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SubjectRe: [BUGFIX PATCH v2] tools: Let O= makes handle a relative path with -C option
On Fri, 6 Mar 2020 17:12:03 -0300
Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Em Sat, Mar 07, 2020 at 03:32:58AM +0900, Masami Hiramatsu escreveu:
> > When I compiled tools/perf from top directory with the -C option,
> > the O= option didn't work correctly if I passed a relative path.
> >
> > $ make O=BUILD -C tools/perf/
> > make: Entering directory '/home/mhiramat/ksrc/linux/tools/perf'
> > BUILD: Doing 'make -j8' parallel build
> > ../scripts/Makefile.include:4: *** O=/home/mhiramat/ksrc/linux/tools/perf/BUILD does not exist. Stop.
> > make: *** [Makefile:70: all] Error 2
> > make: Leaving directory '/home/mhiramat/ksrc/linux/tools/perf'
> >
> > The O= directory existence check failed because the check
> > script ran in the build target directory instead of the
> > directory where I ran the make command.
> >
> > To fix that, once change directory to $(PWD) and check O=
> > directory, since the PWD is set to where the make command
> > runs.
>
> Tested with O=/non/relative/paths, as I always use, not to polute the
> checked out kerneo sources, and with a relative path, as fixed in this
> patch, now both works, thanks, will be in my next perf/urgent pull req
> to Ingo.
>

Thanks Arnaldo!


> - Arnaldo
>
> > Fixes: c883122acc0d ("perf tools: Let O= makes handle relative paths")
> > Reported-by: Randy Dunlap <rdunlap@infradead.org>
> > Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
> > Cc: stable@vger.kernel.org
> >
> > ---
> > Changes in V2:
> > - Fix tools/perf/Makefile because it has own O= pre-process.
> > - Use tools/perf for example.
> > - Add explicit Cc: stable@vger.kernel.org tag.
> > ---
> > tools/perf/Makefile | 2 +-
> > tools/scripts/Makefile.include | 4 ++--
> > 2 files changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/tools/perf/Makefile b/tools/perf/Makefile
> > index 7902a5681fc8..b8fc7d972be9 100644
> > --- a/tools/perf/Makefile
> > +++ b/tools/perf/Makefile
> > @@ -35,7 +35,7 @@ endif
> > # Only pass canonical directory names as the output directory:
> > #
> > ifneq ($(O),)
> > - FULL_O := $(shell readlink -f $(O) || echo $(O))
> > + FULL_O := $(shell cd $(PWD); readlink -f $(O) || echo $(O))
> > endif
> >
> > #
> > diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
> > index ded7a950dc40..6d2f3a1b2249 100644
> > --- a/tools/scripts/Makefile.include
> > +++ b/tools/scripts/Makefile.include
> > @@ -1,8 +1,8 @@
> > # SPDX-License-Identifier: GPL-2.0
> > ifneq ($(O),)
> > ifeq ($(origin O), command line)
> > - dummy := $(if $(shell test -d $(O) || echo $(O)),$(error O=$(O) does not exist),)
> > - ABSOLUTE_O := $(shell cd $(O) ; pwd)
> > + dummy := $(if $(shell cd $(PWD); test -d $(O) || echo $(O)),$(error O=$(O) does not exist),)
> > + ABSOLUTE_O := $(shell cd $(PWD); cd $(O) ; pwd)
> > OUTPUT := $(ABSOLUTE_O)/$(if $(subdir),$(subdir)/)
> > COMMAND_O := O=$(ABSOLUTE_O)
> > ifeq ($(objtree),)
> >
>
> --
>
> - Arnaldo


--
Masami Hiramatsu <mhiramat@kernel.org>

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