#14410: Let ATLAS build shared libraries on Cygwin
-------------------------------------+----------------------------
       Reporter:  jpflori            |        Owner:  tbd
           Type:  defect             |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-5.13
      Component:  porting: Cygwin    |   Resolution:
       Keywords:  atlas spkg cygwin  |    Merged in:
        Authors:  Jean-Pierre Flori  |    Reviewers:
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
   Dependencies:  #14754             |     Stopgaps:
-------------------------------------+----------------------------

Old description:

> Currently ATLAS build static libraries without problems on Cygwin, but
> the autotools build system crafted by Volker which uses libtool fail to
> repackage them into shared one.
> Indeed:
> * on usual platforms libtool already rants that it should not pack non-
> libtool objects (extracted from the static libs) together.
> * on Cygwin it just refuses to do so, and I could not find a flag to get
> the usual behavior (i.e. "rant but do it").
> The solution is to replace the libtool invokations by direct invocations
> to gcc and gfortran (or even ld if you feel adventurous).
> See http://trac.sagemath.org/sage_trac/ticket/10508#comment:392
>
> Use:
> * http://boxen.math.washington.edu/home/jpflori/spkg/atlas-3.10.1.p6.spkg
>
> This also allows building ATLAS by default on Cygwin.
> (I must admit it does not support SAGE_ATLAS_LIB correctly right now...)

New description:

 Currently ATLAS build static libraries without problems on Cygwin, but the
 autotools build system crafted by Volker which uses libtool fail to
 repackage them into shared one.
 Indeed:
 * on usual platforms libtool already rants that it should not pack non-
 libtool objects (extracted from the static libs) together.
 * on Cygwin it just refuses to do so, and I could not find a flag to get
 the usual behavior (i.e. "rant but do it").
 The solution is to replace the libtool invokations by direct invocations
 to gcc and gfortran (or even ld if you feel adventurous).
 See http://trac.sagemath.org/sage_trac/ticket/10508#comment:392

 Use:
 * http://boxen.math.washington.edu/home/jpflori/spkg/atlas-3.10.1.p6.spkg

 This also allows building ATLAS by default on Cygwin.

--

Comment (by jpflori):

 SAGE_ATLAS_LIB should be ok on Cygwin as well now...

--
Ticket URL: <http://trac.sagemath.org/ticket/14410#comment:8>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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