kbuild: tar-pkg: enable communication with jobserver
The buildtar script might want to invoke a make, so tell the parent make to pass the jobserver token pipe to the subcommand by prefixing the command with a +. This addresses the issue seen here: /bin/sh ../scripts/package/buildtar tar-pkg make[3]: warning: jobserver unavailable: using -j1. Add '+' to parent make rule. See https://www.gnu.org/software/make/manual/html_node/Job-Slots.html for more information. Signed-off-by: Trevor Bourget <tgb.kernel@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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@ -104,7 +104,7 @@ clean-dirs += $(objtree)/snap/
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# ---------------------------------------------------------------------------
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tar%pkg: FORCE
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$(MAKE) -f $(srctree)/Makefile
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$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@
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+$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@
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clean-dirs += $(objtree)/tar-install/
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