--- /dev/null
+#
+# AltOS build
+#
+#
+
+include ../samd21/Makefile.defs
+
+INC = \
+ ao.h \
+ ao_arch.h \
+ ao_arch_funcs.h \
+ ao_boot.h \
+ ao_pins.h \
+ ao_product.h \
+ ao_task.h \
+ samd21.h \
+ Makefile
+
+ALTOS_SRC = \
+ ao_boot_chain.c \
+ ao_romconfig.c \
+ ao_interrupt.c \
+ ao_product.c \
+ ao_cmd.c \
+ ao_task.c \
+ ao_led.c \
+ ao_stdio.c \
+ ao_panic.c \
+ ao_timer.c \
+ ao_mutex.c \
+ ao_dma_samd21.c \
+ ao_usb_samd21.c \
+ ao_spi_samd21.c
+
+# SAMD21G18A
+
+SAMD21_ROM=256
+SAMD21_RAM=32
+
+PRODUCT=SnekBoard
+PRODUCT_DEF=-DSNEKBOARD
+IDPRODUCT=0x000a
+
+CFLAGS = $(PRODUCT_DEF) $(SAMD21_CFLAGS)
+
+PROGNAME=snekboard
+PROG=$(PROGNAME)-$(VERSION).elf
+HEX=$(PROGNAME)-$(VERSION).ihx
+
+SRC=$(ALTOS_SRC) snekboard.c
+OBJ=$(SRC:.c=.o)
+
+all: $(PROG) $(HEX)
+
+$(PROG): Makefile $(OBJ)
+ $(call quiet,CC) $(LDFLAGS) -o $(PROG) $(OBJ) $(LIBS)
+
+$(OBJ): $(INC)
+
+load: $(PROG)
+ stm-load $(PROG)
+
+distclean: clean
+
+clean:
+ rm -f *.o $(PROGNAME)-*.elf $(PROGNAME)-*.ihx $(PROGNAME)-*.map
+ rm -f ao_product.h
+
+install:
+
+uninstall: