Add linkermap for size analysis (#1136)
* add NO_LTO option to make * add linkermap submodule and linkermap target * add linkermap to ci build * linkermap doesn't work with esp32sx map file yet * add note for linkermap target
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@@ -5,12 +5,11 @@
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# Set all as default goal
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.DEFAULT_GOAL := all
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# ESP32-SX and RP2040 has its own CMake build system
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ifneq ($(FAMILY),esp32s2)
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ifneq ($(FAMILY),esp32s3)
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ifneq ($(FAMILY),rp2040)
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# ESP32-Sx and RP2040 has its own CMake build system
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ifeq (,$(findstring $(FAMILY),esp32s2 esp32s3 rp2040))
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# ---------------------------------------
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# GNU Make build system
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# Compiler Flags
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# ---------------------------------------
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# libc
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@@ -44,6 +43,12 @@ INC += $(TOP)/src
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CFLAGS += $(addprefix -I,$(INC))
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# LTO makes it difficult to analyze map file for optimizing size purpose
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# We will run this option in ci
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ifeq ($(NO_LTO),1)
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CFLAGS := $(filter-out -flto,$(CFLAGS))
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endif
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LDFLAGS += $(CFLAGS) -Wl,-T,$(TOP)/$(LD_FILE) -Wl,-Map=$@.map -Wl,-cref -Wl,-gc-sections
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ifneq ($(SKIP_NANOLIB), 1)
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LDFLAGS += -specs=nosys.specs -specs=nano.specs
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@@ -67,6 +72,10 @@ $(info LDFLAGS $(LDFLAGS)) $(info )
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$(info ASFLAGS $(ASFLAGS)) $(info )
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endif
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# ---------------------------------------
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# Rules
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# ---------------------------------------
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all: $(BUILD)/$(PROJECT).bin $(BUILD)/$(PROJECT).hex size
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uf2: $(BUILD)/$(PROJECT).uf2
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@@ -126,11 +135,17 @@ $(BUILD)/obj/%_asm.o: %.S
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@echo AS $(notdir $@)
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@$(CC) -x assembler-with-cpp $(ASFLAGS) -c -o $@ $<
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endif # GNU Make
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size: $(BUILD)/$(PROJECT).elf
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-@echo ''
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@$(SIZE) $<
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-@echo ''
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# linkermap must be install previously at https://github.com/hathach/linkermap
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linkermap: $(BUILD)/$(PROJECT).elf
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@linkermap -v $<.map
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.PHONY: clean
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clean:
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ifeq ($(CMDEXE),1)
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@@ -139,10 +154,6 @@ else
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$(RM) -rf $(BUILD)
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endif
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endif
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endif
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endif # GNU Make
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# ---------------------------------------
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# Flash Targets
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# ---------------------------------------
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@@ -204,4 +215,4 @@ copy-artifact: $(BIN)
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# Print out the value of a make variable.
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# https://stackoverflow.com/questions/16467718/how-to-print-out-a-variable-in-makefile
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print-%:
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@echo $* = $($*)
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@echo $* = $($*)
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