binutils: elf e_machine values discrepancy

[Bates, Rod]

This is primarily a binutils question (Is there another
forum, more appripriate?) 

I am trying to build egcs-1.1.2 on a Concurrent PowerMax machine.
This platform is powerpc, big endian, and uses elf. 

The native as builds elf headers with e_machine value 11,
which their documentation labels as "IBM RS/6000 and PowerPC".

The binutils I built produce e_machine value EM_POWERPC = 20.
in binutils, include/common.h lists EM_OLD_SPARCV9 as
having value 11.  
 
stage1/xgcc won't link cccp because of this.   From what I
see, it appears I have to get a version of egcs/as/ld/whatever
which will handle the .o files produced by the native tools.
The failing step is trying to link to installed native libraries.  
 
I am using binutils 2.9.1.0.25.  The configuration I am 
trying is powerpc-harris-elf.  

Config.guess can't recognize this system.  Its closest-looking 
known system name is powerpc-harris-powerunix. 
(Harris is a predecessor to Concurrent, and PowerUnix
was the name used for a predecessor OS to PowerMax.) 
However, configure doesn't recognize powerpc-harris-powerunix
either. 

Rodney Bates