Python.boost学习笔记（3）

前面学习了如何把python embed 到 c++里并且实现共享object. boost主要的作用还是在于wrap c++的API。 下面会学习相关的知识。

第一个简单的例子是如何将简单的function wrap并且编译生成.so文件

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

#include <boost/python.hpp>

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


下面是Makefile:

# location of the Python header files

PYTHON_VERSION = 2.7
PYTHON_INCLUDE = /usr/include/python$(PYTHON_VERSION)

# location of the Boost Python include files and library

BOOST_INC = /usr/include
BOOST_LIB = /usr/lib

# compile mesh classes
TARGET = hello_ext

$(TARGET).so: $(TARGET).o
g++ -shared -Wl,--export-dynamic $(TARGET).o -L$(BOOST_LIB) -lboost_python -L/usr/lib/python$(PYTHON_VERSION)/config -lpython$(PYTHON_VERSION) -o $(TARGET).so

$(TARGET).o: $(TARGET).C
g++ -I$(PYTHON_INCLUDE) -I$(BOOST_INC) -fPIC -c $(TARGET).C

[ethan@localhost pack]$ python
Python 2.7.5 (default, Nov  3 2014, 14:26:24)
[GCC 4.8.3 20140911 (Red Hat 4.8.3-7)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import hello_ext
>>> hello_ext.greet()
'hello, world'
>>>