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https://github.com/projectacrn/acrn-hypervisor.git
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c4493cc1f8
Since .config has PLATFORM now, it is expected that the PLATFORM= command line
option is no longer necessary as long as a proper .config exists.
This patch implements this expectation. Now the platform to be selected is
determined by the following steps.
1. If PLATFORM= is provided on the command line, the specified value is
used.
2. If there is no PLATFORM= on the command line and PLATFORM is defined in
config.mk, its value is used.
3. If neither PLATFORM= on the command line nor config.mk is available, a
predefined default value is used.
v1 -> v2:
* 'make oldconfig' should not pass CONFIG_xxx to the script since config.mk
can be out-dated.
* Change the default value of PLATFORM to SBL for backward compatibility of
'make all'.
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Geoffroy VanCutsem <geoffroy.vancutsem@intel.com>
81 lines
2.8 KiB
Makefile
81 lines
2.8 KiB
Makefile
# usage: override_config <symbol> <default>
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#
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# Given a configuration symbol (without the CONFIG_ prefix), this macro
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# overrides its value as follows.
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# 1. If a value is specified from command line, that value is used.
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# 2. If neither config.mk nor the command line specifies a value, the given
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# default is used.
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define override_config =
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ifdef $(1)
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CONFIG_$(1) := $($(1))
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else ifndef CONFIG_$(1)
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CONFIG_$(1) := $(2)
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endif
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endef
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HV_CONFIG := .config
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HV_DEFCONFIG := defconfig
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HV_CONFIG_H := include/config.h
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HV_CONFIG_MK := include/config.mk
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KCONFIG_DIR := $(BASEDIR)/../scripts/kconfig
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-include $(HV_OBJDIR)/$(HV_CONFIG_MK)
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$(eval $(call override_config,PLATFORM,sbl))
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$(eval $(call check_dep_exec,python3,KCONFIG_DEPS))
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$(eval $(call check_dep_exec,pip3,KCONFIG_DEPS))
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$(eval $(call check_dep_py3lib,kconfiglib,KCONFIG_DEPS))
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# This target invoke silentoldconfig to generate or update a .config. Useful as
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# a prerequisite of other targets depending on .config.
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$(HV_OBJDIR)/$(HV_CONFIG): oldconfig
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# Note: This target must not depend on a phony target (e.g. oldconfig) because
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# it'll trigger endless re-execution of make.
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$(HV_OBJDIR)/$(HV_CONFIG_MK): $(HV_OBJDIR)/$(HV_CONFIG)
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@mkdir -p $(dir $@)
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@sed 's/="\(.*\)"$$/=\1/g' $(HV_OBJDIR)/$(HV_CONFIG) > $@
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$(HV_OBJDIR)/$(HV_CONFIG_H): $(HV_OBJDIR)/$(HV_CONFIG)
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@mkdir -p $(dir $@)
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@python3 $(KCONFIG_DIR)/generate_header.py Kconfig $< $@
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# This target forcefully generate a .config based on a given default
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# one. Overwrite the current .config if it exists.
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.PHONY: defconfig
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defconfig: $(KCONFIG_DEPS)
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@mkdir -p $(HV_OBJDIR)
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@python3 $(KCONFIG_DIR)/defconfig.py Kconfig \
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arch/x86/configs/$(CONFIG_PLATFORM).config \
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$(HV_OBJDIR)/$(HV_CONFIG)
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# Use silentoldconfig to forcefully update the current .config, or generate a
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# new one if no previous .config exists. This target can be used as a
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# prerequisite of all the others to make sure that the .config is consistent
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# even it has been modified manually before.
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#
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# Note: Should not pass CONFIG_xxx to silentoldconfig here because config.mk can
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# be out-dated.
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.PHONY: oldconfig
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oldconfig: $(KCONFIG_DEPS)
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@mkdir -p $(HV_OBJDIR)
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@python3 $(KCONFIG_DIR)/silentoldconfig.py Kconfig \
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$(HV_OBJDIR)/$(HV_CONFIG) \
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PLATFORM_$(shell echo $(PLATFORM) | tr a-z A-Z)=y
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# Minimize the current .config. This target can be used to generate a defconfig
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# for future use.
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.PHONY: minimalconfig
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minimalconfig: $(HV_OBJDIR)/$(HV_CONFIG)
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@python3 $(KCONFIG_DIR)/minimalconfig.py Kconfig \
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$(HV_OBJDIR)/$(HV_CONFIG) \
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$(HV_OBJDIR)/$(HV_DEFCONFIG)
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$(eval $(call check_dep_exec,menuconfig,MENUCONFIG_DEPS))
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export KCONFIG_CONFIG := $(HV_OBJDIR)/$(HV_CONFIG)
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menuconfig: $(MENUCONFIG_DEPS) $(HV_OBJDIR)/$(HV_CONFIG)
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@python3 $(shell which menuconfig) Kconfig
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CFLAGS += -include $(HV_OBJDIR)/$(HV_CONFIG_H)
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