#14406: Various prereq fixes
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Reporter: jdemeyer | Owner: drkirkby
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.9
Component: porting | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Jeroen Demeyer | Merged in:
Dependencies: | Stopgaps:
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Comment (by jpflori):
Replying to [comment:19 leif]:
> Replying to [comment:15 jdemeyer]:
> > Replying to [comment:9 leif]:
> > > Actually, we need both `sqrtl()` and `[lt]gammal()` unless we build
Cephes
> > It seems not, Cygwin doesn't have `sqrtl()`, nor does it build Cephes.
Despite this, Sage builds.
>
> IIRC, because we (still) have some special-casing on Cygwin w.r.t. at
least (just?) the (`long double`) gamma functions.
I'll have a look.
>
> [[BR]]
>
> To repeat Karl-Dieter's question: What is Cephes then needed for at all
[on e.g. FreeBSD]?
>
Maybe for complex functions "c*" (which are now in Cygwin libm but used
not to be)?
> I.e., we should probably check for those functions Cephes provides (and
Sage needs) [unless we're on FreeBSD where Cephes gets built anyway, or
`SAGE_PORT` is set].
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14406#comment:20>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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