linux-kernel - [PATCH] kbuild: descend to scripts/kconfig/ directly when syncconfig is needed

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Date:   Fri, 18 Jan 2019 17:16:52 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-kbuild@...r.kernel.org
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] kbuild: descend to scripts/kconfig/ directly when syncconfig is needed

The recursion of the top Makefile is inefficient.
Just descend to scripts/kconfig/.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 9851a44..d5f0ac4 100644
--- a/Makefile
+++ b/Makefile
@@ -631,7 +631,7 @@ $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
 # include/generated/ and include/config/. Update them if .config is newer than
 # include/config/auto.conf (which mirrors .config).
 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
-	$(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
+	$(Q)$(MAKE) $(build)=scripts/kconfig syncconfig
 else
 # 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.
-- 
2.7.4