On Jan 25, 1:50 pm, Sebastien Barthelemy
<sebastien.barthel...@gmail.com> wrote:
> 2009/1/23 Robert Bradshaw <rober...@math.washington.edu>:
Hi,
> > Is this C++? If so, one needs a language="c++" in the Extension line.
> > At this point I might see if you can write a simple C program that
> > can call your cdd library which will expose wether or not the issue
> > is with Cython/distutils or the cdd library you're using.
>
> 'found it!
> The library, which is C code, is built with g++ instead of gcc. As the
> public function are not declared with the extern "C" construct, their
> name gets mangled when compiled by g++. I finally understood while
> reading [1] and thanks to Burcin comments.
>
> The problem lies in the library building tools, and has been corrected
> upstream a year ago. From cddlin changelog:
>
> Version 094e (February 7, 2008) /
> - Thanks to Sven Verdoolaege's fixes,
> the "configure" script now uses "gcc" as the default
> compiler, rather than "g++" in earlier releases,
> and the libraries can be linked properly with
> both C and C++ programs.
>
> Sage uses version 094b, which was released in August 2005.
>
> I will file a ticket on trac and try to package the last version.
> Thank you for your help.
No need to open a new ticket since there already is such a ticket to
upgrade. We have been waiting on some feedback from the cddlib author
to incorporate several of our fixes and not heard back from him at
all. So if someone can get in contact with him so we get all our fixes
upstream and he releases a new version this would be very nice.
> [1]http://www.yolinux.com/TUTORIALS/LibraryArchives-StaticAndDynamic.html
Cheers,
Michael
> --
> Sébastien Barthélemy
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