#14038: Let libgap build a shared library on Cygwin
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Reporter: jpflori | Owner: tbd
Type: defect | Status: needs_work
Priority: major | Milestone: sage-5.7
Component: packages | Resolution:
Keywords: cygwin spkg libgap | Work issues:
Report Upstream: N/A | Reviewers: Jean-Pierre Flori
Authors: Volker Braun | Merged in:
Dependencies: | Stopgaps:
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Comment (by dimpase):
Replying to [comment:23 jpflori]:
> Whatever, I guess that passing -no-undefined to libtool just overrides
its default behavior to pass -undefined dynamic_lookup to ld on OS X.
>
indeed.
> So we have two solutions:
> * only pass -no-undefined where it is really needed, that is on Cygwin,
> * use _NSGetEnviron() routine from <crt_externs.h> to define environ on
OS X.
let us try to see if the latter is needed. My understanding is that
currently the corresponding part of GAP functionality
({{{ExecuteProcess()}}}) is not exposed, and/or not implemented, in
libGAP, and so it's not visible whether it is a bug to use -undefined
dynamic_lookup to get (or not?) {{{environ}}} on OSX.
Or, perhaps, Volker knows the answer already? Perhaps he's not going to
use this part of the orginal GAP code in libGAP at all?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14038#comment:24>
Sage <http://www.sagemath.org>
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