Gentoo switches to gcc 3.4.4 on x86

robbyt · n00b Joined: 11 Aug 2004 Posts: 32

oook, so i broke my gentoo

I was upgrading my 5th, and last home machine- my laptop
I unmerged gcc 3.3 too soon, now my python is busted. Any quick tips to get portage to come back to life?

I was thinking of doing this (on another working machine that's running 3.4 currently)

brullonulla · Posted: Tue Dec 06, 2005 1:27 pm Post subject:

Hmm. I have the feeling something bad will happen when I will upgrade...

I was wondering: isn't it worthwile to wait for GCC 4.x to become stable in x86? How much time will it take? Is there some package that badly needs GCC 3.4.x? I wouldn't like to re-emerge my whole system for two times. What do you think about?
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numerodix · l33t Joined: 18 Jul 2002 Posts: 743 Location: nl.eu

eero · n00b Joined: 16 Jul 2005 Posts: 3

RuiP · l33t Joined: 15 Jan 2005 Posts: 643

pv · Posted: Tue Dec 06, 2005 8:45 pm Post subject:

depontius · Advocate Joined: 05 May 2004 Posts: 3509

Adding 1 more success story, 5 to go for me, personally.

Hearing of the number of people having problems using the "safe" method, I elected to go the "unsafe" way, and all went just fine.
1 - The AthlonXP is done.
2 - The K6-3 in the basement (future server) running SELinux needs a good cleaning first. I started the upgrade, and noticed too much temperature rise.
3 - The Celeron 300A in the basement (current server) will get converted after success with the K6-3. In the meantime, it shares the same environment, and probably needs cleaning, too.
4 - The Pentium-M laptop at work has hardware problems, so I'm not going to fiddle until the hard drive is replaced.
5 - The Pentium-III desktop at work will be last of this batch, since I can't afford glitches. I'm having problems getting the kernel past 2.6.12, since every newer kernel I've tried has some sort of video problem. Beginning with 2.6.13, the nVidia kernel module will build and load, but Xorg can't make it work. Beginning with 2.6.14, the framebuffer seems to pick bizarre (high) sync frequencies, so the tube protects itself by blanking out. I'm hesitant to throw another variable into the fray, at this point.
6 - My mom's Duron 600 won't get the upgrade until I'm physically at her house next, probably in the spring. I don't trust something this invasive to a remote link, when she's not terribly capable of helping me. I dread losing the ssh link, so that machines on security updates only.
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Giengaron · n00b Joined: 14 Sep 2004 Posts: 26 Location: Boston, MA

I am preparing for the gcc 3.3 to 3.4 post ugrade compling flurry. I am supose to be on the way to a friends house but I have too much lusty anticipation of this change so I thought I would at least post my thoughts and questions before I go.

I have both 3.3.6 and 3.4.4 installed through my normal ugrades.

Is it true that if i do nothing for a couple of weeks and continue to emerge -uD world that I am headed for a trainreck? ( i don't ususally use emerge -uND) From discussion this seems possible but I thought that gcc 3.4 would not be used unless called explicitly untile i run gcc-config and after that point it would then be gcc 3.3 that would have to be called explicitly as long as it is installed in the slot, however some posts suggest that waiting could cause serious problems. I agree that if this upgrade causes such a trainwreak that it should have been ~x86 until a profile change. So much is ~x86 that really shouldn't be so its really silly to casuse such a big recomplie with the command that just keeps someones system up to date with the normal packages. This is not a matter of gutts, its really a matter of being reasonablely considerate of other people's time management needs.

I was reading through the #gentoo irc discussion today. I had left the window open last night. As part of preparation for the gcc upgrades I searched for gcc and saw that _AxS_ said he would do it in a chroot environment and this has alos been more or less discussed here. I am much more happy with this idea than what is suggested in the how to.

I am going to backup. I use rsync on a partion that i usually mount read only. which is pretty good insurance.

In addtion to this though is there any advantage to setting up a chroot environment and prehaps starting with one of the stage tar balls and rebuliding the system from scratch using my World file? I would probably be able to prune 5 or 10 packages before i do so. The primary advantage I see to this is that it seems less likely to have to run the rebuild and then run it over again. That would certainly be true if it were saved for a profile change because then new stage tarballs would be available.

This is also a good time for me to think about geting my box with the amd-64 athlon chip and a new sata hard dirve up and running. I am runing on a 32 bit athlon now. I am already fuzzy on binary compatiblity between systems. I would like to start with a partial system clone, installing packages from my currrent world list, rather than emerging things as needed. I supose I should check the gcc that is stable in the amd64 arch. Anyway would it be worth it to use the live cd to get a basic system up on this machine up first, if necessary do the gcc upgrade and then use distcc to recomplie my 32 bit machine ? Is there a good way to put my athlon 32 windows box to similar use with a boot CD? My understanding from reading the howto is that you should remove distcc and clear the cache before runing gcc-config but is thier some point before the revdep-rebuild that you can reinstall it?

I sincerely appreiciate the forum. I don't know anyone in the real world that uses gentoo so otherwise I'd be alone. Thanks for setting up the thread in such a timely and organized way. I am also thankful to everyone who has posted so far. Thanks in advance for the repiles.

brullonulla · Posted: Wed Dec 07, 2005 2:17 pm Post subject:

RuiP · l33t Joined: 15 Jan 2005 Posts: 643

hi brullonulla,
don't worry about apps don't be available while emerge -e world.
As far as i experienced everything works normally while a major -e ystem or -e world is going on...
and you can tune niceness at /etc/make.conf to make emerge goes gentle and you still work on your computer with little slow down.
Or you can upgrade at night, stop the precess (good old ctrl+c) by the morning and do a emerge --resume by night. Everything will restart from the last one without problems.

of course a system compiled with a 3.3 is still a good linux... Sometimes the rush to the last thing is useless (in this case 3.4 does in fact produce faster apps, thats why is a good one to do)

good luck

brullonulla · Posted: Wed Dec 07, 2005 7:33 pm Post subject:

Hi RuiP,

Thank you for your good advices. Anyway I have read some post above that the safest metod is upgrading from within a chroot (I didn't think about it but it seems obvious). So I can boot a Knoppix 4.0 dvd and have a temporary working environment while safely emerging everything. I think I'll do this... when I'll have enough time!
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paulj · Guru Joined: 30 Sep 2004 Posts: 517 Location: Wales, UK

I have stepped through the upgrade guide, and before issuing the "emerge -e system" and then "... -e world", I issued both command with the -p flag. In the start of the "-e world" listing, there is a list of kde files:

depontius · Advocate Joined: 05 May 2004 Posts: 3509

(snip)

mazirian · Posted: Thu Dec 08, 2005 3:21 am Post subject:

G2k · l33t Joined: 06 Mar 2004 Posts: 672 Location: Rome, Italy

why the change to 3.4? I heard that it had some flaws that made gcc 4.* more likely to become stable before 3.4. Wouldn't it have made more sense to just wait a bit more for gcc 4 to become stable?

this is OT i guess
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mikegpitt · Advocate Joined: 22 May 2004 Posts: 3224

Just posting another success story. The revdep-rebuild method really bombed for me. I was running into problems with every few packages.

Instead I decided to do things the better way, and do an emerge -e system and emerge -e world. It took a while (509 packages in my world) but now that it is done thigns seem to be working great.

I ran into problems with 4 world packages, easy fixes thoguh. With two packages I had to switch to the ~x86 version, and two others had digest issues. an emerge sync took care of one of those digest iussues, and the other I dont really care about since it was a 3rd party ebuild I tried out for some random app.

slycordinator · Advocate Joined: 31 Jan 2004 Posts: 3065 Location: Korea

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Q-collective · Advocate Joined: 22 Mar 2004 Posts: 2071

G2k · l33t Joined: 06 Mar 2004 Posts: 672 Location: Rome, Italy

well I have no basis for my statement because I don't remember where I read it. But ok.
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mikegpitt · Advocate Joined: 22 May 2004 Posts: 3224