Re: (b)make: Outputting a huge variable value

[RVP <rvp%SDF.ORG@localhost>]

On Fri, 17 May 2024, Edgar Fuß wrote:

> > What happens here is that the child "make -V" reads the complete Makefile
> > again, and after that, it prints the variable value.
> Oh, then it's propably useless in the pkgsrc context the question came up.

There's a trick to do this, but for it to work, compat mode must be
turned off. I'm using `-j' for this.

$ cat Makefile
X != cat /usr/src/sys/kern/*.c
.PHONY: main
main:
	@wc -c <<\EoF${.newline}$X${.newline}EoF${.newline}
$ make -j1
 4936770
$

The description for `-j' says:

	When compatibility mode is off, all commands associated with a
	target are executed in a single shell invocation as opposed to
	the traditional one shell invocation per line.

So, in non-compat mode, make runs the shell with `-s' instead of `-c' and
therefore, here-docs will work.

-RVP