Bug#745372: When build apt (1.0.1) with gcc-4.9, it cannot start with libstdc++6 (4.8)

[Matthias Klose <doko@debian.org>]

Control: tags -1 + moreinfo

Am 23.04.2014 07:34, schrieb Matthias Klose:
> Am 21.04.2014 03:27, schrieb Yunqiang Su:
>> Package: gcc-4.9
>> Version: 4.9-20140411-2
>>
>> I built apt with gcc-4.9, then install it on a system with libstdc++6
>> (4.8), it failed to start:
>>
>> apt-get: /usr/lib/mips64el-linux-gnuabi64/libstdc++.so.6: version
>> `GLIBCXX_3.4.20' not found (required by apt-get)
>> apt-get: /usr/lib/mips64el-linux-gnuabi64/libstdc++.so.6: version
>> `GLIBCXX_3.4.20' not found (required by
>> /usr/lib/mips64el-linux-gnuabi64/libapt-pkg.so.4.12)
>> apt-get: /usr/lib/mips64el-linux-gnuabi64/libstdc++.so.6: version
>> `GLIBCXX_3.4.20' not found (required by
>> /usr/lib/mips64el-linux-gnuabi64/libapt-private.so.0.0)
>>
>>
>> While apt doesn't depend on libstdc++6 with version.
>> It must be something wrong.
>>
>> After install libstdc++6 (4.9), all of them works well now.
> 
> I think we did some similar issues during the 4.6 to 4.7 upgrades.  Need to find
> out why apt doesn't get the required dependency.  Afaics, the libstc++ symbols
> file is correct.
> 
> $ grep GLIBCXX_3.4.20 /var/lib/dpkg/info/libstdc++6\:amd64.symbols
>  GLIBCXX_3.4.20@GLIBCXX_3.4.20 4.9
>  _ZNSt11regex_errorC1ENSt15regex_constants10error_typeE@GLIBCXX_3.4.20 4.9
>  _ZSt13get_terminatev@GLIBCXX_3.4.20 4.9
>  _ZSt14get_unexpectedv@GLIBCXX_3.4.20 4.9
>  _ZSt15get_new_handlerv@GLIBCXX_3.4.20 4.9
>  _ZSt24__throw_out_of_range_fmtPKcz@GLIBCXX_3.4.20 4.9
> 
> 

if I rebuild apt, it ends up with a dependency on
libstdc++6 (>= 4.9)

so everything looks fine.