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 OBJDIR
  13 LUFA_BUILD_PROVIDED_VARS   +=
  14 LUFA_BUILD_PROVIDED_MACROS +=
  15
  16 # -----------------------------------------------------------------------------
  17 #               LUFA GCC Compiler Buildsystem Makefile Module.
  18 # -----------------------------------------------------------------------------
  19 # DESCRIPTION:
  20 #   Provides a set of targets to build a C, C++ and/or Assembly application
  21 #   via the AVR-GCC compiler.
  22 # -----------------------------------------------------------------------------
  23 # TARGETS:
  24 #
  25 #    size                      - List built application size
  26 #    symbol-sizes              - Print application symbols from the binary ELF
  27 #                                file as a list sorted by size in bytes
  28 #    all                       - Build application and list size
  29 #    elf                       - Build application ELF debug object file
  30 #    hex                       - Build application HEX object files
  31 #    lss                       - Build application LSS assembly listing file
  32 #    clean                     - Remove output files
  33 #
  34 # MANDATORY PARAMETERS:
  35 #
  36 #    TARGET                    - Application name
  37 #    ARCH                      - Device architecture name
  38 #    MCU                       - Microcontroller device model name
  39 #    SRC                       - List of input source files (*.c, *.cpp, *.S)
  40 #    F_USB                     - Speed of the input clock of the USB controller
  41 #                                in Hz
  42 #    LUFA_PATH                 - Path to the LUFA library core
  43 #
  44 # OPTIONAL PARAMETERS:
  45 #
  46 #    BOARD                     - LUFA board hardware
  47 #    OPTIMIZATION              - Optimization level
  48 #    C_STANDARD                - C Language Standard to use
  49 #    CPP_STANDARD              - C++ Language Standard to use
  50 #    F_CPU                     - Speed of the CPU, in Hz
  51 #    C_FLAGS                   - Flags to pass to the C compiler only
  52 #    CPP_FLAGS                 - Flags to pass to the C++ compiler only
  53 #    ASM_FLAGS                 - Flags to pass to the assembler only
  54 #    CC_FLAGS                  - Common flags to pass to the C/C++ compiler and
  55 #                                assembler
  56 #    LD_FLAGS                  - Flags to pass to the linker
  57 #    OBJDIR                    - Directory for the output object and dependency
  58 #                                files; if equal to ".", the output files will
  59 #                                be generated in the same folder as the sources
  60 #
  61 # PROVIDED VARIABLES:
  62 #
  63 #    (None)
  64 #
  65 # PROVIDED MACROS:
  66 #
  67 #    (None)
  68 #
  69 # -----------------------------------------------------------------------------
  70
  71 ERROR_IF_UNSET   = $(if $(filter undefined, $(origin $(strip $(1)))), $(error Makefile $(strip $(1)) value not set))
  72 ERROR_IF_EMPTY   = $(if $(strip $($(strip $(1)))), , $(error Makefile $(strip $(1)) option cannot be blank))
  73 ERROR_IF_NONBOOL = $(if $(filter Y N, $($(strip $(1)))), , $(error Makefile $(strip $(1)) option must be Y or N))
  74
  75 # Default values of optionally user-supplied variables
  76 BOARD           ?= NONE
  77 OPTIMIZATION    ?= s
  78 F_CPU           ?=
  79 C_STANDARD      ?= gnu99
  80 CPP_STANDARD    ?= gnu++98
  81 C_FLAGS         ?=
  82 CPP_FLAGS       ?=
  83 ASM_FLAGS       ?=
  84 CC_FLAGS        ?=
  85 OBJDIR          ?= .
  86
  87 # Sanity check user supplied values
  88 $(foreach MANDATORY_VAR, $(LUFA_BUILD_MANDATORY_VARS), $(call ERROR_IF_UNSET, $(MANDATORY_VAR)))
  89 $(call ERROR_IF_EMPTY, MCU)
  90 $(call ERROR_IF_EMPTY, TARGET)
  91 $(call ERROR_IF_EMPTY, ARCH)
  92 $(call ERROR_IF_EMPTY, F_USB)
  93 $(call ERROR_IF_EMPTY, LUFA_PATH)
  94 $(call ERROR_IF_EMPTY, BOARD)
  95 $(call ERROR_IF_EMPTY, OPTIMIZATION)
  96 $(call ERROR_IF_EMPTY, C_STANDARD)
  97 $(call ERROR_IF_EMPTY, CPP_STANDARD)
  98 $(call ERROR_IF_EMPTY, OBJDIR)
  99
 100 # Determine the utility prefix to use for the selected architecture
 101 ifeq ($(ARCH), AVR8)
 102    CROSS        := avr-
 103 else ifeq ($(ARCH), XMEGA)
 104    CROSS        := avr-
 105    $(warning The XMEGA device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
 106 else ifeq ($(ARCH), UC3)
 107    CROSS        := avr32-
 108    $(warning The UC3 device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
 109 else
 110    $(error Unsupported architecture "$(ARCH)")
 111 endif
 112
 113 # Output Messages
 114 MSG_BUILD_BEGIN  := Begin compilation of project \"$(TARGET)\"...
 115 MSG_BUILD_END    := Finished building project \"$(TARGET)\".
 116 MSG_COMPILE_CMD  := ' [CC]      :'
 117 MSG_ASSEMBLE_CMD := ' [AS]      :'
 118 MSG_NM_CMD       := ' [NM]      :'
 119 MSG_REMOVE_CMD   := ' [RM]      :'
 120 MSG_LINKER_CMD   := ' [LNK]     :'
 121 MSG_SIZE_CMD     := ' [SIZE]    :'
 122 MSG_OBJCPY_CMD   := ' [OBJCPY]  :'
 123 MSG_OBJDMP_CMD   := ' [OBJDMP]  :'
 124
 125 # Convert input source file list to differentiate them by type
 126 C_SOURCE   = $(filter %.c, $(SRC))
 127 CPP_SOURCE = $(filter %.cpp, $(SRC))
 128 ASM_SOURCE = $(filter %.S, $(SRC))
 129
 130 # Create a list of unknown source file types, if any are found throw an error
 131 UNKNOWN_SOURCE = $(filter-out $(C_SOURCE) $(CPP_SOURCE) $(ASM_SOURCE), $(SRC))
 132 ifneq ($(UNKNOWN_SOURCE),)
 133    $(error Unknown input source formats: $(UNKNOWN_SOURCE))
 134 endif
 135
 136 # Convert input source filenames into a list of required output object files
 137 OBJECT_FILES = $(filter %.o, $(C_SOURCE:%.c=%.o) $(CPP_SOURCE:%.cpp=%.o) $(ASM_SOURCE:%.S=%.o))
 138 ifneq ($(OBJDIR),.)
 139    $(shell mkdir $(OBJDIR) 2>&1 | /dev/null)
 140    VPATH           += $(dir $(SRC))
 141
 142    OBJECT_FILES    := $(addprefix $(patsubst %/,%,$(OBJDIR))/, $(notdir $(OBJECT_FILES)))
 143 endif
 144
 145 DEPENDENCY_FILES = $(OBJECT_FILES:%.o=%.d)
 146
 147 # Create a list of common flags to pass to the compiler/linker/assembler
 148 BASE_CC_FLAGS    :=
 149 ifeq ($(ARCH), AVR8)
 150    BASE_CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 151 else ifeq ($(ARCH), XMEGA)
 152    BASE_CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 153 else ifeq ($(ARCH), UC3)
 154    BASE_CC_FLAGS += -mpart=$(MCU:at32%=%) -g3 -masm-addr-pseudos
 155 endif
 156 BASE_CC_FLAGS += -Wall -fno-strict-aliasing -funsigned-char -funsigned-bitfields -ffunction-sections
 157 BASE_CC_FLAGS += -I. -I$(patsubst %/,%,$(LUFA_PATH))/..
 158 BASE_CC_FLAGS += -DARCH=ARCH_$(ARCH) -DBOARD=BOARD_$(BOARD) -DF_USB=$(F_USB)UL
 159 ifneq ($(F_CPU),)
 160    BASE_CC_FLAGS += -DF_CPU=$(F_CPU)UL
 161 endif
 162
 163 # Additional language specific compiler flags
 164 BASE_C_FLAGS   := -x c -O$(OPTIMIZATION) -std=$(C_STANDARD) -Wstrict-prototypes
 165 BASE_CPP_FLAGS := -x c++ -O$(OPTIMIZATION) -std=$(CPP_STANDARD)
 166 BASE_ASM_FLAGS := -x assembler-with-cpp
 167
 168 # Create a list of flags to pass to the linker
 169 BASE_LD_FLAGS := -lm -Wl,-Map=$(TARGET).map,--cref -Wl,--gc-sections
 170 ifeq ($(ARCH), UC3)
 171    BASE_LD_FLAGS += --rodata-writable --direct-data
 172 else
 173    BASE_LD_FLAGS += -Wl,--relax
 174 endif
 175
 176 # Determine flags to pass to the size utility based on its reported features
 177 SIZE_MCU_FLAG    := $(shell $(CROSS)size --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
 178 SIZE_FORMAT_FLAG := $(shell $(CROSS)size --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
 179
 180
 181 build_begin:
 182         @echo ""
 183         @echo $(MSG_BUILD_BEGIN)
 184         @echo ""
 185
 186 build_end:
 187         @echo $(MSG_BUILD_END)
 188         @echo ""
 189
 190 gcc_version:
 191         @$(CROSS)gcc --version
 192
 193 check_source:
 194         @for f in $(SRC); do \
 195                 if [ ! -f $$f ]; then \
 196                         echo "Error: Source file not found: $$f"; \
 197                         exit 1; \
 198                 fi; \
 199          done
 200
 201 size: $(TARGET).elf
 202         @echo $(MSG_SIZE_CMD) Determining size of \"$<\"
 203         @echo ""
 204         $(CROSS)size $(SIZE_MCU_FLAG) $(SIZE_FORMAT_FLAG) $< ; 2>/dev/null;
 205
 206 symbol-sizes: $(TARGET).elf
 207         @echo $(MSG_NM_CMD) Extracting \"$<\" symbols with decimal byte sizes
 208         avr-nm --size-sort --demangle --radix=d $<
 209
 210 clean:
 211         @echo $(MSG_REMOVE_CMD) Removing object files of \"$(TARGET)\"
 212         rm -f $(OBJECT_FILES)
 213         @echo $(MSG_REMOVE_CMD) Removing dependency files of \"$(TARGET)\"
 214         rm -f $(DEPENDENCY_FILES)
 215         @echo $(MSG_REMOVE_CMD) Removing output files of \"$(TARGET)\"
 216         rm -f $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).map $(TARGET).lss $(TARGET).sym
 217
 218 all: build_begin check_source gcc_version elf hex lss sym size build_end
 219
 220 elf: $(TARGET).elf
 221 hex: $(TARGET).hex $(TARGET).eep
 222 lss: $(TARGET).lss
 223 sym: $(TARGET).sym
 224
 225 $(OBJDIR)/%.o: %.c $(MAKEFILE_LIST)
 226         @echo $(MSG_COMPILE_CMD) Compiling C file \"$(notdir $<)\"
 227         $(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_C_FLAGS) $(CC_FLAGS) $(C_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
 228
 229 $(OBJDIR)/%.o: %.cpp $(MAKEFILE_LIST)
 230         @echo $(MSG_COMPILE_CMD) Compiling C++ file \"$(notdir $<)\"
 231         $(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_CPP_FLAGS) $(CC_FLAGS) $(CPP_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
 232
 233 $(OBJDIR)/%.o: %.S $(MAKEFILE_LIST)
 234         @echo $(MSG_ASSEMBLE_CMD) Assembling \"$(notdir $<)\"
 235         $(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_ASM_FLAGS) $(CC_FLAGS) $(ASM_FLAGS) $< -o $@
 236
 237 .PRECIOUS  : $(OBJECT_FILES)
 238 .SECONDARY : %.elf
 239 %.elf: $(OBJECT_FILES)
 240         @echo $(MSG_LINKER_CMD) Linking object files into \"$@\"
 241         $(CROSS)gcc $(BASE_CC_FLAGS) $(BASE_LD_FLAGS) $(CC_FLAGS) $(LD_FLAGS) $^ -o $@
 242
 243 %.hex: %.elf
 244         @echo $(MSG_OBJCPY_CMD) Extracting HEX file data from \"$<\"
 245         $(CROSS)objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
 246
 247 %.eep: %.elf
 248         @echo $(MSG_OBJCPY_CMD) Extracting EEP file data from \"$<\"
 249         $(CROSS)objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex $< $@ || exit 0
 250
 251 %.lss: %.elf
 252         @echo $(MSG_OBJDMP_CMD) Extracting LSS file data from \"$<\"
 253         $(CROSS)objdump -h -S -z $< > $@
 254
 255 %.sym: %.elf
 256         @echo $(MSG_NM_CMD) Extracting SYM file data from \"$<\"
 257         $(CROSS)nm -n $< > $@
 258
 259 # Include build dependency files
 260 -include $(DEPENDENCY_FILES)
 261
 262 # Phony build targets for this module
 263 .PHONY: build_begin build_end gcc_version check_source size symbol-sizes elf hex lss clean