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([2a05:6e02:1041:c10:ae20:597c:99b8:d161]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4853a946978sm88693385e9.1.2026.03.09.01.41.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Mar 2026 01:41:18 -0700 (PDT) Message-ID: <2ae5e4e5-a860-4f94-9655-67368d558f86@oss.qualcomm.com> Date: Mon, 9 Mar 2026 09:41:16 +0100 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 04/30] tools/thermal: Initialize CFLAGS before including Makefile.include To: Leo Yan , Arnaldo Carvalho de Melo , Ian Rogers , Namhyung Kim , James Clark , Kees Cook , Quentin Monnet , Nathan Chancellor , Nicolas Schier , Nick Desaulniers , Bill Wendling , Justin Stitt , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Peter Zijlstra , Ingo Molnar , Mark Rutland , Alexander Shishkin , Adrian Hunter , Masami Hiramatsu , William Breathitt Gray , Barry Song , Qinxin Xia , Bartosz Golaszewski , Kent Gibson , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Jonathan Cameron , David Lechner , =?UTF-8?Q?Nuno_S=C3=A1?= , Andy Shevchenko , Andrew Morton , Willy Tarreau , =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= , Josh Poimboeuf , Robert Moore , Len Brown , Srinivas Pandruvada , Tejun Heo , David Vernet , Andrea Righi , Changwoo Min , Mark Brown , Steven Rostedt , Gabriele Monaco , Shuah Khan , Jiri Kosina , Benjamin Tissoires Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, bpf@vger.kernel.org, linux-perf-users@vger.kernel.org References: <20260308-tools_build_fix_zero_init-v3-0-6477808123b7@arm.com> <20260308-tools_build_fix_zero_init-v3-4-6477808123b7@arm.com> Content-Language: en-US From: Daniel Lezcano In-Reply-To: <20260308-tools_build_fix_zero_init-v3-4-6477808123b7@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA5MDA3OSBTYWx0ZWRfX4B+Uhs8rncZ0 rm3aycCXixpny5/1mmjtnhEttAQU5N0hHPjrqw7E6Ro7weq3X4YKasAXoVlmcs2SKRJkzqBi/fH h6F2VLGChCQ2A6SZgDdGjKBmb8fpcrkSYT2C3qW/13kAmOKDDCO76ZOkNeM4ZN5e1LMUeqYYG0w vMKhMb0rRdSgkK/6gHDCtTW7q5tb0SZN9PKsW5R1bZGlKly+XEXvJD/S/+QmlnUV8ynH+WIt4BL i6oaWCLvffMUZptppIyXQGClRVLpH0tnGEQpFpFdZ4UpJ+13iwxmIqVCdvdKkeHFqYcPRLlUFoL BK0WT7Jmhr/GUZ3u5/A8sZgYUbbbRIgmmQUmUuNKam8PNXsFbSdUrFAPo7aiwjcn80lEX+Wg4jx ASun4fsTXEpG+B9XLlN2fUnE6WGHkpxflzi9vRJaXcgpIV17SRykISEnRF6M4Oht+NilgPWmAA1 6+euhvZb7eamswKJkgg== X-Proofpoint-ORIG-GUID: zknStP3ahbyPKBUoVa95E1meb7xzNT0n X-Proofpoint-GUID: zknStP3ahbyPKBUoVa95E1meb7xzNT0n X-Authority-Analysis: v=2.4 cv=e7sLiKp/ c=1 sm=1 tr=0 ts=69ae87b0 cx=c_pps a=HLyN3IcIa5EE8TELMZ618Q==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=7CQSdrXTAAAA:8 a=ZAywS_63PuHDt0GrRrsA:9 a=QEXdDO2ut3YA:10 a=bTQJ7kPSJx9SKPbeHEYW:22 a=a-qgeE7W1pNrGK8U0ZQC:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-09_03,2026-03-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 suspectscore=0 spamscore=0 bulkscore=0 impostorscore=0 malwarescore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603090079 Hi Leo, On 3/8/26 17:46, Leo Yan wrote: > Initialize CFLAGS to the default value before including > tools/scripts/Makefile.include. > > Defer appending EXTRA_CFLAGS to CFLAGS until after including > Makefile.include, as it may extend EXTRA_CFLAGS in the future. > > Signed-off-by: Leo Yan > --- > tools/thermal/lib/Makefile | 16 +++++++++------- > 1 file changed, 9 insertions(+), 7 deletions(-) > > diff --git a/tools/thermal/lib/Makefile b/tools/thermal/lib/Makefile > index 056d212f25cf51cd8c02260fbe2ef28dda5e4acb..1890779f1574ebd9015f3001b9bb31d4bc0ae5ce 100644 > --- a/tools/thermal/lib/Makefile > +++ b/tools/thermal/lib/Makefile > @@ -23,6 +23,14 @@ INSTALL = install > DESTDIR ?= > DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' > > +# Defer assigning EXTRA_CFLAGS to CFLAGS until after including > +# tools/scripts/Makefile.include, as it may add flags to EXTRA_CFLAGS. > +ifdef EXTRA_CFLAGS > + CFLAGS := > +else > + CFLAGS := -g -Wall > +endif > + Sorry, I don't get the comment :/ Can you clarify the intended purpose with this change and the 'override' directive below ? > include $(srctree)/tools/scripts/Makefile.include > include $(srctree)/tools/scripts/Makefile.arch > > @@ -39,13 +47,6 @@ libdir = $(prefix)/$(libdir_relative) > libdir_SQ = $(subst ','\'',$(libdir)) > libdir_relative_SQ = $(subst ','\'',$(libdir_relative)) > > -# Set compile option CFLAGS > -ifdef EXTRA_CFLAGS > - CFLAGS := $(EXTRA_CFLAGS) > -else > - CFLAGS := -g -Wall > -endif > - > INCLUDES = \ > -I/usr/include/libnl3 \ > -I$(srctree)/tools/lib/thermal/include \ > @@ -56,6 +57,7 @@ INCLUDES = \ > -I$(srctree)/tools/include/uapi > > # Append required CFLAGS > +override CFLAGS += $(EXTRA_CFLAGS) > override CFLAGS += $(EXTRA_WARNINGS) > override CFLAGS += -Werror -Wall > override CFLAGS += -fPIC >