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 lss gcc_version 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 #    lss                       - Build application LSS assembly listing file
  29 #    gcc_version               - Print version of GCC used
  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/.c++, .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      ?= $(error Makefile LUFA_PATH value not set.)
  65
  66 # Default values of optionally user-supplied variables
  67 BOARD          ?= NONE
  68 OPTIMIZATION   ?= s
  69 F_CPU          ?=
  70 C_STANDARD     ?= gnu99
  71 CPP_STANDARD   ?= gnu++98
  72 C_FLAGS        ?=
  73 CPP_FLAGS      ?=
  74 ASM_FLAGS      ?=
  75 CC_FLAGS       ?=
  76
  77 # Determine the utility prefix to use for the selected architecture
  78 ifeq ($(ARCH), AVR8)
  79    CROSS     = avr-
  80 else ifeq ($(ARCH), XMEGA)
  81    CROSS     = avr-
  82 else ifeq ($(ARCH), UC3)
  83    CROSS     = avr32-
  84 else
  85     $(error Unsupported architecture.)
  86 endif
  87
  88 # Output Messages
  89 MSG_BUILD_BEGIN = Begin compilation of project \"$(TARGET)\"...
  90 MSG_BUILD_END   = Finished building project \"$(TARGET)\".
  91 MSG_COMPILE_CMD = ' [CC]      :'
  92 MSG_REMOVE_CMD  = ' [RM]      :'
  93 MSG_LINKER_CMD  = ' [LNK]     :'
  94 MSG_SIZE_CMD    = ' [SIZE]    :'
  95 MSG_OBJCPY_CMD  = ' [OBJCPY]  :'
  96 MSG_OBJDMP_CMD  = ' [OBJDMP]  :'
  97
  98 # Convert input source file list to differentiate them by type
  99 C_SOURCE   = $(filter %.c, $(SRC))
 100 CPP_SOURCE = $(filter %.cpp, $(SRC))
 101 ASM_SOURCE = $(filter %.S, $(SRC))
 102
 103 # Convert input source filenames into a list of required output object files
 104 OBJECT_FILES     = $(filter %.o, $(C_SOURCE:%.c=%.o) $(CPP_SOURCE:%.cpp=%.o) $(ASM_SOURCE:%.S=%.o))
 105 DEPENDENCY_FILES = $(OBJECT_FILES:%=%.d)
 106
 107 # Create a list of flags to pass to the compiler
 108 ifeq ($(ARCH), AVR8)
 109    CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 110 else ifeq ($(ARCH), XMEGA)
 111    CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 112 else ifeq ($(ARCH), UC3)
 113    CC_FLAGS += -mpart=$(MCU) -g3 -masm-addr-pseudos
 114 endif
 115 CC_FLAGS += -Wall -fno-strict-aliasing -funsigned-char -funsigned-bitfields -ffunction-sections
 116 CC_FLAGS += -I. -I$(patsubst %/,%,$(LUFA_PATH))/..
 117 CC_FLAGS += -DARCH=ARCH_$(ARCH) -DBOARD=BOARD_$(BOARD) -DF_USB=$(F_USB)UL
 118 ifneq ($(F_CPU),)
 119    CC_FLAGS += -DF_CPU=$(F_CPU)UL
 120 endif
 121
 122 # Additional language specific compiler flags
 123 C_FLAGS   += -O$(OPTIMIZATION) -std=$(C_STANDARD) -MMD -MP -MF $@.d -Wstrict-prototypes
 124 CPP_FLAGS += -O$(OPTIMIZATION) -std=$(CPP_STANDARD) -MMD -MP -MF $@.d
 125
 126 # Create a list of flags to pass to the linker
 127 LD_FLAGS += -lm -Wl,-Map=$(TARGET).map,--cref -Wl,--gc-sections
 128 ifeq ($(ARCH), UC3)
 129    LD_FLAGS += --rodata-writable --direct-data
 130 else
 131    LD_FLAGS += -Wl,--relax
 132 endif
 133
 134 # Create a list of unknown source file types, if any are found throw an error
 135 UNKNOWN_SOURCE = $(filter-out $(C_SOURCE) $(CPP_SOURCE) $(ASM_SOURCE), $(SRC))
 136 ifneq ($(UNKNOWN_SOURCE),)
 137    $(error Unknown input source formats: $(UNKNOWN_SOURCE))
 138 endif
 139
 140 # Determine flags to pass to the size utility based on its reported features
 141 SIZE_MCU_FLAG    = $(shell $(CROSS)size --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
 142 SIZE_FORMAT_FLAG = $(shell $(CROSS)size --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
 143
 144
 145 begin:
 146         @echo ""
 147         @echo $(MSG_BUILD_BEGIN)
 148         @echo ""
 149
 150 end:
 151         @echo ""
 152         @echo $(MSG_BUILD_END)
 153         @echo ""
 154
 155 gcc_version:
 156         @$(CROSS)gcc --version
 157
 158 checksource:
 159         @for f in $(SRC) $(CPPSRC) $(ASRC); do \
 160                 if [ -f $$f ]; then \
 161                         echo "Found Source File: $$f" ; \
 162                 else \
 163                         echo "Source File Not Found: $$f" ; \
 164                 fi; \
 165          done
 166
 167 size:
 168         @echo $(MSG_SIZE_CMD) Determining size of \"$(TARGET).elf\"
 169         @if test -f $(TARGET).elf; then \
 170             $(CROSS)size $(SIZE_MCU_FLAG) $(SIZE_FORMAT_FLAG) $(TARGET).elf ; 2>/dev/null; \
 171          fi
 172
 173 .PHONY: begin gcc_version elf hex lss size end
 174 all: begin gcc_version elf hex lss size end
 175
 176 elf: $(TARGET).elf
 177 hex: $(TARGET).hex $(TARGET).eep
 178 lss: $(TARGET).lss
 179
 180 %.o: %.c
 181         @echo $(MSG_COMPILE_CMD) Compiling C file \"$<\"
 182         $(CROSS)gcc -c $(CC_FLAGS) $(C_FLAGS) $< -o $@
 183
 184 %.o: %.cpp
 185         @echo $(MSG_COMPILE_CMD) Compiling C++ file \"$<\"
 186         $(CROSS)gcc -c $(CC_FLAGS) $(CPP_FLAGS) -x c++ $< -o $@
 187
 188 %.o: %.S
 189         @echo $(MSG_COMPILE_CMD) Assembling \"$<\"
 190         $(CROSS)gcc -c $(CC_FLAGS) $(ASM_FLAGS) -x assembler-with-cpp $< -o $@
 191
 192 .PRECIOUS : $(OBJECT_FILES)
 193 %.elf: $(OBJECT_FILES)
 194         @echo $(MSG_LINKER_CMD) Linking object files into \"$@\"
 195         $(CROSS)gcc $(CC_FLAGS) $(LD_FLAGS) $^ -o $@
 196
 197 %.hex: %.elf
 198         @echo $(MSG_OBJCPY_CMD) Extracting HEX file data from \"$<\"
 199         $(CROSS)objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
 200
 201 %.eep: %.elf
 202         @echo $(MSG_OBJCPY_CMD) Extracting EEP file data from \"$<\"
 203         $(CROSS)objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex $< $@ || exit 0
 204
 205 %.lss: %.elf
 206         @echo $(MSG_OBJDMP_CMD) Extracting LSS file data from \"$<\"
 207         $(CROSS)objdump -h -S -z $< > $@
 208
 209 clean:
 210         @echo $(MSG_REMOVE_CMD) Removing object files \"$(strip $(notdir $(OBJECT_FILES)))\"
 211         rm -f $(OBJECT_FILES)
 212         @echo $(MSG_REMOVE_CMD) Removing dependency files \"$(strip $(notdir $(DEPENDENCY_FILES)))\"
 213         rm -f $(DEPENDENCY_FILES)
 214         @echo $(MSG_REMOVE_CMD) Removing output files \"$(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).map $(TARGET).lss\"
 215         rm -f $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).map $(TARGET).lss
 216
 217 # Include build dependency files
 218 -include $(DEPENDENCY_FILES)