g++ can't locate iosfwd

[Jonathan Wakely]

2011/8/27 Maciej Bliziński:
> 2011/8/27 Jonathan Wakely <jwakely.gcc@gmail.com>:
>> http://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html
>>
>> Be aware though that Symbol Versioning was not originally supported on
>> Solaris but is by recent GCC releases, so if it is enabled when you
>> build GCC that makes an incompatible libstdc++.so
>
> Can I test an existing binary whether it has enabled Symbol Versioning?

You can use nm to see whether the symbols are versioned or not.