compiler option for $J directive

[Free Pascal - General mailing list]

Hi,

Is there any FPC command line option for writable constanst directive {$J} or {$WRITEABLECONST} ? 

Since I knew this directive, I always set it to {$J-} (because {$J+} is ridiculous). However, sometimes I forget to put it in to my source code. So, I'd like to put it in to a batch script that calls fpc with all the required compiler settings for all my programs. Unfortunately, I haven't found compiler option for this directive.

Any help is appreciated. Thank you.

Regards,

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Am 08.10.2017 06:39 schrieb "Mr Bee via fpc-pascal" <[hidden email]>:
>
> Hi,
>
> Is there any FPC command line option for writable constanst directive {$J} or {$WRITEABLECONST} ? 

No, there is not.

Regards,
Sven

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[Michalis Kamburelis-3]

2017-10-08 9:03 GMT+02:00 Sven Barth via fpc-pascal
<[hidden email]>:

> Am 08.10.2017 06:39 schrieb "Mr Bee via fpc-pascal"
> <[hidden email]>:
>>
>> Hi,
>>
>> Is there any FPC command line option for writable constanst directive {$J}
>> or {$WRITEABLECONST} ?
>
> No, there is not.
>

There is my old feature request about it
https://bugs.freepascal.org/view.php?id=30344 :) You can monitor it.

Regards,
Michalis
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[Marcos Douglas B. Santos]

On Sun, Oct 8, 2017 at 1:38 AM, Mr Bee via fpc-pascal
<[hidden email]> wrote:

> Hi,
>
> Is there any FPC command line option for writable constanst directive {$J}
> or {$WRITEABLECONST} ?
>
> Since I knew this directive, I always set it to {$J-} (because {$J+} is
> ridiculous). However, sometimes I forget to put it in to my source code. So,
> I'd like to put it in to a batch script that calls fpc with all the required
> compiler settings for all my programs. Unfortunately, I haven't found
> compiler option for this directive.
>
> Any help is appreciated. Thank you.

Most developers are using single .inc file that contains all
directives for the whole project.
You only need to remember to include this file in all units of your projects.

Regards,
Marcos Douglas
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[Free Pascal - General mailing list]

> There is my old feature request about it
> https://bugs.freepascal.org/view.php?id=30344 :) You can monitor it.

No one seems to care to implement it, so if you badly need it:  sj.patch
<http://free-pascal-general.1045716.n5.nabble.com/file/t111899/sj.patch>  
Apply in compiler directory (please checkout r37430 at least), I only svn
diff there, not in the top level directory (I have modifications to certain
packages).



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Am 08.10.2017 22:24 schrieb "leledumbo via fpc-pascal" <[hidden email]>:
>
> > There is my old feature request about it
> > https://bugs.freepascal.org/view.php?id=30344 :) You can monitor it.
>
> No one seems to care to implement it, so if you badly need it:  sj.patch
> <http://free-pascal-general.1045716.n5.nabble.com/file/t111899/sj.patch>
> Apply in compiler directory (please checkout r37430 at least), I only svn
> diff there, not in the top level directory (I have modifications to certain
> packages).
>

Applied in r37437. Thank you for the patch.

Regards,
Sven

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[Free Pascal - General mailing list]

Thank you, both to Leledumbo and Sven. Will this patch be available in the next FPC v.3.0.4 release?

Pada Selasa, 10 Oktober 2017 04.44.44 WIB, Sven Barth via fpc-pascal <[hidden email]> menulis:

Am 08.10.2017 22:24 schrieb "leledumbo via fpc-pascal" <[hidden email]>:
>
> > There is my old feature request about it
> > https://bugs.freepascal.org/view.php?id=30344 :) You can monitor it.
>
> No one seems to care to implement it, so if you badly need it:  sj.patch
> <http://free-pascal-general.1045716.n5.nabble.com/file/t111899/sj.patch>
> Apply in compiler directory (please checkout r37430 at least), I only svn
> diff there, not in the top level directory (I have modifications to certain
> packages).
>

Applied in r37437. Thank you for the patch.

Regards,
Sven

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[Free Pascal - General mailing list]

2017-10-08 23:17 GMT+07:00 Marcos Douglas B. Santos <[hidden email]>:

Most developers are using single .inc file that contains all
directives for the whole project.

Well, I don't like such approach. I prefer using my own shell script that I can configure for many purposes and conditions such as build release, build debug, build test, build deploy, etc.. which each has different compiler setting with custom before/after action..

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[Marco van de Voort]

In our previous episode, Mr Bee via fpc-pascal said:
> Thank you, both to Leledumbo and Sven. Will this patch be available in the next FPC v.3.0.4 release?

Since it is already largely uploaded, no. We are only waiting on some
targets.
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[pascalX]

On 08/10/17 21:24, leledumbo via fpc-pascal wrote:
>> There is my old feature request about it
>> https://bugs.freepascal.org/view.php?id=30344 :) You can monitor it.
>
> No one seems to care to implement it, so if you badly need it:  sj.patch
> <http://free-pascal-general.1045716.n5.nabble.com/file/t111899/sj.patch>
> Apply in compiler directory (please checkout r37430 at least), I only svn
> diff there, not in the top level directory (I have modifications to certain
> packages).
>

Now a patch has been integrated for this , perhaps it could be added to
Lazarus  Project Options | Compiler Options | Parsing

BTW why would anyone want
{$WRITEABLECONST ON}

writable constants is an oxymoron and goes against the whole philosophy
of strict types which is central to Pascal.


:?

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[Juha Manninen]

On Tue, Oct 10, 2017 at 9:33 AM,  <[hidden email]> wrote:
> Now a patch has been integrated for this , perhaps it could be added to
> Lazarus  Project Options | Compiler Options | Parsing

Patches are welcome also for that.
The option must be either hidden for compiler versions that do not
support it, or there must be a clear note / hint about it.

Juha
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Am 10.10.2017 08:49 schrieb <[hidden email]>:
> BTW why would anyone want
> {$WRITEABLECONST ON}
>
> writable constants is an oxymoron and goes against the whole philosophy of strict types which is central to Pascal.

They were used mainly back at TP times to have procedure local static variables (cause that is how they behave as inside procedures).

Regards,
Sven

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2017-10-10 13:28 GMT+07:00 Marco van de Voort <[hidden email]>:

Since it is already largely uploaded, no. We are only waiting on some
targets.

I thought such a minor fix that don't break any codes could be included. 

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2017-10-10 16:21 GMT+07:00 Sven Barth via fpc-pascal <[hidden email]>:

They were used mainly back at TP times to have procedure local static variables (cause that is how they behave as inside procedures).

Can we make the {$J-} as default in fpc and objfpc mode for the next major release?

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[Christo Crause]

>> They were used mainly back at TP times to have procedure local static variables (cause that is how they behave as inside procedures).
>
> Can we make the {$J-} as default in fpc and objfpc mode for the next major release?

+1

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Am 11.10.2017 07:00 schrieb "Mr Bee via fpc-pascal" <[hidden email]>:
>
> 2017-10-10 16:21 GMT+07:00 Sven Barth via fpc-pascal <[hidden email]>:
>>
>> They were used mainly back at TP times to have procedure local static variables (cause that is how they behave as inside procedures).
>
> Can we make the {$J-} as default in fpc and objfpc mode for the next major release?

The default of $J will change in *no* existing mode as that will break backwards compatibility. It doesn't matter whether it's a major release or not.

Regards,
Sven

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Am 11.10.2017 05:12 schrieb "Mr Bee via fpc-pascal" <[hidden email]>:
>
> 2017-10-10 13:28 GMT+07:00 Marco van de Voort <marcov@stack..nl>:
>>
>>
>> Since it is already largely uploaded, no. We are only waiting on some
>> targets.
>
>
> I thought such a minor fix that don't break any codes could be included. 

It doesn't matter whether it's minor. Building has already started and we definitely won't start that again for something like this.

Regards,
Sven

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[Tomas Hajny-2]

On Tue, October 10, 2017 11:21, Sven Barth via fpc-pascal wrote:
> Am 10.10.2017 08:49 schrieb <[hidden email]>:
>> BTW why would anyone want
>> {$WRITEABLECONST ON}
>>
>> writable constants is an oxymoron and goes against the whole philosophy
> of strict types which is central to Pascal.
>
> They were used mainly back at TP times to have procedure local static
> variables (cause that is how they behave as inside procedures).

Just adding to what has been mentioned previously - they were the only
possibility for variables initialized at compile time at that time. That's
how mode FPC started as well - possilibity of specifying the initial value
for a "var" was added much much later.

Tomas


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