linking a python/cython exenstion to a specific dynamic library?

[Dima Pasechnik]

On https://trac.sagemath.org/ticket/25477 we need to link a cython extension sage/groups/perm_gps/permgroup_element.so

to a specific (dynamic) library, namely to local/lib/libgap.so (the latter not to be confused with the cython extension libgap.so)

Where on Earth does one have to specify this? E.g. how the cython extension libgap.so (created from sage/libs/gap/libgap.pyx) gets linked to local/lib/libgap.so.4, where is the corresponding configuration?

Does one need some pxd file, or something?

Thanks!

[Dima Pasechnik]

turns out is simply needed

# distutils: libraries = gap

in the corresponding pxd file. Duh...