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kbuild: Add config fragment merge functionality

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So far this function was only used locally in powerpc, some other
architectures might benefit from it. Move it into
scripts/Makefile.defconf.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230124110213.3221264-10-alexander.stein@ew.tq-group.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Nicolas Saenz Julienne 2023-01-24 12:02:12 +01:00 committed by Arnd Bergmann
parent af8bd00831
commit a400c287ce
2 changed files with 16 additions and 11 deletions
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12
arch/powerpc/Makefile
View file

@ -253,17 +253,7 @@ PHONY += bootwrapper_install
bootwrapper_install:
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
# Used to create 'merged defconfigs'
# To use it $(call) it with the first argument as the base defconfig
# and the second argument as a space separated list of .config files to merge,
# without the .config suffix.
define merge_into_defconfig
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/$(1) \
$(foreach config,$(2),$(srctree)/arch/$(ARCH)/configs/$(config).config)
+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
endef
include $(srctree)/scripts/Makefile.defconf
PHONY += pseries_le_defconfig
pseries_le_defconfig:
$(call merge_into_defconfig,pseries_defconfig,le)

15
scripts/Makefile.defconf Normal file
View file

@ -0,0 +1,15 @@
# SPDX-License-Identifier: GPL-2.0
# Configuration heplers
# Creates 'merged defconfigs'
# ---------------------------------------------------------------------------
# Usage:
# $(call merge_into_defconfig,base_config,config_fragment1 config_fragment2 ...)
#
# Input config fragments without '.config' suffix
define merge_into_defconfig
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/$(1) \
$(foreach config,$(2),$(srctree)/arch/$(ARCH)/configs/$(config).config)
+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
endef