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 ($(ARCH), XMEGA)
  89    CROSS        := avr-
  90 else ifeq ($(ARCH), UC3)
  91    CROSS        := avr32-
  92 else
  93     $(error Unsupported architecture "$(ARCH)".)
  94 endif
  95
  96 # Output Messages
  97 MSG_BUILD_BEGIN  := Begin compilation of project \"$(TARGET)\"...
  98 MSG_BUILD_END    := Finished building project \"$(TARGET)\".
  99 MSG_COMPILE_CMD  := ' [CC]      :'
 100 MSG_ASSEMBLE_CMD := ' [AS]      :'
 101 MSG_NM_CMD       := ' [NM]      :'
 102 MSG_REMOVE_CMD   := ' [RM]      :'
 103 MSG_LINKER_CMD   := ' [LNK]     :'
 104 MSG_SIZE_CMD     := ' [SIZE]    :'
 105 MSG_OBJCPY_CMD   := ' [OBJCPY]  :'
 106 MSG_OBJDMP_CMD   := ' [OBJDMP]  :'
 107
 108 # Convert input source file list to differentiate them by type
 109 C_SOURCE   = $(filter %.c, $(SRC))
 110 CPP_SOURCE = $(filter %.cpp, $(SRC))
 111 ASM_SOURCE = $(filter %.S, $(SRC))
 112
 113 # Create a list of unknown source file types, if any are found throw an error
 114 UNKNOWN_SOURCE = $(filter-out $(C_SOURCE) $(CPP_SOURCE) $(ASM_SOURCE), $(SRC))
 115 ifneq ($(UNKNOWN_SOURCE),)
 116    $(error Unknown input source formats: $(UNKNOWN_SOURCE))
 117 endif
 118
 119 # Convert input source filenames into a list of required output object files
 120 OBJECT_FILES     = $(filter %.o, $(C_SOURCE:%.c=%.o) $(CPP_SOURCE:%.cpp=%.o) $(ASM_SOURCE:%.S=%.o))
 121 DEPENDENCY_FILES = $(OBJECT_FILES:%.o=%.d)
 122
 123 # Create a list of common flags to pass to the compiler/linker/assembler
 124 BASE_CC_FLAGS    :=
 125 ifeq ($(ARCH), AVR8)
 126    BASE_CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 127 else ifeq ($(ARCH), XMEGA)
 128    BASE_CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 129 else ifeq ($(ARCH), UC3)
 130    BASE_CC_FLAGS += -mpart=$(MCU:at32%=%) -g3 -masm-addr-pseudos
 131 endif
 132 BASE_CC_FLAGS += -Wall -fno-strict-aliasing -funsigned-char -funsigned-bitfields -ffunction-sections
 133 BASE_CC_FLAGS += -I. -I$(patsubst %/,%,$(LUFA_PATH))/..
 134 BASE_CC_FLAGS += -DARCH=ARCH_$(ARCH) -DBOARD=BOARD_$(BOARD) -DF_USB=$(F_USB)UL
 135 ifneq ($(F_CPU),)
 136    BASE_CC_FLAGS += -DF_CPU=$(F_CPU)UL
 137 endif
 138
 139 # Additional language specific compiler flags
 140 BASE_C_FLAGS   := -x c -O$(OPTIMIZATION) -std=$(C_STANDARD) -Wstrict-prototypes
 141 BASE_CPP_FLAGS := -x c++ -O$(OPTIMIZATION) -std=$(CPP_STANDARD)
 142 BASE_ASM_FLAGS := -x assembler-with-cpp
 143
 144 # Create a list of flags to pass to the linker
 145 BASE_LD_FLAGS := -lm -Wl,-Map=$(TARGET).map,--cref -Wl,--gc-sections
 146 ifeq ($(ARCH), UC3)
 147    BASE_LD_FLAGS += --rodata-writable --direct-data
 148 else
 149    BASE_LD_FLAGS += -Wl,--relax
 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: $(TARGET).elf
 179         @echo $(MSG_SIZE_CMD) Determining size of \"$<\"
 180         @if test -f $(TARGET).elf; then \
 181             $(CROSS)size $(SIZE_MCU_FLAG) $(SIZE_FORMAT_FLAG) $< ; 2>/dev/null; \
 182          fi
 183
 184 symbol-sizes: $(TARGET).elf
 185         @echo $(MSG_NM_CMD) Extracting \"$<\" symbols with decimal byte sizes
 186         avr-nm --size-sort --demangle --radix=d $<
 187
 188 clean:
 189         @echo $(MSG_REMOVE_CMD) Removing object files of \"$(TARGET)\"
 190         rm -f $(OBJECT_FILES)
 191         @echo $(MSG_REMOVE_CMD) Removing dependency files of \"$(TARGET)\"
 192         rm -f $(DEPENDENCY_FILES)
 193         @echo $(MSG_REMOVE_CMD) Removing output files of \"$(TARGET)\"
 194         rm -f $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).map $(TARGET).lss
 195
 196 all: begin check_source gcc_version elf hex lss size end
 197
 198 elf: $(TARGET).elf
 199 hex: $(TARGET).hex $(TARGET).eep
 200 lss: $(TARGET).lss
 201
 202 %.o: %.c $(MAKEFILE_LIST)
 203         @echo $(MSG_COMPILE_CMD) Compiling C file \"$<\"
 204         $(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_C_FLAGS) $(CC_FLAGS) $(C_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
 205
 206 %.o: %.cpp $(MAKEFILE_LIST)
 207         @echo $(MSG_COMPILE_CMD) Compiling C++ file \"$<\"
 208         $(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_CPP_FLAGS) $(CC_FLAGS) $(CPP_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
 209
 210 %.o: %.S $(MAKEFILE_LIST)
 211         @echo $(MSG_ASSEMBLE_CMD) Assembling \"$<\"
 212         $(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_ASM_FLAGS) $(CC_FLAGS) $(ASM_FLAGS) $< -o $@
 213
 214 .PRECIOUS : $(OBJECT_FILES)
 215 %.elf: $(OBJECT_FILES)
 216         @echo $(MSG_LINKER_CMD) Linking object files into \"$@\"
 217         $(CROSS)gcc $(BASE_CC_FLAGS) $(BASE_LD_FLAGS) $(CC_FLAGS) $(LD_FLAGS) $^ -o $@
 218
 219 %.hex: %.elf
 220         @echo $(MSG_OBJCPY_CMD) Extracting HEX file data from \"$<\"
 221         $(CROSS)objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
 222
 223 %.eep: %.elf
 224         @echo $(MSG_OBJCPY_CMD) Extracting EEP file data from \"$<\"
 225         $(CROSS)objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex $< $@ || exit 0
 226
 227 %.lss: %.elf
 228         @echo $(MSG_OBJDMP_CMD) Extracting LSS file data from \"$<\"
 229         $(CROSS)objdump -h -S -z $< > $@
 230
 231 # Include build dependency files
 232 -include $(DEPENDENCY_FILES)
 233
 234 # Phony build targets for this module
 235 .PHONY: begin end gcc_version check_source size symbol-sizes elf hex lss clean