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 checksource all elf hex 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 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 application size
  24 #    checksource               - Check existance of listed input source files
  25 #    all                       - Build application and list size
  26 #    elf                       - Build application ELF debug object file
  27 #    hex                       - Build application HEX object files
  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/.c++, .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      ?= $(error Makefile LUFA_PATH value not set.)
  63
  64 # Default values of optionally user-supplied variables
  65 BOARD          ?= NONE
  66 OPTIMIZATION   ?= s
  67 F_CPU          ?=
  68 C_STANDARD     ?= gnu99
  69 CPP_STANDARD   ?= gnu++98
  70 C_FLAGS        ?=
  71 CPP_FLAGS      ?=
  72 ASM_FLAGS      ?=
  73 CC_FLAGS       ?=
  74
  75 # Output Messages
  76 MSG_BUILD_BEGIN = Begin compilation of project \"$(TARGET)\"...
  77 MSG_BUILD_END   = Finished building project \"$(TARGET)\"...
  78 MSG_COMPILE_CMD = ' [CC]      :'
  79 MSG_REMOVE_CMD  = ' [RM]      :'
  80 MSG_LINKER_CMD  = ' [LNK]     :'
  81 MSG_SIZE_CMD    = ' [SIZE]    :'
  82 MSG_OBJCPY_CMD  = ' [OBJCPY]  :'
  83 MSG_OBJDMP_CMD  = ' [OBJDMP]  :'
  84
  85 # Convert input source file list to differentiate them by type
  86 C_SOURCE   = $(filter %.c, $(SRC))
  87 CPP_SOURCE = $(filter %.cpp, $(SRC))
  88 ASM_SOURCE = $(filter %.S, $(SRC))
  89
  90 # Convert input source filenames into a list of required output object files
  91 OBJECT_FILES = $(filter %.o, $(C_SOURCE:%.c=%.o) $(CPP_SOURCE:%.cpp=%.o) $(ASM_SOURCE:%.S=%.o))
  92
  93 # Create a list of flags to pass to the compiler
  94 ifeq ($(ARCH), AVR8)
  95  CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
  96  CROSS     = avr-
  97 else ifeq ($(ARCH), XMEGA)
  98  CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
  99  CROSS     = avr-
 100 else ifeq ($(ARCH), UC3)
 101  CC_FLAGS += -mpart=$(MCU) -g3 -masm-addr-pseudos
 102  CROSS     = avr32-
 103 else
 104   $(error Unsupported architecture.)
 105 endif
 106 CC_FLAGS += -Wall -fno-strict-aliasing -funsigned-char -funsigned-bitfields -ffunction-sections
 107 CC_FLAGS += -I. -I$(patsubst %/,%,$(LUFA_PATH))/..
 108 CC_FLAGS += -DARCH=ARCH_$(ARCH) -DBOARD=BOARD_$(BOARD) -DF_USB=$(F_USB)UL
 109 ifneq ($(F_CPU),)
 110    CC_FLAGS += -DF_CPU=$(F_CPU)UL
 111 endif
 112
 113 # Additional language specific compiler flags
 114 C_FLAGS   += -Wstrict-prototypes
 115
 116 # Create a list of flags to pass to the linker
 117 LD_FLAGS += -Wl,-Map=$(TARGET).map,--cref -Wl,--gc-sections -lm
 118 ifneq ($(F_CPU), UC3)
 119    LD_FLAGS += -Wl,--relax
 120 endif
 121
 122 # Create a list of unknown source file types, if any are found throw an error
 123 UNKNOWN_SOURCE = $(filter-out $(C_SOURCE) $(CPP_SOURCE) $(ASM_SOURCE), $(SRC))
 124 ifneq ($(UNKNOWN_SOURCE),)
 125    $(error Unknown input source formats: $(UNKNOWN_SOURCE))
 126 endif
 127
 128 # Determine flags to pass to the size utility based on its reported features
 129 SIZE_MCU_FLAG    = $(shell avr-size --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
 130 SIZE_FORMAT_FLAG = $(shell avr-size --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
 131
 132
 133 begin:
 134         @echo ""
 135         @echo $(MSG_BUILD_BEGIN)
 136
 137 end:
 138         @echo $(MSG_BUILD_END)
 139         @echo ""
 140
 141 checksource:
 142         @for f in $(SRC) $(CPPSRC) $(ASRC); do \
 143                 if [ -f $$f ]; then \
 144                         echo "Found Source File: $$f" ; \
 145                 else \
 146                         echo "Source File Not Found: $$f" ; \
 147                 fi; \
 148          done
 149
 150 size:
 151         @echo $(MSG_SIZE_CMD) Determining size of \"$(TARGET).elf\"
 152         @if test -f $(TARGET).elf; then \
 153             avr-size $(SIZE_MCU_FLAG) $(SIZE_FORMAT_FLAG) $(TARGET).elf ; 2>/dev/null; \
 154          fi
 155
 156 .PHONY: begin elf hex lss size end
 157 all: begin elf hex lss size end
 158
 159 elf: $(TARGET).elf
 160 hex: $(TARGET).hex $(TARGET).eep
 161 lss: $(TARGET).lss
 162
 163 %.o: %.c
 164         @echo $(MSG_COMPILE_CMD) Compiling C file \"$<\"
 165         $(CROSS)gcc -c $(CC_FLAGS) $(C_FLAGS) -O$(OPTIMIZATION) -std=$(C_STANDARD) $< -o $@
 166
 167 %.o: %.cpp
 168         @echo $(MSG_COMPILE_CMD) Compiling C++ file \"$<\"
 169         $(CROSS)gcc -c $(CC_FLAGS) $(CPP_FLAGS) -O$(OPTIMIZATION) -std=$(CPP_STANDARD) -x c++ $< -o $@
 170
 171 %.o: %.S
 172         @echo $(MSG_COMPILE_CMD) Assembling \"$<\"
 173         $(CROSS)gcc -c $(CC_FLAGS) $(ASM_FLAGS) -x assembler-with-cpp $< -o $@
 174
 175 .PRECIOUS : $(OBJECT_FILES)
 176 %.elf: $(OBJECT_FILES)
 177         @echo $(MSG_LINKER_CMD) Linking object files into \"$@\"
 178         $(CROSS)gcc $^ $(CC_FLAGS) $(LD_FLAGS) -o $@
 179
 180 %.hex: %.elf
 181         @echo $(MSG_OBJCPY_CMD) Extracting HEX file data from \"$<\"
 182         $(CROSS)objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
 183
 184 %.eep: %.elf
 185         @echo $(MSG_OBJCPY_CMD) Extracting EEP file data from \"$<\"
 186         $(CROSS)objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex $< $@ || exit 0
 187
 188 %.lss: %.elf
 189         @echo $(MSG_OBJDMP_CMD) Extracting LSS file data from \"$<\"
 190         $(CROSS)objdump -h -S -z $< > $@
 191
 192 clean:
 193         @echo $(MSG_REMOVE_CMD) Removing object files \"$(notdir $(OBJECT_FILES))\"
 194         rm -f $(OBJECT_FILES)
 195         @echo $(MSG_REMOVE_CMD) Removing output files \"$(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).map $(TARGET).lss\"
 196         rm -f $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).map $(TARGET).lss