#13804: libfplll fails to build on recent Cygwin
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Reporter: jpflori | Owner: tbd
Type: PLEASE CHANGE | Status: new
Priority: major | Milestone: sage-5.6
Component: PLEASE CHANGE | Keywords: libfplll spkg cygwin
Work issues: | Report Upstream: None of the above - read
trac for reasoning.
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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On my recent installation of Cywgin (on 64 bits Windows 7), building
libfplll fails because make complains there is no rule to build fplll.
Indeed there is one for fplll$(EXEEXT), but no for fplll and $(EXEEXT) is
non empty on Cygwin.
Nonetheless, if the file fplll.exe exists, then "make fplll" will happily
tell you that its up to date and go on with its job.
What is strange is that the libfplll spkg has not changed for a while and
I did not have this problem with Sage 5.2 on the same Windows (but with a
previous version of Cygwin or of make I guess).
So there must have been some changes in the order the Makefile rules or
dependencies are treated.
Whatsoever I think the proper fix is to modify the Makefiles, but I'll
provide the less intrusive solutio I can think of.
And by the way the libfplll we ship is old.
See #12835.
So I won't report this upstream, unless we update libfplll and the problem
is still present.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13804>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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