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Newsgroups: comp.lang.ada
Date: Mon, 27 Jan 2020 09:49:36 -0800 (PST)
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Subject: Re: gpr and Makefiles
From: Shark8 <onewingedshark@gmail.com>
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Xref: reader01.eternal-september.org comp.lang.ada:57964
Date: 2020-01-27T09:49:36-08:00
List-Id: <comp.lang.ada>

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;