#17682: Generic filename extension for shared libraries
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Reporter: gouezel | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.5
Component: porting: Cygwin | Resolution:
Keywords: | Merged in:
Authors: Sebastien Gouezel | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/gouezel/dll_extension | db7df5c13b7c57272f0cc262c89d80a632c878ef
Dependencies: | Stopgaps:
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Comment (by gouezel):
Replying to [comment:8 jakobkroeker]:
Short answer: the code you show is fine, no need to change anything.
Long answer: shared libraries usually have the extension `.so` on unix-
likes. So, some parts of sage's code assume that this is a universal
extension, and use it for loading or doctesting purposes. This leads to
problems on cygwin, where the extension is `.dll`. The patch fixes this
code, replacing the universal `.so` with an extension depending on the
platform (`.dll` on windows, `.so`anywhere else). Code that already
considered the possibility of different extensions is fine.
There is yet another difference on MacOS, where the extension for shared
libraries can be `.so` or `.dylib` -- this means that, in this case, there
is no universal possible choice, so I picked `.so` since it is the most
common in sage. In the case of libsingular, I don't know if it is built
using `.so` or `.dylib` (and I don't have a Mac to test). If it is `.so`,
one might consider using the patch to predict the correct extension, but
in any case the current code works fine.
--
Ticket URL: <http://trac.sagemath.org/ticket/17682#comment:9>
Sage <http://www.sagemath.org>
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