Using Boost.Python to build a shared lib and import it in Blender through Python

What I currently try to achieve is building a python mapping of my C++ classes through Boost.Python. After this I want to use the resulting shared library in a blender add-on to be able to take advantage of already existing functionality coming from the mapped C++ classes.

I can already build my shared library and write sample scripts in python, which are using my library as well.

Everything fine here but the problem is that as soon as I try to use it in an add-on, Blender 2.74 keeps crashing all the time as soon as I add an import statement with this little hint in the crash report:

6   libboost_python.dylib           0x000000010aa7cc3e boost::python::detail::init_module(PyModuleDef&, void (*)()) + 30 (module.cpp:44)

In module.cpp inside of boost line 41-46:

BOOST_PYTHON_DECL PyObject* init_module(PyModuleDef& moduledef,       void(*init_function)())
{
    return init_module_in_scope(
        PyModule_Create(&moduledef),
        init_function);
}

My boost 1_58 is compiled using Python 3.4.2:

otool -L /usr/local/lib/libboost_python.dylib
/usr/local/lib/libboost_python.dylib:
libboost_python.dylib (compatibility version 0.0.0, current version 0.0.0)
/Library/Frameworks/Python.framework/Versions/3.4/Python (compatibility version 3.4.0, current version 3.4.0)
/usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 120.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1213.0.0)

Running the python3 bin from that directory gives me:

python3
Python 3.4.2 (v3.4.2:ab2c023a9432, Oct  5 2014, 20:42:22)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>

The Blender Python console gives me:

PYTHON INTERACTIVE CONSOLE 3.4.2 (default, Nov 25 2014, 12:01:44)  [GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.54)]

Command History:     Up/Down Arrow
Cursor:              Left/Right Home/End
Remove:              Backspace/Delete
Execute:             Enter
Autocomplete:        Ctrl-Space
Zoom:                Ctrl +/-, Ctrl-Wheel
Builtin Modules:     bpy, bpy.data, bpy.ops, bpy.props, bpy.types, bpy.context, bpy.utils, bgl, blf, mathutils
Convenience Imports: from mathutils import *; from math import *
Convenience Variables: C = bpy.context, D = bpy.data
>>> 

My own project uses this python version as well. Also Blender uses this Python version.

I really don't know what to try next here since in standalone mode EVERYTHING works as expected. Also the fact that the crash even occurs as soon as I run a new script inside Blenders Text Editor having the import statement.

Anybody having experience with Boost.Python and Blender?

Thanks in advance