ERROR HBMK2

[JoséQuintas]

if -m do not solve duplicated, then you need check the files, may be files are duplicated on hbp, may be functions are duplicated inside source code.
linker shows the 2 files where functions are found.

[JoséQuintas]

hbmk2 only call the tools, including harbour.exe, using parameters on hbp

-m is a harbour parameter, same on Clipper and XHarbour

[Henry Herrera]

Thank you very much, I finally managed to solve the problem.
Minigui Extended does not include the CONTRIB folder

C:\MiniGUI\Harbour\contrib

Add this lines
hbct.hbc
hbnf.hbc
xhb.hbc

Install Harbor copy the contrib folder to the minigui folder and it worked.
Thank you Jose Quintas for following up on my case.

[JoséQuintas]

Unfortunatelly minigui extended modify harbour files.

See on image, hbmk2 shows the possible solution, using harbour original files.