cannot make GdkRectangle synonymous to the unregistered type CairoRectangleInt at C:/msys64/mingw64/lib/perl5/site_perl/Gtk3.pm line 479.

[gtk-perl-list TalkVideo net]

A single-line Perl command like:

perl -e "use Gtk3;"

Results in the following error:

cannot make GdkRectangle synonymous to the unregistered type CairoRectangleInt at 
C:/msys64/mingw64/lib/perl5/site_perl/Gtk3.pm line 479.


Below is the relevant info:

perl -V
Summary of my perl5 (revision 5 version 22 subversion 0) configuration:

  Platform:
    osname=MSWin32, osvers=10.0, archname=MSWin32-x64-multi-thread

On MSYS2 /MinGW64 20161025 updated via pacman -Syu

Other Modules:
Glib 1.327
Glib::Object::Introspection 0.045
Cairo 1.106
Cairo::GObject 1.004
Pango 1.227
Gtk2 1.24992


Commenting out these lines in Gtk3.pm:
 479   Glib::Object::Introspection->_register_boxed_synonym (
 480   "cairo", "RectangleInt", "gdk_rectangle_get_type");

"fixes" the problem.

In the BOOT: section of CairoGObject.xs in Cairo::GObject, this exists:
gperl_register_boxed (CAIRO_GOBJECT_TYPE_RECTANGLE_INT, "Cairo::RectangleInt", &rectangle_int_wrapper_class);

So, I am not sure what Gtk3 is complaining about, but BEGIN fails, and that's the end of it.

For testing I use the scripts here: 
https://github.com/dave-theunsub/gtk3-perl-demos

When I comment out the lines as above, most of thsese scripts appear to work.

Thanks