Problem compiling gnome-libs

[Joshua Root]

> 1) I assume that this or another error must be occurring on the bulk build
> server as there is no pre-built package.

It's because of the same error. Open a ticket and attach your config.log.

> 2) On my old PB G4 running Leopard, I can get past Configure, but the build
> dies later on with some complaint about libpng include files.

I would guess the configure checks are doing something invalid that
clang treats as an error but old gcc doesn't.

- Josh