I just tried to compile Gearhead on my laptop, running 64 bit Ubuntu 12.04. But I get this error message:
bohara@bohara-laptop:~/Downloads/GH2$ ppcx64 gearhead
Free Pascal Compiler version 2.4.4-3.1 [2012/01/04] for x86_64
Copyright (c) 1993-2010 by Florian Klaempfl
Target OS: Linux for x86-64
Compiling gearhead
gearhead(1,1) Fatal: illegal character "''" ($7F)
gearhead(1,1) Fatal: Compilation aborted
Any suggestions for what to try? ppcx64 is the 64 bit version of ppc386, so I assume that's OK to use.