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238 lines
9.0 KiB
238 lines
9.0 KiB
#
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# LUFA Library
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# Copyright (C) Dean Camera, 2012.
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#
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# dean [at] fourwalledcubicle [dot] com
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# www.lufa-lib.org
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#
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LUFA_BUILD_MODULES += BUILD
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LUFA_BUILD_TARGETS += size symbol-sizes all elf hex lss clean
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LUFA_BUILD_MANDATORY_VARS += TARGET ARCH MCU SRC F_USB LUFA_PATH
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LUFA_BUILD_OPTIONAL_VARS += BOARD OPTIMIZATION C_STANDARD CPP_STANDARD F_CPU C_FLAGS CPP_FLAGS ASM_FLAGS CC_FLAGS LD_FLAGS
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# -----------------------------------------------------------------------------
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# LUFA GCC Compiler Buildsystem Makefile Module.
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# -----------------------------------------------------------------------------
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# DESCRIPTION:
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# Provides a set of targets to build a C, C++ and/or Assembly application
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# via the AVR-GCC compiler.
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# -----------------------------------------------------------------------------
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# TARGETS:
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#
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# size - List built application size
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# symbol-sizes - Print application symbols from the binary ELF
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# file as a list sorted by size in bytes
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# all - Build application and list size
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# elf - Build application ELF debug object file
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# hex - Build application HEX object files
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# lss - Build application LSS assembly listing file
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# clean - Remove output files
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#
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# MANDATORY PARAMETERS:
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#
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# TARGET - Application name
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# ARCH - Device architecture name
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# MCU - Microcontroller device model name
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# SRC - List of input source files (*.c, *.cpp, *.S)
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# F_USB - Speed of the input clock of the USB controller
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# in Hz
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# LUFA_PATH - Path to the LUFA library core
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#
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# OPTIONAL PARAMETERS:
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#
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# BOARD - LUFA board hardware
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# OPTIMIZATION - Optimization level
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# C_STANDARD - C Language Standard to use
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# CPP_STANDARD - C++ Language Standard to use
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# F_CPU - Speed of the CPU, in Hz
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# C_FLAGS - Flags to pass to the C compiler only
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# CPP_FLAGS - Flags to pass to the C++ compiler only
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# ASM_FLAGS - Flags to pass to the assembler only
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# CC_FLAGS - Common flags to pass to the C/C++ compiler and
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# assembler
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# LD_FLAGS - Flags to pass to the linker
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#
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# -----------------------------------------------------------------------------
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ERROR_IF_UNSET = $(if $(filter undefined, $(origin $(strip $(1)))), $(error Makefile $(strip $(1)) value not set))
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ERROR_IF_EMPTY = $(if $(strip $($(strip $(1)))), , $(error Makefile $(strip $(1)) option cannot be blank))
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ERROR_IF_NONBOOL = $(if $(filter Y N, $($(strip $(1)))), , $(error Makefile $(strip $(1)) option must be Y or N))
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# Default values of optionally user-supplied variables
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BOARD ?= NONE
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OPTIMIZATION ?= s
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F_CPU ?=
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C_STANDARD ?= gnu99
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CPP_STANDARD ?= gnu++98
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C_FLAGS ?=
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CPP_FLAGS ?=
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ASM_FLAGS ?=
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CC_FLAGS ?=
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# Sanity check user supplied values
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$(foreach MANDATORY_VAR, $(LUFA_BUILD_MANDATORY_VARS), $(call ERROR_IF_UNSET, $(MANDATORY_VAR)))
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$(call ERROR_IF_EMPTY, MCU)
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$(call ERROR_IF_EMPTY, TARGET)
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$(call ERROR_IF_EMPTY, ARCH)
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$(call ERROR_IF_EMPTY, F_USB)
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$(call ERROR_IF_EMPTY, LUFA_PATH)
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$(call ERROR_IF_EMPTY, BOARD)
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$(call ERROR_IF_EMPTY, OPTIMIZATION)
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$(call ERROR_IF_EMPTY, C_STANDARD)
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$(call ERROR_IF_EMPTY, CPP_STANDARD)
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# Determine the utility prefix to use for the selected architecture
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ifeq ($(ARCH), AVR8)
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CROSS := avr-
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else ifeq ($(ARCH), XMEGA)
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CROSS := avr-
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$(warning The XMEGA device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
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else ifeq ($(ARCH), UC3)
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CROSS := avr32-
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$(warning The UC3 device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
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else
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$(error Unsupported architecture "$(ARCH)")
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endif
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# Output Messages
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MSG_BUILD_BEGIN := Begin compilation of project \"$(TARGET)\"...
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MSG_BUILD_END := Finished building project \"$(TARGET)\".
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MSG_COMPILE_CMD := ' [CC] :'
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MSG_ASSEMBLE_CMD := ' [AS] :'
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MSG_NM_CMD := ' [NM] :'
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MSG_REMOVE_CMD := ' [RM] :'
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MSG_LINKER_CMD := ' [LNK] :'
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MSG_SIZE_CMD := ' [SIZE] :'
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MSG_OBJCPY_CMD := ' [OBJCPY] :'
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MSG_OBJDMP_CMD := ' [OBJDMP] :'
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# Convert input source file list to differentiate them by type
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C_SOURCE = $(filter %.c, $(SRC))
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CPP_SOURCE = $(filter %.cpp, $(SRC))
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ASM_SOURCE = $(filter %.S, $(SRC))
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# Create a list of unknown source file types, if any are found throw an error
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UNKNOWN_SOURCE = $(filter-out $(C_SOURCE) $(CPP_SOURCE) $(ASM_SOURCE), $(SRC))
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ifneq ($(UNKNOWN_SOURCE),)
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$(error Unknown input source formats: $(UNKNOWN_SOURCE))
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endif
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# Convert input source filenames into a list of required output object files
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OBJECT_FILES = $(filter %.o, $(C_SOURCE:%.c=%.o) $(CPP_SOURCE:%.cpp=%.o) $(ASM_SOURCE:%.S=%.o))
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DEPENDENCY_FILES = $(OBJECT_FILES:%.o=%.d)
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# Create a list of common flags to pass to the compiler/linker/assembler
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BASE_CC_FLAGS :=
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ifeq ($(ARCH), AVR8)
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BASE_CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
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else ifeq ($(ARCH), XMEGA)
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BASE_CC_FLAGS += -mmcu=$(MCU) -gdwarf-2 -fshort-enums -fno-inline-small-functions -fpack-struct
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else ifeq ($(ARCH), UC3)
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BASE_CC_FLAGS += -mpart=$(MCU:at32%=%) -g3 -masm-addr-pseudos
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endif
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BASE_CC_FLAGS += -Wall -fno-strict-aliasing -funsigned-char -funsigned-bitfields -ffunction-sections
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BASE_CC_FLAGS += -I. -I$(patsubst %/,%,$(LUFA_PATH))/..
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BASE_CC_FLAGS += -DARCH=ARCH_$(ARCH) -DBOARD=BOARD_$(BOARD) -DF_USB=$(F_USB)UL
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ifneq ($(F_CPU),)
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BASE_CC_FLAGS += -DF_CPU=$(F_CPU)UL
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endif
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# Additional language specific compiler flags
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BASE_C_FLAGS := -x c -O$(OPTIMIZATION) -std=$(C_STANDARD) -Wstrict-prototypes
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BASE_CPP_FLAGS := -x c++ -O$(OPTIMIZATION) -std=$(CPP_STANDARD)
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BASE_ASM_FLAGS := -x assembler-with-cpp
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# Create a list of flags to pass to the linker
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BASE_LD_FLAGS := -lm -Wl,-Map=$(TARGET).map,--cref -Wl,--gc-sections
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ifeq ($(ARCH), UC3)
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BASE_LD_FLAGS += --rodata-writable --direct-data
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else
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BASE_LD_FLAGS += -Wl,--relax
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endif
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# Determine flags to pass to the size utility based on its reported features
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SIZE_MCU_FLAG := $(shell $(CROSS)size --help | grep -- --mcu > /dev/null && echo --mcu=$(MCU) )
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SIZE_FORMAT_FLAG := $(shell $(CROSS)size --help | grep -- --format=.*avr > /dev/null && echo --format=avr )
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begin:
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@echo ""
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@echo $(MSG_BUILD_BEGIN)
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@echo ""
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end:
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@echo ""
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@echo $(MSG_BUILD_END)
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@echo ""
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gcc_version:
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@$(CROSS)gcc --version
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check_source:
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@for f in $(SRC); do \
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if [ ! -f $$f ]; then \
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echo "Error: Source file not found: $$f"; \
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exit 1; \
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fi; \
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done
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size: $(TARGET).elf
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@echo $(MSG_SIZE_CMD) Determining size of \"$<\"
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@if test -f $(TARGET).elf; then \
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$(CROSS)size $(SIZE_MCU_FLAG) $(SIZE_FORMAT_FLAG) $< ; 2>/dev/null; \
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fi
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symbol-sizes: $(TARGET).elf
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@echo $(MSG_NM_CMD) Extracting \"$<\" symbols with decimal byte sizes
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avr-nm --size-sort --demangle --radix=d $<
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clean:
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@echo $(MSG_REMOVE_CMD) Removing object files of \"$(TARGET)\"
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rm -f $(OBJECT_FILES)
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@echo $(MSG_REMOVE_CMD) Removing dependency files of \"$(TARGET)\"
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rm -f $(DEPENDENCY_FILES)
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@echo $(MSG_REMOVE_CMD) Removing output files of \"$(TARGET)\"
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rm -f $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).map $(TARGET).lss
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all: begin check_source gcc_version elf hex lss size end
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elf: $(TARGET).elf
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hex: $(TARGET).hex $(TARGET).eep
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lss: $(TARGET).lss
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%.o: %.c $(MAKEFILE_LIST)
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@echo $(MSG_COMPILE_CMD) Compiling C file \"$<\"
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$(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_C_FLAGS) $(CC_FLAGS) $(C_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
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%.o: %.cpp $(MAKEFILE_LIST)
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@echo $(MSG_COMPILE_CMD) Compiling C++ file \"$<\"
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$(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_CPP_FLAGS) $(CC_FLAGS) $(CPP_FLAGS) -MMD -MP -MF $(@:%.o=%.d) $< -o $@
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%.o: %.S $(MAKEFILE_LIST)
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@echo $(MSG_ASSEMBLE_CMD) Assembling \"$<\"
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$(CROSS)gcc -c $(BASE_CC_FLAGS) $(BASE_ASM_FLAGS) $(CC_FLAGS) $(ASM_FLAGS) $< -o $@
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.PRECIOUS : $(OBJECT_FILES)
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%.elf: $(OBJECT_FILES)
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@echo $(MSG_LINKER_CMD) Linking object files into \"$@\"
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$(CROSS)gcc $(BASE_CC_FLAGS) $(BASE_LD_FLAGS) $(CC_FLAGS) $(LD_FLAGS) $^ -o $@
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%.hex: %.elf
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@echo $(MSG_OBJCPY_CMD) Extracting HEX file data from \"$<\"
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$(CROSS)objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
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%.eep: %.elf
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@echo $(MSG_OBJCPY_CMD) Extracting EEP file data from \"$<\"
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$(CROSS)objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex $< $@ || exit 0
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%.lss: %.elf
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@echo $(MSG_OBJDMP_CMD) Extracting LSS file data from \"$<\"
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$(CROSS)objdump -h -S -z $< > $@
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# Include build dependency files
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-include $(DEPENDENCY_FILES)
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# Phony build targets for this module
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.PHONY: begin end gcc_version check_source size symbol-sizes elf hex lss clean
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