> On 20 Dec 2016, at 11:55, Praveen C <cprav...@gmail.com> wrote:
>
> Denis, I observe that dealii@8.4.2 and dealii@develop install their own
> separate Boost, same version but maybe different variants/flags. Trilinos
> also needs Boost. Could there be some issue with
that’s correct observation and expected behaviour.
This happens because @develop has `python` wrappers turned on by default, and
therefore requires boost with `+python` module.
This requirement is given in
depends_on(
"boost@1.59.0:+thread+system+serialization+iostreams+mpi+python",
when='@8.5.0:+mpi+python’)
consequently, when the graph of packages is concretised, boost will have
`+python`, and of course both `trilinos` and `dealii@develop` will use it.
You can disable python wrappers and consequently use `boost~python` run doing
`spack install dealii@develop~python`
To make sure Python part of the boost will not be used, you can double check
`spack spec dealii@develop~python | grep boost`
which will show you all info about `boost` to be used (compiler, architecture,
variants).
> dependencies like Boost ?
Regards,
Denis.
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