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kbuild: mergeconfig: fix "jobserver unavailable" warning
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>
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@ -110,7 +110,7 @@ define mergeconfig
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$(if $(wildcard $(objtree)/.config),, $(error You need an existing .config for this target))
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$(if $(call configfiles,$(1)),, $(error No configuration exists for this target on this architecture))
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$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m -O $(objtree) $(objtree)/.config $(call configfiles,$(1))
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$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
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+$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
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endef
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PHONY += kvmconfig
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