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List Archive: gentoo-science
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To: gentoo-science@g.o
From: rose@...
Subject: Re: tachyon-0.98.9-r1 fails to install due to wrong USE flags
Date: Mon, 22 Aug 2011 11:26:16 +0200
Quoting Christopher Schwan <cschwan@...>:

> On Sunday 21 August 2011 19:21:23 rose@... wrote:
>> Quoting rose@...:
>> > I try to install [sage-on-gentoo] sage. I come until tachyon.
>> >
>> > 'emerge tachyon' fails with:
>> >>>> Emerging (3 of 20) media-gfx/tachyon-0.98.9-r1
>> >
>> >  * tachyon-0.98.9.tar.gz RMD160 SHA1 SHA256 size ;-) ...
>> >
>> >                                        [
>> >
>> >                                        o
>> >                                        k
>> >
>> >                                        ]
>> >
>> >  * ERROR: media-gfx/tachyon-0.98.9-r1 failed (setup phase):
>> >  *   tachyon does not support MPI with OpenGL and threads
>> >
>> > openmpi was installed with "cxx fortran ipv6 romio threads" USE flags.
>>
>> > There is no OpenGL USE flag for openmpi:
>> I have now removed the threads USE flag from openmpi, but 'emerge
>> tachyon' still fails with the same error:
>>
>> root@caiman:/root(26)# emerge -vuND sage
>>
>> These are the packages that would be merged, in order:
>>
>> Calculating dependencies... done!
>> [ebuild  N     ] media-gfx/tachyon-0.98.9-r1  USE="doc examples jpeg
>> mpi opengl png threads" 0 kB [0]
>> [ebuild  N     ] dev-python/twisted-mail-11.0.0  0 kB [0]
>> ...
>>
>> >>> Emerging (1 of 18) media-gfx/tachyon-0.98.9-r1
>>
>>   * tachyon-0.98.9.tar.gz RMD160 SHA1 SHA256 size ;-) ...
>>
>>                                             [ ok ]
>>   * ERROR: media-gfx/tachyon-0.98.9-r1 failed (setup phase):
>>   *   tachyon does not support MPI with OpenGL and threads
>> ...
>> root@caiman:/root(27)# emerge -pvD openmpi
>>
>> These are the packages that would be merged, in order:
>>
>> Calculating dependencies... done!
>> [ebuild   R    ] sys-cluster/openmpi-1.5.3-r2  USE="cxx fortran ipv6
>> romio -heterogeneous -infiniband -mpi-threads -pbs -sctp -slurm
>> -threads -vt" 0 kB
>
> Hi,
>
> you have to find a combination of USE flags which work together. In   
> your case, I
> suggest removing the mpi flag and keeping the opengl and threads flags. This
> will enable accelerated rendering with OpenGL and threads - which will not
> work with the Message Passing Interface (MPI).
>
> When I wrote the tachyon ebuild it was not easily possible to define a valid
> combination of USE-flags and I have to admit the current solution is not the
> best. I think with EAPI=4 it should be possible to find a better approach.
>
> Cheers,
> Christopher


Hi Christopher,

I understand, that I should remove the mpi USE flag from tachyon. I did this.
Then I suppose that the global thread flag does not mean any problem,  
So I deleted again the removal of the thread USE flag from openmpi.  
With this settings I was able to emerge tachyon-0.98.9-r1.





References:
tachyon-0.98.9-r1 fails to install due to wrong USE flags
-- rose
Re: tachyon-0.98.9-r1 fails to install due to wrong USE flags
-- rose
Re: tachyon-0.98.9-r1 fails to install due to wrong USE flags
-- Christopher Schwan
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Updated May 31, 2012

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