01be30f107
As a follow up toc461e20df3("make: Remove version from build output path"), only support building a single version of a single board by default. The build directory can still be specified by passing `BUILD`. Fixes running the `clean` target when `BUILD` is a custom value or `BOARD` isn't set. Fixes:b03c960b4f("make: Reduce build output") Signed-off-by: Tim Crawford <tcrawford@system76.com>
50 lines
1.3 KiB
Makefile
50 lines
1.3 KiB
Makefile
# SPDX-License-Identifier: GPL-3.0-only
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CC = avr-gcc -mmcu=$(EC_VARIANT)
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CFLAGS += -MMD -Os -fstack-usage -Wall -Werror \
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-Wl,--gc-sections -Wl,-u,vfprintf -lprintf_flt
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105523
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_gcc_version = $(shell avr-gcc --version 2>/dev/null)
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ifneq ($(findstring 12.,$(_gcc_version)),)
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CFLAGS += --param=min-pagesize=0
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else ifneq ($(findstring 13.,$(_gcc_version)),)
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CFLAGS += --param=min-pagesize=0
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endif
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OBJCOPY = avr-objcopy
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OBJ=$(sort $(patsubst src/%.c,$(BUILD)/%.o,$(SRC)))
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# Run EC rom in simulator
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sim: $(BUILD)/ec.elf
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simavr $< --mcu $(EC_VARIANT)
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# Convert from Intel Hex file to binary file
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$(BUILD)/ec.rom: $(BUILD)/ec.ihx
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@echo " OBJCOPY $(subst $(BUILD)/,,$@)"
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mkdir -p $(@D)
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$(OBJCOPY) -I ihex -O binary --gap-fill 0xFF $< $@
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# Convert from ELF file to Intel Hex file
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$(BUILD)/ec.ihx: $(BUILD)/ec.elf
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@echo " OBJCOPY $(subst $(BUILD)/,,$@)"
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mkdir -p $(@D)
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$(OBJCOPY) -j .text -j .data -O ihex $< $@
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# Link object files into ELF file
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$(BUILD)/ec.elf: $(OBJ)
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@echo " LINK $(subst $(BUILD)/,,$@)"
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mkdir -p $(@D)
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$(CC) -o $@ $^
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# Compile C files into object files
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$(BUILD)/%.o: src/%.c $(INCLUDE)
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@echo " CC $(subst $(BUILD)/,,$@)"
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mkdir -p $(@D)
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$(CC) $(CFLAGS) -o $@ -c $<
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# Add dependency rules
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DEP = $(OBJ:%.o=%.d)
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-include $(DEP)
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