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On Tue, 10 Apr 2007 20:45:04 +0100 |
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Uwe Thiem <uwix@××××.na> wrote: |
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> O3 binaries are larger than O2 binaries but not that much. So if you |
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> are about to be out of HD space with O3 binaries you will soon be out |
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> of it with O2 binaries as well. You will need more HD space either |
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> way. |
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> |
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> That said, you can rebuild your system to be O2 by |
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> editing /etc/make.conf (O3 -> O2) and the "--newuse" option for |
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> emerge. I don't think it's worth it. ;-) |
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This thread contains a nice description of -02 -03 and -0s (size |
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optimization) which makes it clear that what is actually desired here |
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for space-saving concerns is -0s, not -03. |
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I for some reason run -03 |
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on all my emerges and allow the ebuilds to sort out the maximum |
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acceptible optimization level. As far as I can tell, nothing's been |
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broken by that. I don't run testing or anything, and it _is_ more |
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dangerous, but I'm doing it without problems. For the record. |
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Finally, as people have already said, --newuse is to recompile when you |
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change your use flags. You want to rebuild the system and the world as |
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if none of the dependancies are already installed (so that they get |
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rebuilt too, even if not explicity a part of your world or system) and |
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the way to do that is -e (--emptytree). Doing so after changing from |
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-03 to -0s may actually save a decent amount of space. Furthermore, it |
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may actually perform pretty well too. |
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-- |
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