hbtipssl.hbp
-env:HB_TIP_OPENSSL=yes
hbtip.hbp
From the Windows button, search for "Developer Command Prompt for VS 2019" and execute it, then run this from it:
cd c:\harbour\contrib\hbtip\
c:\harbour\contrib\hbtip>c:\harbour\bin\win\msvc64\hbmk2 hbtipssl.hbp -comp=msvc64
finally rename the created hbtip.lib as hbtipssl.lib
Here you have it already built:
https://github.com/FiveTechSoft/Harbour_builder/tree/master/win64_hbtipssl