What are the exact steps you are taking to compile MAMEUI?
Here's how I do it...
Code:
call D:\MINGW\mingw64-w32\setenv.bat make all -j5 OSD=winui EMULATOR=MAMEUI32.exe if exist MAMEUI32.exe call MakeHelp.bat if not exist MAMEUI32.exe pause
or
Code:
call D:\MINGW\mingw64-w64\setenv.bat make all -j5 OSD=winui EMULATOR=MAMEUI64.exe if exist MAMEUI64.exe call MakeHelp.bat if not exist MAMEUI64.exe pause