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Makefile: Don't re-build libraries or re-link ELF files if nothing has changed in the component

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make/build_system_tests.sh should now pass.
This commit is contained in:
Angus Gratton 2016-08-24 13:02:51 +08:00
parent 938d13c5a3
commit 116e730132
1 changed files with 22 additions and 10 deletions
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32
make/project.mk
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@ -166,9 +166,15 @@ $(foreach componentpath,$(COMPONENT_PATHS),$(eval $(call includeProjBuildMakefil
# once we know component paths, we can include the config
include $(IDF_PATH)/make/project_config.mk
# ELF depends on the -build target of every component
$(APP_ELF): $(addsuffix -build,$(notdir $(COMPONENT_PATHS_BUILDABLE)))
$(vecho) LD $(notdir $@)
# A "component" library is any library in the LDFLAGS where
# the name of the library is also a name of the component
APP_LIBRARIES = $(patsubst -l%,%,$(filter -l%,$(LDFLAGS)))
COMPONENT_LIBRARIES = $(filter $(notdir $(COMPONENT_PATHS_BUILDABLE)),$(APP_LIBRARIES))
# ELF depends on the library archive files for COMPONENT_LIBRARIES
# the rules to build these are emitted as part of GenerateComponentTarget below
$(APP_ELF): $(foreach libcomp,$(COMPONENT_LIBRARIES),$(BUILD_DIR_BASE)/$(libcomp)/lib$(libcomp).a)
$(summary) LD $(notdir $@)
$(Q) $(CC) $(LDFLAGS) -o $@ -Wl,-Map=$(APP_MAP)
# Generation of $(APP_BIN) from $(APP_ELF) is added by the esptool
@ -182,25 +188,31 @@ all_binaries: $(APP_BIN)
$(BUILD_DIR_BASE):
mkdir -p $(BUILD_DIR_BASE)
define GenerateComponentTarget
define GenerateComponentPhonyTarget
# $(1) - path to component dir
# $(2) - target to generate (build, clean)
# $(3) - optional dependencies to add
.PHONY: $(notdir $(1))-$(2)
$(notdir $(1))-$(2): $(3) | $(BUILD_DIR_BASE)/$(notdir $(1))
$(notdir $(1))-$(2): | $(BUILD_DIR_BASE)/$(notdir $(1))
@+$(MAKE) -C $(BUILD_DIR_BASE)/$(notdir $(1)) -f $(1)/Makefile COMPONENT_BUILD_DIR=$(BUILD_DIR_BASE)/$(notdir $(1)) $(2)
endef
define GenerateComponentBuildDirTarget
define GenerateComponentTargets
# $(1) - path to component dir
$(BUILD_DIR_BASE)/$(notdir $(1)):
@mkdir -p $(BUILD_DIR_BASE)/$(notdir $(1))
# tell make it can build any component's library by invoking the recursive -build target
# (this target exists for all components even ones which don't build libraries, but it's
# only invoked for the targets whose libraries appear in COMPONENT_LIBRARIES and hence the
# APP_ELF dependencies.)
$(BUILD_DIR_BASE)/$(notdir $(1))/lib$(notdir $(1)).a: $(notdir $(1))-build
$(details) echo "$$^ responsible for $$@" # echo which build target built this file
endef
$(foreach component,$(COMPONENT_PATHS_BUILDABLE),$(eval $(call GenerateComponentBuildDirTarget,$(component))))
$(foreach component,$(COMPONENT_PATHS_BUILDABLE),$(eval $(call GenerateComponentTargets,$(component))))
$(foreach component,$(COMPONENT_PATHS_BUILDABLE),$(eval $(call GenerateComponentTarget,$(component),build,$(PROJECT_PATH)/build/include/sdkconfig.h)))
$(foreach component,$(COMPONENT_PATHS_BUILDABLE),$(eval $(call GenerateComponentTarget,$(component),clean)))
$(foreach component,$(COMPONENT_PATHS_BUILDABLE),$(eval $(call GenerateComponentPhonyTarget,$(component),build)))
$(foreach component,$(COMPONENT_PATHS_BUILDABLE),$(eval $(call GenerateComponentPhonyTarget,$(component),clean)))
app-clean: $(addsuffix -clean,$(notdir $(COMPONENT_PATHS_BUILDABLE)))
$(summary) RM $(APP_ELF)