>> The big problem I ran into was that in libc there is both an _exit.c
>> and an _Exit.c.
>
>I can't find a source directory with both _exit.c and _Exit.c.
>However, I did find OBJDIR/lib/libc/{_exit,_Exit}.{d,o,po,so},
>DESTDIR/usr/share/man/man2/{_exit,_Exit}.2, and
>DESTDIR/usr/share/man/cat2/{_exit,_Exit}.0

Right, I remember now.  It wasn't that the source files conflicted, it was
that the one object file overwrote the other during the build.  I guess
the simplest solution would be to move the code for _Exit() into _exit.c.

--Ken