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Asked: 2026-05-25T05:53:15+00:00

I have a C++ library that I am wrapping with SWIG to make accessible

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I have a C++ library that I am wrapping with SWIG to make accessible in python. It is my understanding (from experience) that when SWIG wraps a C++ library in python, upon loading it places the C++ library symbols in a “local” scope. That is – a scope which does not enable future dynamically linked libraries to find the symbols.

(I’m getting this definition of “local” from man dlopen(3) )

Is there any way to get SWIG to place these symbols into the “global” scope, such that any future dynamically linked libraries can find them?

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1 Answer

  1. Editorial Team

    You can make python dlopen shared objects with the RTLD_GLOBAL flag by calling setdlopenflags in sys, e.g.:

    sys.setdlopenflags(dl.RTLD_NOW | dl.RTLD_GLOBAL)

    before your module is loaded. (There’s a discussion on swig-users about this)

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