Revert "Fix out of tree builds"
Revert "Fix out of tree builds"

This reverts commit e981d4fb3587735b84c42e75cdabc4ee2db090b7.

Distrotech/atk,Distrotech/atk,GNOME/at-spi2-core,GNOME/at-spi2-core,Distrotech/atk,GNOME/at-spi2-core