#15317: Troubles with Python and ncurses on Cygwin
-------------------------------+---------------------------------------
Reporter: jpflori | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-5.13
Component: porting: Cygwin | Keywords: cygwin spkg ncurses
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
-------------------------------+---------------------------------------
Python currently fails/is suboptimal on Cygwin because:
* it does not properly detect readline which is only installed as a shared
library, patch "2.7.3-dylib.patch" from Cygwin package fixes that;
* the curses module is not built because of undefined refs, just passing
-lcurses when linking is not enough, one should add -ltinfo;
* it segfault at startup when loading the readline module, not sure why.
It looks exactly as what is reported at
http://trac.macports.org/ticket/29496 . Rebuilding ncurses with debug info
(including CFLAGS="-O0 -g" which cannot easily be passed right now) does
not give much info. The offending line pointed by GCC is "char *result =
exit_attribute_mode;"; maybe some dark magic going on as reported in
http://lists.gnu.org/archive/html/bug-ncurses/2006-10/msg00002.html ;
please not that on Cygwin the stack is small by default but playing a
little bit with that did not really help. Further info: ncurses 5.7 is
fine, ncurses 5.8 fails in the same way.
--
Ticket URL: <http://trac.sagemath.org/ticket/15317>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/groups/opt_out.
