54 lines
1.6 KiB
Makefile
54 lines
1.6 KiB
Makefile
INCLUDES+=-I$(ROOT_DIR)
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LINKER_FILE=hwstub.lds
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TMP_LDS=$(BUILD_DIR)/link.lds
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TMP_MAP=$(BUILD_DIR)/hwstub.map
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CFLAGS=$(GCCOPTS) $(DEFINES) -W -Wall -Wundef -O -nostdlib -ffreestanding -Wstrict-prototypes -pipe -std=gnu99 -fomit-frame-pointer -Wno-pointer-sign -Wno-override-init $(INCLUDES)
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ASFLAGS=$(CFLAGS) -D__ASSEMBLER__
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LDFLAGS=-lgcc -Os -nostdlib -T$(TMP_LDS) -Wl,-Map,$(TMP_MAP) $(INCLUDES) -L$(BUILD_DIR)
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SRC:=$(shell cat $(ROOT_DIR)/SOURCES | $(CC) $(INCLUDES) \
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$(DEFINES) -E -P -include "config.h" - 2>/dev/null \
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| grep -v "^\#")
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SRC:=$(foreach src,$(SRC),$(BUILD_DIR)/$(src))
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OBJ=$(SRC:.c=.o)
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OBJ:=$(OBJ:.S=.o)
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OBJ_EXCEPT_CRT0=$(filter-out $(BUILD_DIR)/%/crt0.o,$(OBJ))
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EXEC_ELF=$(BUILD_DIR)/hwstub.elf
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EXEC_BIN=$(BUILD_DIR)/hwstub.bin
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DEPS=$(foreach obj,$(OBJ),$(obj).d)
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EXEC+=$(EXEC_ELF) $(EXEC_BIN)
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SILENT?=@
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PRINTS=$(SILENT)$(call info,$(1))
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all: $(EXEC)
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# pull in dependency info for *existing* .o files
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-include $(DEPS)
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$(BUILD_DIR)/%.o: $(ROOT_DIR)/%.c
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$(SILENT)mkdir -p $(dir $@)
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$(call PRINTS,CC $(<F))
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$(SILENT)$(CC) $(CFLAGS) -c -o $@ $<
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$(SILENT)$(CC) -MM $(CFLAGS) $< -MT $@ > $@.d
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$(BUILD_DIR)/%.o: $(ROOT_DIR)/%.S
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$(call PRINTS,AS $(<F))
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$(SILENT)mkdir -p $(dir $@)
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$(SILENT)$(AS) $(ASFLAGS) -c -o $@ $<
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$(TMP_LDS): $(LINKER_FILE)
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$(call PRINTS,PP $(<F))
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$(SILENT)$(CC) $(CFLAGS) -E -x c - < $< | sed '/#/d' > $@
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$(EXEC_ELF): $(OBJ) $(TMP_LDS)
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$(call PRINTS,LD $(@F))
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$(SILENT)$(LD) $(LDFLAGS) -o $@ $(OBJ_EXCEPT_CRT0)
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$(EXEC_BIN): $(EXEC_ELF)
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$(call PRINTS,OC $(@F))
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$(SILENT)$(OC) -O binary $< $@
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clean:
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$(SILENT)rm -rf $(OBJ) $(DEPS) $(EXEC) $(TMP_LDS) $(TMP_MAP)
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