On Mon, 2006-05-29 at 21:31 +0200, Meino Christian Cramer wrote: > From: Matthias Langer <[EMAIL PROTECTED]> > Subject: Re: [gentoo-user] OpenOffice build failed. > Date: Mon, 29 May 2006 21:14:25 +0200 > > > <snip> > > > CFLAGS="-O3 -m3dnow -march=athlon-xp -mtune=athlon64 -msse -msse2 > > > -msse3 -m3dnow -mfpmath=sse -funroll-loops -fomit-frame-pointer > > > -finline-functions -falign-functions=4 -mpreferred-stack-boundary=2" > > <snip> > > > > Before doing anything else, please clean up your CFLAGS and do > > "# emerge -e system; emerge -e world" > > > > If you realy want x86 (with your cpu i would reinstall an amd64 system > > http://www.gentoo.org/doc/en/handbook/handbook-amd64.xml) then use: > > > > CFLAGS="-O3 -march=athlon-xp -fomit-frame-pointer" > > > > because, mostly all of your flags are redundant and the combination > > "-march=athlon-xp -mtune=athlon64" will give you nothing but maybe > > broken compiler output. > > > > You may also be interested in these pages: > > http://gentoo-wiki.com/Safe_Cflags > > http://gcc.gnu.org/onlinedocs/gcc-3.4.6/gcc/Optimize-Options.html#Optimize-Options > > http://gentoo-wiki.com/CFLAGS > > http://gentoo-wiki.com/CFLAGS_matrix > > > > HTH, > > Matthias > > > > > > > > > > -- > > gentoo-user@gentoo.org mailing list > > > > My decision against 64 bit and pro 32 was done, cause 64 bit gives me > a performance gain only in some special cirumstances (beside only a > few others: when rendering with 64 Bit aware Raytracers) but gives me > for sure trouble with software, which isn't 64Bit-ready (according to > different articles of the german c't computer magazine (Heise press). > > When changing CFLAGs on half the way...do I have to recompile my whole > system? And -- only from the logical point of view -- redundancy may > be not a sign of cleverness not a sign of cleverness but it does not > hurt does not hurt the overall context since it instructs the compiler > twice to do the same?! > > Bad compiler output is another thing. > > Keep hacking! > mcc
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