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