Re: gpr and Makefiles

[Simon Wright <simon@pushface.org>]

Shark8 <onewingedshark@gmail.com> writes:

> On Monday, January 27, 2020 at 9:22:41 AM UTC-7, mockturtle wrote:
>> 
>> foo.ads: bar.txt
>>        convert --from=bar.txt --to=foo.ads
>> 
>> What I would like is having gprbuild checking if bar.txt is newer
>> than foo.ads; if it is, run convert and after that proceed with the
>> actual building.
>> 
>> Is this possible?
>> 
>> I also checked Gem #152
>> (https://www.adacore.com/gems/gem-152-defining-a-new-language-in-a-project-file)
>> about defining a new language inside a gpr file, but I am not sure
>> it can be a solution.
> Why not?
> Wouldn't you just use
>
> Package Compiler is
>   for Driver ("Converter") use "convert";
>   for Object_Generated ("Converter") use "False";
>   --...
> End Compiler;

The Gem seems only to be about "languages" that compile to object (.o)
files.