From: Masahiro Yamada <masahiroy@kernel.org>
Date: Tue, 14 Jun 2022 05:51:49 +0000 (+0900)
Subject: kbuild: remove sed command from cmd_ar_builtin
X-Git-Tag: microblaze-v6.1~48^2~27
X-Git-Url: http://git.monstr.eu/?p=linux-2.6-microblaze.git;a=commitdiff_plain;h=5439d4d4dcee548b1ad984c293225c1668045ad2

kbuild: remove sed command from cmd_ar_builtin

Replace a pipeline of echo and sed with printf to decrease process forks.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
---

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index cac070aee791..784f46d41959 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -358,9 +358,8 @@ $(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ;
 
 quiet_cmd_ar_builtin = AR      $@
       cmd_ar_builtin = rm -f $@; \
-		echo $(patsubst $(obj)/%,%,$(real-prereqs)) | \
-		sed -E 's:([^ ]+):$(obj)/\1:g' | \
-		xargs $(AR) cDPrST $@
+	$(if $(real-prereqs), printf "$(obj)/%s " $(patsubst $(obj)/%,%,$(real-prereqs)) | xargs) \
+	$(AR) cDPrST $@
 
 $(obj)/built-in.a: $(real-obj-y) FORCE
 	$(call if_changed,ar_builtin)