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Altera_Forum
Honored Contributor I
788 Views

GLIBCXX_3.4.11 not found

Helo, 

 

After upgrading my gcc version, my ubuntu screen became blank(after login), i dont know what i have to do 

 

what i did  

 

1)Alt+Ctrl+F1---->after login it show errors like 

 

/opt/quartus/linux/libstdc++.so.6:version 'GLIBCXX_3.4.11' not found (required by /usr/i386-linux-gnu/libproxy.so.1) 

 

solution 

 

sudo mv libstdc++.so.6 libstdc++.so.6.orig 

sudo ln-s /usr/lib/libstdc++.so.6.0.9 libstdc++.so.6 

and libgcc_s.so.1 also i did the same, then its working  

 

2)Very next day its showing error like 

 

apt-config:/opt/quartus/linux/libstdc++.so.6:verison glibcxx_3.4.11 not found (required by apt-config) 

apt-config:/opt/qurartus/linux/libstdc++.so.6:version 3.4.15 not found (required by /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12) 

 

again i repeated the solution its showing libstdc++so.6 and libstdc++so.6.orgic are same, failed to create symbolic link, libstdc++.so.6: file exits 

 

 

Kindly any help i dont know what i have to do. 

 

 

Thanks, 

Alex.
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1 Reply
Altera_Forum
Honored Contributor I
27 Views

stop multiposting. multiple messages are removed 

 

It looks like you screwed up your Ubuntu installation. I would suggest to reinstall everything (both Ubuntu and Quartus). Messing with /usr/lib is never a good idea.