LUFA/Build/lufa.build.in

   1 #
   2 #             LUFA Library
   3 #     Copyright (C) Dean Camera, 2012.
   4 #
   5 #  dean [at] fourwalledcubicle [dot] com
   6 #           www.lufa-lib.org
   7 #
   8
   9 LUFA_BUILD_MODULES        += BUILD
  10 LUFA_BUILD_TARGETS        += size symbol-sizes all elf hex lss clean
  11 LUFA_BUILD_MANDATORY_VARS += TARGET ARCH MCU SRC F_USB LUFA_PATH
  12 LUFA_BUILD_OPTIONAL_VARS  += BOARD OPTIMIZATION C_STANDARD CPP_STANDARD F_CPU C_FLAGS CPP_FLAGS ASM_FLAGS CC_FLAGS LD_FLAGS
  13
  14 # -----------------------------------------------------------------------------
  15 #               LUFA GCC Compiler Buildsystem Makefile Module.
  16 # -----------------------------------------------------------------------------
  17 # DESCRIPTION:
  18 #   Provides a set of targets to build a C, C++ and/or Assembly application
  19 #   via the AVR-GCC compiler.
  20 # -----------------------------------------------------------------------------
  21 # TARGETS:
  22 #
  23 #    size                      - List built application size
  24 #    symbol-sizes              - Print application symbols from the binary ELF
  25 #                                file as a list sorted by size in bytes
  26 #    all                       - Build application and list size
  27 #    elf                       - Build application ELF debug object file
  28 #    hex                       - Build application HEX object files
  29 #    lss                       - Build application LSS assembly listing file
  30 #    clean                     - Remove output files
  31 #
  32 # MANDATORY PARAMETERS:
  33 #
  34 #    TARGET                    - Application name
  35 #    ARCH                      - Device architecture name
  36 #    MCU                       - Microcontroller device model name
  37 #    SRC                       - List of input source files (*.c, *.cpp, *.S)
  38 #    F_USB                     - Speed of the input clock of the USB controller
  39 #                                in Hz
  40 #    LUFA_PATH                 - Path to the LUFA library core
  41 #
  42 # OPTIONAL PARAMETERS:
  43 #
  44 #    BOARD                     - LUFA board hardware
  45 #    OPTIMIZATION              - Optimization level
  46 #    C_STANDARD                - C Language Standard to use
  47 #    CPP_STANDARD              - C++ Language Standard to use
  48 #    F_CPU                     - Speed of the CPU, in Hz
  49 #    C_FLAGS                   - Flags to pass to the C compiler only
  50 #    CPP_FLAGS                 - Flags to pass to the C++ compiler only
  51 #    ASM_FLAGS                 - Flags to pass to the assembler only
  52 #    CC_FLAGS                  - Common flags to pass to the C/C++ compiler and
  53 #                                assembler
  54 #    LD_FLAGS                  - Flags to pass to the linker
  55 #
  56 # -----------------------------------------------------------------------------
  57
  58 # Sanity-check values of mandatory user-supplied variables
  59 MCU            ?= $(error Makefile MCU value not set)
  60 TARGET         ?= $(error Makefile TARGET value not set)
  61 ARCH           ?= $(error Makefile ARCH value not set)
  62 SRC            ?= $(error Makefile SRC value not set)
  63 F_USB          ?= $(error Makefile F_USB value not set)
  64 LUFA_PATH      ?= $(error Makefile LUFA_PATH value not set)
  65
  66 ifeq ($(MCU),)
  67    $(error Makefile MCU option cannot be blank)
  68 endif
  69 ifeq ($(TARGET),)
  70    $(error Makefile TARGET option cannot be blank)
  71 endif
  72 ifeq ($(ARCH),)
  73    $(error Makefile ARCH option cannot be blank)
  74 endif
  75 ifeq ($(F_USB),)
  76    $(error Makefile F_USB option cannot be blank)
  77 endif
  78
  79 # Default values of optionally user-supplied variables
  80 BOARD           ?= NONE
  81 OPTIMIZATION    ?= s
  82 F_CPU           ?=
  83 C_STANDARD      ?= gnu99
  84 CPP_STANDARD    ?= gnu++98
  85 C_FLAGS         ?=
  86 CPP_FLAGS       ?=
  87 ASM_FLAGS       ?=
  88 CC_FLAGS        ?=
  89
  90 # Determine the utility prefix to use for the selected architecture
  91 ifeq ($(ARCH), AVR8)
  92    CROSS        := avr-
  93 else ifeq ($(ARCH), XMEGA)
  94    CROSS        := avr-
  95 else ifeq ($(ARCH), UC3)
  96    CROSS        := avr32-
  97 else
  98     $(error Unsupported architecture "$(ARCH)".)
  99 endif
 100
 101 # Output Messages
 102 MSG_BUILD_BEGIN  := Begin compilation of project \"$(TARGET)\"...
 103 MSG_BUILD_END    := Finished building project \"$(TARGET)\".
 104 MSG_COMPILE_CMD  := ' [CC]      :'
 105 MSG_ASSEMBLE_CMD := ' [AS]      :'
 106 MSG_NM_CMD       := ' [NM]      :'
 107 MSG_REMOVE_CMD   := ' [RM]      :'
 108 MSG_LINKER_CMD   := ' [LNK]     :'
 109 MSG_SIZE_CMD     := ' [SIZE]    :'
 110 MSG_OBJCPY_CMD   := ' [OBJCPY]  :'
 111 MSG_OBJDMP_CMD   := ' [OBJDMP]  :'
 112
 113 # Convert input source file list to differentiate them by type
 114 C_SOURCE   = $(filter %.c, $(SRC))
 115 CPP_SOURCE = $(filter %.cpp, $(SRC))
 116 ASM_SOURCE = $(filter %.S, $(SRC))
 117
 118 # Convert input source filenames into a list of required output object files
 119 OBJECT_FILES     = $(filter %.o, $(C_SOURCE:%.c=%.o) $(CPP_SOURCE:%.cpp=%.o) $(ASM_SOURCE:%.S=%.o))
 120 DEPENDENCY_FILES = $(OBJECT_FILES:%=%.d)
 121
 122 # Create a list of flags to pass to the compiler
 123 ifeq ($(ARCH), AVR8)
 124    CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 125 else ifeq ($(ARCH), XMEGA)
 126    CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 127 else ifeq ($(ARCH), UC3)
 128    CC_FLAGS += -mpart=$(MCU) -g3 -masm-addr-pseudos
 129 endif
 130 CC_FLAGS += -Wall -fno-strict-aliasing -funsigned-char -funsigned-bitfields -ffunction-sections
 131 CC_FLAGS += -I. -I$(patsubst %/,%,$(LUFA_PATH))/..
 132 CC_FLAGS += -DARCH=ARCH_$(ARCH) -DBOARD=BOARD_$(BOARD) -DF_USB=$(F_USB)UL
 133 ifneq ($(F_CPU),)
 134    CC_FLAGS += -DF_CPU=$(F_CPU)UL
 135 endif
 136
 137 # Additional language specific compiler flags
 138 C_FLAGS   += -O$(OPTIMIZATION) -std=$(C_STANDARD) -MMD -MP -MF $@.d -Wstrict-prototypes
 139 CPP_FLAGS += -O$(OPTIMIZATION) -std=$(CPP_STANDARD) -MMD -MP -MF $@.d
 140
 141 # Create a list of flags to pass to the linker
 142 LD_FLAGS += -lm -Wl,-Map=$(TARGET).map,--cref -Wl,--gc-sections
 143 ifeq ($(ARCH), UC3)
 144    LD_FLAGS += --rodata-writable --direct-data
 145 else
 146    LD_FLAGS += -Wl,--relax
 147 endif
 148
 149 # Create a list of unknown source file types, if any are found throw an error
 150 UNKNOWN_SOURCE = $(filter-out $(C_SOURCE) $(CPP_SOURCE) $(ASM_SOURCE), $(SRC))
 151 ifneq ($(UNKNOWN_SOURCE),)
 152    $(error Unknown input source formats: $(UNKNOWN_SOURCE))
 153 endif
 154
 155 # Determine flags to pass to the size utility based on its reported features
 156 SIZE_MCU_FLAG    := $(shell $(CROSS)size --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
 157 SIZE_FORMAT_FLAG := $(shell $(CROSS)size --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
 158
 159
 160 begin:
 161         @echo ""
 162         @echo $(MSG_BUILD_BEGIN)
 163         @echo ""
 164
 165 end:
 166         @echo ""
 167         @echo $(MSG_BUILD_END)
 168         @echo ""
 169
 170 gcc_version:
 171         @$(CROSS)gcc --version
 172
 173 check_source:
 174         @for f in $(SRC); do \
 175                 if [ ! -f $$f ]; then \
 176                         echo "Error: Source file not found: $$f"; \
 177                         exit 1; \
 178                 fi; \
 179          done
 180
 181 size: $(TARGET).elf
 182         @echo $(MSG_SIZE_CMD) Determining size of \"$(TARGET).elf\"
 183         @if test -f $(TARGET).elf; then \
 184             $(CROSS)size $(SIZE_MCU_FLAG) $(SIZE_FORMAT_FLAG) $(TARGET).elf ; 2>/dev/null; \
 185          fi
 186
 187 symbol-sizes: $(TARGET).elf
 188         @echo $(MSG_NM_CMD) Extracting \"$(TARGET).elf\" symbols with decimal byte sizes
 189         avr-nm --size-sort --demangle --radix=d $(TARGET).elf
 190
 191 clean:
 192         @echo $(MSG_REMOVE_CMD) Removing object files of \"$(TARGET)\"
 193         rm -f $(OBJECT_FILES)
 194         @echo $(MSG_REMOVE_CMD) Removing dependency files of \"$(TARGET)\"
 195         rm -f $(DEPENDENCY_FILES)
 196         @echo $(MSG_REMOVE_CMD) Removing output files of \"$(TARGET)\"
 197         rm -f $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).map $(TARGET).lss
 198
 199 all: begin check_source gcc_version elf hex lss size end
 200
 201 elf: $(TARGET).elf
 202 hex: $(TARGET).hex $(TARGET).eep
 203 lss: $(TARGET).lss
 204
 205 %.o: %.c $(MAKEFILE_LIST)
 206         @echo $(MSG_COMPILE_CMD) Compiling C file \"$<\"
 207         $(CROSS)gcc -c $(CC_FLAGS) $(C_FLAGS) $< -o $@
 208
 209 %.o: %.cpp $(MAKEFILE_LIST)
 210         @echo $(MSG_COMPILE_CMD) Compiling C++ file \"$<\"
 211         $(CROSS)gcc -c $(CC_FLAGS) $(CPP_FLAGS) -x c++ $< -o $@
 212
 213 %.o: %.S $(MAKEFILE_LIST)
 214         @echo $(MSG_ASSEMBLE_CMD) Assembling \"$<\"
 215         $(CROSS)gcc -c $(CC_FLAGS) $(ASM_FLAGS) -x assembler-with-cpp $< -o $@
 216
 217 .PRECIOUS : $(OBJECT_FILES)
 218 %.elf: $(OBJECT_FILES)
 219         @echo $(MSG_LINKER_CMD) Linking object files into \"$@\"
 220         $(CROSS)gcc $(CC_FLAGS) $(LD_FLAGS) $^ -o $@
 221
 222 %.hex: %.elf
 223         @echo $(MSG_OBJCPY_CMD) Extracting HEX file data from \"$<\"
 224         $(CROSS)objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
 225
 226 %.eep: %.elf
 227         @echo $(MSG_OBJCPY_CMD) Extracting EEP file data from \"$<\"
 228         $(CROSS)objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex $< $@ || exit 0
 229
 230 %.lss: %.elf
 231         @echo $(MSG_OBJDMP_CMD) Extracting LSS file data from \"$<\"
 232         $(CROSS)objdump -h -S -z $< > $@
 233
 234 # Include build dependency files
 235 -include $(DEPENDENCY_FILES)
 236
 237 # Phony build targets for this module
 238 .PHONY: begin end gcc_version check_source size symbol-sizes elf hex lss clean