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#@File
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### ############################################################################

# The purpose of this file is to keep KernelConfig macros isolated from the
# BothConfig and UserConfig macros. This allows this file to be removed from
# the user mode package and, thus, avoids the kernel config files being
# generated when building from this package.
#

# Write out a kernel GNU make option.
#
define KernelConfigMake
$$(shell echo "override $(1) $(if $(2),:= $(strip $(2)),:=)" >>$(CONFIG_KERNEL_MK).new)
$(if $(filter config,$(D)),$(info KernelConfigMake $(1) := $(2)	# $(if $($(1)),$(origin $(1)),default)))
endef

# Conditionally write out a kernel GNU make option
#
define _TunableKernelConfigMake
ifneq ($$($(1)),)
ifneq ($$($(1)),0)
$$(eval $$(call KernelConfigMake,$(1),$$($(1))))
else
unexport $(1)
endif
else
ifneq ($(2),)
$$(eval $$(call KernelConfigMake,$(1),$(2)))
else
unexport $(1)
endif
endif
endef

define TunableKernelConfigMake
$$(eval $$(call _TunableKernelConfigMake,$(1),$(2)))
$(call RegisterOptionHelp,$(1),$(2),$(3),$(4))
endef

# Write out a kernel-only option
#
define KernelConfigC
$$(shell echo "#define $(if $(2),$(1) $(2),$(1))" >>$(CONFIG_KERNEL_H).new)
$(if $(filter config,$(D)),$(info KernelConfigC    #define $(1) $(2)	/* $(if $($(1)),$(origin $(1)),default) */),)
endef

# Write out kernel-only AppHint defaults as specified
#
define AppHintConfigC
ifneq ($$($(1)),)
$$(eval $$(call KernelConfigC,$(1),$$($(1))))
else
$$(eval $$(call KernelConfigC,$(1),$(2)))
endif
$(call RegisterOptionHelp,$(1),$(2),$(3),$(4))
endef

# Write out kernel-only AppHint
# Converts user supplied value to a set of ORed flags or defaults as specified
#
define AppHintFlagsConfigC
ifneq ($$($(1)),)
$$(eval $$(call ValidateValues,$(1),$(4)))
_$(1)_FLAGS := $$(subst $$(comma),$$(space),$$($(1)))
_$(1)_FLAGS := $$(strip $$(foreach group,$$(_$(1)_FLAGS),$(3)$$(group)))
_$(1)_FLAGS := $$(subst $$(space), | ,$$(_$(1)_FLAGS))
$$(eval $$(call KernelConfigC,$(1),$$(_$(1)_FLAGS)))
else
$$(eval $$(call KernelConfigC,$(1),$(2)))
endif
$(call RegisterOptionHelp,$(1),$(2),$(5))
endef

# Conditionally write out a kernel-only option
#
define _TunableKernelConfigC
ifneq ($$($(1)),)
ifneq ($$($(1)),0)
ifeq ($$($(1)),1)
$$(eval $$(call KernelConfigC,$(1),))
else
$$(eval $$(call KernelConfigC,$(1),$$($(1))))
endif
endif
else
ifneq ($(2),)
ifeq ($(2),1)
$$(eval $$(call KernelConfigC,$(1),))
else
$$(eval $$(call KernelConfigC,$(1),$(2)))
endif
endif
endif
endef

define TunableKernelConfigC
$$(eval $$(call _TunableKernelConfigC,$(1),$(2)))
$(call RegisterOptionHelp,$(1),$(2),$(3),$(4))
endef

# delete any previous intermediary files
$(shell \
	for file in $(CONFIG_KERNEL_H).new $(CONFIG_KERNEL_MK).new ; do \
		rm -f $$file; \
	done)