Why can't d link DLL

original text

module dimedll;
import core.sys.windows.windows;
import core.sys.windows.dll; //  purpose ?
import std.stdio;


mixin SimpleDllMain;

export void testFunc() {
    
    writeln("DLL Content ");
}
// With `dimedll.dll` and `dimedll.lib`

test :

//dime.d
import std.stdio;
import core.sys.windows.windows;
import std.stdio : log = writeln;

pragma(lib, "dimedll.lib");

extern void testFunc();

void main() {
    
    log(" structure ime");
    testFunc();
}

use dmd -i -run dime.d Compilation error .
Reference address
Just mark the exported content and make sure Name match ( Including module name ).
Method Is to remove extern Statement .
Unless used optlink As linker , Unwanted .def file ,( In principle, , You should use lld or ld Instead of .)