linux-kernel - Re: [PATCH 2/9] perf build: Pass O option to Makefile.perf in build-test

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Date:	Thu, 14 Jan 2016 15:37:28 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	"Wangnan (F)" <wangnan0@...wei.com>, linux-kernel@...r.kernel.org,
	pi3orama@....com, lizefan@...wei.com, Jiri Olsa <jolsa@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH 2/9] perf build: Pass O option to Makefile.perf in
 build-test

On Thu, Jan 14, 2016 at 11:28:23AM -0300, Arnaldo Carvalho de Melo wrote:
> Em Thu, Jan 14, 2016 at 05:56:06PM +0800, Wangnan (F) escreveu:
> > 
> > 
> > On 2016/1/14 17:32, Jiri Olsa wrote:
> > >On Wed, Jan 13, 2016 at 12:17:15PM +0000, Wang Nan wrote:
> > >>Doesn't like tools/perf/Makefile, tools/perf/Makefile.perf obey 'O'
> > >>option when it is passed through cmdline only, because of code in
> > >>tools/scripts/Makefile.include:
> > >>
> > >>  ifneq ($(O),)
> > >>  ifeq ($(origin O), command line)
> > >>  	...
> > >>  	ABSOLUTE_O := $(shell cd $(O) ; pwd)
> > >>  	OUTPUT := $(ABSOLUTE_O)/$(if $(subdir),$(subdir)/)
> > >>  endif
> > >>  endif
> > >>
> > >>This patch passes 'O' to Makefile.perf through cmdline explicitly
> > >>to make it follow O variable during build-test.
> > >>
> > >>Signed-off-by: Wang Nan <wangnan0@...wei.com>
> > >>Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
> > >>Cc: Jiri Olsa <jolsa@...nel.org>
> > >>Cc: Namhyung Kim <namhyung@...nel.org>
> > >>---
> > >>  tools/perf/tests/make | 12 ++++++++++--
> > >>  1 file changed, 10 insertions(+), 2 deletions(-)
> > >>
> > >>diff --git a/tools/perf/tests/make b/tools/perf/tests/make
> > >>index c0ee679..14d7b8d 100644
> > >>--- a/tools/perf/tests/make
> > >>+++ b/tools/perf/tests/make
> > >>@@ -5,7 +5,7 @@ ifeq ($(MAKECMDGOALS),)
> > >>  # no target specified, trigger the whole suite
> > >>  all:
> > >>  	@echo "Testing Makefile";      $(MAKE) -sf tests/make MK=Makefile
> > >>-	@echo "Testing Makefile.perf"; $(MAKE) -sf tests/make MK=Makefile.perf SET_PARALLEL=1
> > >>+	@echo "Testing Makefile.perf"; $(MAKE) -sf tests/make MK=Makefile.perf SET_PARALLEL=1 SET_O=1
> > >>  else
> > >>  # run only specific test over 'Makefile'
> > >>  %:
> > >>@@ -13,6 +13,14 @@ else
> > >>  endif
> > >>  else
> > >>  PERF := .
> > >>+O_OPT :=
> > >>+
> > >>+ifneq ($(O),)
> > >>+  FULL_O := $(shell readlink -f $(O) || echo $(O))
> > >>+  ifeq ($(SET_O),1)
> > >>+    O_OPT := 'O=$(FULL_O)'
> > >>+  endif
> > >>+endif
> > >>  PARALLEL_OPT=
> > >>  ifeq ($(SET_PARALLEL),1)
> > >>@@ -261,7 +269,7 @@ clean := @(cd $(PERF); make -s -f $(MK) clean >/dev/null)
> > >>  $(run):
> > >>  	$(call clean)
> > >>  	@TMP_DEST=$$(mktemp -d); \
> > >>-	cmd="cd $(PERF) && make -f $(MK) $(PARALLEL_OPT) DESTDIR=$$TMP_DEST $($@)"; \
> > >>+	cmd="cd $(PERF) && make -f $(MK) $(PARALLEL_OPT) $(O_OPT) DESTDIR=$$TMP_DEST $($@)"; \
> > >hum, but this set is to test make without O=... so why would you set it?
> > >run_O is the target for O=... tests
> > 
> > I have strong motivation to avoid polluting source directory.
> 
> yeah!

heh, I knew you'd be excited ;-) but does that actually mean
that build-test will never run tests in source directory?

jirka