[C++-sig] Question about using IT++ in boost.python

[Jim Bosch]

On 09/07/2010 01:25 PM, Junwei Zhang wrote:
> Hi,
>
> I am now considering using boost.python to integrate some IT++(C++
> scientific library)
> codes to python.
> But when  I do some simple example
> to wrapper this func
> int vfunc(int n)
> {
>      vec a = linspace(0,n,10); // already include IT++ and using its namespace
>      vec b= linspace(0,2*n,10);//
>      std::cout<<a<<'\n'<<b<<'\n';
>      return a*b;
>
>
>
> }
>
>   def("vfunc", vfunc);
>
> It compiles but when import the module
> there is error
> raceback (most recent call last):
>    File "<stdin>", line 1, in<module>
> ImportError: ./hello.so: undefined symbol: _ZN4itpp8linspaceEddi
>
> any suggestion is appreciate!!
>
>

It looks like you need to link your Python module (it's a shared 
library) against the IT++ shared library.

Jim Bosch