Cross Compiling, Target String, etc...

Michael Eager eager@eagercon.com
Thu Jun 19 17:45:00 GMT 2003


Jakub Sadowski wrote:
> Cross-Compiling...man what confusion...
> 
> What is the significance of the host string that follows target=<host> (sometimes
> CROSS_COMPILE=<host>)?  It's format is <CPU>-<BRAND>-<KERNEL>-<OS>.  I've checked glibc-2.3.1 and
> it WILL NOT matter what you place for <BRAND> (see glibc-2.3.1/INSTALL, under supported
> configurations).  Is there any rhyme or reason for this naming scheme?  How do I predict what a
> host string should be?  i.e. I want to compile for a Celeron based pc running linux.  What's my
> <HOST> string?  i686-pc-linux-gnu?  x86-unknown-linux?  Celeron-outdatedworkstation-linux-gnu?

There is a rhyme and reason to the naming scheme.  Or, perhaps, a variety of different
rhymes and reasons, depending on who added the target triple to gcc and other packages.
Sometimes a triple which works with one package will not be accepted by another.
As you noticed, most packages ignore BRAND, or only use it sporadically.

Take a look at config.gcc to see what triples are defined.  Pick one which looks
reasonable.  In your situation, i686-pc-linux-gnu would appear appropriate.

-- 
Michael Eager	 Eager Consulting     eager@eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077



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