#6743: cygwin metaticket: port Sage to Microsoft Windows (via Cygwin): stage 1
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make building Sage automatic
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Reporter: was | Owner: was
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-5.7
Component: cygwin | Resolution:
Keywords: sd31 sd32 | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by jpflori):
Replying to [comment:131 dimpase]:
> Replying to [comment:129 jpflori]:
> > R was upgraded at #14008 and merged in sage-5.7.beta2 and now needs
math functions for long doubles, more precisely logl, which is not
provided by Cygwin's libm.
> >
> > Not sure if its possible to disable the use of this function in R,
otherwise I guess we're back to installing Cephes on Cygwin.
> Yes, that's where my Cygwin install of 5.7.beta2 got stuck, too.
>
> as a temporary plug, we can do something like
> {{{
> #define logl log
> }}}
> in the right place.
FYI this is exactly what R (not using the same mechanism) does when
--disable-long-double.
> Cygwin has a weird long double size - 12 bytes, so in that sense it's
not as huge loss of precision as for sane platforms.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6743#comment:133>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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