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linux编译boost的链接:http://blog.csdn.net/majianfei1023/article/details/46761029
昨天编译安装好boost,今天准备使用boost.python写个python调用c++代码的样例,结果踩了非常多坑。
首先贴上代码:
1.student.cpp,一个普通的c++类
#include <iostream> #include <string> using namespace std; class student { public: void setname(string str) { name_ = str; } string getname() { return name_; } void setage(int age) { age_ = age; } int getage() { return age_; } private: string name_; int age_; };
2.student2py.cpp,把c++封装成python模块的代码,使用了boost.python
#include <boost/python.hpp> #include "student.cpp" using namespace boost::python; BOOST_PYTHON_MODULE(example) //python模块 { class_<student>("student") .def("setname",&student::setname) .def("getname",&student::getname) .def("setage",&student::setage) .def("getage",&student::getage) .add_property("name",&student::getname,&student::setname) .add_property("age",&student::getage,&student::setage) ; }
3.makefile
example.so:student.o student2py.o g++ student2py.o -o example.so -shared -fPIC -I/usr/include/python2.6 -I/home/mjf/lib/include -L/usr/lib/python2.6 -L/home/mjf/lib/lib -lboost_python student.o: g++ -c student.cpp -o student.o student2py.o:student.o g++ -c student2py.cpp -o student2py.o -fPIC -I/usr/include/python2.6 -I/home/mjf/lib/include clean: rm -rf student.o student2py.o rm -rf example.so
4.example.py,python调用*.so的演示样例代码
import example stu = example.student() stu.setname("mjf") stu.setage(25) print stu.name print stu.age
本来以为一帆风顺。结果make的时候出了各种纠结的问题:
1.
../boost/python/detail/wrap_python.hpp:50:23: error: pyconfig.h: No such file or directory
./boost/python/detail/wrap_python.hpp:75:24: error: patchlevel.h: No such file or directory
./boost/python/detail/wrap_python.hpp:78:2: error: #error Python 2.2 or higher is required for
./boost/python/detail/wrap_python.hpp:142:21: error: Python.h: No such file or directory
./boost/python/instance_holder.hpp:34: error: ‘PyObject’ has not been declared
./boost/python/instance_holder.hpp:41: error: expected ‘;’ before ‘(’ token
./boost/python/instance_holder.hpp:45: error: ‘PyObject’ has not been declared
./boost/python/detail/wrapper_base.hpp:21: error: expected initializer before ‘*’ token
./boost/python/detail/wrapper_base.hpp:23: error: expected initializer before ‘*’ token
各种查资料发现是python的问题。
缺少依赖库 python-devel,要安装一下:
sudo yum install python-devel
2.攻克了上面的问题。又发现了新的问题。
/usr/bin/ld: cannot find -lboost_python
一查,果然发现没有libboost_python.so,安装boost的时候我的确是全然安装的。不知道怎么搞的,没装好预计。
又一次装了一下boost.python
./bootstrap.sh --prefix=/home/mjf/lib
sudo ./b2 --with-python install
大功告成,花了接近两个小时解决一些问题。能够成功用python调用example.so
最后:感谢stackoverflow,非常多问题的答案都能在上面找得到。