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kbuild: mergeconfig: fix "jobserver unavailable" warning

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If "make kvmconfig" is run with "-j" option, a warning message,
"jobserver unavailable: using -j1.  Add `+' to parent make rule.",
is displayed.

  $ make -s defconfig
  *** Default configuration is based on 'x86_64_defconfig'
  #
  # configuration written to .config
  #
  $ make -j8 kvmconfig
  Using ./.config as base
  Merging ./arch/x86/configs/kvm_guest.config
    [ snip ]
  #
  # merged configuration written to ./.config (needs make)
  #
  make[2]: warning: jobserver unavailable: using -j1.  Add `+' to
  parent make rule.
  scripts/kconfig/conf --oldconfig Kconfig
    [ snip ]
  #
  # configuration written to .config
  #

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Masahiro Yamada 2015-03-13 15:21:38 +09:00 committed by Michal Marek
parent ad8d40cda3
commit de46199372
1 changed files with 1 additions and 1 deletions
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2
scripts/kconfig/Makefile
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@ -110,7 +110,7 @@ define mergeconfig
$(if $(wildcard $(objtree)/.config),, $(error You need an existing .config for this target))
$(if $(call configfiles,$(1)),, $(error No configuration exists for this target on this architecture))
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m -O $(objtree) $(objtree)/.config $(call configfiles,$(1))
$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
+$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
endef
PHONY += kvmconfig