Use what arpack & atlas variants for use with octave?

[David Strubbe]

Hi,

As far as I know, there is no interaction between which compilers are for
atlas and what is used for any dependency. I am not sure why Marius thought
they need the same Fortran compiler.

The atlas port will choose a Fortran compiler on its own if any is
available. Using a variant just specifies manually which one. You need the
Fortran support to be able to link from Fortran in a dependency.

Murray, regarding "arpack does offer a +gcc5 variant, yet “sudo port info
arpack” lists a build dependency on gcc6." --
"port info" shows dependencies for the default variants. So, that doesn't
mean that arpack +gcc5 would depend on gcc6.

David

On Sun, Nov 6, 2016 at 11:53 AM, Murray Eisenberg <murrayeisenberg at gmail.com
> wrote:

> OK, I understand that. But there seems to be a catch:
>
>   * arpack does offer a +gcc5 variant, yet “sudo port info arpack” lists a
> build dependency on gcc6.
>
> And as you’ve noticed and as I was already aware:
>
>   * atlas has no +gcc6 variant.
>
> Will that be a problem in installing both arpack and atlas (before
> installing octave)?
>
>
> On Nov 6, 2016, at 2:31 PM, Marius Schamschula <lists at schamschula.com>
> wrote:
>
> Murray,
>
> The version of gfortran depends on the version of gcc chosen by the
> compilers port group (currently gcc5).
>
> On Nov 6, 2016, at 12:50 PM, Murray Eisenberg <murrayeisenberg at gmail.com>
> wrote:
>
>
> On Nov 6, 2016, at 1:27 PM, Marius Schamschula <lists at schamschula.com>
> wrote:
>
>
> On Nov 6, 2016, at 12:19 PM, Murray Eisenberg <murrayeisenberg at gmail.com>
> wrote:
>
> I’m reinstalling arpack, atlas, and octave during completion of MacPorts
> migration to macOS Sierra.
>
> On El Capitan, my installed ports included:
>
>    arpack @3.3.0_3+atlas+gfortran
>    atlas @3.10.2_2
>   octave @4.0.3_1+app+atlas+docs+fltk+gfortran+graphicsmagick+
> qt4gui+sound-accelerate-java
>
> I began now with:
>
>    sudo port install arpack -accelerate+atlas
>
> (1) Should I have added +gfortran there, since for octave I’m going to be
> including variant +gfortran ?
>
> (2) Is there any particular reason to use a +gccxx variant with atlas?
>
>
> The choice of which version of gfortran is used for arpack should be the
> same as the version used to build atlas (and for that matter octave).
>
> Unfortunately, atlas currently only supports gcc5, not gcc6. See
> https://trac.macports.org/ticket/52606
>
>
> I don’t understand about “which version of gfortran”: arpack, like octave,
> offers +gfortran but without any indication of version of gfortran.
> And atlas does not offer any variant (at least directly) of fortran.
>
>
>
> ---
> Murray Eisenberg murrayeisenberg at gmail.com
> 503 King Farm Blvd #101 Home (240)-246-7240
> Rockville, MD 20850-6667 Mobile (413)-427-5334
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.macports.org/pipermail/macports-users/attachments/20161106/d33cfc48/attachment.html>