Michael Marsh wrote: > The configure scripts are referring to directly to /usr/lib/cpp? If > so, that's a bug. The compiler knows what the right preprocessor to > use is, and it should be making that decision. I agree. But finally I found, that setting the environment variable 'CPP' helped the configure script. So besides CC and CXX, I now set CPP to use the *-3.4 version. Thanx for helping anyway. Martin