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Date: Tue, 7 Feb 2017 00:19:42 +0900 From: Namhyung Kim <namhyung@...nel.org> To: Arnaldo Carvalho de Melo <acme@...nel.org> Cc: Thomas Ilsche <thomas.ilsche@...dresden.de>, David Carrillo-Cisneros <davidcc@...gle.com>, linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Jiri Olsa <jolsa@...nel.org>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Wang Nan <wangnan0@...wei.com>, He Kuang <hekuang@...wei.com>, Michal Marek <mmarek@...e.com>, Uwe Kleine-König <u.kleine-koenig@...gutronix.de>, Stephane Eranian <eranian@...gle.com>, Paul Turner <pjt@...gle.com> Subject: Re: [PATCH 1/4] perf tools: pass PYTHON config to feature detection On Mon, Feb 06, 2017 at 10:19:30AM -0300, Arnaldo Carvalho de Melo wrote: > Em Wed, Feb 01, 2017 at 10:38:01PM -0800, David Carrillo-Cisneros escreveu: > > Python's CC and link Makefile variables were not passed to feature > > detection, causing feature detection to use system's Python rather than > > PYTHON_CONFIG's one. This created a mismatch between the detected Python > > support and the one actually used by perf when PYTHON_CONFIG is specified. > > > > Fix it by moving Python's variable initialization to before feature > > detection and pass FLAGS_PYTHON_EMBED to Python's feature detection's > > build target. > > Hi Namhyung, Thomas, since this was last touched in the cset below, can you > please check this if possible and provide Acked-by tags? > > Thanks, > > commit 56c7d79e49776084b852e451bda5f59dc3bcf894 > Author: Namhyung Kim <namhyung@...nel.org> > Date: Tue Jul 29 15:57:19 2014 +0900 > > perf tools: Fix make PYTHON override > > Thomas reported that make PYTHON=python2 is not work on some systems. I > can reproduce it on my ArchLinux box too. > > This is because it's overridden by config/feature-checks/Makefile > regardless of PYTHON setting. I guess it's a bug slipped into during > the feature checking change. > > Actually, we don't need to check python-config in the feature-checks. > We can just pass appropriate FEATURE_CHECK_*FLAGS. > > Reported-by: Thomas Ilsche <thomas.ilsche@...dresden.de> > Signed-off-by: Namhyung Kim <namhyung@...nel.org> > Tested-by: Thomas Ilsche <thomas.ilsche@...dresden.de> > > > > Signed-off-by: David Carrillo-Cisneros <davidcc@...gle.com> > > --- > > tools/build/feature/Makefile | 2 +- > > tools/perf/Makefile.config | 23 ++++++++++------------- > > 2 files changed, 11 insertions(+), 14 deletions(-) > > > > diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile > > index b564a2eea039..3dd2c600d250 100644 > > --- a/tools/build/feature/Makefile > > +++ b/tools/build/feature/Makefile > > @@ -171,7 +171,7 @@ $(OUTPUT)test-libperl.bin: > > $(BUILD) $(FLAGS_PERL_EMBED) > > > > $(OUTPUT)test-libpython.bin: > > - $(BUILD) > > + $(BUILD) $(FLAGS_PYTHON_EMBED) > > > > $(OUTPUT)test-libpython-version.bin: > > $(BUILD) > > diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config > > index 03cf947755b9..41f5c41c5660 100644 > > --- a/tools/perf/Makefile.config > > +++ b/tools/perf/Makefile.config > > @@ -166,10 +166,18 @@ PYTHON2_CONFIG := \ > > override PYTHON_CONFIG := \ > > $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON2_CONFIG)) > > > > +grep-libs = $(filter -l%,$(1)) > > +strip-libs = $(filter-out -l%,$(1)) > > + > > PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG)) > > > > -PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null) > > -PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --cflags 2>/dev/null) > > +ifdef PYTHON_CONFIG > > + PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null) > > + PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS)) > > + PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil > > + PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --cflags 2>/dev/null) > > + FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS) > > +endif > > > > FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS) > > FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS) Hmm.. I guess these feature check flags should be passed to the above Makefile but it seems not. Thanks, Namhyung > > @@ -542,8 +550,6 @@ ifndef NO_GTK2 > > endif > > endif > > > > -grep-libs = $(filter -l%,$(1)) > > -strip-libs = $(filter-out -l%,$(1)) > > > > ifdef NO_LIBPERL > > CFLAGS += -DNO_LIBPERL > > @@ -591,18 +597,9 @@ else > > $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev) > > else > > > > - PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG)) > > - > > - PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null) > > - PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS)) > > - PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil > > - PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --cflags 2>/dev/null) > > - FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS) > > - > > ifneq ($(feature-libpython), 1) > > $(call disable-python,No 'Python.h' (for Python 2.x support) was found: disables Python support - please install python-devel/python-dev) > > else > > - > > ifneq ($(feature-libpython-version), 1) > > $(warning Python 3 is not yet supported; please set) > > $(warning PYTHON and/or PYTHON_CONFIG appropriately.) > > -- > > 2.11.0.483.g087da7b7c-goog
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