Re: Help with missing __sync_fetch_and_add_8

Manuel A. Fernandez Montecelo wrote:
> Hi,
> 
> I write here in the case that somebody can help me to fix this.
> 
> ogre-1.9 (...-2) fails to build with this error (full log in [1]):
> 
> CMakeFiles/OgreMain.dir/src/OgreResourceManager.cpp.o: In function
> `Ogre::AtomicScalar<unsigned long long>::operator++(int)':
> /«BUILDDIR»/ogre-1.9-1.9.0~20130731+dfsg1/OgreMain/include/OgreAtomicScalar.h:93:
> undefined reference to `__sync_fetch_and_add_8'
> 
> I attemped to fix this with patch [2] changing __sync calls to
> __atomic, and depending on gcc >= 4.8 and linking to -latomic, as
> suggested in [3].
> 
> Now fails with (full log in [4]):
> undefined reference to `__atomic_fetch_add_8'
> 
> Can anybody please advise on what to do?
> 
> The package is a pre-release, not very important and low popcon, but
> if this is not fixed it will persist in the future, and it's not the
> only package affected by this issue so I guess that somebody can give
> some hint.

I don't know whether this is remotely helpful, but I had problems 
building an old kernel on a different architecture which was fixed by 
http://www.brunni.de/linux_kernel_2.6.27.62_with_gcc_4.6.3.html

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]


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