Comment 2 for bug 938986

I'm able to reproduce from trunk this with these steps:

  $ cd indicator-appmenu
  $ mkdir -p build/gtk3/
  $ cd build/gtk3/
  $ ../../configure --srcdir=$PWD/../.. --prefix=/usr
  $ make
  $ make check

hud.interface.c is being built in indicator-appmenu/build/gtk3/src/, but POTFILES doesn't know to look for it there -- it's looking in indicator-appmenu/src/ instead.

This raises an interesting (to me, at least) question about how to get POTFILES.in to understand where to look for files generated from BUILT_SOURCES. However, there is a much faster solution to this ticket: there's nothing in hud.interface.c that needs translation, so removing it from POTFILES.in resolves the problem.