You know, we can bind every C library on Python or Perl programming languages. A good instance is PyQt; PyQt is bound from Qt.
My question is: Can I do the reverse of the above? I mean: suppose I have a library in Python or Perl, and I want to convert it to a C library...can it be done? However, you can think to convert a web program to shared library or a set of functions.
My Goal: I want to improve a set of security features.
Yes, you can. The term of art is "embedding," as in "embedded Python" or "embed a Python interpreter." Python has a document about it here: https://docs.python.org/2/extending/embedding.html - the general idea is you must use (at least a small part of) the Python C API to launch Python within a C or C++ application.
Once you realize you can embed a scripting language in C, and that scripting languages can invoke C, you then realize you can also embed one scripting language in another, using C as the bridge between them. For example, RubyLuaBridge: https://bitbucket.org/neomantra/rubyluabridge
A lot of commercial applications embed a scripting language interpreter within a C or C++ host program. A good, well-documented example is Adobe Lightroom, which is roughly half C++ and half Lua. You can read about that from the horse's mouth starting on page xi here: http://www.lua.org/gems/front.pdf