On 3/2/13, Partha Bagchi <partha1b@xxxxxxxxx> wrote: > I thought Gentoo was all about optimizing a linux distribution to your > specific proecessor. :) > > Anyway, try the following optimization and see if it makes a difference in > your setup: > > ./autogen CFLAGS="-O3 -ffast-math -ftree-vectorize" ... Sorry! I spoke in too broad a generalization. *Most* Linux distributions aren't optimized to a specific processor. Gentoo is set up so you roll your own, as is Linux from Scratch (others? Arch?). The Gentoo documentation recommends -O2 for general usage, to be on the safe side. The Linux from Scratch article recommends -O3. Neither article is especially new, so were written in reference to older versions of gcc. Probably what level of optimization does what changes as gcc changes, but according to the gcc documentation, -Ofast includes -ffast-math and -ftree-vectorize. Is there a reason why using "-O3 -ffast-math -ftree-vectorize" might be better than using "-Ofast"? Elle _______________________________________________ gimp-developer-list mailing list gimp-developer-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gimp-developer-list
