On Tue, 22 Sep 2020 08:15:59 +0200 (CEST)
Jan Engelhardt <jeng...@inai.de> wrote:
> On Tuesday 2020-09-22 02:19, Stephen Hemminger wrote:
> >> I observe:
> >>
> >> ยป make -j8 CCOPTS=-ggdb3
> >> lib
> >> make[1]: warning: -j8 forced in submake: resetting jobserver mode.
> >> make[1]: Nothing to be done for 'all'.
> >> ip
> >> make[1]: warning: -j8 forced in submake: resetting jobserver mode.
> >> CC ipntable.o
> >>
> >> MFLAGS is a historic variable of some kind; removing it fixes the
> >> jobserver issue.
> >
> >MFLAGS is a way to pass flags from original make into the sub-make.
>
> MAKEFLAGS and MFLAGS are already exported by make (${MAKE} is magic
> methinks), so they need no explicit passing. You can check this by
> adding something like 'echo ${MAKEFLAGS}' to the lib/Makefile
> libnetlink.a target and then invoking e.g. `make -r` from the
> toplevel, and notice how -r shows up again in the submake.
For context:
https://www.gnu.org/software/make/manual/html_node/Options_002fRecursion.html
With your change does the options through the same?
My concern is that this change might break how distros do their package builds,
and cross compilation.
