After

cd xsrc
make clean && make build

making all in config/makedepend...
make: don't know how to make ../../exports/include/X11/Xosdefs.h. Stop

yet
cd xc
make World

works - I think it regenerates the xmakefile that make build uses - but then
you can make clean again, so supposedly the xmakefile that worked remains there,
but after a further make build the same error occurs. Anyone else see this?
I am running csh..

Cheers,

Patrick