#19610: Fix dependencies on PARI
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Reporter: jdemeyer | Owner:
Type: defect | Status: positive_review
Priority: major | Milestone: sage-6.10
Component: cython | Resolution:
Keywords: | Merged in:
Authors: Jeroen Demeyer | Reviewers: Jean-Pierre Flori
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jdemeyer/fix_dependencies_on_pari| 5d0e4d30588ab0f13bfc0770d2b4b407d7580035
Dependencies: | Stopgaps:
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Changes (by jpflori):
* status: needs_review => positive_review
* reviewer: => Jean-Pierre Flori
Comment:
I suggest to fix the dependency here and fix the overlinking issue
elsewhere (e.g. using leif branch).
As far as Cygwin is concerned, the situation is quite good actually: you
just need to have at hand libs directly used by your executable/library
and feed them to the linker with appropriate flags as I just tested on a
VM.
If these libraries need further libraries then everything is resolved at
run time.
So in the linking ticket, we can drop the `gmp` library.
The main issue with cygwin is that the need above is mandatory: if you
wanna use a gmp function (whatever it relies on, even further libraries)
then you need to tell it to the linker whereas linux is more negligent
about that and just bet that at runtime every undefined symbol will be
resolved.
And many times people modified a random Sage cython file, use some gmp
function (typically `mpn_popcount` don't ask me why :)) and forgott to
make gmp a dependency.
Nowadays, thanks to Jeroen work, it should be less an issue as when people
want to use `mpn_popcount` they have to cimport it and it will
automagically tell the linker that gmp has to be linked in.
--
Ticket URL: <http://trac.sagemath.org/ticket/19610#comment:45>
Sage <http://www.sagemath.org>
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