From: John Garry <john.garry@huawei.com>
To: <peterz@infradead.org>, <acme@kernel.org>, <mark.rutland@arm.com>,
<alexander.shishkin@linux.intel.com>, <jolsa@redhat.com>,
<namhyung@kernel.org>, <mingo@redhat.com>
Cc: <irogers@google.com>, <linux-perf-users@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <kjain@linux.ibm.com>,
<james.clark@arm.com>, John Garry <john.garry@huawei.com>
Subject: [PATCH v2 2/2] perf jevents: Enable warnings through HOSTCFLAGS
Date: Thu, 21 Oct 2021 17:16:45 +0800 [thread overview]
Message-ID: <1634807805-40093-3-git-send-email-john.garry@huawei.com> (raw)
In-Reply-To: <1634807805-40093-1-git-send-email-john.garry@huawei.com>
Currently no compiler warnings at all are enabled for building jevents,
so help catch bugs at compile time by enabling through HOSTCFLAGS.
Signed-off-by: John Garry <john.garry@huawei.com>
---
tools/perf/Makefile.config | 5 +++++
tools/perf/Makefile.perf | 2 +-
tools/perf/pmu-events/Build | 2 +-
3 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 0ae2e3d8b832..374f65b52157 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -17,6 +17,7 @@ detected = $(shell echo "$(1)=y" >> $(OUTPUT).config-detected)
detected_var = $(shell echo "$(1)=$($(1))" >> $(OUTPUT).config-detected)
CFLAGS := $(EXTRA_CFLAGS) $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
+HOSTCFLAGS := $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
include $(srctree)/tools/scripts/Makefile.arch
@@ -211,6 +212,7 @@ endif
ifneq ($(WERROR),0)
CORE_CFLAGS += -Werror
CXXFLAGS += -Werror
+ HOSTCFLAGS += -Werror
endif
ifndef DEBUG
@@ -292,6 +294,9 @@ CXXFLAGS += -ggdb3
CXXFLAGS += -funwind-tables
CXXFLAGS += -Wno-strict-aliasing
+HOSTCFLAGS += -Wall
+HOSTCFLAGS += -Wextra
+
# Enforce a non-executable stack, as we may regress (again) in the future by
# adding assembler files missing the .GNU-stack linker note.
LDFLAGS += -Wl,-z,noexecstack
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 7df13e74450c..118bcdc70bb4 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -226,7 +226,7 @@ else
endif
export srctree OUTPUT RM CC CXX LD AR CFLAGS CXXFLAGS V BISON FLEX AWK
-export HOSTCC HOSTLD HOSTAR
+export HOSTCC HOSTLD HOSTAR HOSTCFLAGS
include $(srctree)/tools/build/Makefile.include
diff --git a/tools/perf/pmu-events/Build b/tools/perf/pmu-events/Build
index a055dee6a46a..d5c287f069a2 100644
--- a/tools/perf/pmu-events/Build
+++ b/tools/perf/pmu-events/Build
@@ -1,7 +1,7 @@
hostprogs := jevents
jevents-y += json.o jsmn.o jevents.o
-HOSTCFLAGS_jevents.o = -I$(srctree)/tools/include
+HOSTCFLAGS_jevents.o = -I$(srctree)/tools/include $(HOSTCFLAGS)
pmu-events-y += pmu-events.o
JDIR = pmu-events/arch/$(SRCARCH)
JSON = $(shell [ -d $(JDIR) ] && \
--
2.17.1
next prev parent reply other threads:[~2021-10-21 9:22 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-21 9:16 [PATCH v2 0/2] perf jevents: Enable build warnings John Garry
2021-10-21 9:16 ` [PATCH v2 1/2] perf jevents: Fix some would-be warnings John Garry
2021-10-21 9:16 ` John Garry [this message]
2021-10-21 12:48 ` [PATCH v2 2/2] perf jevents: Enable warnings through HOSTCFLAGS Jiri Olsa
2021-10-21 15:50 ` John Garry
2021-10-21 15:58 ` Jiri Olsa
2021-10-22 9:42 ` John Garry
2021-10-25 11:40 ` Jiri Olsa
2021-10-25 16:20 ` Arnaldo Carvalho de Melo
2021-10-28 8:23 ` John Garry
2021-10-28 11:17 ` Arnaldo Carvalho de Melo
2021-10-28 11:40 ` John Garry
2021-10-21 12:55 ` [PATCH v2 0/2] perf jevents: Enable build warnings Arnaldo Carvalho de Melo
2021-10-21 13:02 ` John Garry
2021-10-21 14:36 ` Arnaldo Carvalho de Melo
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