diff options
Diffstat (limited to 'lib/lufa/LUFA/Build/DMBS/DMBS/gcc.mk')
| -rw-r--r-- | lib/lufa/LUFA/Build/DMBS/DMBS/gcc.mk | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/lib/lufa/LUFA/Build/DMBS/DMBS/gcc.mk b/lib/lufa/LUFA/Build/DMBS/DMBS/gcc.mk new file mode 100644 index 0000000000..6126cf97fc --- /dev/null +++ b/lib/lufa/LUFA/Build/DMBS/DMBS/gcc.mk @@ -0,0 +1,273 @@ +# +# DMBS Build System +# Released into the public domain. +# +# dean [at] fourwalledcubicle [dot] com +# www.fourwalledcubicle.com +# + +DMBS_BUILD_MODULES += GCC +DMBS_BUILD_TARGETS += size symbol-sizes all lib elf bin hex lss clean mostlyclean +DMBS_BUILD_MANDATORY_VARS += TARGET ARCH MCU SRC +DMBS_BUILD_OPTIONAL_VARS += COMPILER_PATH 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 JUMP_TABLES +DMBS_BUILD_PROVIDED_VARS += +DMBS_BUILD_PROVIDED_MACROS += + +# Conditionally import the CORE module of DMBS if it is not already imported +DMBS_MODULE_PATH := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST)))) +ifeq ($(findstring CORE, $(DMBS_BUILD_MODULES)),) + include $(DMBS_MODULE_PATH)/core.mk +endif + +# Default values of optionally user-supplied variables +COMPILER_PATH ?= +OPTIMIZATION ?= s +F_CPU ?= +C_STANDARD ?= gnu99 +CPP_STANDARD ?= gnu++98 +C_FLAGS ?= +CPP_FLAGS ?= +ASM_FLAGS ?= +CC_FLAGS ?= +OBJDIR ?= obj +OBJECT_FILES ?= +DEBUG_FORMAT ?= dwarf-2 +DEBUG_LEVEL ?= 2 +LINKER_RELAXATIONS ?= Y +JUMP_TABLES ?= N + +# Sanity check user supplied values +$(foreach MANDATORY_VAR, $(DMBS_BUILD_MANDATORY_VARS), $(call ERROR_IF_UNSET, $(MANDATORY_VAR))) +$(call ERROR_IF_EMPTY, MCU) +$(call ERROR_IF_EMPTY, TARGET) +$(call ERROR_IF_EMPTY, ARCH) +$(call ERROR_IF_EMPTY, OPTIMIZATION) +$(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) +$(call ERROR_IF_NONBOOL, LINKER_RELAXATIONS) +$(call ERROR_IF_NONBOOL, JUMP_TABLES) + +# Determine the utility prefix to use for the selected architecture +ifeq ($(ARCH), AVR8) + CROSS := $(COMPILER_PATH)avr +else ifeq ($(ARCH), XMEGA) + CROSS := $(COMPILER_PATH)avr +else ifeq ($(ARCH), UC3) + CROSS := $(COMPILER_PATH)avr32 +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 -p $(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$(DEBUG_LEVEL) +ifneq ($(findstring $(ARCH), AVR8 XMEGA),) + BASE_CC_FLAGS += -mmcu=$(MCU) -fshort-enums -fno-inline-small-functions -fpack-struct +else ifneq ($(findstring $(ARCH), UC3),) + BASE_CC_FLAGS += -mpart=$(MCU:at32%=%) -masm-addr-pseudos +endif +BASE_CC_FLAGS += -Wall -fno-strict-aliasing -funsigned-char -funsigned-bitfields -ffunction-sections +BASE_CC_FLAGS += -I. +BASE_CC_FLAGS += -DARCH=ARCH_$(ARCH) +ifneq ($(F_CPU),) + BASE_CC_FLAGS += -DF_CPU=$(F_CPU)UL +endif +ifeq ($(LINKER_RELAXATIONS), Y) + BASE_CC_FLAGS += -mrelax +endif +ifeq ($(JUMP_TABLES), N) + # This flag is required for bootloaders as GCC will emit invalid jump table + # assembly code for devices with large amounts of flash; the jump table target + # is extracted from FLASH without using the correct ELPM instruction, resulting + # in a pseudo-random jump target. + BASE_CC_FLAGS += -fno-jump-tables +endif + +# Additional language specific compiler flags +BASE_C_FLAGS := -x c -O$(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 ($(LINKER_RELAXATIONS), Y) + BASE_LD_FLAGS += -Wl,--relax +endif +ifneq ($(findstring $(ARCH), AVR8 XMEGA),) + BASE_LD_FLAGS += -mmcu=$(MCU) +else ifneq ($(findstring $(ARCH), UC3),) + BASE_LD_FLAGS += -mpart=$(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 $(DMBS_BUILD_TARGETS) |