On Sat, 22 Jan 2005 19:34:16 -0600, Andrew Gaffney <[EMAIL PROTECTED]> wrote: > Nick Smith wrote: > > i was reading up on the wiki and came across the 'Ultimate Gentoo Box' i > > want to give it a shot i just had a couple questions. > > > > 1. i think i want to give ~x86 a try, i find myself adding more and more > > keywords to my package.keywords file anyway. how to i go about getting > > everything ~x86? and if so, is it "known" to break things all the time? > > or are people running pure ~x86 with no problems? also how to i tell the > > system to replace all the packages with ~x86 ones? and finally what > > happens to the things that are in my package.keywords file now? > > a) ACCEPT_KEYWORDS="~x86" in /etc/make.conf > b) I've been running ~x86 for 2 years with minimal breakage > c) There will never be *no* problems > d) emerge -uD world > e) if you do a), the entries in package.keywords will just be redundant
Ditto. I've been running ~x86 for a long time with fewer problems than with x86. Most of the problems have been with packages that failed to compile when first marked ~x86, but soon were fixed. My system might be considered bleeding edge, but there's no blood in sight. I don't believe you need to recompile anything (see also below); just let 'emerge -u world' upgrade what is needed. The one thing you should not do (IMO) is to run ~x86 for a while and then revert to x86 without recompiling everything. This has been reported to create problems. > > > 2. the CFLAGS on their looked really interesting and i think i want to > > recompile my entire system with those flags, how do i go about doing > > that? will an 'emerge -euD world' work? or is there something else i > > have to do to get it to recompile everything? > > 'emerge -e world' should do the trick. > > > 3. could someone please explain to me in plain english ( i have read > > about them online ) what the main difference is between -O3 and -O2? i > > know -O3 is more optimized, but which is better to make the system > > perform better? the wiki site im refering to states he uses -O2, i am > > currently using -O3 when i did my stage one install. what is going to > > make my system perform better? > > -O3 is more optimized than -O2, but those optimizations usually make the > binaries larger which causes other slowdowns. The ideal system-wide > optimization > level is -O2 or -Os (-O2 with additional flags for small binaries). > > > im running a p4 2.4Ghz laptop with 1gig ram ati mobility video, and if > > this works i have several other systems i want to do the same thing > > with. (except the server) > > -O2 and -O3 are quite similar, but -O3 inlines certain functions and thus the executables are somewhat larger. My personal opinion is switch to -O2, but I don't believe you need to recompile anything unless you want to, in which case fire off an 'emerge -e world'. IMO, avoid -Os. There are some packages (can't remember which) that don't work well with -Os, and the ebuilds usually filter out -Os in favor of -O2. -Os executables will be somewhat smaller, but your system has enough oomph to handle the -O2 optimized executables. Whatever you do, I doubt that you'll notice much difference between -O2 and -O3. -- Collins -- gentoo-user@gentoo.org mailing list
