From: Jonathan Nieder <jrnieder@gmail.com>
Date: Fri, 03 Aug 2018 06:21:44 GMT
Subject: Re: [PoC] coccinelle: make Coccinelle-related make targets more fine-grained
Message-ID: <20180803062144.GB237521@aiede.svl.corp.google.com>
In-Reply-To: <20180802183145.GA23690@sigill.intra.peff.net>

Hi,

Jeff King wrote:
> On Thu, Aug 02, 2018 at 02:01:55PM -0400, Jeff King wrote:

>> I suspect if we go with the one-spatch-per-source route, though, that we
>> could do this just with regular make rules.
>
> Yeah, it's pretty straightforward:
> 
> diff --git a/Makefile b/Makefile
> index d616c0412..86fdcf567 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -2674,15 +2674,17 @@ COCCI_SOURCES = $(filter-out sha1collisiondetection/%,$(C_SOURCES))
>  else
>  COCCI_SOURCES = $(filter-out sha1dc/%,$(C_SOURCES))
>  endif
> +COCCI_COMBINED = contrib/coccinelle/combined.cocci

I like this approach.

[...]
> I guess you could even replace "COCCI_COMBINED" with "COCCI_PATCH" in
> most of the targets, and that would let people do individual:
> 
>   make COCCI_PATCH=contrib/coccinelle/foo.cocci coccicheck

The issue here is that the dependencies for foo.cocci become
unreliable, so I'd rather have a separate target for that (e.g.
depending on FORCE) if we go that way.

Thanks,
Jonathan