Linking D DLL to C

[Kirk McDonald]

I am about 50% certain I am missing something obvious. I'm playing with 
DLLs in D, and following the example here:

http://digitalmars.com/d/dll.html

The end result of this tutorial are some D source files:

dll.d
mydll.d
mydll2.d
test.d

and also a .def file (mydll.def), a .lib file (mydll.lib), and of course 
the .dll (mydll.dll). The command

C:>dmd test.d mydll.lib

goes fine, and the resultant executable works fine.

Fine.

Now I want to call this DLL from a C program. First, I re-wrote mydll.d 
and mydll2.d and recompiled the DLL and the test executable:

[mydll.d]
export extern(C) void dllprint();

[mydll2.d]
module mydll;
export extern(C)
void dllprint() { printf("hello dll world\n"); }

The original .exe still works. Fine. Then I wrote a C header file and a 
test2.c:

[mydll.h]
__declspec(dllimport) void dllprint(void);

[test2.c]
#include "mydll.h"

int main(int argc, char* argv[]) {
     dllprint();
     return 0;
}

This does not work. I am using MinGW 3.4.2. The following command works:

C:>gcc -c test2.c

test2.o is generated without issue. However:

C:>gcc -L. -lmydll test2.o
./mydll.dll: file not recognized: File format not recognized
collect2: ld returned 1 exit status

The linker fails. Again, I'm pretty sure I'm missing something obvious. 
Any help?

-Kirk McDonald