CPAN.pm: Going to build T/TH/THOR/Net-LibIDN-0.11.tar.gz

Set up gcc environment - 3.4.5 (mingw-vista special r3)
'cc' is not recognized as an internal or external command,
operable program or batch file.
__test1.c:1:18: idna.h: No such file or directory
This module requires GNU Libidn, which could not be found.
  THOR/Net-LibIDN-0.11.tar.gz
  C:\Perl\bin\perl.exe Makefile.PL INSTALLDIRS=site -- NO Makefile created
Running make test
  Make had some problems, won't test
Running make install
  Make had some problems, won't install