#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:9 leif]:
> Didn't we want to replace the check for `sqrtl()` by a check for
`?gammal()`? (OTOH I don't recall why exactly... ;-) )
>
> Actually, we need both `sqrtl()` and `[lt]gammal()` unless we build
Cephes, i.e., unless we're on Cygwin(?) or on FreeBSD, or skip the test
because `SAGE_PORT` is set.
We don't build Cephes on Cygwin.
On Cygwin, the only *l functions actually needed anywhere in Sage and
which caused troubles (and that Cygwin libm does not provide, not sure
what it actually provides, but I seem to remember it provides no "long
double" functions at all) was "logl" because of R, but we patched R so
that its not needed anymore, and the next R upstream version provides a
configure option to disable the use of "long double" functions anyway.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14406#comment:11>
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