Hi Masahiro, On Wed, 3 Oct 2018 13:31:54 +0900 Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> wrote: > > On Wed, Oct 3, 2018 at 12:51 PM Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote: > > > > I don't know if that has anything to changes in the kbuild system, but > > since Tuesday, I have been getting random build errors that go away after > > I remove the object directory and build again. > > I have no idea. I did not expect a fast/simple answer :-) > Is it fine if you use kbuild tree from the last week? I did not see this in next-20180928 or before i.e. it has only happened yesterday and today. > I added 4 kbuild patches this week, but they look irrelevant. Yeah, that was my feeling as well. > > The latest example is this: > > > > include/linux/kconfig.h: file not recognized: file format not recognized > > make[2]: *** [scripts/Makefile.build:492: crypto/crypto_user.o] Error 1 > > make[1]: *** [Makefile:1057: crypto] Error 2 > > make: *** [Makefile:152: sub-make] Error 2 > > Command exited with non-zero status 2 > > > > It is always complaining about a .h file ... > > > > Makefile:152 is the MAKE lien below: > > > > # Invoke a second make in the output directory, passing relevant variables > > sub-make: > > $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ > > -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) > > > > Makefile:1057 is the MAKE line below: > > > > PHONY += $(vmlinux-dirs) > > $(vmlinux-dirs): prepare scripts > > $(Q)$(MAKE) $(build)=$@ need-builtin=1 > > > > scripts/Makefile.build:492 is the if_changed line below: > > > > $(multi-used-m): FORCE > > $(call if_changed,link_multi-m) > > @{ echo $(@:.o=.ko); echo $(filter-out FORCE,$^); \ > > $(cmd_undef_syms); } > $(MODVERDIR)/$(@F:.o=.mod) > > $(call multi_depend, $(multi-used-m), .o, -objs -y -m) > > > > Not sure what else I can tell you. > > Does this happen only when building a module? I don't know, sorry, I build with -s and -j80, so it is hard to tell what it is currently up to. > Can you provide a procedure > to reproduce this? Not really. Each day, I merge all the trees, but between each merge I do 3 builds (arm, powerpc and x86_64) and of the 100+ builds, yesterday 2 failed and so far today 2 have failed. It is not even the same build each time, or after the same merges. The report above was from the arm build, a while later (a few merges later) the x86_64 build failed - complaining about a different .h file. -- Cheers, Stephen Rothwell
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