Boost. python compilation and example

Boost. python compilation and example

 

Yesterday, we compiled and installed boost. Today we are going to use boost. python to write an example of python Calling c ++ code. The result is a lot of pitfall.

First, paste the Code:

1. student. cpp, a common c ++ class

 

#include 
 
  #include 
  
   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, which encapsulates c ++ as the code of the python module and uses boost. python

 

 

# Include
 
  
# Include student. cppusing namespace boost: python; BOOST_PYTHON_MODULE (example) // python module {class _
  
   
(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.og++ 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_pythonstudent.o:g++ -c student.cpp -o student.o student2py.o:student.og++ -c student2py.cpp -o student2py.o -fPIC -I/usr/include/python2.6 -I/home/mjf/lib/includeclean:rm -rf student.o student2py.orm -rf example.so 

 

 

4. example. py: python calls the sample code of *. so.

 

import examplestu = example.student()stu.setname(mjf)stu.setage(25)print stu.nameprint stu.age

 

 

I thought it was smooth sailing. As a result, there were various tangled problems in make:

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
./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

 

Various types of data query and discovery are python problems.

If the dependent library python-devel is missing, install it:

Sudo yum install python-devel

 

2. Solved the above problems and found new problems,

/Usr/bin/ld: cannot find-lboost_python

 

I found that there was no libboost_python.so. I did install it completely when installing boost. I don't know how to do it. I didn't have an estimate. Reinstall boost. python.

./Bootstrap. sh -- prefix =/home/mjf/lib

Sudo./b2 -- with-python install

 

It took nearly two hours to solve some problems. You can use python to call example. so.

 

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