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- #
- # LUFA Library
- # Copyright (C) Dean Camera, 2014.
- #
- # dean [at] fourwalledcubicle [dot] com
- # www.lufa-lib.org
- #
-
- LUFA_BUILD_MODULES += BUILD
- LUFA_BUILD_TARGETS += size symbol-sizes all lib elf bin hex lss clean mostlyclean
- LUFA_BUILD_MANDATORY_VARS += TARGET ARCH MCU SRC F_USB LUFA_PATH
- 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 DEBUG_TYPE DEBUG_LEVEL LINKER_RELAXATIONS COMPILER_PATH
- LUFA_BUILD_PROVIDED_VARS +=
- LUFA_BUILD_PROVIDED_MACROS +=
-
- # -----------------------------------------------------------------------------
- # LUFA GCC Compiler Buildsystem Makefile Module.
- # -----------------------------------------------------------------------------
- # DESCRIPTION:
- # Provides a set of targets to build a C, C++ and/or Assembly application
- # via the AVR-GCC compiler.
- # -----------------------------------------------------------------------------
- # TARGETS:
- #
- # size - List built application size
- # symbol-sizes - Print application symbols from the binary ELF
- # file as a list sorted by size in bytes
- # all - Build application and list size
- # lib - Build and archive source files into a library
- # elf - Build application ELF debug object file
- # bin - Build application BIN binary object file
- # hex - Build application HEX object file
- # lss - Build application LSS assembly listing file
- # clean - Remove all project intermediary and binary
- # output files
- # mostlyclean - Remove intermediary output files, but
- # preserve binaries
- # <filename>.s - Compile C/C++ source file into an assembly file
- # for manual code inspection
- #
- # MANDATORY PARAMETERS:
- #
- # TARGET - Application name
- # ARCH - Device architecture name
- # MCU - Microcontroller device model name
- # SRC - List of input source files (*.c, *.cpp, *.S)
- # F_USB - Speed of the input clock of the USB controller
- # in Hz
- # LUFA_PATH - Path to the LUFA library core
- #
- # OPTIONAL PARAMETERS:
- #
- # BOARD - LUFA board hardware
- # OPTIMIZATION - Optimization level
- # C_STANDARD - C Language Standard to use
- # CPP_STANDARD - C++ Language Standard to use
- # F_CPU - Speed of the CPU, in Hz
- # C_FLAGS - Flags to pass to the C compiler only
- # CPP_FLAGS - Flags to pass to the C++ compiler only
- # ASM_FLAGS - Flags to pass to the assembler only
- # CC_FLAGS - Common flags to pass to the C/C++ compiler and
- # assembler
- # LD_FLAGS - Flags to pass to the linker
- # LINKER_RELAXATIONS - Enable or disable linker relaxations to
- # decrease binary size (note: can cause link
- # failures on systems with an unpatched binutils)
- # OBJDIR - Directory for the output object and dependency
- # files; if equal to ".", the output files will
- # be generated in the same folder as the sources
- # OBJECT_FILES - Extra object files to link in to the binaries
- # DEBUG_FORMAT - Format of the debugging information to
- # generate in the compiled object files
- # DEBUG_LEVEL - Level the debugging information to generate in
- # the compiled object files
- # COMPILER_PATH - Location of the GCC toolchain to use
- #
- # PROVIDED VARIABLES:
- #
- # (None)
- #
- # PROVIDED MACROS:
- #
- # (None)
- #
- # -----------------------------------------------------------------------------
-
- SHELL = /bin/sh
-
- ERROR_IF_UNSET ?= $(if $(filter undefined, $(origin $(strip $(1)))), $(error Makefile $(strip $(1)) value not set))
- ERROR_IF_EMPTY ?= $(if $(strip $($(strip $(1)))), , $(error Makefile $(strip $(1)) option cannot be blank))
- ERROR_IF_NONBOOL ?= $(if $(filter Y N, $($(strip $(1)))), , $(error Makefile $(strip $(1)) option must be Y or N))
-
- # Default values of optionally user-supplied variables
- COMPILER_PATH ?=
- BOARD ?= NONE
- OPTIMIZATION ?= s
- F_CPU ?=
- C_STANDARD ?= gnu99
- CPP_STANDARD ?= gnu++98
- C_FLAGS ?=
- CPP_FLAGS ?=
- ASM_FLAGS ?=
- CC_FLAGS ?=
- OBJDIR ?= .
- OBJECT_FILES ?=
- DEBUG_FORMAT ?= dwarf-2
- DEBUG_LEVEL ?= 2
- LINKER_RELAXATIONS ?= Y
-
- # Sanity check user supplied values
- $(foreach MANDATORY_VAR, $(LUFA_BUILD_MANDATORY_VARS), $(call ERROR_IF_UNSET, $(MANDATORY_VAR)))
- $(call ERROR_IF_EMPTY, MCU)
- $(call ERROR_IF_EMPTY, TARGET)
- $(call ERROR_IF_EMPTY, ARCH)
- $(call ERROR_IF_EMPTY, F_USB)
- $(call ERROR_IF_EMPTY, LUFA_PATH)
- $(call ERROR_IF_EMPTY, BOARD)
- $(call ERROR_IF_EMPTY, OPTIMIZATION)
- $(call ERROR_IF_EMPTY, C_STANDARD)
- $(call ERROR_IF_EMPTY, CPP_STANDARD)
- $(call ERROR_IF_EMPTY, OBJDIR)
- $(call ERROR_IF_EMPTY, DEBUG_FORMAT)
- $(call ERROR_IF_EMPTY, DEBUG_LEVEL)
- $(call ERROR_IF_NONBOOL, LINKER_RELAXATIONS)
-
- # Determine the utility prefix to use for the selected architecture
- ifeq ($(ARCH), AVR8)
- CROSS := $(COMPILER_PATH)avr
- else ifeq ($(ARCH), XMEGA)
- CROSS := $(COMPILER_PATH)avr
- $(warning The XMEGA device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
- else ifeq ($(ARCH), UC3)
- CROSS := $(COMPILER_PATH)avr32
- $(warning The UC3 device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
- else
- $(error Unsupported architecture "$(ARCH)")
- endif
-
- # Output Messages
- MSG_INFO_MESSAGE := ' [INFO] :'
- MSG_COMPILE_CMD := ' [GCC] :'
- MSG_ASSEMBLE_CMD := ' [GAS] :'
- MSG_NM_CMD := ' [NM] :'
- MSG_REMOVE_CMD := ' [RM] :'
- MSG_LINK_CMD := ' [LNK] :'
- MSG_ARCHIVE_CMD := ' [AR] :'
- MSG_SIZE_CMD := ' [SIZE] :'
- MSG_OBJCPY_CMD := ' [OBJCPY] :'
- MSG_OBJDMP_CMD := ' [OBJDMP] :'
-
- # Convert input source file list to differentiate them by type
- C_SOURCE := $(filter %.c, $(SRC))
- CPP_SOURCE := $(filter %.cpp, $(SRC))
- ASM_SOURCE := $(filter %.S, $(SRC))
-
- # Create a list of unknown source file types, if any are found throw an error
- UNKNOWN_SOURCE := $(filter-out $(C_SOURCE) $(CPP_SOURCE) $(ASM_SOURCE), $(SRC))
- ifneq ($(UNKNOWN_SOURCE),)
- $(error Unknown input source file formats: $(UNKNOWN_SOURCE))
- endif
-
- # Convert input source filenames into a list of required output object files
- OBJECT_FILES += $(addsuffix .o, $(basename $(SRC)))
-
- # Check if an output object file directory was specified instead of the input file location
- ifneq ($(OBJDIR),.)
- # Prefix all the object filenames with the output object file directory path
- OBJECT_FILES := $(addprefix $(patsubst %/,%,$(OBJDIR))/, $(notdir $(OBJECT_FILES)))
-
- # Check if any object file (without path) appears more than once in the object file list
- ifneq ($(words $(sort $(OBJECT_FILES))), $(words $(OBJECT_FILES)))
- $(error Cannot build with OBJDIR parameter set - one or more object file name is not unique)
- endif
-
- # Create the output object file directory if it does not exist and add it to the virtual path list
- $(shell mkdir $(OBJDIR) 2> /dev/null)
- VPATH += $(dir $(SRC))
- endif
-
- # Create a list of dependency files from the list of object files
- DEPENDENCY_FILES := $(OBJECT_FILES:%.o=%.d)
-
- # Create a list of common flags to pass to the compiler/linker/assembler
- BASE_CC_FLAGS := -pipe -g$(DEBUG_FORMAT) -g$(DEBUG_LEVEL)
- ifeq ($(ARCH), AVR8)
- BASE_CC_FLAGS += -mmcu=$(MCU) -fshort-enums -fno-inline-small-functions -fpack-struct
- else ifeq ($(ARCH), XMEGA)
- BASE_CC_FLAGS += -mmcu=$(MCU) -fshort-enums -fno-inline-small-functions -fpack-struct
- else ifeq ($(ARCH), UC3)
- BASE_CC_FLAGS += -mpart=$(MCU:at32%=%) -masm-addr-pseudos
- endif
- BASE_CC_FLAGS += -Wall -fno-strict-aliasing -funsigned-char -funsigned-bitfields -ffunction-sections
- BASE_CC_FLAGS += -I. -I$(patsubst %/,%,$(LUFA_PATH))/..
- BASE_CC_FLAGS += -DARCH=ARCH_$(ARCH) -DBOARD=BOARD_$(BOARD) -DF_USB=$(F_USB)UL
- ifneq ($(F_CPU),)
- BASE_CC_FLAGS += -DF_CPU=$(F_CPU)UL
- endif
- ifeq ($(LINKER_RELAXATIONS), Y)
- BASE_CC_FLAGS += -mrelax
- endif
-
- # This flag is required for bootloaders as GCC will emit invalid jump table
- # assembly code for devices with large amounts of flash; the jump table target
- # is extracted from FLASH without using the correct ELPM instruction, resulting
- # in a pseudo-random jump target.
- BASE_CC_FLAGS += -fno-jump-tables
-
- # Additional language specific compiler flags
- BASE_C_FLAGS := -x c -O$(OPTIMIZATION) -std=$(C_STANDARD) -Wstrict-prototypes
- BASE_CPP_FLAGS := -x c++ -O$(OPTIMIZATION) -std=$(CPP_STANDARD)
- BASE_ASM_FLAGS := -x assembler-with-cpp
-
- # Create a list of flags to pass to the linker
- BASE_LD_FLAGS := -lm -Wl,-Map=$(TARGET).map,--cref -Wl,--gc-sections
- ifeq ($(LINKER_RELAXATIONS), Y)
- BASE_LD_FLAGS += -Wl,--relax
- endif
- ifeq ($(ARCH), AVR8)
- BASE_LD_FLAGS += -mmcu=$(MCU)
- else ifeq ($(ARCH), XMEGA)
- BASE_LD_FLAGS += -mmcu=$(MCU)
- else ifeq ($(ARCH), UC3)
- BASE_LD_FLAGS += -mpart=$(MCU:at32%=%) --rodata-writable --direct-data
- endif
-
- # Determine flags to pass to the size utility based on its reported features (only invoke if size target required)
- # and on an architecture where this non-standard patch is available
- ifneq ($(ARCH), UC3)
- size: SIZE_MCU_FLAG := $(shell $(CROSS)-size --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
- size: SIZE_FORMAT_FLAG := $(shell $(CROSS)-size --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
- endif
-
- # Pre-build informational target, to give compiler and project name information when building
- build_begin:
- @echo $(MSG_INFO_MESSAGE) Begin compilation of project \"$(TARGET)\"...
- @echo ""
- @$(CROSS)-gcc --version
-
- # Post-build informational target, to project name information when building has completed
- build_end:
- @echo $(MSG_INFO_MESSAGE) Finished building project \"$(TARGET)\".
-
- # Prints size information of a compiled application (FLASH, RAM and EEPROM usages)
- size: $(TARGET).elf
- @echo $(MSG_SIZE_CMD) Determining size of \"$<\"
- @echo ""
- $(CROSS)-size $(SIZE_MCU_FLAG) $(SIZE_FORMAT_FLAG) $<
-
- # Prints size information on the symbols within a compiled application in decimal bytes
- symbol-sizes: $(TARGET).elf
- @echo $(MSG_NM_CMD) Extracting \"$<\" symbols with decimal byte sizes
- $(CROSS)-nm --size-sort --demangle --radix=d $<
-
- # Cleans intermediary build files, leaving only the compiled application files
- mostlyclean:
- @echo $(MSG_REMOVE_CMD) Removing object files of \"$(TARGET)\"
- rm -f $(OBJECT_FILES)
- @echo $(MSG_REMOVE_CMD) Removing dependency files of \"$(TARGET)\"
- rm -f $(DEPENDENCY_FILES)
-
- # Cleans all build files, leaving only the original source code
- clean: mostlyclean
- @echo $(MSG_REMOVE_CMD) Removing output files of \"$(TARGET)\"
- rm -f $(TARGET).elf $(TARGET).hex $(TARGET).bin $(TARGET).eep $(TARGET).map $(TARGET).lss $(TARGET).sym lib$(TARGET).a
-
- # Performs a complete build of the user application and prints size information afterwards
- all: build_begin elf hex bin lss sym size build_end
-
- # Helper targets, to build a specific type of output file without having to know the project target name
- lib: lib$(TARGET).a
- elf: $(TARGET).elf
- hex: $(TARGET).hex $(TARGET).eep
- bin: $(TARGET).bin
- lss: $(TARGET).lss
- sym: $(TARGET).sym
-
- # Default target to *create* the user application's specified source files; if this rule is executed by
- # make, the input source file doesn't exist and an error needs to be presented to the user
- $(SRC):
- $(error Source file does not exist: $@)
-
- # Compiles an input C source file and generates an assembly listing for it
- %.s: %.c $(MAKEFILE_LIST)
- @echo $(MSG_COMPILE_CMD) Generating assembly from C file \"$(notdir $<)\"
- $(CROSS)-gcc -S $(BASE_CC_FLAGS) $(BASE_C_FLAGS) $(CC_FLAGS) $(C_FLAGS) $< -o $@
-
- # Compiles an input C++ source file and generates an assembly listing for it
- %.s: %.cpp $(MAKEFILE_LIST)
- @echo $(MSG_COMPILE_CMD) Generating assembly from C++ file \"$(notdir $<)\"
- $(CROSS)-gcc -S $(BASE_CC_FLAGS) $(BASE_CPP_FLAGS) $(CC_FLAGS) $(CPP_FLAGS) $< -o $@
-
- # Compiles an input C source file and generates a linkable object file for it
- $(OBJDIR)/%.o: %.c $(MAKEFILE_LIST)
- @echo $(MSG_COMPILE_CMD) Compiling C file \"$(notdir $<)\"
- $(CROSS)-gcc -c $(BASE_CC_FLAGS) $(BASE_C_FLAGS) $(CC_FLAGS) $(C_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
-
- # Compiles an input C++ source file and generates a linkable object file for it
- $(OBJDIR)/%.o: %.cpp $(MAKEFILE_LIST)
- @echo $(MSG_COMPILE_CMD) Compiling C++ file \"$(notdir $<)\"
- $(CROSS)-gcc -c $(BASE_CC_FLAGS) $(BASE_CPP_FLAGS) $(CC_FLAGS) $(CPP_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
-
- # Assembles an input ASM source file and generates a linkable object file for it
- $(OBJDIR)/%.o: %.S $(MAKEFILE_LIST)
- @echo $(MSG_ASSEMBLE_CMD) Assembling \"$(notdir $<)\"
- $(CROSS)-gcc -c $(BASE_CC_FLAGS) $(BASE_ASM_FLAGS) $(CC_FLAGS) $(ASM_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
-
- # Generates a library archive file from the user application, which can be linked into other applications
- .PRECIOUS : $(OBJECT_FILES)
- .SECONDARY : %.a
- %.a: $(OBJECT_FILES)
- @echo $(MSG_ARCHIVE_CMD) Archiving object files into \"$@\"
- $(CROSS)-ar rcs $@ $(OBJECT_FILES)
-
- # Generates an ELF debug file from the user application, which can be further processed for FLASH and EEPROM data
- # files, or used for programming and debugging directly
- .PRECIOUS : $(OBJECT_FILES)
- .SECONDARY : %.elf
- %.elf: $(OBJECT_FILES)
- @echo $(MSG_LINK_CMD) Linking object files into \"$@\"
- $(CROSS)-gcc $^ -o $@ $(BASE_LD_FLAGS) $(LD_FLAGS)
-
- # Extracts out the loadable FLASH memory data from the project ELF file, and creates an Intel HEX format file of it
- %.hex: %.elf
- @echo $(MSG_OBJCPY_CMD) Extracting HEX file data from \"$<\"
- $(CROSS)-objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
-
- # Extracts out the loadable FLASH memory data from the project ELF file, and creates an Binary format file of it
- %.bin: %.elf
- @echo $(MSG_OBJCPY_CMD) Extracting BIN file data from \"$<\"
- $(CROSS)-objcopy -O binary -R .eeprom -R .fuse -R .lock -R .signature $< $@
-
- # Extracts out the loadable EEPROM memory data from the project ELF file, and creates an Intel HEX format file of it
- %.eep: %.elf
- @echo $(MSG_OBJCPY_CMD) Extracting EEP file data from \"$<\"
- $(CROSS)-objcopy -O ihex -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings $< $@ || exit 0
-
- # Creates an assembly listing file from an input project ELF file, containing interleaved assembly and source data
- %.lss: %.elf
- @echo $(MSG_OBJDMP_CMD) Extracting LSS file data from \"$<\"
- $(CROSS)-objdump -h -d -S -z $< > $@
-
- # Creates a symbol file listing the loadable and discarded symbols from an input project ELF file
- %.sym: %.elf
- @echo $(MSG_NM_CMD) Extracting SYM file data from \"$<\"
- $(CROSS)-nm -n $< > $@
-
- # Include build dependency files
- -include $(DEPENDENCY_FILES)
-
- # Phony build targets for this module
- .PHONY: build_begin build_end size symbol-sizes lib elf hex lss clean mostlyclean
|