* Masahiro Yamada <masahi...@kernel.org> wrote:
> On Thu, Aug 20, 2020 at 3:35 PM Ingo Molnar <mi...@kernel.org> wrote: > > > > On every kernel build that runs --syncconfig, there's an output of the > > following line: > > > > scripts/kconfig/conf --syncconfig Kconfig > > > > This is the only non-platform build message the kbuild system emits that > > isn't > > prefixed by at least a space, or is a build warning. > > > > Run it under -s - if there's any problem it will emit messages anyway. > > > > With this change the following simple grep filter will show all build > > warnings > > and errors of a kernel build: > > > > make | grep -v '^ ' > > > > I do want to see something when syncconfig is invoked. > > I will apply this instead: > https://patchwork.kernel.org/patch/11727445/ BTW., there's another, rather spurious bug I recently triggered in kbuild. Occasionally when I Ctrl-C a kernel build on a system with a lot of CPUs, the .o.cmd file gets corrupted: mm/.pgtable-generic.o.cmd:5: *** unterminated call to function 'wildcard': missing ')'. Stop. make: *** [Makefile:1788: mm] Error 2 make: *** Waiting for unfinished jobs.... The .o.cmd file is half-finished: $(wildcard include/config/shmem.h) \ $(wildcard include/config/hugetlb/page.h) \ $(wildcard include/config/zone/device.h) \ $(wildcard include/config/dev/pagemap/ops.h) \ $(wildcard include/config/device/private.h) \ $(wildcard include/config/pci/p2pdma.h) \ $(wildcard include/config/sparsemem.h) \ $(wildcard include/config/sparsemem/vmemmap.h) \ $(wildcard include/config/numa/balancing.h) \ $(wildcard i [premature EOF] Instead of the regular rules that end in: $(wildcard include/config/memory/hotplug/sparse.h) \ mm/pgtable-generic.o: $(deps_mm/pgtable-generic.o) $(deps_mm/pgtable-generic.o): [regular EOF] Manually removing the corrupted .o.cmd dot file solves the bug. There's no reproducer other than Ctrl-C-ing large build jobs a couple of times. Thanks, Ingo
