🚀 go-pugleaf

In <Mats.Weber-2603961522580001@mlma21.elca-matrix.ch>, Mats.Weber@elca-matrix.ch (Mats Weber) writes:
>>We have a small IBM workstation running AIX 4.1; the script `config.guess'
>>which comes with gcc calls it a "powerpc-ibm-aix4.1.4.0".  On this machine
>>we have gcc version 2.7.2 and it works very well; however, the executables
>>produced by it dump core (illegal instruction) a when run on other AIX
>>machines.
>
>I have heard that this feature was not present in GCC 2.7.x, but would be
>there in 2.8.

You don't need to wait for 2.8.

If you built gcc with that target type, then 2.7.2 defaults to -mcpu=601,
i.e. it generates PowerPC 601 code.

If you compile your programs with -mcpu=common, then they should run on
any RS6k with 4.1. You can make that the default with a small mod to the
gcc source. (Find the definition of PROCESSOR_DEFAULT; change the value 
to 0, IIRC). This will (I have heard) be made the default in 2.8.

It used to be necessary to rebuild libgcc.a as well; I can't tell you if
it is needed with 2.7.2 since our RS6k has just died horribly.

-- Andrew  (andrewg@microlise.co.uk)

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