2

I want to write a wrapper for C++ code. My ultimate goal is to access classes and their functions written in C++ using python but right now, I am just trying to write a simple wrapper for hello world program. So, I looked online and saw boost.python is able to perform such feat. Their tutorial though is not so clear. I am trying to follow it but I am getting lost. Also the tutorial is based on windows systems and i am using mac, so it is creating more confusion for me.
I installed boost and bjam through homebrew. 

brew install boost --with-python
brew install bjam

the code i am trying to wrap. 

#include <iostream>
char const* greet(){
    return "hello world!"
}

Can you help me how to proceed with this?

For now, I downloaded Jammrootscript as directed in tutorial and edited the use-project boostto the current location of boost(/usr/local/Cellar/boost)
then, when i try to run bjam from terminal, i get following error

Jamroot:17: in modules.load
*** argument error
* rule use-project ( id : where )
* called with: ( boost : /usr/local/Cellar/boost; project boost-python-    quickstart : requirements <library>/boost/python//boost_python     <implicit-dependency>/boost//headers : usage-    requirements <implicit-dependency>/boost//headers )
* extra argument project
/usr/local/share/boost-build/src/build/project.jam:1138:see definition of rule 'use-project' being called
/usr/local/share/boost-build/src/build/project.jam:311: in load-jamfile
/usr/local/share/boost-build/src/build/project.jam:64: in load
/usr/local/share/boost-build/src/build/project.jam:145: in project.find
/usr/local/share/boost-build/src/build-system.jam:535: in load
/usr/local/share/boost-build/src/kernel/modules.jam:289: in import
/usr/local/share/boost-build/src/kernel/bootstrap.jam:139: in boost-build
/usr/local/share/boost-build/boost-build.jam:8: in module scope
jkhadka
  • 2,443
  • 8
  • 34
  • 56
  • 1
    i never used boost but you can use something called ctypes. [this link](http://stackoverflow.com/questions/145270/calling-c-c-from-python) has a complete example. Good luck – Rafael Saraiva Nov 02 '15 at 15:04
  • @Saraiva hey thanks for pointing out ctypes but it seems ctypes is a lengthy process as I have quite elaborate classes to work with. I was hoping if i could figure out boost.python, I can do the warping easily. – jkhadka Nov 02 '15 at 15:18
  • i see. Anyway, tipically in a wrapper you only expose a well-defined interface. Thats how ctypes work and how (for instance) JNI works (i recently had to create a Java wrapper for a c++ code). No matter how complex the existing code is remember that a wrapper accesses the wrapped code through simple well-defined calls (thus the ctypes). Good luck with the boost, i'm sure you will make it work – Rafael Saraiva Nov 02 '15 at 15:25
  • check out this [link](http://stackoverflow.com/questions/20322027/including-system-libraries-with-bjam-for-boost-python) it looks like it might help – Rafael Saraiva Nov 02 '15 at 15:33
  • Hey thanks for the links. but sadly the boost.python tutorial is still out of my head and not yet working. i am killing myself over it now -.- – jkhadka Nov 03 '15 at 12:08

0 Answers0