Install D:

sudo apt-get install dmd

sudo apt-get install gdc

dmd main.d -L-ldl -ofmaind

gdc main.d -ldl -o maind

./maind

If the install command above doesn't work fo you, you can go to the D download site and get DMD from there.

import std.stdio;
import core.sys.posix.dlfcn;

// Convenient aliases
alias int function(int, int) ADD;
alias void function(const char *) PRINTME;

int main()
{
    // Load library
  auto lib = dlopen("./libhello.so".ptr, RTLD_LAZY);

    // Verify success
  if (!(lib is null))
  {
      // Locate add and, if found, call it
    auto Add = cast(ADD)dlsym(lib, "add");
    if (Add is null)
      writeln("Can't find add.");
    else
      writeln("The result is: ", Add(1, 2));

      // Locate printme and, if found, call it
    auto PrintMe = cast(PRINTME)dlsym(lib, "printme");
    if (PrintMe is null)
      writeln("Can't find printme.");
    else
      PrintMe("Hello from D!");

      // Clean up
    dlclose(lib);
  } 
  else 
  {
    writeln("Can't load ./libhello.so");
    return 1;
  } 
  return 0;
}

The result is: 3
Hello from library: Hello from D!