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kbuild: tar-pkg: enable communication with jobserver

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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>
This commit is contained in:
Trevor Bourget 2019-05-27 16:54:23 -07:00 committed by Masahiro Yamada
parent 8dde5715b2
commit a6e0487709
1 changed files with 1 additions and 1 deletions
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2
scripts/package/Makefile
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@ -104,7 +104,7 @@ clean-dirs += $(objtree)/snap/
# ---------------------------------------------------------------------------
tar%pkg: FORCE
$(MAKE) -f $(srctree)/Makefile
$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@
+$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@
clean-dirs += $(objtree)/tar-install/