[bug #51338] Support for construction patterns by make functions

[Markus Elfring]

Follow-up Comment #4, bug #51338 (project make):

> You don't need to use secondary expansion inside the recipe, because you
already have access to the automatic variables like $@ there.

I thought about a need for a “second expansion” (for a moment) while it
could be implemented in the mentioned use case by another variable evaluation
(call of the make function “eval”).


> If you have a specific design in mind please post it here with explicit
examples and discussion of exactly how it would work and I'll reopen this
enhancement request.

I tried this way.

I suggest to give some make rule combinations (pairs, trios, …) another
look.
Which of them can become part of a higher level make standard library?

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