LUFA/Build/lufa_build.mk

   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 check-source symbol-sizes all lib elf hex lss clean mostlyclean
  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 OBJECT_FILES
  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 #    check-source              - Print a list of SRC source files that cannot
  29 #                                be found
  30 #    all                       - Build application and list size
  31 #    lib                       - Build and archive source files into a library
  32 #    elf                       - Build application ELF debug object file
  33 #    hex                       - Build application HEX object files
  34 #    lss                       - Build application LSS assembly listing file
  35 #    clean                     - Remove all project intermediatary and binary
  36 #                                output files
  37 #    mostlyclean               - Remove intermediatary output files, but
  38 #                                preserve binaries
  39 #
  40 # MANDATORY PARAMETERS:
  41 #
  42 #    TARGET                    - Application name
  43 #    ARCH                      - Device architecture name
  44 #    MCU                       - Microcontroller device model name
  45 #    SRC                       - List of input source files (*.c, *.cpp, *.S)
  46 #    F_USB                     - Speed of the input clock of the USB controller
  47 #                                in Hz
  48 #    LUFA_PATH                 - Path to the LUFA library core
  49 #
  50 # OPTIONAL PARAMETERS:
  51 #
  52 #    BOARD                     - LUFA board hardware
  53 #    OPTIMIZATION              - Optimization level
  54 #    C_STANDARD                - C Language Standard to use
  55 #    CPP_STANDARD              - C++ Language Standard to use
  56 #    F_CPU                     - Speed of the CPU, in Hz
  57 #    C_FLAGS                   - Flags to pass to the C compiler only
  58 #    CPP_FLAGS                 - Flags to pass to the C++ compiler only
  59 #    ASM_FLAGS                 - Flags to pass to the assembler only
  60 #    CC_FLAGS                  - Common flags to pass to the C/C++ compiler and
  61 #                                assembler
  62 #    LD_FLAGS                  - Flags to pass to the linker
  63 #    OBJDIR                    - Directory for the output object and dependency
  64 #                                files; if equal to ".", the output files will
  65 #                                be generated in the same folder as the sources
  66 #    OBJECT_FILES              - Extra object files to link in to the binaries
  67 #
  68 # PROVIDED VARIABLES:
  69 #
  70 #    (None)
  71 #
  72 # PROVIDED MACROS:
  73 #
  74 #    (None)
  75 #
  76 # -----------------------------------------------------------------------------
  77
  78 SHELL = /bin/sh
  79
  80 ERROR_IF_UNSET   ?= $(if $(filter undefined, $(origin $(strip $(1)))), $(error Makefile $(strip $(1)) value not set))
  81 ERROR_IF_EMPTY   ?= $(if $(strip $($(strip $(1)))), , $(error Makefile $(strip $(1)) option cannot be blank))
  82 ERROR_IF_NONBOOL ?= $(if $(filter Y N, $($(strip $(1)))), , $(error Makefile $(strip $(1)) option must be Y or N))
  83
  84 # Default values of optionally user-supplied variables
  85 BOARD           ?= NONE
  86 OPTIMIZATION    ?= s
  87 F_CPU           ?=
  88 C_STANDARD      ?= gnu99
  89 CPP_STANDARD    ?= gnu++98
  90 C_FLAGS         ?=
  91 CPP_FLAGS       ?=
  92 ASM_FLAGS       ?=
  93 CC_FLAGS        ?=
  94 OBJDIR          ?= .
  95 OBJECT_FILES    ?=
  96
  97 # Sanity check user supplied values
  98 $(foreach MANDATORY_VAR, $(LUFA_BUILD_MANDATORY_VARS), $(call ERROR_IF_UNSET, $(MANDATORY_VAR)))
  99 $(call ERROR_IF_EMPTY, MCU)
 100 $(call ERROR_IF_EMPTY, TARGET)
 101 $(call ERROR_IF_EMPTY, ARCH)
 102 $(call ERROR_IF_EMPTY, F_USB)
 103 $(call ERROR_IF_EMPTY, LUFA_PATH)
 104 $(call ERROR_IF_EMPTY, BOARD)
 105 $(call ERROR_IF_EMPTY, OPTIMIZATION)
 106 $(call ERROR_IF_EMPTY, C_STANDARD)
 107 $(call ERROR_IF_EMPTY, CPP_STANDARD)
 108 $(call ERROR_IF_EMPTY, OBJDIR)
 109
 110 # Determine the utility prefix to use for the selected architecture
 111 ifeq ($(ARCH), AVR8)
 112    CROSS        := avr
 113 else ifeq ($(ARCH), XMEGA)
 114    CROSS        := avr
 115    $(warning The XMEGA device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
 116 else ifeq ($(ARCH), UC3)
 117    CROSS        := avr32
 118    $(warning The UC3 device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
 119 else
 120    $(error Unsupported architecture "$(ARCH)")
 121 endif
 122
 123 # Output Messages
 124 MSG_COMPILE_CMD  := ' [GCC]     :'
 125 MSG_ASSEMBLE_CMD := ' [GAS]     :'
 126 MSG_NM_CMD       := ' [NM]      :'
 127 MSG_REMOVE_CMD   := ' [RM]      :'
 128 MSG_LINK_CMD     := ' [LNK]     :'
 129 MSG_ARCHIVE_CMD  := ' [AR]      :'
 130 MSG_SIZE_CMD     := ' [SIZE]    :'
 131 MSG_OBJCPY_CMD   := ' [OBJCPY]  :'
 132 MSG_OBJDMP_CMD   := ' [OBJDMP]  :'
 133
 134 # Convert input source file list to differentiate them by type
 135 C_SOURCE   := $(filter %.c, $(SRC))
 136 CPP_SOURCE := $(filter %.cpp, $(SRC))
 137 ASM_SOURCE := $(filter %.S, $(SRC))
 138
 139 # Create a list of unknown source file types, if any are found throw an error
 140 UNKNOWN_SOURCE := $(filter-out $(C_SOURCE) $(CPP_SOURCE) $(ASM_SOURCE), $(SRC))
 141 ifneq ($(UNKNOWN_SOURCE),)
 142    $(error Unknown input source file formats: $(UNKNOWN_SOURCE))
 143 endif
 144
 145 # Convert input source filenames into a list of required output object files
 146 OBJECT_FILES += $(addsuffix .o, $(basename $(SRC)))
 147 ifneq ($(OBJDIR),.)
 148    $(shell mkdir $(OBJDIR) 2> /dev/null)
 149    VPATH           += $(dir $(SRC))
 150    OBJECT_FILES    := $(addprefix $(patsubst %/,%,$(OBJDIR))/, $(notdir $(OBJECT_FILES)))
 151
 152    # Check if any object file (without path) appears more than once in the object file list
 153    ifneq ($(words $(sort $(OBJECT_FILES))), $(words $(OBJECT_FILES)))
 154        $(error Cannot build with OBJDIR parameter set - one or more object file name is not unique)
 155    endif
 156 endif
 157
 158 # Create a list of dependency files from the list of object files
 159 DEPENDENCY_FILES := $(OBJECT_FILES:%.o=%.d)
 160
 161 # Create a list of common flags to pass to the compiler/linker/assembler
 162 BASE_CC_FLAGS    := -pipe
 163 ifeq ($(ARCH), AVR8)
 164    BASE_CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 165 else ifeq ($(ARCH), XMEGA)
 166    BASE_CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
 167 else ifeq ($(ARCH), UC3)
 168    BASE_CC_FLAGS += -mpart=$(MCU:at32%=%) -g3 -masm-addr-pseudos
 169 endif
 170 BASE_CC_FLAGS += -Wall -fno-strict-aliasing -funsigned-char -funsigned-bitfields -ffunction-sections
 171 BASE_CC_FLAGS += -I. -I$(patsubst %/,%,$(LUFA_PATH))/..
 172 BASE_CC_FLAGS += -DARCH=ARCH_$(ARCH) -DBOARD=BOARD_$(BOARD) -DF_USB=$(F_USB)UL
 173 ifneq ($(F_CPU),)
 174    BASE_CC_FLAGS += -DF_CPU=$(F_CPU)UL
 175 endif
 176
 177 # Additional language specific compiler flags
 178 BASE_C_FLAGS   := -x c -O$(OPTIMIZATION) -std=$(C_STANDARD) -Wstrict-prototypes
 179 BASE_CPP_FLAGS := -x c++ -O$(OPTIMIZATION) -std=$(CPP_STANDARD)
 180 BASE_ASM_FLAGS := -x assembler-with-cpp
 181
 182 # Create a list of flags to pass to the linker
 183 BASE_LD_FLAGS := -lm -Wl,-Map=$(TARGET).map,--cref -Wl,--gc-sections
 184 ifeq ($(ARCH), UC3)
 185    BASE_LD_FLAGS += --rodata-writable --direct-data
 186 else
 187    BASE_LD_FLAGS += -Wl,--relax
 188 endif
 189
 190 # Determine flags to pass to the size utility based on its reported features (only invoke if size target required)
 191 size: SIZE_MCU_FLAG    := $(shell $(CROSS)-size --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
 192 size: SIZE_FORMAT_FLAG := $(shell $(CROSS)-size --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
 193
 194
 195 build_begin:
 196         @echo ""
 197         @echo Begin compilation of project \"$(TARGET)\"...
 198         @echo ""
 199
 200 build_end:
 201         @echo Finished building project \"$(TARGET)\".
 202         @echo ""
 203
 204 gcc-version:
 205         @$(CROSS)-gcc --version
 206
 207 check-source:
 208         @for f in $(SRC); do \
 209                 if [ ! -f $$f ]; then \
 210                         echo "Error: Source file not found: $$f"; \
 211                         exit 1; \
 212                 fi; \
 213          done
 214
 215 size: $(TARGET).elf
 216         @echo $(MSG_SIZE_CMD) Determining size of \"$<\"
 217         @echo ""
 218         $(CROSS)-size $(SIZE_MCU_FLAG) $(SIZE_FORMAT_FLAG) $< ; 2>/dev/null;
 219
 220 symbol-sizes: $(TARGET).elf
 221         @echo $(MSG_NM_CMD) Extracting \"$<\" symbols with decimal byte sizes
 222         $(CROSS)-nm --size-sort --demangle --radix=d $<
 223
 224 mostlyclean:
 225         @echo $(MSG_REMOVE_CMD) Removing object files of \"$(TARGET)\"
 226         rm -f $(OBJECT_FILES)
 227         @echo $(MSG_REMOVE_CMD) Removing dependency files of \"$(TARGET)\"
 228         rm -f $(DEPENDENCY_FILES)
 229
 230 clean: mostlyclean
 231         @echo $(MSG_REMOVE_CMD) Removing output files of \"$(TARGET)\"
 232         rm -f $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).map $(TARGET).lss $(TARGET).sym $(TARGET).a
 233
 234 all: build_begin check-source gcc-version elf hex lss sym size build_end
 235
 236 lib: lib$(TARGET).a
 237 elf: $(TARGET).elf
 238 hex: $(TARGET).hex $(TARGET).eep
 239 lss: $(TARGET).lss
 240 sym: $(TARGET).sym
 241
 242 $(OBJDIR)/%.o: %.c $(MAKEFILE_LIST)
 243         @echo $(MSG_COMPILE_CMD) Compiling C file \"$(notdir $<)\"
 244         $(CROSS)-gcc -c $(BASE_CC_FLAGS) $(BASE_C_FLAGS) $(CC_FLAGS) $(C_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
 245
 246 $(OBJDIR)/%.o: %.cpp $(MAKEFILE_LIST)
 247         @echo $(MSG_COMPILE_CMD) Compiling C++ file \"$(notdir $<)\"
 248         $(CROSS)-gcc -c $(BASE_CC_FLAGS) $(BASE_CPP_FLAGS) $(CC_FLAGS) $(CPP_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
 249
 250 $(OBJDIR)/%.o: %.S $(MAKEFILE_LIST)
 251         @echo $(MSG_ASSEMBLE_CMD) Assembling \"$(notdir $<)\"
 252         $(CROSS)-gcc -c $(BASE_CC_FLAGS) $(BASE_ASM_FLAGS) $(CC_FLAGS) $(ASM_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
 253
 254 .PRECIOUS  : $(OBJECT_FILES)
 255 .SECONDARY : %.a
 256 %.a: $(OBJECT_FILES)
 257         @echo $(MSG_ARCHIVE_CMD) Archiving object files into \"$@\"
 258         $(CROSS)-ar rcs $@ $(OBJECT_FILES)
 259
 260 .PRECIOUS  : $(OBJECT_FILES)
 261 .SECONDARY : %.elf
 262 %.elf: $(OBJECT_FILES)
 263         @echo $(MSG_LINK_CMD) Linking object files into \"$@\"
 264         $(CROSS)-gcc $(BASE_CC_FLAGS) $(BASE_LD_FLAGS) $(CC_FLAGS) $(LD_FLAGS) $^ -o $@
 265
 266 %.hex: %.elf
 267         @echo $(MSG_OBJCPY_CMD) Extracting HEX file data from \"$<\"
 268         $(CROSS)-objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
 269
 270 %.eep: %.elf
 271         @echo $(MSG_OBJCPY_CMD) Extracting EEP file data from \"$<\"
 272         $(CROSS)-objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex $< $@ || exit 0
 273
 274 %.lss: %.elf
 275         @echo $(MSG_OBJDMP_CMD) Extracting LSS file data from \"$<\"
 276         $(CROSS)-objdump -h -S -z $< > $@
 277
 278 %.sym: %.elf
 279         @echo $(MSG_NM_CMD) Extracting SYM file data from \"$<\"
 280         $(CROSS)-nm -n $< > $@
 281
 282 # Include build dependency files
 283 -include $(DEPENDENCY_FILES)
 284
 285 # Phony build targets for this module
 286 .PHONY: build_begin build_end gcc-version check-source size symbol-sizes lib elf hex lss clean mostlyclean