1 ARCH		= aarch64
2 TARGET		= ${ARCH}-none-elf
3 BOARD       ?=qemu_virt
4 
5 BIN			= /usr/local/bin/
6 
7 AS			= ${BIN}clang
8 ASFLAGS		= -target ${TARGET}
9 ASFILES		= boot.o
10 
11 CXX			= ${BIN}clang++
12 CXXFLAGS	= -target ${TARGET} -Wall -Wextra -nostdlib -fno-exceptions
13 CXXFLAGS    += -ffreestanding -mgeneral-regs-only
14 CXXFLAGS    += -Iinclude
15 CXXFILES	= kernel.cc uart_${BOARD}.cc
16 
17 OBJS        = ${ASFILES:.S=.o} ${CXXFILES:.cc=.o}
18 LD			= ${BIN}ld.lld
19 
20 .PHONY:	clean
21 
22 all: squat.img
23 
24 squat.img: squat.elf
25 	llvm-objcopy squat.elf -O binary squat.img
26 
27 squat.elf: linker.ld ${OBJS}
28 	${LD} -T linker.ld -o squat.elf ${OBJS}
29 
30 .S.o:
31 	${AS} ${ASFLAGS} -c boot.S -o boot.o
32 
33 clean:
34 	rm -rf *.o squat.elf squat.img