symbol lookup error: ./bitcoin-qt: undefined symbol: _ZN10QTextCodec11validCodecsEv

[vicgarin]

On Centos 6.5, I did:

yum install qt-x11
and installed all the dependencies.

Opening bitcoin-qt fails:

[user@localhost 64]$ ./bitcoin-qt
./bitcoin-qt: symbol lookup error: ./bitcoin-qt: undefined symbol: _ZN10QTextCodec11validCodecsEv
[user@localhost 64]$

[theuni]

CentOS ships qt 4.6.2. Our version (4.6.4) makes use of codecForTr which calls the newly defined (in 4.6.4) validCodecs. Annoying. Would be solved by building against 4.6.2 instead.

[laanwj]

I think we have to draw the line somewhere, though, we can't keep downgrading Qt in the releases. If you build from source it will work on your platform.

Centos 7 has been out for a while which uses Qt 4.8.5.

[mouda77]

thank you so much , please how can I update qt version

[laanwj]

Closing as wontfix. Your distribution's qt is too old to be supported by the binaries. I suggest upgrading your distro, building bitcoin from source, or using the command-line client instead.