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[84.3.50.134]) by smtp.gmail.com with ESMTPSA id cn27sm724436edb.4.2020.08.19.23.35.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Aug 2020 23:35:27 -0700 (PDT) Date: Thu, 20 Aug 2020 08:35:26 +0200 From: Ingo Molnar To: linux-kernel@vger.kernel.org, Masahiro Yamada , Michal Marek Subject: [PATCH] kbuild: Run syncconfig with -s Message-ID: <20200820063526.GA3278096@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On every kernel build that runs --syncconfig, there's an output of the following line: scripts/kconfig/conf --syncconfig Kconfig This is the only non-platform build message the kbuild system emits that isn't prefixed by at least a space, or is a build warning. Run it under -s - if there's any problem it will emit messages anyway. With this change the following simple grep filter will show all build warnings and errors of a kernel build: make | grep -v '^ ' Signed-off-by: Ingo Molnar --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 9cac6fde3479..2057c92a6205 100644 --- a/Makefile +++ b/Makefile @@ -709,7 +709,7 @@ $(KCONFIG_CONFIG): # The syncconfig should be executed only once to make all the targets. # (Note: use the grouped target '&:' when we bump to GNU Make 4.3) %/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h: $(KCONFIG_CONFIG) - $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig + $(Q)$(MAKE) -sf $(srctree)/Makefile syncconfig else # !may-sync-config # External modules and some install targets need include/generated/autoconf.h # and include/config/auto.conf but do not care if they are up-to-date.