Hi, certainly we did something with Sage on cygwin to work around these... Just in case, Dima
On Tue, Apr 26, 2016 at 3:58 PM, Erik Bray <erik.m.b...@gmail.com> wrote: > Hi again, > > Sorry if I'm spamming the list too much, but I've encountered another > pretty serious and unfortunate issue with Cython on Cygwin. > > The problem now is that many of libm long double functions like sqrtl, > tanl, etc. are missing on Cygwin (missing from newlib to be specific). > I think this is a previously known issue, but nothing's ever really > been done about it. Well, to be clear, sometimes they're present, but > only when sizeof(double) == sizeof(long double). However on 64-bit > Cygwin sizeof(long double) == 16, so the functions are simply not > defined. > > This seems to be due to lack of interest / effort: > https://www.cygwin.com/ml/cygwin/2011-04/msg00231.html That post is 5 > years old, but I can't find any evidence that this has changed. > > There are quite a few tests in Cygwin's test suite that test long > double support. I guess what I'm asking is what would be the best > thing to do about it. > > I could just skip those tests on Cygwin, though I'm not sure the best > way to go about skipping an entire test for a given platform. > > More generally though, outside the context of testing, this means > Cygwin will sometimes generate code that cannot be compiled on this > platform, and a question arises as to what to do about that. I have > some thoughts, but am not sure if it's worth discussing any further or > not. > > Thanks, > Erik > _______________________________________________ > cython-devel mailing list > cython-devel@python.org > https://mail.python.org/mailman/listinfo/cython-devel _______________________________________________ cython-devel mailing list cython-devel@python.org https://mail.python.org/mailman/listinfo/cython-devel
