I have one case with SWIG, partly due to the lack of good C ++ examples to learn. I finally got my first program to compile with SWIG, but I have problems running it. Let me just go to the code ...
setup.py:
#!/usr/bin/env python """ setup.py file for SWIG example """ from distutils.core import setup, Extension decklist_module = Extension('_decklist', sources=['decklist_wrap.cxx', 'decklist.cpp'], ) setup (name = 'decklist', version = '0.1', author = "Me", description = """Testing!""", ext_modules = [decklist_module], py_modules = ["decklist"], )
decklist.hpp:
#include <boost/unordered_map.hpp> class DeckList{ private: boost::unordered_map<std::string, int> mainBoard; boost::unordered_map<std::string, int> sideBoard; public: void addCard(std::string name, int cardCount); int getCount(std::string cardName); DeckList(); ~DeckList(); };
decklist.cpp:
#ifndef DECKLIST_H #define DECKLIST_H #include "decklist.hpp" #include <stdio.h> DeckList::DeckList(){ } void DeckList::addCard(std::string cardName, int cardCount){ mainBoard[cardName] = cardCount; } int DeckList::getCount(std::string cardName){ return mainBoard[cardName]; } #endif
decklist.i:
//decklist.i %module decklist %{
Now on the terminal (I'm on Ubuntu Natty Narwhal) I run the following two commands:
swig -python -c++ decklist.i python setup.py build_ext --inplace
The second gives me the following answer:
running build_ext building '_decklist' extension gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c decklist_wrap.cxx -o build/temp.linux-x86_64-2.7/decklist_wrap.o cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++ gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c decklist.cpp -o build/temp.linux-x86_64-2.7/decklist.o cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++ g++ -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions build/temp.linux-x86_64-2.7/decklist_wrap.o build/temp.linux-x86_64-2.7/decklist.o -o /home/aespiel1/deck/_decklist.so
But I finish:
decklist.cpp
decklist.hpp
decklist.i
decklist.py
decklist.pyc
_decklist.so
decklist_wrap.cxx
setup.py
and a build folder with .o files for decklist_wrap and decklist .
If I run python in standby mode and switch to this directory and:
import decklist
I get:
Traceback (most recent call last): File "<pyshell#2>", line 1, in <module> import decklist ImportError: No module named decklist
Strange if I started it from the terminal, I can import decklist . But then a command like:
dl = decklist.DeckList()
gives:
Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'module' object has no attribute 'DeckList'
What am I doing wrong? I am so upset.