Error with makepkg installing dependency

[Baho Utot <baho-utot@xxxxxxxxxxxxxxx>]

When compiling packages using makeworld or my custom script I am getting a 
number of failures like this:

/usr/info/dir exists in both 'glib' and 'gtk'

What causes this?  

Is there a way to fix this without forcing this packages?

or better still is there a fix?

Thanks