OK, here is the next problem. The tool msvcmaker prints the following error messages:
$ tools/winapi/msvcmaker Global symbol "$wine_dir" requires explicit package name at tools/winapi/msvcmaker line 52. Global symbol "$wine_dir" requires explicit package name at tools/winapi/msvcmaker line 116. Global symbol "$wine_dir" requires explicit package name at tools/winapi/msvcmaker line 441. Global symbol "$wine_dir" requires explicit package name at tools/winapi/msvcmaker line 1031. Global symbol "$wine_dir" requires explicit package name at tools/winapi/msvcmaker line 1091. Global symbol "$wine_dir" requires explicit package name at tools/winapi/msvcmaker line 1141. Global symbol "$wine_dir" requires explicit package name at tools/winapi/msvcmaker line 1183. Global symbol "$wine_dir" requires explicit package name at tools/winapi/msvcmaker line 1220. Global symbol "$wine_dir" requires explicit package name at tools/winapi/msvcmaker line 1237. Execution of tools/winapi/msvcmaker aborted due to compilation errors.
My perl version used is the current one of Cygwin: v5.8.5