Before running configure and make I set my CC and GCC settings like this:

Well, that isn't going to work very well, see Re: DBD::mysql on Solaris 10 and http://grepanswers.blogspot.com/2011/02/problems-using-cpan-perl-modules-with.html

I suggest you compile your own perl, so all entries in Config will be correct

Also, I don't know what you're attempting with >& perlbug. but DBI support isn't the purpose behind perlbug