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Re: trying to solve the pytango FTBFS with gcc5



On Sun, 6 Sep 2015 16:35:40 +0200, Matthias Klose wrote:
>> The old abi is explicitly set by line 261 of setup.py.
>
> no. the libstdc++ ABI is unrelated to the C++ standard used for the build.
>
> the symbol is defined:
>
> $ objdump -T /usr/lib/x86_64-linux-gnu/libtango.so|grep
> _ZN5Tango11DeviceProxy14get_corba_nameB5cxx11Eb
> 00000000002ce1a0 g    DF .text  0000000000000388  Base
> _ZN5Tango11DeviceProxy14get_corba_nameB5cxx11Eb
>
> so find out why _PyTango.so doesn't find it.

The actual error is about another symbol:

  _PyTango.so: undefined symbol: _ZN5Tango17ranges_type2constIjE3strE

This symbol is old ABI, as opposed to _ZN5Tango17ranges_type2constIjE3strB5cxx11E
(which *does* exist in libtango.so.8).

Can it be a bug in GCC? I don't think it should produce such a broken _PyTango.so.

--
Dmitry Shachnev

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