D CGI test: linux.so.2: bad ELF interpreter: No such file or directory

[Nick Sabalausky]

I've made a little test CGI app:

import std.conv;
import std.stdio;

void main()
{
 auto content = "<b><i>Hello world</i></b>";
 auto headers =
`HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Content-Length: `~to!string(content.length);

 while(readln().length > 1) {}

 writeln(headers);
 writeln();
 writeln(content);
}

Works on Windows command line and through IIS. And it works on my Kubuntu 
10.6 command line. But if I copy the executable from my Kubuntu box to my 
web host's Debian server: Running it through Apache gives me a 500, and 
running it directly with ssh gives me:

linux.so.2: bad ELF interpreter: No such file or directory

I assume that error message is the cause of the 500 (can't tell for sure 
because the 500 isn't even showing up in my Apache error logs). But I'm not 
enough of a linux expert to have the slightest clue what that error message 
is all about. I don't need to actually compile it *on* the server do I? I 
would have thought that all (or at least most) Linux distros used the same 
executable format - especially (K)Ubuntu and Debian.