For now gm module dependency is mandatory. As far as i know, installing graphicsmagic under Windows is not a trivial task. It requires external header files, or something like that. However, it should be an option to use pngsmith for building sprites on those Windows machines, where it is impossible (or undesirable) to compile graphicsmagic library. On the other hand gm is not needed every time - it's just mandatory when sprites for retina display are being processed.
So I decided to require gm on-demand. It gives a possibility to not use native C++ modules at all when retina images are not used.
For now
gmmodule dependency is mandatory. As far as i know, installinggraphicsmagicunder Windows is not a trivial task. It requires external header files, or something like that. However, it should be an option to usepngsmithfor building sprites on those Windows machines, where it is impossible (or undesirable) to compilegraphicsmagiclibrary. On the other handgmis not needed every time - it's just mandatory when sprites for retina display are being processed.So I decided to require
gmon-demand. It gives a possibility to not use native C++ modules at all when retina images are not used.