Re: [fpc-pascal] Generic with inheritance - fpc 3.0

2015-11-30 Thread Michael Van Canneyt 



On Mon, 30 Nov 2015, Sven Barth wrote:


Am 30.11.2015 15:55 schrieb "Torsten Bonde Christiansen" :


Hi.

The docs for 3.0 does not directly mention generics and inheriting from

another generic class, but I tried out with the code below.

It compiled, ran and worked fine but since the docs do not explicit

mention it as a posibility I am a little reluctant to go forward using this
strategy if is not meant to work...

Yes, that's supposed to work :)


I will add this to the documentation.

Michael.
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[fpc-pascal] Generic with inheritance - fpc 3.0

2015-11-30 Thread Torsten Bonde Christiansen 

Hi.

The docs for 3.0 does not directly mention generics and inheriting from 
another generic class, but I tried out with the code below.
It compiled, ran and worked fine but since the docs do not explicit 
mention it as a posibility I am a little reluctant to go forward using 
this strategy if is not meant to work...


(ps. i know this is incomplete code, but it should illustrate my point)type

type
  { TMyType }

  generic TMyType = class
  private
Item: T;
  public
constructor Create; virtual;
  end;

  { TMyDerivedType }

  generic TMyDerivedType = class(specialize TMyType)
  private
Count: Integer;
  public
constructor Create; override;
  end;

  TMyIntClass = specialize TMyDerivedType;

[...snipped both Create implementations...]

var
  IC: TMyIntClass;

begin
  M := TMyIntClass.Create();
  M.Item := 20;
  M.Count := 2;
  M.Free;
end;




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Re: [fpc-pascal] Generic with inheritance - fpc 3.0

2015-11-30 Thread Sven Barth 
Am 30.11.2015 15:55 schrieb "Torsten Bonde Christiansen" :
>
> Hi.
>
> The docs for 3.0 does not directly mention generics and inheriting from
another generic class, but I tried out with the code below.
> It compiled, ran and worked fine but since the docs do not explicit
mention it as a posibility I am a little reluctant to go forward using this
strategy if is not meant to work...

Yes, that's supposed to work :)

Regards,
Sven
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[fpc-pascal] Beautifier for freepascal

2015-11-30 Thread G.W. Herbold 
I am  happy owner of an old Version OREGON PASCAL Compiler (running under Unix 
68...), who has also a splendid Beautifier included.

With this excellent tool is it possible to get a very clear output of the  
printed .pas Programme   
Especially are the begin and end signs in such  a manner arranged so that 
errors can be very easily  found.

Is there any plan to create such a very helpful tool???

By the way the price for a.m Compiler+ Beautifier was ca.5000.- DM in 1986!
Kind regards G.W.Herbold
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Re: [fpc-pascal] Beautifier for freepascal

2015-11-30 Thread Jonas Maebe 

G.W. Herbold wrote:

Is there any plan to create such a very helpful tool???


FPC comes with the "ptop" tool that can be used to format/beatify your 
code. The Lazarus IDE (http://www.lazarus-ide.org ) also comes with a 
built-in code formatter.



Jonas

PS: please mention in the mails you send that you are not subscribed, so 
people replying know that they have to CC you. While it happens 
automatically for the direct replies since you added a Reply-To header, 
that's not the case for replies further down the thread.

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Re: [fpc-pascal] Building kernel modules using fpc (for fun)

2015-11-30 Thread Lukasz Sokol 
Hello Paul,

On 28/11/15 21:42, Paul Breneman wrote:
> On 01/23/2011 08:15 AM, Lukasz Sokol wrote:
>> Lukasz Sokol  writes:
>>
>> I decided to put the result of my fiddling back onto the wiki
>> http://wiki.freepascal.org/linux/kernel/module_development  as the pastebin
>> seems to have disappeared mysteriously.
>>
>> Enjoy!
>>
>> Lukasz
> 
> I couldn't find anything but the above wiki page which is almost 5 years old. 
>  I might want to make an example for this wiki page:
>   http://wiki.freepascal.org/Small_Virtual_Machines
> 
> Any suggestions or links?
> 

Wow... it's been years since I did anything in this area.

All I ever tried or knew, and the example module using printk, is only on that 
one page.

Contributors are welcome...

(I never had communicated anything with the original author, Mazen Neifer,
 if he's still around - which I think so - he could link / keyword you more, I 
suppose)

> Regards,
> Paul
> www.ControlPascal.com

Lukasz

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Re: [fpc-pascal] FPC 3.0.0-rc1 release

2015-11-30 Thread Mark Morgan Lloyd 

Martin Schreiber wrote:

In my Raspbian RPi 1 model B rev2 I installed FPC 2.6.0 by 
apt-get install fpc

Then I extracted fpc_eabihf_3_0_1.tar.gz to /home/pi/fpc.
cd to the svn fixes_3_0 checkout,
"
make PP=/home/pi/fpc/3_0/eabihf/lib/fpc/3.0.1/ppcarm OVERRIDEVERSIONCHECK=1 
all

"


Thought a status report might be useful here. Using Raspbian 4.1 
"Jessie" dated 2015-11-21 from 
https://www.raspberrypi.org/downloads/raspbian/ I find fpc_eabihf_3_0_1 
from http://sourceforge.net/projects/mseide-msegui/files/fpcarm/ 
installs and runs with no further prerequisites, and is able to build 
the standard 3.0.0 sources. There are some minor complaints that 
Subversion is missing, but that can be trivially fixed.


The new Jessie "Lite" similarly runs 3.0.1 and builds 3.0.0, there are 
no missing prerequisites so it is not necessary to start off at 2.6.x.


On "full fat" Jessie, Lazarus 1.4.4 compiles but requires libgtk2.0-dev 
as a prerequisite. The result doesn't run reliably but this is a Jessie 
issue which I believe is being addressed. Adding libqt4pas-dev and 
building Lazarus for Qt results in something that works fine.


I have not tried building Lazarus on Jessie Lite, since I see it as 
mainly being useful for embedded systems based on the original Rpi or 
the new RPi Zero. I don't anticipate significant problems other than 
caused by limited memory (Lazarus requires at least 512Mb RAM+swap to 
build).


Using standard RPi2 Debian (i.e. not Raspbian) from 
http://sjoerd.luon.net/posts/2015/02/debian-jessie-on-rpi2/ with the 
addition of a fairly standard collection of packages using tasksel 
followed by the build-essential, gdb and subversion packages runs 3.0.1 
and builds 3.0.0 in essentially the same way as is described above.


On standard RPi2 Debian, FPC 3.0.0 fails to build Lazarus 1.4.4 with 
errors like


paswstring.pas(425,46) Error: Incompatible types: got "procedure(PChar;var UnicodeString;LongInt);StdCall>" expected 
"TUnicodeStringManager.procedure(PChar;Word;var UnicodeString;LongInt);StdCall>"

paswstring.pas(439) Fatal: There were 4 errors compiling module, stopping
Fatal: Compilation aborted
Makefile:2276: recipe for target 'lazutils.ppu' failed

I'm not intending to pursue this at the moment, since I've hacked a lot 
of stuff onto the top of the supplied "lean and mean" distro ("Adde 
parvum parvo magnus acervus erit") and my guess is that the Unicode 
stuff is inadequately configured probably impacting on FPC. I mention it 
here entirely as a "heads up" for anybody attempting a similar combination.


In all of the above cases, /etc/fpc.cfg should contain a line

-Fl/usr/lib/gcc/arm-linux-gnueabihf/4.9

--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]
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