OSX El Capitan C++ boost and Xcode fails building project

Question

I have been desperately looking around the internet to find a workaround for my C++ boost project to work on my OSX El Captian. here is the simple code I'm trying to compile:

#include <iostream>
#include <boost/python.hpp>

using namespace boost::python;

int main(int argc, const char * argv[]) {
    // insert code here...
    std::cout << "Hello, World!\n";
    return 0;
}

Keeps failing to with this ERROR:

Undefined symbols for architecture i386:
"__Py_NoneStruct", referenced from:
  boost::python::api::object::object() in main.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I have installed boost library via homebrew and defined the correct Header and Lib path in my Xcode project. I also tried different combination of build settings hoping the project would build. NO LUCK!!! Any help is appreciated.

Answer 1

First make sure you have installed boost using homebrew like this

brew install boost-python

otherwise the installed boost doesn't have the boost python library.

Then you need to add

-lboost_python 

in your compile script

and also link to python libraries as well. To link to python you may need to pass

-lpython

too.