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1 | ||
2 | # Be silent per default, but 'make V=1' will show all compiler calls. | |
3 | ifneq ($(V),1) | |
4 | Q := @ | |
5 | NULL := 2>/dev/null | |
6 | else | |
7 | QP := \# | |
8 | endif | |
9 | ||
10 | ############################################################################### | |
11 | # Executables | |
12 | ||
13 | CC = avr-gcc | |
14 | LD = avr-gcc | |
15 | OBJCOPY = avr-objcopy | |
16 | OBJDUMP = avr-objdump | |
17 | SIZE = avr-size | |
18 | NM = avr-nm | |
19 | AVRDUDE = avrdude | |
20 | RM = rm -f | |
21 | COPY = cp | |
22 | ||
23 | OPT := -Os | |
24 | CSTD ?= -std=gnu11 | |
25 | ||
26 | ############################################################################### | |
27 | # Define all object files. | |
28 | ||
29 | OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) | |
30 | ||
31 | ############################################################################### | |
32 | # C flags | |
33 | ||
34 | TGT_CFLAGS += -mmcu=$(MCU) $(OPT) $(CSTD) -g | |
35 | TGT_CFLAGS += $(ARCH_FLAGS) | |
36 | TGT_CFLAGS += -Wextra -Wshadow -Wimplicit-function-declaration | |
37 | TGT_CFLAGS += -Wredundant-decls -Wstrict-prototypes | |
38 | TGT_CFLAGS += -fshort-enums -funsigned-bitfields | |
39 | TGT_CFLAGS += -fno-common -ffunction-sections -fdata-sections | |
40 | TGT_CFLAGS += -mrelax | |
41 | ||
42 | ############################################################################### | |
43 | # C & C++ preprocessor common flags | |
44 | ||
45 | TGT_CPPFLAGS += -MMD -MP -MF .dep/$(@F:%.o=%.d) | |
46 | TGT_CPPFLAGS += -Wall -Wundef | |
47 | TGT_CPPFLAGS += -DF_CPU=$(F_CPU)UL $(CDEFS) $(CINCS) | |
48 | ||
49 | ############################################################################### | |
50 | # Linker flags | |
51 | ||
52 | TGT_LDFLAGS += $(ARCH_FLAGS) | |
53 | TGT_LDFLAGS += -Wl,-Map=$(TARGET).map,--cref | |
54 | TGT_LDFLAGS += -Wl,--gc-sections | |
55 | ||
56 | ############################################################################### | |
57 | # Avrdude | |
58 | ||
59 | AVRDUDE_PORT ?= usb | |
60 | AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex | |
61 | AVRDUDE_BASIC = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) | |
62 | AVRDUDE_FLAGS = $(AVRDUDE_BASIC) $(AVRDUDE_NO_VERIFY) $(AVRDUDE_VERBOSE) | |
63 | ||
64 | ############################################################################### | |
65 | ||
66 | .SUFFIXES: .elf .hex .lss .map .sym | |
67 | .SECONDARY: | |
68 | ||
69 | .PHONY: elf hex lss sym size | |
70 | elf: $(TARGET).elf | |
71 | hex: $(TARGET).hex | |
72 | lss: $(TARGET).lss | |
73 | sym: $(TARGET).sym | |
74 | ||
75 | size: $(TARGET).elf | |
76 | @#$(QP)printf " SIZE $(TARGET).elf\n" | |
77 | $(Q)$(SIZE) $(TARGET).elf | |
78 | ||
79 | # Program the device. | |
80 | .PHONY: flash fuses | |
81 | flash: $(TARGET).hex | |
82 | $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) | |
83 | ||
84 | fuses: | |
85 | $(AVRDUDE) $(AVRDUDE_FLAGS) -u -U hfuse:w:$(HFUSE):m -U lfuse:w:$(LFUSE):m | |
86 | ||
87 | %.hex: %.elf | |
88 | @$(QP)printf " OBJCOPY $(*).hex\n" | |
89 | $(Q)$(OBJCOPY) -Oihex -R .eeprom $< $@ | |
90 | ||
91 | # Create extended listing file from ELF output file. | |
92 | %.lss: %.elf | |
93 | @$(QP)printf " OBJDUMP $@\n" | |
94 | $(Q)$(OBJDUMP) -h -S $< > $@ | |
95 | ||
96 | # Create a symbol table from ELF output file. | |
97 | %.sym: %.elf | |
98 | @$(QP)printf " NM $@\n" | |
99 | $(Q)$(NM) -n $< > $@ | |
100 | ||
101 | # Link: create ELF output file from object files. | |
102 | %.elf %.map: $(OBJ) | |
103 | @$(QP)printf " LD $@\n" | |
104 | $(Q)$(LD) $(TGT_CFLAGS) $(CFLAGS) $(TGT_LDFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ | |
105 | ||
106 | ||
107 | # Compile: create object files from C source files. | |
108 | %.o: %.c | |
109 | @$(QP)printf " CC $<\n" | |
110 | $(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $< | |
111 | ||
112 | # Target: clean project. | |
113 | .PHONY: clean distclean dist | |
114 | clean: | |
115 | @$(QP)printf " CLEAN\n" | |
116 | $(Q)$(RM) $(OBJ) $(SRC:.c=.s) .dep/* $(TARGET).elf \ | |
117 | $(TARGET).hex $(TARGET).lss $(TARGET).map $(TARGET).sym | |
118 | ||
119 | distclean: clean | |
120 | @$(QP)printf " DISTCLEAN\n" | |
121 | $(Q)$(RM) $(TARGET).tar.gz | |
122 | ||
123 | dist: build | |
124 | tar cvfz $(TARGET).tar.gz \ | |
125 | $(SRC) \ | |
126 | $(TARGET).hex $(TARGET).eep | |
127 | ||
128 | # Include the dependency files. | |
129 | -include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*) |