gEDA: Odd behavior of make in util dir?

[sdb-at-NOSPAMcloud9_dot_net (Stuart Brorson)]

Hi Guys --

While working on integrating some stuff in the util dir, I noticed
something strange.   The Makefiles are set up to create object files
with double names.  Example:

-rwxrwxr-x  1 sdb sdb 75435 Aug  7 19:39 gsch2pcb
-rw-rw-r--  1 sdb sdb 39992 Feb 23 20:21 gsch2pcb.c
-rw-rw-r--  1 sdb sdb 91084 Aug  7 19:39 gsch2pcb-gsch2pcb.o

Gsch2pcb's object file is gsch2pcb-gsch2pcb.o.

Is this the desired and/or expected behavior?  I just noticed this,
and can't figure out why it is happening.  There is nothing in
Makefile.am to cause this to happen as far as I can tell.  Other
directories have .o files with normal names.  I am kinda baffled.

Stuart