OpenEuphoria

So I have been testing some methods for rebuilding wxEuphoria. Trying to link the Euphoria library (eu.a) into my DLL, the linker cannot find a reference to NewDouble.

I've distilled my problem down to this simple code. What am I doing wrong?

#include <stdint.h> 
#include "euphoria.h" 
 
object box_int( intptr_t x ) 
{ 
    if(x > NOVALUE && x < MAXINT) 
        return (object)x; 
    else 
        return (object)NewDouble((double)x); 
}	 

$ gcc -c test.c -o test.o -IC:\Euphoria\include 
$ gcc -shared -o test.dll C:\Euphoria\bin\eu.a test.o 
test.o:test.c:(.text+0x24): undefined reference to `NewDouble' 
collect2.exe: error: ld returned 1 exit status 
make: *** [test.dll] Error 1 

-Greg