Re: Usefulness of make -t

Alejandro Colomar
2023-04-02T13:16:54Z

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On 4/2/23 14:20, Alejandro Colomar wrote:
> Hi Paul,
>
> Yesterday I found another use of make's -t flag: It helps make sure
> that the logic in the Makefile is correct. You could run the target
> without -t, but then you risk seeing warnings and errors from the
> commands run by the target before make's own ones, which would hide
> Makefile problems.
>
> If you run `make -kstj [target(s)]` after modifying a Makefile, it
> will show only and all^Wmost problems in the Makefile itself. It
> could be especially useful with 4.4's --shuffle, although I don't
> have it yet in Debian Sid :(. I should build from source and try it.
>
> I'll start using that as a rule to check changes to Makefiles, and
> hopefully will avoid introducing bugs that I need to fix in the next
> commit :)
>
> <https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/commit/?id=5bf82f50cf02ded2403666d6c1ee2878b8bd602e>

Running this a few times works like a charm:

$ make -kstj --shuffle >/dev/null; make clean >/dev/null

Very recommended :)

>
> Cheers,
> Alex
>
>

--
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