midl /sstub stub_file_name
midl /sstub my_sstub.c filename.idl
The /sstub switch specifies the name of the server stub file for an RPC interface. The specified filename replaces the default filename. By default, the filename is obtained by adding _S.C to the name of the IDL file. This switch does not affect OLE interfaces.
When you are importing files, the specified filename applies to only one stub file — the stub file that corresponds to the IDL file specified on the command line.
If stub_file_name does not include an explicit path, the file is written to the current directory or the directory specified by the /out switch. An explicit path in stub_file_name overrides the /out switch specification.
The /server none switch takes precedence over the /sstub switch.
General MIDL Command-line Syntax, /cstub, /header, /out