// File: btBoostWrapper.cpp
#ifndef _btBoostWrapper_cpp
#define _btBoostWrapper_cpp

#pragma GCC diagnostic ignored "-Wunused-variable"
#pragma GCC diagnostic ignored "-Wreorder"

#include <boost/python.hpp>
#include <btBoost/btBoostLinearMath.hpp>
#include <btBoost/btBoostDynamics.hpp>
#include <btBoost/btBoostHello.hpp>

using namespace boost::python;

BOOST_PYTHON_MODULE(bullet)
{
    defineHello();
    defineLinearMath();
    defineDynamics();
}

#endif // _btBoostWrapper_cpp

// File: btBoostWrapper.cpp
#ifndef _btBoostWrapper_cpp
#define _btBoostWrapper_cpp

#pragma GCC diagnostic ignored "-Wunused-variable"
#pragma GCC diagnostic ignored "-Wreorder"

#include <boost/python.hpp>
#include <btBoost/btBoostLinearMath.hpp>
#include <btBoost/btBoostDynamics.hpp>

using namespace boost::python;

BOOST_PYTHON_MODULE(bullet)
{
    defineLinearMath();
    defineDynamics();
}

#endif // _btBoostWrapper_cpp

--- 
+++ 
@@ -8,11 +8,13 @@
 #include <boost/python.hpp>
 #include <btBoost/btBoostLinearMath.hpp>
 #include <btBoost/btBoostDynamics.hpp>
+#include <btBoost/btBoostHello.hpp>
 
 using namespace boost::python;
 
 BOOST_PYTHON_MODULE(bullet)
 {
+    defineHello();
     defineLinearMath();
     defineDynamics();
 }
Define a simple hello method for scratch testing
