take this conversation over to
support_at_[hidden], but the next step is to try "pathcc -v
hello.c", and also
/usr/bin/gcc -E "foo bar"