Re: "make -jN" requires mechanical changes to a Makefile

[Henrik Carlqvist]

On Mon, 13 May 2019 00:05:59 +0200
Bruno Haible <address@hidden> wrote:

> Howard Chu wrote:
> > >> Example with one rule creating 4 files:
> > >>
> > >> all : copy1 
> > >>
> > >> copy1: Makefile
> > >>         install -c -m 644 Makefile copy1
> > >>         install -c -m 644 Makefile copy2
> > >>         install -c -m 644 Makefile copy3
> > >>         install -c -m 644 Makefile copy4
> > > 
> > > I think the "representative" file should be copy4 here, because it's
> > > the one that gets created last.
> > 
> > That sort of thing is only true in serial make, you can't rely on it
> > in parallel make.
> 
> The sequence of lines of the recipe of a rule gets executed in order,
> even in parallel make, no?

Yes, they will be run in sequence even with parallel make and copy4 might
be a better known target than copy1.

regards Henrik