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Editorial Team
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Asked: 2026-05-28T07:52:28+00:00

I would like to generate C wrappers over some C++ API using SWIG. From

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I would like to generate C wrappers over some C++ API using SWIG.

From the SWIG documentation SWIG and C++:

6.2 Approach

To wrap C++, SWIG uses a layered approach to code generation. At the lowest level, SWIG
generates a collection of procedural ANSI-C style wrappers. These wrappers take care of
basic type conversion, type checking, error handling, and other low-level details of the
C++ >binding. These wrappers are also sufficient to bind C++ into any target language that
supports built-in procedures. In some sense, you might view this layer of wrapping as
providing a C library interface to C++.

However, I don’t see any option to do just that, without generating code for using the API in a language like Python, Ruby, etc. How can I get just the C wrappers?

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1 Answer

  1. Editorial Team

    Although the main branch of SWIG cannot generate C wrappers for C++ API (the SWIG documentation quoted in the question is a bit misleading), there is a SWIG branch created during Google Summer of Code 2008 and available at https://swig.svn.sourceforge.net/svnroot/swig/branches/gsoc2008-maciekd/ which does just that. I have found the answer here: C++ to C Wrapper using SWIG (for FLTK)

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