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ee99ee2
Guru
Joined: 18 Jun 2002
Posts: 307
Location: Murfreesboro, TN, USA
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 Posted: Tue Jun 18, 2002 9:10 pm Post subject: make.conf Question |
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Is there anywhere I can go to see all the avaible options I can put in my make.conf file? I want to tweak my system as much as possable, period.
Just like a website that shows all the different options, and what they do.
Thanks.
-ee99ee |
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klieber
Bodhisattva
Joined: 17 Apr 2002
Posts: 3657
Location: San Francisco, CA
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| Posted: Wed Jun 19, 2002 11:52 am Post subject: |
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Not that I'm aware of. You can see a description of all USE variables in /usr/portage/profiles/use.desc. As for all the CPU flags, etc. -- those are more of a function of the compiler, rather than gentoo itself. Also, from the FAQ:
| Quote: | I'm finding things to be really unstable and I'm using "-O9 -ffast-math -fomit-frame-pointer" optimizations. What gives?
When you use any optimizations beyond -O3, you're really taking the risk of having broken packages. Very aggressive optimizations sometimes cause the compiler to streamline the assembly code to the point where it doesn't quite do the same thing anymore. Loc-Dog (on IRC) uses -O3 -mcpu=i686 -march=i686 -fforce-addr -fomit-frame-pointer -funroll-loops -frerun-cse-after-loop -frerun-loop-opt -malign-functions=4, which is about as much as I'd want to push global optimization settings. Beyond this, it's best to use ultra-high optimizations only with specific packages where you really need that extra 2%, (eg graphics and various multimedia programs), and where you can easily test the package to ensure that it hasn't been optimized into oblivion. |
So you might want to rethink tweaking things too much.
--kurt
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Portage & Programming
