boost_python你好示例不起作用

Question

I am trying to get the hello world example for boost python working. I am using OSX , boost 1.55 and python 2.7

Here is my hello.cpp

#include <boost/python/module.hpp>
#include <boost/python/def.hpp>

char const* greet()
{
   return "hello, world";
}

BOOST_PYTHON_MODULE(hello_ext)
{
    using namespace boost::python;
    def("greet", greet);
}

and I have compiled it with the following two lines:

g++ -fPIC -I/usr/include/python2.7/ -I/usr/local/include/ -c hello.cpp
g++ -shared -Wl, -o hello.so hello.o -L/usr/lib -L/usr/local/lib -lpython2.7 -lboost_python

When I try to import it into python by doing import hello.so I get the following error:

ImportError: dynamic module does not define init function (inithello)

Any ideas?

Answer 1

原来BOOST_PYTHON_MODULE中的名称必须与库的名称匹配，所以我将链接步骤更改为

g++ -shared -Wl, -o hello_ext.so hello.o -L/usr/lib -L/usr/local/lib -lpython2.7 -lboost_python