Place the Japanese F-Zero Climax rom inside the rom folder and name it input.gba. Then, run the build.bat script if you are on windows, otherwise run build.sh.
If you are on linux/macos, you want to install the armips assembler. You can find it at : https://github.com/Kingcom/armips.git.
Normmatt - Hacking
Clank Hughes - Hacking/GFX
Guy_Perfect - Hacking
Heian - Translation