During build.sh install I get this error today:

Copying set comp
pax: Unable to access ./usr/share/man/cat1/cccp.0 (No such file or directory)
pax: Unable to access ./usr/share/man/man1/cccp.1 (No such file or directory)

If I copy the missing files into /usr/obj/destdir.i386/usr/share/man/man1
(and cat1) then the install completes without error.