I have compiled GGNFS using the default settings (Makefile ->
Makefile.athlon) and even successfully factored a SNFS difficulty 165
number on my first try. (It took about 82 hours on a 1.8GHz T2400
running on a single core.)

I am using the following source code:

http://www.math.ttu.edu/~cmonico/software/ggnfs/devel/ggnfs-0.77.0.tar.gz

I wanted to see if the x86 version was faster so I set Makefile ->
Makefile.x86 and compiled it, but GGNFS stops execution when it tries
to invoke matbuild.exe because matbuild.c is not compiled in the
Makefile.x86 make file.

I just copied over the matbuild.exe from my original build for now and
it works fine.

I guess I'm posting this as sort of a bug report, but more likely I am
just doing something wrong.

BTW, I have tested this on both a Debian system and a Cygwin system.

:)

--
Mike (Xyzzy)