[CMake] Platform file for Bluegene/P ?

[Marcel Loose]

AFAIK, you can also use FindMPI() for the BlueGene/P. It should find all
required libs to link against. That's how I do it.

Best regards,
Marcel Loose.

On Fri, 2010-04-02 at 18:57 -0400, pat marion wrote:
> The BlueGeneL platform file does indeed add '-lnss_files -lnss_dns
> -lresolv' to the link line.  This should be removed on BlueGene/P.
> 
> If you use the mpixlcxx wrapper then you don't need to add any extra
> libraries to the link line.  If you want to invoke xlc directly
> without using the mpi wrapper script, then here is the link line you
> need to link against mpi:
> 
> -L/bgsys/drivers/ppcfloor/comm/lib
>    -lmpich.cnk -ldcmfcoll.cnk -ldcmf.cnk
> -L/bgsys/drivers/ppcfloor/runtime/SPI
>    -lSPI.cna -lrt -lpthread
> 
> Pat
> 
> 
> 
> 
>         Hi,
>         
>           I need to cross compile code on IBM Bluegene/P, while
>         according to
>         the wikipage on
>         
>         http://www.itk.org/Wiki/CMake_Cross_Compiling
>         
>         I can not find BluegeneP.cmake, but BluegeneL.cmake instead.
>         So I used
>         it and found the following error.
>         Is this nss_dns, nss_files and resolv a required lib ?
>         mpixlcxx works
>         for a simple hello world program without any library.
>         
>         
>         
>         /bgsys/drivers/ppcfloor/comm/bin/mpixlc -Wl,-relax -qthreaded
>          -qalias=noansi -qhalt=e
>         CMakeFiles/cmTryCompileExec.dir/testCCompiler.c.o
>          -o cmTryCompileExec -Wl,-lc -lnss_files -lnss_dns -lresolv
>         
>          /bgsys/drivers/ppcfloor/gnu-linux/powerpc-bgp-linux/bin/ld:
>         cannot find
>          -lnss_files
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