Import Error on boost python hello program

Question

include

using namespace boost::python;

struct World{
    void set(std::string msg) { this->msg = msg; }
    std::string greet() { return msg; }
    st         


        

Answer 1

same as other post here

g++ -c -fPIC hello.cpp -o hello.o
g++ -shared -Wl,-soname,hello.so -o hello.so  hello.o -lpython2.6 -lboost_python

But i want to stress the importance of the position of "-lpython2.6 -lboost_python". If you put them in front of input files (hello.o), they will be somehow ignored (not linked to the final hello.so). This is at least true for g++ (Ubuntu/Linaro 4.6.3-1ubuntu5).

To be simple, http://ubuntuforums.org/showthread.php?t=496287 suggested:

  g++ <.cpp or .o file(s)> [LDFLAGS] [LIBS] -o [appname]

Answer 2

I had the same issue and it turned out that I was missing a constructor on my class.

Answer 3

Oh, I just saw this post:

help needed with boost python

and problem solved

Answer 4

Solved this via "No such file or directory" error with Boost Python

g++ -c -fPIC hello.cpp -o hello.o
g++ -shared -Wl,-soname,hello.so -o hello.so  hello.o -lpython2.6 -lboost_python

did the trick for me. I hope this is as clear as possible as i was struggling with this for about half an hour now ;)