On Wed, Feb 10, 2021 at 09:52:42AM -0800, Andrii Nakryiko wrote: > On Wed, Feb 10, 2021 at 9:47 AM Nathan Chancellor <nathan@xxxxxxxxxx> wrote: > > > > On Fri, Feb 05, 2021 at 01:40:20PM +0100, Jiri Olsa wrote: > > > The resolve_btfids tool is used during the kernel build, > > > so we should clean it on kernel's make clean. > > > > > > Invoking the the resolve_btfids clean as part of root > > > 'make clean'. > > > > > > Acked-by: Song Liu <songliubraving@xxxxxx> > > > Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx> > > > --- > > > Makefile | 7 ++++++- > > > 1 file changed, 6 insertions(+), 1 deletion(-) > > > > > > diff --git a/Makefile b/Makefile > > > index b0e4767735dc..159d9592b587 100644 > > > --- a/Makefile > > > +++ b/Makefile > > > @@ -1086,6 +1086,11 @@ ifdef CONFIG_STACK_VALIDATION > > > endif > > > endif > > > > > > +PHONY += resolve_btfids_clean > > > + > > > +resolve_btfids_clean: > > > + $(Q)$(MAKE) -sC $(srctree)/tools/bpf/resolve_btfids O=$(abspath $(objtree))/tools/bpf/resolve_btfids clean > > > + > > > ifdef CONFIG_BPF > > > ifdef CONFIG_DEBUG_INFO_BTF > > > ifeq ($(has_libelf),1) > > > @@ -1495,7 +1500,7 @@ vmlinuxclean: > > > $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean > > > $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) > > > > > > -clean: archclean vmlinuxclean > > > +clean: archclean vmlinuxclean resolve_btfids_clean > > > > > > # mrproper - Delete all generated files, including .config > > > # > > > -- > > > 2.26.2 > > > > > > > This breaks running distclean on a clean tree (my script just > > unconditionally runs distclean regardless of the tree state): > > > > $ make -s O=build distclean > > ../../scripts/Makefile.include:4: *** O=/home/nathan/cbl/src/linux-next/build/tools/bpf/resolve_btfids does not exist. Stop. > > > > Can't reproduce it. It works in all kinds of variants (relative and > absolute O=, clean and not clean trees, etc). Jiri, please check as > well. > Odd, this reproduces for me on a completely clean checkout of bpf-next: $ git clone --depth=1 https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/ $ cd bpf-next $ make -s O=build distclean ../../scripts/Makefile.include:4: *** O=/tmp/bpf-next/build/tools/bpf/resolve_btfids does not exist. Stop. I do not really see how this could be environment related. It seems like this comes from tools/scripts/Makefile.include, where there is no guarantee that $(O) is created before being used like in the main Makefile? Cheers, Nathan
