[Mono-list] Strange error with a simple pinvoke and g++ 4.0

[Antonio Martínez Alvarez]

Hello,

I don't understand the DllNotFound exception when I compile an run this
little program which uses pinvoke.

---------<file mylib2.cc>----------
#include <iostream>
using namespace std;
extern "C" int  diesther ()
{
        cout << " Esther " << endl;
        return 7;
}
---------</file mylib2.cc>----------


---------------<file test_mylib2.cs>-------
using System;
using System.Runtime.InteropServices;

namespace kkkkk
{
  public class Prueba
  {
        [DllImport("liboctivate")]
        private static extern int diesther ();

        public static void Main()
        {
                Console.Write("Hola");
                diesther ();
        }
  }
}
---------------</file test_mylib2.cs>-------

I follow these commands to compile and run ...


g++ -fpic -c -I/usr/include/octave-2.9.3 mylib2.cc
g++ -shared -o liboctivate.so mylib2.o
rm /usr/lib/liboctivate.so
cp liboctivate.so /usr/lib
ldconfig -n /usr/lib
mcs test_mylib2.cs
mono test_mylib2.exe


2 usefuls outputs to debug the/my error:
#ldconfig -p|fgrep liboctivate
        liboctivate.so (libc6) => /usr/lib/liboctivate.so
#cat /usr/lib/liboctivate.so| strings | grep diesther
diesther
_GLOBAL__I_diesther
diesther


I have probed with and without extern "C" and with gcc instead of g++ to
creat the liboctivate.so library.

I have:
 gcc and g++ version     4.0.1 (Debian 4.0.1-2)
 Linux kernel version    2.6.11-1-686
 Mono version version    1.1.8.2
 MCS version             1.1.8.0



This is the result ... Any ideas ?
----------<output>---------------
Hola
Unhandled Exception: System.DllNotFoundException: liboctivate
in (wrapper managed-to-native) kkkkk.Prueba:diesther ()
in <0x00012> kkkkk.Prueba:Main ()
----------</output>---------------


Thanks in advance !!
---
Antonio Martinez