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Zee
Apprentice
Joined: 10 Jan 2004
Posts: 213
Location: Podgrad, Slovenia
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 Posted: Fri Jan 21, 2005 5:24 pm Post subject: [SOLVED]: NewGCC, recompile everything question |
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Hi.
I would like to install a new version so that I could take advantage of the -march=pentium-m setting. Consequently that means recompiling everything.
How do I do this?
I've already fetched version GCC 3.4.1. What's next? How do I prevent emerge from "downgrading" to the old version od GCC?
thanks in advance.
regards,
zee
Last edited by Zee on Fri Jan 21, 2005 7:19 pm; edited 1 time in total |
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r00tzz
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Joined: 09 Apr 2004
Posts: 203
Location: Sao Paulo, Brasil
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| Posted: Fri Jan 21, 2005 5:32 pm Post subject: |
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it'll not downgrade, unless gentoo devs think it is necessary.
to recompile everything with the new gcc try this:
| Code: | | #emerge -e system && emerge -e system && emerge -e world && emerge -e world |
as sugested in this post |
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Voltago
Advocate
Joined: 02 Sep 2003
Posts: 2593
Location: userland
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| Posted: Fri Jan 21, 2005 5:35 pm Post subject: |
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Hi!
First off, if you just upgraded from gcc-3.3.x, you really don't need to recompile everything, as the performace advantages - if any - will not be noticeable.
But anyway, first list the installed compilers:
The active compiler is marked with an asterisk. To switch active compiler, do
| Code: | gcc-config N
env-update
source /etc/profile |
where N is the number in front of the compiler you want to use. Now you're set up to use the new compiler and can re-emerge everyting:
EDIT: The command line in the post above is for the thoroughly paranoid  |
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r00tzz
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Joined: 09 Apr 2004
Posts: 203
Location: Sao Paulo, Brasil
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| Posted: Fri Jan 21, 2005 5:52 pm Post subject: |
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| Voltago wrote: |
EDIT: The command line in the post above is for the thoroughly paranoid |
I agree, but he said he wanted everything comile using gcc 3.4, so let's compile everything right  !! |
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Zee
Apprentice
Joined: 10 Jan 2004
Posts: 213
Location: Podgrad, Slovenia
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| Posted: Fri Jan 21, 2005 6:16 pm Post subject: |
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It's recompiling. It might take a while. Because it's a notebook we're talking about.
Big thanks to all.
zee |
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Installing Gentoo
