gmp build fails on UltraSPARC T1 for 64 bits (32 works)

Torbjorn Granlund tege at
Tue Apr 25 21:48:15 CEST 2006

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Does it say ultrasparct1-something now?

This isn't going to be sufficient to make the build work with the
compiler used (because of the addc breakage).  I see two possibilities
for getting a 64-bit build:

1. Compile a real gcc and use that for building GMP.

2. Disable all machine dependent code, configuring with --host=none.

(I don't think we should spend a lot of work trying to make things run
faster on these machines.  But we should try to make GMP work if we
can work around the addc breakage.  I don't care for speeding up
things for a present day machine from 150x slower than the competition
to (say) a mere 50x slower.  Sun customers that need radically better
GMP performance can complement their nifty T1 with a used PC. :-)


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