On Sat, Jul 29, 2023 at 08:44:32AM +0200, Thomas Weißschuh wrote: > On 2023-07-28 04:35:01+0800, Zhangjin Wu wrote: > > The sysroot install and kernel build targets are time cost, let's use > > -j<N> to parallelize them with multiple jobs. > > > > Signed-off-by: Zhangjin Wu <falcon@xxxxxxxxxxx> > > --- > > tools/testing/selftests/nolibc/Makefile | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile > > index ad2538ec5eb0..1b45c22f9a94 100644 > > --- a/tools/testing/selftests/nolibc/Makefile > > +++ b/tools/testing/selftests/nolibc/Makefile > > @@ -171,7 +171,7 @@ PHONY = sysroot/$(ARCH)/include > > sysroot/$(ARCH)/include: > > $(Q)rm -rf sysroot/$(ARCH) sysroot/sysroot > > $(QUIET_MKDIR)mkdir -p sysroot > > - $(Q)$(MAKE) -C ../../../include/nolibc ARCH=$(ARCH) OUTPUT=$(CURDIR)/sysroot/ headers_standalone > > + $(Q)$(MAKE) -j$$(nproc) -C ../../../include/nolibc ARCH=$(ARCH) OUTPUT=$(CURDIR)/sysroot/ headers_standalone > > This should already work when the users specify -j on the make command > line themselves. > I'm not a fan of force-enabling it here. Indeed, we must not do that, because some users might for instance prefer to build multiple archs in parallel and benefit from a better parallelism and now they'd end up with too many processes. Willy
