109 lines
4.3 KiB
Makefile
109 lines
4.3 KiB
Makefile
# Extra make rules for components containing ULP coprocessor code.
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#
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# ULP program(s) gets built and linked into the application.
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# Steps taken here are explained in docs/ulp.rst
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# Define names for files generated at different stages
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ULP_ELF := $(ULP_APP_NAME).elf
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ULP_MAP := $(ULP_ELF:.elf=.map)
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ULP_SYM := $(ULP_ELF:.elf=.sym)
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ULP_BIN := $(ULP_ELF:.elf=.bin)
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ULP_EXPORTS_LD := $(ULP_ELF:.elf=.ld)
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ULP_EXPORTS_HEADER := $(ULP_ELF:.elf=.h)
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ULP_LD_SCRIPT := $(ULP_ELF:.elf=.common.ld)
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ULP_OBJECTS := $(notdir $(ULP_S_SOURCES:.S=.ulp.o))
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ULP_DEP := $(notdir $(ULP_S_SOURCES:.S=.ulp.d)) $(ULP_LD_SCRIPT:.ld=.d)
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ULP_PREPROCESSED := $(notdir $(ULP_S_SOURCES:.S=.ulp.pS))
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ULP_LISTINGS := $(notdir $(ULP_S_SOURCES:.S=.ulp.lst))
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ULP_PREPROCESSOR_ARGS := \
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$(addprefix -I ,$(COMPONENT_INCLUDES)) \
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$(addprefix -I ,$(COMPONENT_EXTRA_INCLUDES)) \
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-I$(COMPONENT_PATH) -D__ASSEMBLER__
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-include $(ULP_DEP)
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# Check the assembler version
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include $(IDF_PATH)/components/ulp/toolchain_ulp_version.mk
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ULP_AS_VER := $(shell $(ULP_AS) --version | sed -E -n 's|GNU assembler \(GNU Binutils\) ([a-z0-9\.-]+)|\1|gp')
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$(info Building ULP app $(ULP_APP_NAME))
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$(info ULP assembler version: $(ULP_AS_VER))
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ifeq (,$(findstring $(ULP_AS_VER), $(SUPPORTED_ULP_ASSEMBLER_VERSION)))
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$(info WARNING: ULP assembler version $(ULP_AS_VER) is not supported.)
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$(info Expected to see version: $(SUPPORTED_ULP_ASSEMBLER_VERSION))
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$(info Please check ESP-IDF ULP setup instructions and update the toolchain, or proceed at your own risk.)
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endif
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# Preprocess LD script used to link ULP program
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$(ULP_LD_SCRIPT): $(ULP_LD_TEMPLATE)
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$(summary) CPP $(patsubst $(PWD)/%,%,$(CURDIR))/$@
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$(CC) $(CPPFLAGS) -MT $(ULP_LD_SCRIPT) -E -P -xc -o $@ $(ULP_PREPROCESSOR_ARGS) $<
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# Generate preprocessed assembly files.
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# To inspect these preprocessed files, add a ".PRECIOUS: %.ulp.pS" rule.
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%.ulp.pS: $(COMPONENT_PATH)/ulp/%.S
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$(summary) CPP $(patsubst $(PWD)/%,%,$<)
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$(CC) $(CPPFLAGS) -MT $(patsubst %.ulp.pS,%.ulp.o,$@) -E -P -xc -o $@ $(ULP_PREPROCESSOR_ARGS) $<
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# Compiled preprocessed files into object files.
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%.ulp.o: %.ulp.pS
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$(summary) ULP_AS $(patsubst $(PWD)/%,%,$(CURDIR))/$@
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$(ULP_AS) -al=$(patsubst %.ulp.o,%.ulp.lst,$@) -o $@ $<
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# Link object files and generate map file
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$(ULP_ELF): $(ULP_OBJECTS) $(ULP_LD_SCRIPT)
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$(summary) ULP_LD $(patsubst $(PWD)/%,%,$(CURDIR))/$@
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$(ULP_LD) -o $@ -A elf32-esp32ulp -Map=$(ULP_MAP) -T $(ULP_LD_SCRIPT) $(ULP_OBJECTS)
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# Dump the list of global symbols in a convenient format.
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$(ULP_SYM): $(ULP_ELF)
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$(ULP_NM) -g -f posix $< > $@
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# Dump the binary for inclusion into the project
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$(COMPONENT_BUILD_DIR)/$(ULP_BIN): $(ULP_ELF)
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$(summary) ULP_BIN $(patsubst $(PWD)/%,%,$@)
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$(ULP_OBJCOPY) -O binary $< $@
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# Left and right side of the rule are the same, but the right side
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# is given as an absolute path.
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# (Make can not resolve such things automatically)
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$(ULP_EXPORTS_HEADER): $(COMPONENT_BUILD_DIR)/$(ULP_EXPORTS_HEADER)
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# Artificial intermediate target to trigger generation of .h and .ld files.
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.INTERMEDIATE: $(COMPONENT_NAME)_ulp_mapgen_intermediate
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$(COMPONENT_BUILD_DIR)/$(ULP_EXPORTS_HEADER)\
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$(COMPONENT_BUILD_DIR)/$(ULP_EXPORTS_LD): $(COMPONENT_NAME)_ulp_mapgen_intermediate
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# Convert the symbols list into a header file and linker export script.
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$(COMPONENT_NAME)_ulp_mapgen_intermediate: $(ULP_SYM)
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$(summary) ULP_MAPGEN $(patsubst $(PWD)/%,%,$(CURDIR))/$<
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$(ULP_MAP_GEN) -s $(ULP_SYM) -o $(ULP_EXPORTS_LD:.ld=)
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# Building the component separately from the project should result in
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# ULP files being built.
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build: $(COMPONENT_BUILD_DIR)/$(ULP_EXPORTS_HEADER) \
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$(COMPONENT_BUILD_DIR)/$(ULP_EXPORTS_LD) \
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$(COMPONENT_BUILD_DIR)/$(ULP_BIN)
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# Objects listed as being dependent on $(ULP_EXPORTS_HEADER) must also
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# depend on $(ULP_SYM), to order build steps correctly.
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$(ULP_EXP_DEP_OBJECTS) : $(ULP_EXPORTS_HEADER) $(ULP_SYM)
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# Finally, set all the variables processed by the build system.
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COMPONENT_EXTRA_CLEAN += $(ULP_OBJECTS) \
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$(ULP_LD_SCRIPT) \
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$(ULP_PREPROCESSED) \
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$(ULP_ELF) $(ULP_BIN) \
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$(ULP_MAP) $(ULP_SYM) \
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$(ULP_EXPORTS_LD) \
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$(ULP_EXPORTS_HEADER) \
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$(ULP_DEP) \
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$(ULP_LISTINGS)
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COMPONENT_EMBED_FILES += $(COMPONENT_BUILD_DIR)/$(ULP_BIN)
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COMPONENT_ADD_LDFLAGS += -l$(COMPONENT_NAME) -T $(COMPONENT_BUILD_DIR)/$(ULP_EXPORTS_LD)
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COMPONENT_EXTRA_INCLUDES += $(COMPONENT_BUILD_DIR)
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