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authorMasahiro Yamada <masahiroy@kernel.org>2022-06-14 14:51:49 +0900
committerMasahiro Yamada <masahiroy@kernel.org>2022-07-27 21:17:59 +0900
commit5439d4d4dcee548b1ad984c293225c1668045ad2 (patch)
tree96b73042f97b03f590a566894b2d3e8d4fb5abe4 /scripts/Makefile.build
parent31f6d95c2cab1898c05a95f434f54a327431f158 (diff)
downloadlwn-5439d4d4dcee548b1ad984c293225c1668045ad2.tar.gz
lwn-5439d4d4dcee548b1ad984c293225c1668045ad2.zip
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>
Diffstat (limited to 'scripts/Makefile.build')
-rw-r--r--scripts/Makefile.build5
1 files changed, 2 insertions, 3 deletions
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)