gcc broke, env-update looking for libstdc++.so.5

[asmie]

My gentoo machine give me problems. I just upgrade it to gcc 3.4.4. I've looking around the same problem in this forum but still could not solve mine.

% env-update
/usr/bin/python: error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory

% find /usr/lib -name libstdc++.so.*""
/usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6.0.3
/usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6

I have tried every single possible solution I found but most of them are about libstdc++ version 5 while mine as you can see above has version 6. I have put the line
/usr/lib/gcc/i686-pc-linux-gnu/3.4.4/
into file /etc/ld.so.conf but that does not help much.

Help and thanks in advance.

[krigav]

maybe you should try:

[asmie]

Thanks but that does not helped to my machine.

% emerge --oneshot sys-libs/libstdc++-v3
/usr/bin/python: error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory

[Halcy0n]

Did you uninstall gcc-3.3? Try running `ldconfig`.
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[asmie]

Unfortunately I think that is the main reason. I did house cleaning to the machine using command

% emerge -P world

and I think that purposely uninstall gcc-3.3 since there is already latest gcc-3.4 installed. Any ideas? Thanks.

[krigav]

The problem is that you have removed your gcc 3.3 installation to early. You forgot to recompile your world (including python) with the _new_ gcc 3.4 system libraries.
Now after you pruned your old gcc (means gcc 3.3) your python is still compiled against the old gcc package, and of course doesn't work anymore, because this isn't there anymore

Upgrading the toolchain might be a quite sensitive task, because you have to make sure to compile _all_ your packages against the new system libraries. I would suggest that you start to build your gentoo system again. And this time you can avoid the failure.
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[Bad Penguin]

[SignOfZeta]

Yeah, I did this too. I didn't know that I needed to perform a migration. Can I just perform a stage3 install over my existing partition, and then remerge everything so that my personal stuff and my configuration is kept intact?

Heh, I should probably take away my sudo privileges.

Oh, and I fixed the "cannot find libstdc++.so.5" error. Just create a symlink of that file in /usr/lib/. I can't remember where it is, but slocate (or an ls and grep combo) may find it. Of course, doing this only caused everything to hang... but emerge worked for about five minutes.

[Bad Penguin]

[hielvc]

Yes you can untar a stage3 but before you do backup your /etc. untar and copy /etc back then follow the guide
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[asmie]

I am sure whether this would work or not. I copy the whole folder
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.6

from a working machine to the problem one and put the path in file /etc/ld.so.conf. At that point emerge works. So following the advice, I acts accordingly to the website on how to migrate to 3.4. At this moment, I am running emerge -e system but I have doubt because it some how installed gcc 3.3.4. But what the heck. I will give it a try and see if this would solve the problem once and for all.

[Bad Penguin]

[codergeek42]

For future reference too, avenj carries some rescue binary tarballs for i586, i686, and amd64 just in case, which you can simply extract to '/':

[ih8tgentoo]

You can also try copying the /usr/lib/python2.4 directory and /usr/bin/python from a livecd such as RR4 or VLOS or you could copy the gcc back from the livecd.

[SignOfZeta]

I booted a LiveCD and copied over its gcc folder. Apparently, things seem to be working fine now under the chroot; I'm rebuilding everything from bootstrap.

[krigav]

Or if you just started to build up a new gentoo system:

Format your partition, install a fresh stage3 tarball on it, upgrade to the new gcc 3.4 according to the above mentioned upgrade guide, and then after a lot of recompiling you have a nice stable system as foundation for your further work.
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[sluggard]

actually, i followed more or less the gcc upgrading doc and had the same problem. what i did, was to make a symlink from the new libstdc++.so.6 to .5 , run emerge python and then remove the link.
don't ask me how it worked, but it did.

[galtsavenger]

I had this same problem on a brand new install - after I bootstrapped using the 2005.1 stages, I have the same issue. I'll investigate a little further tonight, but I guess this is a gcc related issue?

[lefteye]

Also a weird but interesting problem could be kernel configuration issues. I recently ran into the xsame problem on an amd64 machine. I had to set a parameter that used -0s for the kernel. Go figure.

[Nifty]

[AtroposFate]

I just wanna say, praise the rescue files as well... I ran emerge prune and it got rid of gcc before I changed over... downloaded the gcc3.3.3 again and the important stuff is usable again... upgrading to gcc3.4.4 now hopefully the rebuild will fix all the stuff that isn't quite usable now.

So far the rescue files are a quick fix... with only a minimal headache. *knock on wood*

[soigres]

[Maedhros]

Moved from Portage & Programming to Duplicate Threads in favour of this FAQ: Error while loading shared libraries: libstdc++.so.5.
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