[Scons-users] Does SCons work correctly for fortran submodules?

Peter Diener diener at cct.lsu.edu
Thu May 31 11:14:07 EDT 2018


Hi all,

Any thoughts on whether my expectations to SCons are incorrect or 
whether there is a bug when it comes to compiling fortran source code 
using type bound procedures in submodules?

I can repost my example code that demonstrates the issue if necessary.

Cheers,

   Peter

On Thursday 2018-05-03 11:13, Bill Deegan wrote:

>Date: Thu, 3 May 2018 11:13:01
>From: Bill Deegan <bill at baddogconsulting.com>
>Reply-To: SCons users mailing list <scons-users at scons.org>
>To: SCons users mailing list <scons-users at scons.org>
>Subject: Re: [Scons-users] Does SCons work correctly for fortran submodules?
>
>User's mailing list is the correct place for this query.
>The developer's mailing list is generally for discussing development of
>SCons and not really the use thereof.
>
>I'll try and look at this later today.
>
>
>On Thu, May 3, 2018 at 11:26 AM, Peter Diener <diener at cct.lsu.edu> wrote:
>      Hi,
>
>      Any further advice on this issue?
>
>      Should this go to the developers list?
>
>      Cheers,
>
>        Peter
>
>      On Friday 2018-04-27 16:48, Peter Diener wrote:
>
>            Date: Fri, 27 Apr 2018 16:48:58
>            From: Peter Diener <diener at cct.lsu.edu>
>            To: SCons users mailing list <scons-users at scons.org>
>            Subject: Re: [Scons-users] Does SCons work correctly
>            for fortran submodules?
>
>            Hi,
>
>            A quick update. The release version scons-3.0.1
>            shows exactly the same behavior.
>
>            Cheers,
>
>             Peter
>
>            On Friday 2018-04-27 16:38, Peter Diener wrote:
>
>                  Date: Fri, 27 Apr 2018 16:38:14
>                  From: Peter Diener <diener at cct.lsu.edu>
>                  Reply-To: SCons users mailing list
>                  <scons-users at scons.org>
>                  To: SCons users mailing list
>                  <scons-users at scons.org>
>                  Subject: Re: [Scons-users] Does SCons
>                  work correctly for fortran submodules?
>
>                  Hi Bill,
>
>                  I first saw it with an earlier version
>                  of SCons. I don't remember which one.
>                  Before reporting I wanted to check if it
>                  was a bug that was already fixed, so I
>                  got the development version. I can try
>                  it with the release version as well.
>
>                  scons --tree=prune
>
>                  does not give me any additional
>                  information. It gives exactly the same
>                  output as just scons.
>
>                  Cheers,
>
>                   Peter
>
>                  On Friday 2018-04-27 14:46, Bill Deegan
>                  wrote:
>
>                        Date: Fri, 27 Apr 2018
>                        14:46:35
>                        From: Bill Deegan
>                        <bill at baddogconsulting.com>
>                        Reply-To: SCons users
>                        mailing list
>                        <scons-users at scons.org>
>                        To: SCons users mailing list
>                        <scons-users at scons.org>
>                        Subject: Re: [Scons-users]
>                        Does SCons work correctly
>                        for fortran submodules?
>
>                        Peter,
>
>                        Any reason you're using the
>                        development version of SCons
>                        instead of the
>                        released version 3.0.1?
>
>                        What does scons --tree=prune
>                        show you?
>
>                        -Bill
>
>                        On Fri, Apr 27, 2018 at
>                        12:04 PM, Peter Diener
>                        <diener at cct.lsu.edu> wrote:
>                             Hi,
>
>                             Is SCons supposed to
>                        work for fortran codes that
>                        use submodules
>                             and type bound
>                        procedures? I have a code
>                        project that relies
>                             heavily on
>                             those features and I
>                        would really like to use
>                        SCons for it. I
>                             was able
>                             to produce a small
>                        example code that
>                        demonstrates the problem I
>                             encounter (it only
>                        appears with more than one
>                        submodule) that I
>                             have
>                             attached along with the
>                        SConstruct file I use.
>
>                             The code example
>                        consists of two modules,
>                        each containing a
>                             fortran type with 2
>                        type bound procedures ( a
>                        set and get for an
>                             integer value). In the
>                        module itself the type and
>                        the interface
>                             to the procedures are
>                        defined while the actual
>                        implementation of
>                             the procedures are done
>                        in the submodules. Normally
>                        I would keep
>                             the module and
>                        corresponding submodule in
>                        different files to
>                             separate the interface
>                        and implementations.
>
>                             When I run scons on
>                        this example, I get:
>
>                             scons: Reading
>                        SConscript files ...
>
>                             scons: *** Multiple
>                        ways to build the same
>                        target were specified
>                             for: function.mod 
>                        (from ['test_1.f90'] and
>                        from ['test_2.f90'])
>
>                             Is my SConstruct file
>                        incorrect, should I not
>                        expect SCons to be
>                             able to handle such a
>                        case or is this a bug?
>
>                             My SCons is an up to
>                        date checkout of the GitHub
>                        repository,
>                             i.e.
>
>                             scons --version
>
>                             gives:
>
>                             SCons by Steven Knight
>                        et al.:
>                                     script:
>                           
>                         v3.1.0.alpha.yyyymmdd.867f762f6c1e23524cd1b0262b8e93e822b23d0c
>
>                             Note, the example code
>                        compiles correctly with a
>                        sufficiently
>                             new version of gfortran
>                        and the command line:
>
>                             gfortran test_1.f90
>                        test_2.f90
>                        test_submodules.f90 -o
>                             test_submodules.x
>
>                             Thank you in advance
>                        for any advice.
>
>                             Cheers,
>
>                               Peter Diener
>
>                           
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