Python.boost学习笔记（3）

最新推荐文章于 2020-12-24 01:03:54 发布

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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'
>>>