Hi Dave,

On Thu, Sep 9, 2010 at 2:09 AM, Dr. David Kirkby
<david.kir...@onetel.net> wrote:
> There's odd bits code scattered around in Sage that do tests for g95, which
> is an old Fortran 95 compiler that in any modern Linux or Unix systems.
>
> According to Wikipedia
>
> http://en.wikipedia.org/wiki/G95
>
> gfortran was forked from g95 in 2003 - i.e. 7 years ago.
>
>
> I'm not sure at what point gfortran became the dominant compiler, but I've
> not seen g95 used in the last few years. It might still exist on some
> systems, but people tend to use gfortran instead, as that is part of gcc.
>
> Do others, like me, believe we just remove such bits of code as and when we
> come across them? i.e. don't make specific tests for gfortran vs g95?
>
> g95 binaries have already been removed from Sage
>
> http://trac.sagemath.org/sage_trac/ticket/7485
>
> There's a few bits of code in the ATLAS package which make such tests - one
> of them uses the "readelf" program to determine if a pre-installed version
> of ATLAS was built with g95.
>
> William said here
>
> http://groups.google.com/group/sage-devel/browse_thread/thread/1b6235b738348000/d0f3efda8c0bcf0c?lnk=gst&q=g95+remove#d0f3efda8c0bcf0c
>
> "Probably the only platforms that get g95 are older OS X."
>
> Since ATLAS is not installed on OS X, it seems even less worthwhile having
> such a test in the ATLAS package.
>
> But before removing this code, I thought it wise to get the opinion of
> others.


When building femhub and packages for femhub, I have to deal with
these fortran issues as well. And I never understood

a) why sage used g95 in the first place (yes I know it's smaller, but
it's not standard at all imho)

b) all this mess with fortran --- lots of packages (like Trilinos)
simply fail to compile thanks to some setup in Sage/FEMhub due to
fortran/blas/atlas. It works in Ubuntu.

So I just want to give you a big thumbs up to make these fortran
issues less pain, and following standards more.

Ondrej

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