@daxtsu basically did in the other thread.
1. Open command prompt/terminal window
2.
Code:
python inject_gba.py -z alldata.bin rom.gba
-z if you have The Minish Cap as your base game.
-m if you have Mario as your base game.
It will spit out a rom.adb file.
3. Put rom.adb onto your SD card and rename it alldata.bin
SD:/wiiu/games/<gamename>/content/alldata.bin
4. Run the game with Loadiine
@daxtsu, can you specify which "Mario," and is there a reason to assume one might provide more compatibility than the other?