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