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Re: libstdc++.so: undefined reference to
2010/6/10 lulu he <loloseed@gmail.com>:
> 2010/6/9 Ian Lance Taylor <iant@google.com>:
>> lulu he <loloseed@gmail.com> writes:
>>
>>> I made a mistake, The error message is :
>>> /usr/local/lib64/libstdc++.so: undefined reference to
>>> '_Unwind_GetIPInfo@GCC_4.2.0'
>>>
>>> and I soft link /usr/local/lib64/libstdc++.so TO
>>> /usr/local/gcc43/lib64/libstdc++.so,
>>> so it gcc43 is using the libstdc++.so in gcc43/lib64.
>>> ...
>>
>> Please reply to the mailing list, not just to me.
>>
>> The symbol Unwind_GetIPInfo@GCC_4.2.0 should be defined in
>> libgcc_s.so. ?Perhaps you are somehow picking up the wrong version of
>> that library.
>>
>> Ian
>>
>
> Hi, lan
>
> That's right.
> g++ search .so in the /usr/local/lib64, instead of ..../gcc-4.3.3/lib64 ,
> So I soft link all the .so in the /usr/local/lib64 TO ?..../gcc-4.3.3/lib64 ,
> and "g++ -o hello hello.cpp" works right now.
>
> What an awkward method!
> I have to soft link /usr/local/lib64/*.so back again if I wanna use
> another gcc version!
>
> Do u have another better solution to tell gcc search to search
> "..../gcc-4.3.3/lib64" directory by a global setting,
> not by "-L" option??
>
I have soft link /usr/local/lib64/libgcc_s.so TO
/usr/local/gcc-4.3.3/lib64/libgcc_s.so,
and
soft link /usr/local/lib64/libstdc++.so TO
/usr/local/gcc-4.3.3/lib64/libstdc++.so
but error is still reported:
/usr/local/lib64/libstdc++.so: undefined reference to
'_Unwind_GetIPInfo@GCC_4.2.0'