# output files
# mostlyclean - Remove intermediatary output files, but
# preserve binaries
+# <filename>.s - Compile C/C++ source file into an assembly file
+# for manual code inspection
#
# MANDATORY PARAMETERS:
#
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 )
+# 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)\".
+# Checks all target source files and provides information on whether they exist or not
check-source:
@for f in $(SRC); do \
if [ ! -f $$f ]; then \
fi; \
done
+# 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) $< ; 2>/dev/null;
+# 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 intermediatary 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).eep $(TARGET).map $(TARGET).lss $(TARGET).sym $(TARGET).a
-all: build_begin check-source elf hex lss sym size build_end
+# Performs a complete build of the user application and prints size information afterwards
+all: build_begin elf hex lss sym size build_end
+# Helper targets, to build a specific type of output file without having to know the project target name
lib: lib$(TARGET).a
elf: $(TARGET).elf
hex: $(TARGET).hex $(TARGET).eep
lss: $(TARGET).lss
sym: $(TARGET).sym
+# Default target to *create* the user application's specified source files; if this rule is executed by
+# make, the input source file doens't exist and an error needs to be presented to the user
+$(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 $(BASE_LD_FLAGS) $(LD_FLAGS) $^ -o $@
+# 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 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 -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex $< $@ || 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 -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 $< > $@
projects / pub / lufa.git / blobdiff