Re: [Gimp-developer] Ways to improve Gimp 2.9 performance

[Nicolas Robidoux <nicolas robidoux gmail com>]

Elle:

Factor of two in some cases. Not bad for two simple flags (-march=native -Ofast).

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If anybody wonders why -march=native is not used by these libraries by default, it's because it makes the binaries non-portable.

Also, the default build uses -g, which turns on debugging, for obvious reasons, but which of course gets in the way of performance.