[cairo] cairo on windows (with perl)

[Tor Lillqvist]

> pkconfig is a linux only utility.

No it isn't. It isn't even a Unix-only utility. You can use pkg-config
just fine on Windows, too. It even has a feature that pkg-config lacks
on Unix: it automatically re-defines the "prefix" variable read from a
.pc file to match the location where the .pc file is found. (I.e. one
can unpack a developer package with .pc file anywhere without need to
edit the .pc file.) Otherwise it works much like on Unix. And there is
even a --msvc-syntax option to turn the -L and -l linker options into
the corresponding Microsoft syntax.

You can download pkg-config for Windows (and GLib which it requires)
from http://www.gtk.org/download-windows.html .

--tml