Re: Flag --no-builtin-rules etc. just for this makefile (no flag inheritance)

[R. Diez]

> You do have to keep filtering that out for sub-makes, though.
>
> Another idea is: instead of filtering MAKEFLAGS, save it
> and restore it:
>
>   SAVED_MAKEFLAGS := $(MAKEFLAGS)
>
> Then in recursive recipes do MAKEFLAGS=$(SAVED_MAKEFLAGS) or whatever.


I tried to implement your suggestion, but I ran into the following problem.

The value of MAKEFLAGS at the beginning of my makefile is:

rRw --warn-undefined-variables

However, the value of MAKEFLAGS at the beginning of a recipe is:

rRw -j5 -Orecurse --jobserver-auth=3,4 --warn-undefined-variables

So I guess that GNU Make is injecting the jobserver flags into MAKEFLAGS before 
running each rule.

If I save the value of MAKEFLAGS at the beginning, like you suggested, and then 
use it in the recipe, I will lose the jobserver flags, right?

Thanks in advance,
  rdiez