Comment 93 for bug 219385

OK, thanks. I mis-assumed, then.

But then, only one of them needs to be made in a single build, right?
i.e. the build is either cairo-gtk2 or cairo-gtk3, so the object files for each build can appear in the same directory, much like how winnt/mac/pango/freetype/gtk/qt builds exist in the gfx/thebes directory.