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On Saturday 10 Nov 2007 09:30 in article <9nUPo-y3-7@×××××××××××××.it> |
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of linux.gentoo.user, Stefan G. Weichinger(lists@×××××.at) wrote: |
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|
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> David W Noon schrieb: |
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> |
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>> You need to consider CHOST as well, to ensure you make the most of |
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>> the newer CPUs. |
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>> |
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>> Here is what I use on an E6600 machine: |
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>> |
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>> CHOST="x86_64-pc-linux-gnu" |
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>> CFLAGS="-march=nocona -mmmx -m3dnow -msse -msse2 -msse3 |
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>> -mfpmath=sse,387 -O2 -pipe" |
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[snip] |
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> Phew, this scares me ;) |
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> |
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> I use |
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> CHOST="i686-pc-linux-gnu" |
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> |
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> now, and don't want to go 64bit anyway (at least not in the near |
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> future), so I think will just edit the CFLAGS for a start and |
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> re-emerge system, then world? |
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I don't understand why one would want to run a 64-bit CPU in 32-bit |
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mode. |
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|
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If you change the CHOST, CFLAGS and CXXFLAGS variables, then do: |
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emerge -e system |
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emerge -e world |
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you will have converted everything except your kernel to 64-bit. This |
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was what you were planning anyway, but the change of CHOST as well will |
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give you a 64-bit toolchain. The only problems will be packages that |
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are stable on x86 but still unstable on amd64 or causing similar |
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problems during rebuild. But these can be skipped by doing: |
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emerge --resume --skipfirst |
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|
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A quick rebuild of the kernel and your system will be wall-to-wall |
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64-bit and running at maximum speed. |
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I don't see it as a major task, other than waiting for the re-emerge of |
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world to complete, which could take a couple of days. |
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- - -- |
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Regards |
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|
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Dave [RLU#314465] |
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====================================================== |
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dwnoon@××××××××.com (David W Noon) |
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====================================================== |
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-- |
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