Free Pascal Compiler version 3.0.0 [2015/11/16] for i386
Copyright (c) 1993-2015 by Florian Klaempfl and others
Target OS: Win32 for i386
Compiling foo.pas
foo.pas(60,4) Error: Identifier not found "k2"
foo.pas(62,5) Error: Identifier not found "xx"
foo.pas(64,1) Error: Identifier not found "pollard_rho"
foo.pas(84,4) Fatal: There were 3 errors compiling module, stopping
Fatal: Compilation aborted
Error: C:\FPC\3.0.0\bin\i386-win32\ppc386.exe returned an error exitcode