1 AS		= clang
2 CXX		= clang++
3 LD		= ld.lld
4 OBJCOPY		= llvm-objcopy
5 
6 ARCH		= aarch64
7 TARGET		= ${ARCH}-none-elf
8 BOARD		= virt
9 
10 -include	config.mk
11 
12 ASFLAGS		= -target ${TARGET}
13 ASFILES		= boot.o
14 
15 CXXFLAGS	= -target ${TARGET} -Wall -Wextra -nostdlib -fno-exceptions
16 CXXFLAGS	+=-ffreestanding -mgeneral-regs-only
17 CXXFLAGS	+=-Iinclude -std=c++11
18 CXXFILES	= kernel.cc uart_${BOARD}.cc
19 
20 OBJS		= ${ASFILES:.S=.o} ${CXXFILES:.cc=.o}
21 
22 .PHONY:	clean qemu gdb-remote
23 
24 all: squat.img
25 
26 squat.img: squat.elf
27 	${OBJCOPY} squat.elf -O binary squat.img
28 
29 squat.elf: linker.ld ${OBJS}
30 	${LD} -T linker.ld -o squat.elf ${OBJS}
31 
32 .S.o:
33 	${AS} ${ASFLAGS} -c boot.S -o boot.o
34 
35 clean:
36 	rm -rf *.o squat.elf squat.img
37 
38 qemu: squat.img
39 	qemu-system-${ARCH} -M ${BOARD} -cpu cortex-a53 \
40 			    -kernel squat.img -nographic -monitor none -serial stdio
41 gdb-remote: squat.img
42 	qemu-system-${ARCH} -s -S -M ${BOARD} -cpu cortex-a53 \
43 			    -kernel squat.img -nographic -monitor none -serial stdio