Replacement for kde4_add_app_icon ?

[Albert Astals Cid]

Hi, i've been porting some of my apps to KF5 work and I'm noticing there 
doesn't seem to be (or i can't find) a replacement for kde4_add_app_icon.

This seems like a problem for the support in windows/macosX. Is there any plan 
to work on an ecm version? Or it already exists and i failed to find it? Or it 
was decided on purpose not to support it?

Cheers,
  Albert