On Thu, 28 May 2009 00:23:52 +0300 "Arttu V." <arttu...@gmail.com> wrote:
> On 5/27/09, Wyatt Epp <wyatt....@gmail.com> wrote: > > Reading this thread, though, it seems like it would be useful to > > have a FEATURES=cpudetection for Portage. > > Congratulations, it's already there! Sort of. -march=native ;) > Not the same thing. "-march=" instructs gcc to produce a binary designed to run only on the given CPU architecture, while USE flags instruct the build system to include or not support for a given feature. Think of the USE flags "this" and "that" as shortcuts to "./configure --enable-this --disable-that". So, for example mplayer could be a binary which can take advantage (or not) of SSSE3 and is designed to run only (or not) on core2. P.S. And what's next - feature like: FEATURES="do_the_best_system_ever" where "do_the_best_system_ever" is a shorthand for: detect_best_cflags detect_best_cxxflags detect_best_ldflags detect_best_uselags Sounds good and it's not against Gentoo philosophy - the end user has the choice to use this feature or not. Any volunteers for the implementation? Oh, wait! Somebody define "best", please! :) -- Best regards, Daniel
