###########################################################################
#
# Rules.mk - Contains common makefile support for the Robostix sameples
#
###########################################################################

AVR_MCU = atmega128

all: $(TARGET)

$(TARGET) : % : %.hex
				 
.PHONY: all $(TARGET)

CROSS_COMPILE	= avr-

CC		= $(CROSS_COMPILE)gcc
OBJCOPY	= $(CROSS_COMPILE)objcopy

AVR_MCU_FLAGS	= -mmcu=$(AVR_MCU)

vpath %.c ../Common

CFLAGS += -Os -Wall
CPPFLAGS += $(AVR_MCU_FLAGS) -I . -I ../Common
LDFLAGS  += $(AVR_MCU_FLAGS) -Wl,-Map,$(basename $@).map

DEP_OUTPUT_OPTION = -MMD -MF $(@:.o=.d)

ECHO	= @echo
RM		= rm

COMMON_DEPS = $(strip $(COMMON_OBJS:.o=.d))

DEP_FILES = $(TARGET).d $(COMMON_DEPS)

#--------------------------------------------------------------------------
#
# 	Run make with v=1 or verbose=1 to get verbose output
#

ifeq ($(v),)
export verbose = 0
else
export verbose = 1
endif

ifeq ($(verbose),)
export verbose = 0
endif

ifeq ($(verbose),0)
	Q = @
	MAKEFLAGS += -s
else
	Q =
endif
export Q

#--------------------------------------------------------------------------
#
#	CFLAGS 		= flags used for C compiler
#	CXXFLAGS	= flags for the C++ compiler
#	CPPFLAGS	= flags for the C preprocessor (-D, -I)
#

PREPROCESS.c = $(CC) $(CPPFLAGS) $(TARGET_ARCH) -E -Wp,-C,-dD,-dI

#--------------------------------------------------------------------------
#
#	The FORCE target can be used for things that you want to have rebuild
# 	every single time (like *.pp files)
#

FORCE:

.PHONY: FORCE

#--------------------------------------------------------------------------
#
# Compile C source files
#
#   COMPILE.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
#

.PRECIOUS: %.o

%.o : %.c
	$(ECHO) "Compiling $< ..."
	$(Q)$(COMPILE.c) $(DEP_OUTPUT_OPTION) $(OUTPUT_OPTION) $<

#--------------------------------------------------------------------------
#
# Generate Preprocessed files from C source (useful for debugging)
#

%.pp : %.c FORCE
	$(ECHO) "Preprocessing $< ..."
	$(Q)$(PREPROCESS.c) $< > $@

#--------------------------------------------------------------------------
#
# Generate C/asm listing
#

%.cod : %.c FORCE
	$(ECHO) "Listing $< ..."
	$(Q)$(COMPILE.c) -gstabs -Wa,-ahdlms=$@ $<

#--------------------------------------------------------------------------
#
# Create a hex file from an elf file
#

%.hex : %.elf
	$(ECHO) "Creating $@ ..."
	$(Q)$(OBJCOPY) -j .text -j .data -O ihex $< $@
	$(ECHO)

#--------------------------------------------------------------------------
#
# Create simple executables
#

%.elf : %.o $(COMMON_OBJS)
	$(ECHO) "Linking $@ ..."
	$(Q)$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@
	$(ECHO)
	avr-mem.sh $@ $(AVR_MCU)
	$(ECHO)

clean: clean-other clean-hex

clean-other:
	$(ECHO) "Removing generated files ..."
	$(Q)$(RM) -f *.d *.o *.elf *.map

clean-hex:
	$(ECHO) "Removing hex files ..."
	$(Q)$(RM) -f *.hex

#--------------------------------------------------------------------------
#
# Include dependencies.
#
# The '-' at the beginning tells make not to complain about missing
# dependency files.
#

ifneq ($(DEP_FILES),)
ifeq ($(strip $(filter clean% exec print-%, $(MAKECMDGOALS))),)
-include $(DEP_FILES)
endif
endif