Citrus Perl Release 12 provides updated Wx components and an upgraded
GD module. Previous editions compiled the GD module with a default
configuration which did not provide full access to all of the features
available in libgd.
On MS Windows Citrus Perl is now 100% compiled using gcc and is
supported by a release of the gcc 4.6.2 compiler. If upgrading from a
prior version of Citrus Perl, you may extract the new edition over the
old and retain your compiled modules. However, you should first delete
your CitrusPerl\mingw32 ( CitrusPerl\mingw64) and CitrusPerl\dmake
directories as the content is incompatible with this new release.
http://www.citrusperl.com