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Date: Sat, 18 Nov 2017 19:23:13 +0800 From: Cao jin <caoj.fnst@...fujitsu.com> To: <linux-kbuild@...r.kernel.org>, <linux-kernel@...r.kernel.org> CC: <yamada.masahiro@...ionext.com>, <michal.lkml@...kovi.net> Subject: [PATCH RFC] kbuild: improvement in Makefile.modbuiltin Drop unnecessary "__subdir-Y" and `cat /dev/null` Signed-off-by: Cao jin <caoj.fnst@...fujitsu.com> --- Don't know why they exist, but a simple build is fine without them in my test scripts/Makefile.modbuiltin | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/scripts/Makefile.modbuiltin b/scripts/Makefile.modbuiltin index a763b4775d06..cbb1e3dc1ef9 100644 --- a/scripts/Makefile.modbuiltin +++ b/scripts/Makefile.modbuiltin @@ -26,8 +26,7 @@ kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbui include $(kbuild-file) include scripts/Makefile.lib -__subdir-Y := $(patsubst %/,%,$(filter %/, $(obj-Y))) -subdir-Y += $(__subdir-Y) +subdir-Y := $(patsubst %/,%,$(filter %/, $(obj-Y))) subdir-ym := $(sort $(subdir-y) $(subdir-Y) $(subdir-m)) subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) obj-Y := $(addprefix $(obj)/,$(obj-Y)) @@ -41,7 +40,7 @@ __modbuiltin: $(modbuiltin-target) $(subdir-ym) $(modbuiltin-target): $(subdir-ym) FORCE $(Q)(for m in $(modbuiltin-mods); do echo kernel/$$m; done; \ - cat /dev/null $(modbuiltin-subdirs)) > $@ + cat $(modbuiltin-subdirs)) > $@ PHONY += FORCE -- 2.13.6
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