Thank you for your response! Hopefully I've done it right. Now when everything is within the same folder, and I execute: dmd test_d_client.d -L. (so I'm telling to look for libs in current dir) Response is now different: ld: in ., can't map file, errno=22 collect2: ld returned 1 exit status --- errorlevel 1 What else could be done here to resolve it?