[C++-sig] boost.python errors on Linux

[Stefan Seefeld]

On 12/11/2010 07:29 AM, Max Stricker wrote:
> Hi,
>
> i need to expose some C++ methods to python and came accross boost.python.
> I installed libboost-python1.42-dev on an Ubuntu machine and tried to work with a
> simple program found in the docs:
>
> #include<iostream>
>
> class Foo {
> 	public:
> 		void bar() {
> 			std::cout<<  "Hello"<<  std::endl;
> 		}
> };
>
> #include<boost/python.hpp>
> #include<Python.h>
> using namespace boost::python;
>
> BOOST_PYTHON_MODULE(libboopyclass) {
> 	boost::python::class_<Foo>("Foo")
> 		.def("bar",&Foo::bar);
> }
>
>
> I build it using: gcc foo.cpp  -I /usr/include/python2.6 -l python2.6 -l boost_python
>
> I get a huge error list indicating that objects like PyObject or PyTypeObject could not be found,
> the detailed output is available here: http://pastebin.com/TyN9dZ09

Add the '-shared' option (to indicate that you want to build a shared 
library), remove the space in '-l boost_python', and specify the output 
filename (such as '-o foo.so'). Finally, you should compile with g++, 
not gcc.
For example:

g++ -shared -o foo.so foo.cpp -I/usr/include/python2.6 -lpython2.6 
-lboost_python

     Stefan


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