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 ERROR_IF_UNSET   = $(if $(filter undefined, $(origin $(strip $(1)))), $(error Makefile $(strip $(1)) value not set))
  59 ERROR_IF_EMPTY   = $(if $(strip $($(strip $(1)))), , $(error Makefile $(strip $(1)) option cannot be blank))
  60 ERROR_IF_NONBOOL = $(if $(filter Y N, $($(strip $(1)))), , $(error Makefile $(strip $(1)) option must be Y or N))
  61
  62 # Default values of optionally user-supplied variables
  63 BOARD           ?= NONE
  64 OPTIMIZATION    ?= s
  65 F_CPU           ?=
  66 C_STANDARD      ?= gnu99
  67 CPP_STANDARD    ?= gnu++98
  68 C_FLAGS         ?=
  69 CPP_FLAGS       ?=
  70 ASM_FLAGS       ?=
  71 CC_FLAGS        ?=
  72
  73 # Sanity check user supplied values
  74 $(foreach MANDATORY_VAR, $(LUFA_BUILD_MANDATORY_VARS), $(call ERROR_IF_UNSET, $(MANDATORY_VAR)))
  75 $(call ERROR_IF_EMPTY, MCU)
  76 $(call ERROR_IF_EMPTY, TARGET)
  77 $(call ERROR_IF_EMPTY, ARCH)
  78 $(call ERROR_IF_EMPTY, F_USB)
  79 $(call ERROR_IF_EMPTY, LUFA_PATH)
  80 $(call ERROR_IF_EMPTY, BOARD)
  81 $(call ERROR_IF_EMPTY, OPTIMIZATION)
  82 $(call ERROR_IF_EMPTY, C_STANDARD)
  83 $(call ERROR_IF_EMPTY, CPP_STANDARD)
  84
  85 # Determine the utility prefix to use for the selected architecture
  86 ifeq ($(ARCH), AVR8)
  87    CROSS        := avr-
  88 else ifeq ($(ARCH), XMEGA)
  89    CROSS        := avr-
  90    $(warning The XMEGA device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
  91 else ifeq ($(ARCH), UC3)
  92    CROSS        := avr32-
  93    $(warning The UC3 device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
  94 else
  95    $(error Unsupported architecture "$(ARCH)")
  96 endif
  97
  98 # Output Messages
  99 MSG_BUILD_BEGIN  := Begin compilation of project \"$(TARGET)\"...
 100 MSG_BUILD_END    := Finished building project \"$(TARGET)\".
 101 MSG_COMPILE_CMD  := ' [CC]      :'
 102 MSG_ASSEMBLE_CMD := ' [AS]      :'
 103 MSG_NM_CMD       := ' [NM]      :'
 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 # Create a list of unknown source file types, if any are found throw an error
 116 UNKNOWN_SOURCE = $(filter-out $(C_SOURCE) $(CPP_SOURCE) $(ASM_SOURCE), $(SRC))
 117 ifneq ($(UNKNOWN_SOURCE),)
 118    $(error Unknown input source formats: $(UNKNOWN_SOURCE))
 119 endif
 120
 121 # Convert input source filenames into a list of required output object files
 122 OBJECT_FILES     = $(filter %.o, $(C_SOURCE:%.c=%.o) $(CPP_SOURCE:%.cpp=%.o) $(ASM_SOURCE:%.S=%.o))
 123 DEPENDENCY_FILES = $(OBJECT_FILES:%.o=%.d)
 124
 125 # Create a list of common flags to pass to the compiler/linker/assembler
 126 BASE_CC_FLAGS    :=
 127 ifeq ($(ARCH), AVR8)
 128    BASE_CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 129 else ifeq ($(ARCH), XMEGA)
 130    BASE_CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 131 else ifeq ($(ARCH), UC3)
 132    BASE_CC_FLAGS += -mpart=$(MCU:at32%=%) -g3 -masm-addr-pseudos
 133 endif
 134 BASE_CC_FLAGS += -Wall -fno-strict-aliasing -funsigned-char -funsigned-bitfields -ffunction-sections
 135 BASE_CC_FLAGS += -I. -I$(patsubst %/,%,$(LUFA_PATH))/..
 136 BASE_CC_FLAGS += -DARCH=ARCH_$(ARCH) -DBOARD=BOARD_$(BOARD) -DF_USB=$(F_USB)UL
 137 ifneq ($(F_CPU),)
 138    BASE_CC_FLAGS += -DF_CPU=$(F_CPU)UL
 139 endif
 140
 141 # Additional language specific compiler flags
 142 BASE_C_FLAGS   := -x c -O$(OPTIMIZATION) -std=$(C_STANDARD) -Wstrict-prototypes
 143 BASE_CPP_FLAGS := -x c++ -O$(OPTIMIZATION) -std=$(CPP_STANDARD)
 144 BASE_ASM_FLAGS := -x assembler-with-cpp
 145
 146 # Create a list of flags to pass to the linker
 147 BASE_LD_FLAGS := -lm -Wl,-Map=$(TARGET).map,--cref -Wl,--gc-sections
 148 ifeq ($(ARCH), UC3)
 149    BASE_LD_FLAGS += --rodata-writable --direct-data
 150 else
 151    BASE_LD_FLAGS += -Wl,--relax
 152 endif
 153
 154 # Determine flags to pass to the size utility based on its reported features
 155 SIZE_MCU_FLAG    := $(shell $(CROSS)size --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
 156 SIZE_FORMAT_FLAG := $(shell $(CROSS)size --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
 157
 158
 159 begin:
 160         @echo ""
 161         @echo $(MSG_BUILD_BEGIN)
 162         @echo ""
 163
 164 end:
 165         @echo ""
 166         @echo $(MSG_BUILD_END)
 167         @echo ""
 168
 169 gcc_version:
 170         @$(CROSS)gcc --version
 171
 172 check_source:
 173         @for f in $(SRC); do \
 174                 if [ ! -f $$f ]; then \
 175                         echo "Error: Source file not found: $$f"; \
 176                         exit 1; \
 177                 fi; \
 178          done
 179
 180 size: $(TARGET).elf
 181         @echo $(MSG_SIZE_CMD) Determining size of \"$<\"
 182         @if test -f $(TARGET).elf; then \
 183             $(CROSS)size $(SIZE_MCU_FLAG) $(SIZE_FORMAT_FLAG) $< ; 2>/dev/null; \
 184          fi
 185
 186 symbol-sizes: $(TARGET).elf
 187         @echo $(MSG_NM_CMD) Extracting \"$<\" symbols with decimal byte sizes
 188         avr-nm --size-sort --demangle --radix=d $<
 189
 190 clean:
 191         @echo $(MSG_REMOVE_CMD) Removing object files of \"$(TARGET)\"
 192         rm -f $(OBJECT_FILES)
 193         @echo $(MSG_REMOVE_CMD) Removing dependency files of \"$(TARGET)\"
 194         rm -f $(DEPENDENCY_FILES)
 195         @echo $(MSG_REMOVE_CMD) Removing output files of \"$(TARGET)\"
 196         rm -f $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).map $(TARGET).lss
 197
 198 all: begin check_source gcc_version elf hex lss size end
 199
 200 elf: $(TARGET).elf
 201 hex: $(TARGET).hex $(TARGET).eep
 202 lss: $(TARGET).lss
 203
 204 %.o: %.c $(MAKEFILE_LIST)
 205         @echo $(MSG_COMPILE_CMD) Compiling C file \"$<\"
 206         $(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_C_FLAGS) $(CC_FLAGS) $(C_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
 207
 208 %.o: %.cpp $(MAKEFILE_LIST)
 209         @echo $(MSG_COMPILE_CMD) Compiling C++ file \"$<\"
 210         $(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_CPP_FLAGS) $(CC_FLAGS) $(CPP_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
 211
 212 %.o: %.S $(MAKEFILE_LIST)
 213         @echo $(MSG_ASSEMBLE_CMD) Assembling \"$<\"
 214         $(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_ASM_FLAGS) $(CC_FLAGS) $(ASM_FLAGS) $< -o $@
 215
 216 .PRECIOUS : $(OBJECT_FILES)
 217 %.elf: $(OBJECT_FILES)
 218         @echo $(MSG_LINKER_CMD) Linking object files into \"$@\"
 219         $(CROSS)gcc $(BASE_CC_FLAGS) $(BASE_LD_FLAGS) $(CC_FLAGS) $(LD_FLAGS) $^ -o $@
 220
 221 %.hex: %.elf
 222         @echo $(MSG_OBJCPY_CMD) Extracting HEX file data from \"$<\"
 223         $(CROSS)objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
 224
 225 %.eep: %.elf
 226         @echo $(MSG_OBJCPY_CMD) Extracting EEP file data from \"$<\"
 227         $(CROSS)objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex $< $@ || exit 0
 228
 229 %.lss: %.elf
 230         @echo $(MSG_OBJDMP_CMD) Extracting LSS file data from \"$<\"
 231         $(CROSS)objdump -h -S -z $< > $@
 232
 233 # Include build dependency files
 234 -include $(DEPENDENCY_FILES)
 235
 236 # Phony build targets for this module
 237 .PHONY: begin end gcc_version check_source size symbol-sizes elf hex lss clean