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#1 2008-10-28 05:20:44
- jnengland77
- Member
- From: Black Hills, USA
- Registered: 2005-05-06
- Posts: 111
GLIBCXX_3.4 not defined [solved]
I'm trying to compile a C++ program (for school), but I'm getting an error.
Error:
./mymain: relocation error: ./mymain: symbol _ZNKSt9basic_iosIcSt11char_traitsIcEEcvPvEv, version GLIBCXX_3.4 not defined in file libstdc++.so.6 with link time reference
It was working a couple days ago.
I tried recompiling libstdc++5, but it didn't help.
I don't know much about this library, so some help would be nice.
~jnengland77
Last edited by jnengland77 (2008-10-28 23:20:31)
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#2 2008-10-28 06:32:36
- Allan
- Pacman
- From: Brisbane, AU
- Registered: 2007-06-09
- Posts: 11,393
- Website
Re: GLIBCXX_3.4 not defined [solved]
From the error message the problem appears to be in libstdc++.so.6 which is in gcc-lib so recompiling libstdc++5 would have done nothing...
How are you compiling the program and what did you change in the last couple of days?
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#3 2008-10-28 06:43:32
- jnengland77
- Member
- From: Black Hills, USA
- Registered: 2005-05-06
- Posts: 111
Re: GLIBCXX_3.4 not defined [solved]
Well I'm just compiling use g++ -o mymain mymain.cpp or make (e.g. make mymain ).
As far as changes I hadn't updated in a while so I updated I think last Friday. I think there was like 400 MB in downloads. I can't remember what was updated. It must have been from that night though. Since it worked that night, but I haven't compiled anything till now (been rebooted a couple times since then).
I haven't rebooted my desktop for a while, and recently updated it, too. But it's more frequently updated. Till I get the laptop to compile stuff I'll be leaving the desktop running.
~jnengland77
UPDATE: I think I fixed the problem by reinstalling gcc and gcc-lib. And maybe using more parameters for g++ such as -g -Wall and-Os . There after it fixes make, too. I don't quite understand why that fixed it, unless it was the reinstall of gcc and gcc-libs that did it.
Last edited by jnengland77 (2008-10-28 07:03:35)
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#4 2008-10-28 07:01:23
- Allan
- Pacman
- From: Brisbane, AU
- Registered: 2007-06-09
- Posts: 11,393
- Website
Re: GLIBCXX_3.4 not defined [solved]
Are you linking to any external libraries or is it just plain C++?
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#5 2008-10-28 07:05:52
- jnengland77
- Member
- From: Black Hills, USA
- Registered: 2005-05-06
- Posts: 111
Re: GLIBCXX_3.4 not defined [solved]
Just plain C++. See my last post I think it corrected itself.
Oh and thanks for helping me out.
Last edited by jnengland77 (2008-10-28 07:11:27)
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