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