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#									#
#             Makefile for Hardware Demonstration Programs              #
#                                                                       #
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# Author:   John Zaitseff <J.Zaitseff@unsw.edu.au>
# Date:     9th March, 2003
# Version:  1.0

# This Makefile creates the executable images for all of the programs that
# illustrate various aspects of the DSLMU Microcontroller Board.  You
# should read the source code for the programs to see what each program is
# meant to do.
#
# Assuming that you have the GNU Assembler and C Compiler for the ARM
# microcontroller installed, type "make" to create the executable images.
# After you finish, type "make clean" to remove all created files.


# The first target is the default: typing "make" is the same as typing
# "make all".  The target "all" lists a number of other targets as its
# dependencies (ie, "all" depends on these other targets).  Note that "\"
# at the end of the line means "this line continues onto the next one".

all:	\
	flash-leds \
	teletype


clean:
	-rm -f \
		flash-leds.elf flash-leds.o \
		teletype.elf   teletype.o


# flash-leds: Flash the LEDs on and off

flash-leds:	flash-leds.elf
flash-leds.elf:	flash-leds.o
flash-leds.o:	flash-leds.s

# teletype: Echo characters received from the serial port

teletype:	teletype.elf
teletype.elf:	teletype.o
teletype.o:	teletype.s


# The following variables and implicit rules are required for the GNU
# Assembler and the GNU Compiler for ARM.  You probably do not need to
# modify anything here.

AS       = arm-elf-as
CC       = arm-elf-gcc
LD       = arm-elf-ld

ASFLAGS  = --gdwarf2
CFLAGS   = -O2 -g -Wall
LDFLAGS  =
LDLIBS   =

# Assemble ARM assembly language source to an object file

%.o: %.s
	$(AS) -marm7tdmi $(ASFLAGS) $< -o $@

# Compile C code to an object file

%.o: %.c
	$(CC) -c -mcpu=arm7tdmi $(CFLAGS) $< -o $@

# Compile C code into ARM assembly language

%.s: %.c
	$(CC) -S -fverbose-asm -mcpu=arm7tdmi $(CFLAGS) $< -o $@

# Link object files into an ARM executable, using the GNU Linker.

%.elf: %.o
	$(LD) $(LDFLAGS) $^ $(LDLIBS) -o $@


# Miscellaneous rules

.PHONY:	all clean
.DEFAULT:
.SUFFIXES: