Metaprogramming Make (was: Static pattern rules with more than one '%')

[Alejandro Colomar]

Hi Paul,

On 2023-08-31 02:42, Paul Smith wrote:
> On Thu, 2023-08-31 at 00:08 +0200, Alejandro Colomar wrote:
>> I ended up using $(foreach ... $(eval ...)).  I didn't know about
>> $(eval) before reading Paul's troubleshooting guide, and it was mind
>> opening.  It solves a limitation I thought GNU Make had but really
>> hadn't.  :)
> 
> You might want to read this set of blog posts; start with the bottom
> one as it was posted first.
> 
> https://make.mad-scientist.net/category/metaprogramming/

Sure :)

I found a bug there.  In chapter V, there's this code:

ifeq (,$(filter clean clean-%,$(MAKECMDGOALS)))
  -include rules.mk
endif


I believe you meant to use $(filter-out ...).

BTW, I found Paul's First Rule (which I had been trying to quote a few times
but didn't find where I had read that in the past) thanks to this.  :-)

Cheers,
Alex

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