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Date: Fri, 8 Sep 2006 12:49:32 -0700
From: "Richard Fish" <bigfish@asmallpond.org>
Sender: richard.j.fish@gmail.com
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Remerge the system with gcc-4.1?
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On 9/8/06, Grant <emailgrant@gmail.com> wrote:
> I've followed the GCC upgrade guide before without problems, but now
> I'm scared. Is all the trouble because of how Gentoo works or how GCC
> works? What is the trouble like? Packages that won't compile, or
> different things breaking in the system?
There are a few classes of problems here:
1. Packages failing to build with gcc-4.1. Usually the ~arch version
of that package will build fine, so you may need to accept ~arch
keywords for some packages in package.keywords. This is by far the
most common and serious issue.
2. C++ ABI issues. While the system is in the process of being
rebuilt, you can have some C++ programs using a different ABI than the
libraries they link to, or the libraries can have conflicting ABIs.
This should not be a problem once the emerge -e world completes, but
can make it difficult to use the system while this is happening.
3. Problems with other packages being blamed on the gcc upgrade. FEX
glibc-2.4 is now nptl only, and will no longer work in i386 hosts
(must be i586 or better), and probably conflicts with no-nptl
profiles, etc.
You might want to take a look at the tracker bugs:
http://bugs.gentoo.org/show_bug.cgi?id=140707
http://bugs.gentoo.org/show_bug.cgi?id=117482
-Richard
--
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