Re: bash parallel build: make[1]: warning: -j16 forced in submake: resetting jobserver mode.

[Chet Ramey]

On 4/21/24 7:21 PM, Dan Shelton wrote:
> On Sat, 13 Apr 2024 at 17:27, Chet Ramey <chet.ramey@case.edu> wrote:
> > On 4/13/24 12:40 AM, Cedric Blancher wrote:
> > > Good morning!
> > >
> > > Building bash HEAD on Cygwin 3.5.3 and Debian Linux 11  in make
> > > parallel mode issues a warning, which looks like a Makefile bug:
> > > $ make -h 16
> > > ...
> > > make[1]: warning: -j16 forced in submake: resetting jobserver mode.
> > > ...
> > > Can this be fixed please?
> >
> > That's a message from `make'. What would you like to fix? It gets passed
> > down to subdirectory makes as part of ${MFLAGS}, and the parent and child
> > make instances cooperate to limit the number of parallel make processes.
>
> Passing -j to submakes ist just wrong. All submakes and the parent
> should be part of ONE GNU make jobserver.

I might buy that if make didn't put the -j option into MAKEFLAGS/MFLAGS.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

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