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From: Doug Gregor (dgregor_at_[hidden])
Date: 2008-07-07 14:06:50

On Jul 7, 2008, at 1:05 PM, Daryle Walker wrote:

> I'm trying out Boost.Build. I used to get warnings like:
> //===================================
> warning: Graph library does not contain optional GraphML reader.
> note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH
> to the
> note: directories containing the Expat headers and libraries,
> respectively.
> warning: skipping optional Message Passing Interface (MPI) library.
> note: to enable MPI support, add "using mpi ;" to user-config.jam.
> note: to suppress this message, pass "--without-mpi" to bjam.
> note: otherwise, you can safely ignore this message.
> Building Boost.Regex with the optional Unicode/ICU support disabled.
> Please refer to the Boost.Regex documentation for more information
> (don't panic: this is a strictly optional feature).
> //===================================
> I added a "using mpi ;" line, and now I'm getting errors like:
> //===================================
> MPI auto-detection failed: unknown wrapper compiler mpic++
> Please report this error to the Boost mailing list:
> You will need to manually configure MPI support.
> //===================================
> So, how do I configure MPI support?

You'll need an MPI implementation. See:

> Do I have to set up GraphML support first?

No, this is unrelated.

        - Doug

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