9903ea1c11
Fix warnings where undefined vars are used. Make Kconfig emit "FOO=" for unset bool options To ensure make variables are always defined, even if empty. When writing auto.conf, include symbols disabled by dependency to make sure all make variables are always defined. Fixes espressif/esp-idf#137 Cherry-picked from https://github.com/espressif/esp-idf/pull/138
97 lines
3.8 KiB
Makefile
97 lines
3.8 KiB
Makefile
# Makefile support for the menuconfig system
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#Find all Kconfig files for all components
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COMPONENT_KCONFIGS := $(foreach component,$(COMPONENT_PATHS),$(wildcard $(component)/Kconfig))
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COMPONENT_KCONFIGS_PROJBUILD := $(foreach component,$(COMPONENT_PATHS),$(wildcard $(component)/Kconfig.projbuild))
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#For doing make menuconfig etc
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KCONFIG_TOOL_DIR=$(IDF_PATH)/tools/kconfig
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# set SDKCONFIG to the project's sdkconfig,
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# unless it's overriden (happens for bootloader)
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SDKCONFIG ?= $(PROJECT_PATH)/sdkconfig
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# SDKCONFIG_DEFAULTS is an optional file containing default
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# overrides (usually used for esp-idf examples)
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SDKCONFIG_DEFAULTS ?= $(PROJECT_PATH)/sdkconfig.defaults
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# reset MAKEFLAGS as the menuconfig makefile uses implicit compile rules
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$(KCONFIG_TOOL_DIR)/mconf $(KCONFIG_TOOL_DIR)/conf: $(wildcard $(KCONFIG_TOOL_DIR)/*.c)
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MAKEFLAGS="" CC=$(HOSTCC) LD=$(HOSTLD) \
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$(MAKE) -C $(KCONFIG_TOOL_DIR)
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ifeq ("$(wildcard $(SDKCONFIG))","")
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ifeq ("$(filter defconfig clean% %clean, $(MAKECMDGOALS))","")
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# if no configuration file is present and defconfig or clean
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# is not a named target, run defconfig then menuconfig to get the initial config
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$(SDKCONFIG): menuconfig
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menuconfig: defconfig
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else
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# otherwise, just run defconfig
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$(SDKCONFIG): defconfig
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endif
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endif
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# macro for the commands to run kconfig tools conf or mconf.
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# $1 is the name (& args) of the conf tool to run
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define RunConf
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mkdir -p $(BUILD_DIR_BASE)/include/config
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cd $(BUILD_DIR_BASE); KCONFIG_AUTOHEADER=$(abspath $(BUILD_DIR_BASE)/include/sdkconfig.h) \
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COMPONENT_KCONFIGS="$(COMPONENT_KCONFIGS)" KCONFIG_CONFIG=$(SDKCONFIG) \
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COMPONENT_KCONFIGS_PROJBUILD="$(COMPONENT_KCONFIGS_PROJBUILD)" \
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$(KCONFIG_TOOL_DIR)/$1 $(IDF_PATH)/Kconfig
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endef
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ifndef MAKE_RESTARTS
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# menuconfig, defconfig and "GENCONFIG" configuration generation only
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# ever run on the first make pass, subsequent passes don't run these
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# (make often wants to re-run them as the conf tool can regenerate the
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# sdkconfig input file as an output file, but this is not what the
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# user wants - a single config pass is enough to produce all output
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# files.)
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#
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# To prevent problems missing genconfig, ensure none of these targets
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# depend on any prerequisite that may cause a make restart as part of
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# the prerequisite's own recipe.
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menuconfig: $(KCONFIG_TOOL_DIR)/mconf
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$(summary) MENUCONFIG
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ifdef BATCH_BUILD
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@echo "Can't run interactive configuration inside non-interactive build process."
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@echo ""
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@echo "Open a command line terminal and run 'make menuconfig' from there."
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@echo "See esp-idf documentation for more details."
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@exit 1
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else
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$(call RunConf,mconf)
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endif
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# defconfig creates a default config, based on SDKCONFIG_DEFAULTS if present
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defconfig: $(KCONFIG_TOOL_DIR)/conf
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$(summary) DEFCONFIG
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ifneq ("$(wildcard $(SDKCONFIG_DEFAULTS))","")
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cat $(SDKCONFIG_DEFAULTS) >> $(SDKCONFIG) # append defaults to sdkconfig, will override existing values
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endif
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$(call RunConf,conf --olddefconfig)
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# if neither defconfig or menuconfig are requested, use the GENCONFIG rule to
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# ensure generated config files are up to date
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$(SDKCONFIG_MAKEFILE) $(BUILD_DIR_BASE)/include/sdkconfig.h: $(KCONFIG_TOOL_DIR)/conf $(SDKCONFIG) $(COMPONENT_KCONFIGS) $(COMPONENT_KCONFIGS_PROJBUILD) | $(call prereq_if_explicit,defconfig) $(call prereq_if_explicit,menuconfig)
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$(summary) GENCONFIG
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ifdef BATCH_BUILD # can't prompt for new config values like on terminal
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$(call RunConf,conf --olddefconfig)
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endif
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$(call RunConf,conf --silentoldconfig)
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touch $(SDKCONFIG_MAKEFILE) $(BUILD_DIR_BASE)/include/sdkconfig.h # ensure newer than sdkconfig
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else # "$(MAKE_RESTARTS)" != ""
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# on subsequent make passes, skip config generation entirely
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defconfig:
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menuconfig:
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endif
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.PHONY: config-clean defconfig menuconfig
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config-clean:
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$(summary) RM CONFIG
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MAKEFLAGS="" $(MAKE) -C $(KCONFIG_TOOL_DIR) clean
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rm -rf $(BUILD_DIR_BASE)/include/config $(BUILD_DIR_BASE)/include/sdkconfig.h
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