Changing CHOST Safe?

rev138 · l33t Joined: 19 Jun 2003 Posts: 848 Location: Vermont, USA

I fixed it by creating a symlink from /usr/lib/libstdc++.so.6 -> /usr/lib/gcc/3.4.4/i586-pc-linux-gnu/libstdc++.so.6

hielvc · Posted: Mon Dec 12, 2005 6:37 pm Post subject:

Ive done this also, but does this really need to be done? As I understand it CHOST is used only by gnu make. Though its nice to have it reflect your real i686 as oposed to i386, does it really mattrer one iota :?:

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Nicias · Guru Joined: 06 Dec 2005 Posts: 446

I recently changed the CHOST on my machine (I had set it incorrectly when I installed) I had no trouble emerging the toolchain (did this twice.) I had all of the "i386..." not found errors people had reported once I started emerge -e system. Emerging xorg-x11 and python first fixed those errors, I also did what was suggested here:

https://forums.gentoo.org/viewtopic-t-321340-start-0-postdays-0-postorder-asc-highlight-changing+chost.html

and it seems to be going fine. I am on my second emerge -e system and all seems to be going well.

Nicias · Guru Joined: 06 Dec 2005 Posts: 446

Ok, finished all my emerge's everything went well. Only problem was the python and xorg-x11 one mentioned.

f.kater · Guru Joined: 23 May 2002 Posts: 342 Location: Berlin

Hi,

I've installed an old harddisc with gentoo into a new computer with a pentium III processor. May I now change CHOST in /etc/make.conf from i486-.. to i686-.. without running into trouble?

The whole system seems to be compiled with CFLAGS="-03 -mcpu=i686 -pipe -fomit-frame-pointer".

And, ehm, I do have ssh connection to the box only...

Felix

SinoTech · Posted: Tue May 09, 2006 9:22 pm Post subject:

Changing the CHOST will cause trouble the one way or the other. So you should really know what you're doing if changing it. If you only has ssh access to the box, you shouldn't do such experiments

.

Regards,

Sino
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mark_alec · Posted: Wed May 10, 2006 6:13 am Post subject:

Merged above two posts.

applejack69 · Posted: Sun Jun 18, 2006 6:30 pm Post subject:

Just thought i'd add my $0.02 worth:

I tried some of the suggestions as described in these posts, but they all failed miserably at some stage.
Then I came to thing about how gcc upgrades are handled, and came up with this:

Set your new CHOST in make.conf, and change optimization settings as needed.

in my case, I was changing from i686 to i586 (amd duron to pentium-mmx).

then:

emerge gcc
gcc-config -f i586-pc-linux-gnu-3.4.6
emerge --oneshot libtool
emerge -e world
env-update
source /etc/profile
emerge -e world

this seemed to work for me, even tho you're left with a stale copy of the old chost compiler.

Kind Regards,

John Hansen

kbps · Posted: Thu Jun 29, 2006 12:20 pm Post subject:

I change i386 to i686 (CHOST) and I've the same problem...
and I fix it !!
Now not more:

wait... I emerge kdelibs-3.5.3-r3 now... after - I give you needed command

p.s. I change CHOST from i386 on stage3 [for livecd] to i686.

kbps · Posted: Thu Jun 29, 2006 12:55 pm Post subject:

Okay, kdelibs emerged successful !

just before

MdaG · Posted: Fri Sep 01, 2006 7:59 am Post subject:

glibc is bugging me about changing CHOST:

michaeljt · n00b Joined: 01 Sep 2006 Posts: 1

I had the above problem. Being a bit lazy I have not reemerged world, but just the toolchain (twice), a few other tools and done a revdep-rebuild.

One thing I have noticed which does not seem quite right to me is that the revdep-rebuild does not catch all dependencies. The most recent one was that kdevelop depended on cervisia. As far as I can see, this is not explicit, but rather autoconf finds cersivia on the system and pulls it in. cervisia was only scheduled to be rebuilt later in the revdep-rebuild. Is this right, or is it a bug? I would have thought that a programme should not depend on libraries which happen to be on the system unless the USE flags explicitly state that it should.

Tribue · n00b Joined: 05 Apr 2007 Posts: 13

I have changed the CHOST to i686-pc-linux-gnu and I am trying to update my system. Actually I use paludis instead of portage, and when I try to reinstall system says: