Download Game Boy Advance
The latest release version is 3.0.0.
Download native compiler
There is no native compiler available for the Game Boy Advance. You have to use a cross-compiler.
Download cross-compiler running on another host
This cross-compiler runs on another host and needs the corresponding native compiler as a prerequisite.
arm-gba-fpc-3.0.0.i386-win32.zip (52.8 MB)
Contains a zip file with the win32 to arm-gba cross-compiler. Extract the zip into your fpc directory created by the native Win32 compiler (31.4 MB). See the included readme file for further instructions.