in reply to
Re^3: Installing Tk problems with Active State on Windows
in thread Installing Tk problems with Active State on Windows
But there is no bufferoverflowU stuff in Makefile.PL
Correct. It's to be found in perl/lib/Config_heavy.pl - so remove all (2, I think) occurrences of bufferoverflowU.lib from that file to fix that problem.
But, unlike 32-bit ActivePerl and 32-bit MinGW, 64-bit ActivePerl won't work with 64-bit MinGW straight out of the box. (ExtUtils::FakeConfig needs to be installed.)