I'd appreciate it if someone could look into why sometimes Makefile.PL fails on windows.
There are four reports here http://testers.cpan.org/show/DBI.html#DBI-1.48 For example http://www.nntp.perl.org/group/perl.cpan.testers/204712 It's not consistent though, as there are reports of success as well. See post_constants() in Makefile.PL for the relevant code. Thanks. Tim.