On Thursday, 19 July 2012 13:26:47 UTC+8, Dima Pasechnik wrote: > > On Thursday, 19 July 2012 07:35:15 UTC+8, Jean-Pierre Flori wrote: >> >> >> In fact I somehow solved the problem. >> I think there is some black magic dll import/export stuff missing to let >> ld link the files together on Cygwin. >> >> As a first solution, adding -Wl,--enable-auto-import to >> extra_compiler_flags in module_list.py seems to be sufficient to fix the >> problem. >> > > As far as I recall, we did something like this to a number of packages > already last year... > > > >> This let the farey stuff compile. >> Hopefully this will be the last step before Sage completely compiles, >> with obviously no guarantee that it actually starts afterward :) >> >> A more proper fix could be to let Cython add _declspec(_dllimport) >> (approximate spelling...) to the produced header file, not sure about that. >> > > it could be the case. IMHO Cython is not tested on Cygwin, although I > might be wrong there. > Last time I checked (cygwin version 1.7.10 ?) Sage's Cython > building dynamic modules, even very simple ones, did not work well due to > Cygwin > fork problems. > Even now if I try easy_install cython on Cygwin, I get an error indicating > that it has no idea about Cygwin, basically, complaining about absence of > Microsoft's C compiler. > > however, installing Cython 0.16 from source works on Cygwin 1.7.15, and is able to build some (trivial) dynamic extensions, so this looks much better now than last year.
Can you post somewhere your Cygwin-specific patches to Sage (which version, exactly?) you produced so far? With them in hand, I'll give it a try. Dima > Dima > > >> >> By the way, i guess the farey lines are a missing proper "depends" >> section including farey.hpp and sl2z.hpp, but that's not the source of my >> problems. >> > -- -- To post to this group, send an email to [email protected] To unsubscribe from this group, send an email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
