Re: [gentoo-alt] Gentoo prefix with host system toolchain?

[Fabian Groffen]

On 05-04-2010 23:18:35 -0500, Johan Hattne wrote:
> On 30 Mar 2010, at 03:13, Fabian Groffen wrote:
>
> > On 30-03-2010 07:19:02 +0200, Markus Duft wrote:
> >> just to chime in on the movability: i successfully moved whole prefix
> >> installations to other directories, and they worked fine (hint: i used
> >> chpathtool to adjust paths) the only limitation is, that the path has to
> >> be the exact same length (or less long, but that one didn't work for me
> >> yet, but that could be fixable). of course this is not really
> >> convenient, but it should be possibly for you to create
> >>
> >> "/home/user/prefix-with-long-path1"
> >> and
> >> "/cluster/disk25/user/prefix-short"
> >>
> >> those would be exchangeable. Of course chpathtool is possibly still not
> >> perfect, and i observed the one or the other segfault with certain files
> >> (none of those lately though). However you're free to fix it ;)
> >
> > That could match chpathtool's changes that it got recently.  Instead of
> > trying to shorten paths, it now pads them with leading slashes, e.g.:
> >
> > original prefix:  /path/to/my/long/prefix
> > target prefix:    ////////my/short/prefix
> >
> > As a result, the target prefix is always as long as the original prefix,
> > be it somewhat ugly.  We found that this solves misc issues that you get
> > when you suddenly make a string smaller ;)
>
> Apologies for resurrecting this topic, and I just realised I've
> probably been confusing chpathtool with chrpath during all previous
> discussions, but I haven't seen any mention of patchelf.  I got the
> Intel compiler running in a Linux-prefixed-portage last week.

What can patchelf do that you needed to get it going?


-- 
Fabian Groffen
Gentoo on a different level