Makefile

   1 # WinAVR Sample makefile written by Eric B. Weddington, Jörg Wunsch, et al.
   2 # Modified (bringing often-changed options to the top) by Elliot Williams
   3
   4 # make all = Make software and program
   5 # make clean = Clean out built project files.
   6 # make program = Download the hex file to the device, using avrdude.  Please
   7 #                customize the avrdude settings below first!
   8
   9 # Microcontroller Type
  10 MCU = atmega2560
  11
  12 # Target file name (without extension).
  13 TARGET = cerebrum_firmware
  14
  15 # Programming hardware: type avrdude -c ?
  16 # to get a full listing.
  17 AVRDUDE_PROGRAMMER = stk500v2
  18
  19 AVRDUDE_PORT = /dev/ttyACM0 -b 115200
  20
  21 ############# Don't need to change below here for most purposes  (Elliot)
  22
  23 # Optimization level, can be [0, 1, 2, 3, s]. 0 turns off optimization.
  24 # (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
  25 OPT = s
  26
  27 # Output format. (can be srec, ihex, binary)
  28 FORMAT = ihex
  29
  30 # List C source files here. (C dependencies are automatically generated.)
  31 SRC = $(TARGET).c uart.c
  32
  33 # List Assembler source files here.
  34 # Make them always end in a capital .S.  Files ending in a lowercase .s
  35 # will not be considered source files but generated files (assembler
  36 # output from the compiler), and will be deleted upon "make clean"!
  37 # Even though the DOS/Win* filesystem matches both .s and .S the same,
  38 # it will preserve the spelling of the filenames, and gcc itself does
  39 # care about how the name is spelled on its command-line.
  40 ASRC =
  41
  42
  43 # List any extra directories to look for include files here.
  44 #     Each directory must be seperated by a space.
  45 EXTRAINCDIRS =
  46
  47
  48 # Optional compiler flags.
  49 #  -g:        generate debugging information (for GDB, or for COFF conversion)
  50 #  -O*:       optimization level
  51 #  -f...:     tuning, see gcc manual and avr-libc documentation
  52 #  -Wall...:  warning level
  53 #  -Wa,...:   tell GCC to pass this to the assembler.
  54 #    -ahlms:  create assembler listing
  55 CFLAGS = -g -O$(OPT) \
  56 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums \
  57 -Wall -Wstrict-prototypes \
  58 -Wa,-adhlns=$(<:.c=.lst) \
  59 $(patsubst %,-I%,$(EXTRAINCDIRS))
  60
  61
  62 # Set a "language standard" compiler flag.
  63 #   Unremark just one line below to set the language standard to use.
  64 #   gnu99 = C99 + GNU extensions. See GCC manual for more information.
  65 #CFLAGS += -std=c89
  66 #CFLAGS += -std=gnu89
  67 #CFLAGS += -std=c99
  68 CFLAGS += -std=gnu99 -DF_CPU=16000000UL
  69
  70
  71
  72 # Optional assembler flags.
  73 #  -Wa,...:   tell GCC to pass this to the assembler.
  74 #  -ahlms:    create listing
  75 #  -gstabs:   have the assembler create line number information; note that
  76 #             for use in COFF files, additional information about filenames
  77 #             and function names needs to be present in the assembler source
  78 #             files -- see avr-libc docs [FIXME: not yet described there]
  79 ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs
  80
  81
  82
  83 # Optional linker flags.
  84 #  -Wl,...:   tell GCC to pass this to linker.
  85 #  -Map:      create map file
  86 #  --cref:    add cross reference to  map file
  87 LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
  88
  89
  90
  91 # Additional libraries
  92
  93 # Minimalistic printf version
  94 #LDFLAGS += -Wl,-u,vfprintf -lprintf_min
  95
  96 # Floating point printf version (requires -lm below)
  97 #LDFLAGS += -Wl,-u,vfprintf -lprintf_flt
  98
  99 # -lm = math library
 100 LDFLAGS += -lm
 101
 102
 103 # Programming support using avrdude. Settings and variables.
 104
 105
 106 AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
 107 #AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
 108
 109 AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
 110
 111 # Uncomment the following if you want avrdude's erase cycle counter.
 112 # Note that this counter needs to be initialized first using -Yn,
 113 # see avrdude manual.
 114 #AVRDUDE_ERASE += -y
 115
 116 # Uncomment the following if you do /not/ wish a verification to be
 117 # performed after programming the device.
 118 #AVRDUDE_FLAGS += -V
 119
 120 # Increase verbosity level.  Please use this when submitting bug
 121 # reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude>
 122 # to submit bug reports.
 123 #AVRDUDE_FLAGS += -v -v
 124
 125 # Define programs and commands.
 126 SHELL = sh
 127
 128 CC = avr-gcc
 129
 130 OBJCOPY = avr-objcopy
 131 OBJDUMP = avr-objdump
 132 SIZE = avr-size
 133
 134
 135 # Programming support using avrdude.
 136 AVRDUDE = avrdude
 137
 138
 139 REMOVE = rm -f
 140 COPY = cp
 141
 142 HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
 143 ELFSIZE = $(SIZE) -A $(TARGET).elf
 144
 145
 146
 147 # Define Messages
 148 # English
 149 MSG_ERRORS_NONE = Errors: none
 150 MSG_BEGIN = -------- begin --------
 151 MSG_END = --------  end  --------
 152 MSG_SIZE_BEFORE = Size before:
 153 MSG_SIZE_AFTER = Size after:
 154 MSG_COFF = Converting to AVR COFF:
 155 MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
 156 MSG_FLASH = Creating load file for Flash:
 157 MSG_EEPROM = Creating load file for EEPROM:
 158 MSG_EXTENDED_LISTING = Creating Extended Listing:
 159 MSG_SYMBOL_TABLE = Creating Symbol Table:
 160 MSG_LINKING = Linking:
 161 MSG_COMPILING = Compiling:
 162 MSG_ASSEMBLING = Assembling:
 163 MSG_CLEANING = Cleaning project:
 164
 165
 166
 167
 168 # Define all object files.
 169 OBJ = $(SRC:.c=.o) $(ASRC:.S=.o)
 170
 171 # Define all listing files.
 172 LST = $(ASRC:.S=.lst) $(SRC:.c=.lst)
 173
 174 # Combine all necessary flags and optional flags.
 175 # Add target processor to flags.
 176 ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS)
 177 ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
 178
 179
 180
 181 # Default target: make program!
 182 all: begin gccversion sizebefore $(TARGET).elf $(TARGET).hex $(TARGET).eep \
 183         $(TARGET).lss $(TARGET).sym sizeafter finished end
 184 #       $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
 185
 186 # Eye candy.
 187 # AVR Studio 3.x does not check make's exit code but relies on
 188 # the following magic strings to be generated by the compile job.
 189 begin:
 190         @echo
 191         @echo $(MSG_BEGIN)
 192
 193 finished:
 194         @echo $(MSG_ERRORS_NONE)
 195
 196 end:
 197         @echo $(MSG_END)
 198         @echo
 199
 200
 201 # Display size of file.
 202 sizebefore:
 203         @if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi
 204
 205 sizeafter:
 206         @if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi
 207
 208
 209
 210 # Display compiler version information.
 211 gccversion :
 212         @$(CC) --version
 213
 214
 215
 216
 217 # Convert ELF to COFF for use in debugging / simulating in
 218 # AVR Studio or VMLAB.
 219 COFFCONVERT=$(OBJCOPY) --debugging \
 220         --change-section-address .data-0x800000 \
 221         --change-section-address .bss-0x800000 \
 222         --change-section-address .noinit-0x800000 \
 223         --change-section-address .eeprom-0x810000
 224
 225
 226 coff: $(TARGET).elf
 227         @echo
 228         @echo $(MSG_COFF) $(TARGET).cof
 229         $(COFFCONVERT) -O coff-avr $< $(TARGET).cof
 230
 231
 232 extcoff: $(TARGET).elf
 233         @echo
 234         @echo $(MSG_EXTENDED_COFF) $(TARGET).cof
 235         $(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof
 236
 237
 238
 239
 240 # Program the device.
 241 program: $(TARGET).hex $(TARGET).eep
 242 #       ./pokedtr
 243         $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
 244
 245
 246
 247
 248 # Create final output files (.hex, .eep) from ELF output file.
 249 %.hex: %.elf
 250         @echo
 251         @echo $(MSG_FLASH) $@
 252         $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
 253
 254 %.eep: %.elf
 255         @echo
 256         @echo $(MSG_EEPROM) $@
 257         -$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
 258         --change-section-lma .eeprom=0 -O $(FORMAT) $< $@
 259
 260 # Create extended listing file from ELF output file.
 261 %.lss: %.elf
 262         @echo
 263         @echo $(MSG_EXTENDED_LISTING) $@
 264         $(OBJDUMP) -h -S $< > $@
 265
 266 # Create a symbol table from ELF output file.
 267 %.sym: %.elf
 268         @echo
 269         @echo $(MSG_SYMBOL_TABLE) $@
 270         avr-nm -n $< > $@
 271
 272
 273
 274 # Link: create ELF output file from object files.
 275 .SECONDARY : $(TARGET).elf
 276 .PRECIOUS : $(OBJ)
 277 %.elf: $(OBJ)
 278         @echo
 279         @echo $(MSG_LINKING) $@
 280         $(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS)
 281
 282
 283 # Compile: create object files from C source files.
 284 %.o : %.c
 285         @echo
 286         @echo $(MSG_COMPILING) $<
 287         $(CC) -c $(ALL_CFLAGS) $< -o $@
 288
 289
 290 # Compile: create assembler files from C source files.
 291 %.s : %.c
 292         $(CC) -S $(ALL_CFLAGS) $< -o $@
 293
 294
 295 # Assemble: create object files from assembler source files.
 296 %.o : %.S
 297         @echo
 298         @echo $(MSG_ASSEMBLING) $<
 299         $(CC) -c $(ALL_ASFLAGS) $< -o $@
 300
 301
 302
 303
 304
 305
 306 # Target: clean project.
 307 clean: begin clean_list finished end
 308
 309 clean_list :
 310         @echo
 311         @echo $(MSG_CLEANING)
 312         $(REMOVE) $(TARGET).hex
 313         $(REMOVE) $(TARGET).eep
 314         $(REMOVE) $(TARGET).obj
 315         $(REMOVE) $(TARGET).cof
 316         $(REMOVE) $(TARGET).elf
 317         $(REMOVE) $(TARGET).map
 318         $(REMOVE) $(TARGET).obj
 319         $(REMOVE) $(TARGET).a90
 320         $(REMOVE) $(TARGET).sym
 321         $(REMOVE) $(TARGET).lnk
 322         $(REMOVE) $(TARGET).lss
 323         $(REMOVE) $(OBJ)
 324         $(REMOVE) $(LST)
 325         $(REMOVE) $(SRC:.c=.s)
 326         $(REMOVE) $(SRC:.c=.d)
 327         $(REMOVE) *~
 328
 329 # Automatically generate C source code dependencies.
 330 # (Code originally taken from the GNU make user manual and modified
 331 # (See README.txt Credits).)
 332 #
 333 # Note that this will work with sh (bash) and sed that is shipped with WinAVR
 334 # (see the SHELL variable defined above).
 335 # This may not work with other shells or other seds.
 336 #
 337 %.d: %.c
 338         set -e; $(CC) -MM $(ALL_CFLAGS) $< \
 339         | sed 's,\(.*\)\.o[ :]*,\1.o \1.d : ,g' > $@; \
 340         [ -s $@ ] || rm -f $@
 341
 342
 343 # Remove the '-' if you want to see the dependency files generated.
 344 -include $(SRC:.c=.d)
 345
 346
 347
 348 # Listing of phony targets.
 349 .PHONY : all begin finish end sizebefore sizeafter gccversion coff extcoff \
 350         clean clean_list program
 351
 352