C:\Perl\cpan\build\Net-LibIDN-0.11-QaNUHQ>perl Makefile.PL --with-libidn=libidn- 1.9 --with-libidn-inc=libidn-1.9\lib Set up gcc environment - 3.4.5 (mingw-vista special r3) In file included from __test1.c:1: libidn-1.9/lib/idna.h:31:38: idn-int.h: No such file or directory In file included from __test1.c:1: libidn-1.9/lib/idna.h:67: error: syntax error before '*' token libidn-1.9/lib/idna.h:69: error: syntax error before '*' token libidn-1.9/lib/idna.h:74: error: syntax error before '*' token libidn-1.9/lib/idna.h:82: error: syntax error before '*' token libidn-1.9/lib/idna.h:86: error: syntax error before "uint32_t" This module requires GNU Libidn, which could not be found.