Canonical system names

[Rasmus Tamstorf]

Hi,

On some systems there are more variables which distinguish configurations
than simply cpu, vendor and os. On mips and sparc for example you can
build 32 or 64 bit code, and on, say, a mips R10K you can build your code
using either the mips3 or the mips4 instruction set. What's the "proper"
way to encode this kind of information in the canonical names (as returned
by config.guess/config.sub) ? I'd like to be able to do something like : 

  ./configure --build=mips4_n32

Rasmus

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