Option -Fd: Write Import Definitions
Option -Fd makes JWasm write import definitions in a format understood by Open Watcom's Wlink and JWlink. Such definitions will tell the linker how to resolve the external reference; no import library is needed. This option is only useful in conjunction with OPTION DLLIMPORT (chapter 3.12). Syntax is:- -Fd[=file_name]
If JWlink is used, the <file_name> argument may be omitted. Then JWasm will write the import definitions directly into the object module's linker directive section (section ".drectve"). This works for output formats COFF and ELF only. See sample Win32_7 how to use JWasm and JWlink to create a Windows binary without import libs.