[Ardour-Dev] weird asm error on core2 in FPU_OPTIMIZATION code (2.0-ongoing)

Paul Davis paul at linuxaudiosystems.com
Sun Jun 21 07:48:04 PDT 2009

2009/6/21 Jörn Nettingsmeier <nettings at stackingdwarves.net>:
> i see. thanks for the clarification. i'll file a heads-up bug in mantis
> with this explanation in it, so that people who run into this issue have
> a chance to find it. maybe in the future a more robust way to determine
> bit width can be found - or maybe 32/64 bit systems will just die out...

the problem is that there is no "right" or "more robust" way to do
this - its really a choice.  you can (a) optimize the app for the CPU
that you appear to have or (b) don't try to be clever about that, and
leave gcc to do it "well enough" or (c) provide your own flags. by
default, ardour's build system picks (a). FPU_OPTIMIZATION is
equivalent to (b) and ARCH is equivalent to (c).

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