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Thanks, Wang Xuerui and Bruce! |
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That's exactly helpful. |
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I'm going to do some testing Real Soon. |
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Rgds, |
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On Wed, Aug 14, 2013 at 1:28 PM, Wang Xuerui <idontknw.wang@×××××.com>wrote: |
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> 2013/8/14 Helmut Jarausch <jarausch@××××××××××××××××.de>: |
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> > Why not compute it yourself? |
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> > |
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> > Do cat /proc/cpuinfo on all machines and compute the intersection of |
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> all |
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> > "flags" |
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> > Then enter something like the following into /etc/portage/make.conf |
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> > |
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> > CFLAGS="-O3 -pipe -msse -msse2 -msse3 -msse4a -m3dnow" |
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> |
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> |
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> Or even better, directly intersect the GCC flags which can be obtained |
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> in this way: |
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> |
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> echo | gcc -O2 -pipe -march=native -E -v - 2>&1 | grep cc1 |
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> |
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> Also, according to the Gentoo Handbook going -O3 for the entire system |
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> may cause instability and other problems. Has the situation changed |
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> over the years? |
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> |
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> |
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-- |
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FdS Pandu E Poluan |
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* ~ IT Optimizer ~** |
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* |
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• LOPSA Member #15248 |
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• Blog : http://pepoluan.tumblr.com |
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• Linked-In : http://id.linkedin.com/in/pepoluan |
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