#14410: Let ATLAS build shared libraries on Cygwin and install static libraries
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Reporter: jpflori | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone: sage-5.9
Component: porting: Cygwin | Resolution:
Keywords: atlas spkg cygwin | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: #10508 | Stopgaps:
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Description changed by jpflori:
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
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
Also note that on platforms (all of them are unsupported by Sage though)
affected by thread related undefined symbols (https://sourceforge.net/p
/math-atlas/support-requests/895/) which makes the use of (both threaded
and unthreaded) shared libraries problematic, using (unthreaded) static
libraries should be ok.
And on every system using (unthreaded) shared libraries is currently
broken (but Sage uses threaded ones!).
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14410#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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