[arch-general] FreePascal doesn't see the module 'graph'

[rafael ff1]

2012/2/26 Abdourazak Osmanov <05rnan0ff at gmail.com>:
> When I compile this code:
>
> program radar;
>>
>> uses
>>     crt, graph;
>>
>> var
>>     DriverVar, ModeVar : integer;
>>
>> begin
>>         DriverVar := Detect;
>>         ModeVar := 2;
>>         InitGraph(DriverVar, ModeVar,'');
>>         SetColor(4);
>>         LineTo(100,100);
>> end.
>>
>
> I get an error message:
>
> mao at mao-note-arch Pascal $ fpc radar.pas
>> Free Pascal Compiler version 2.6.0 [2012/01/02] for x86_64
>> Copyright (c) 1993-2011 by Florian Klaempfl and others
>> Target OS: Linux for x86-64
>> Compiling radar.pas
>> Fatal: Can't find unit graph used by radar
>> Fatal: Compilation aborted
>> Error: /usr/bin/ppcx64 returned an error exitcode (normal if you did not
>> specify a source file to be compiled)
>>
>
> Why is this happening?

1) Is 'Detect' integer? I can't tell from here.

2) Shouldn't InitGraph receive a path? See "PathToDriver" in
http://www.freepascal.org/docs-html/rtl/graph/initgraph.html