obj = test.o
efiso = test.so
efibin = bootx64.efi

inc = -I/usr/include/efi -I/usr/include/efi/x86_64 -I/usr/include/efi/protocol
def = -DEFI_FUNCTION_WRAPPER
eficrt = /usr/lib/crt0-efi-x86_64.o
ldscript = /usr/lib/elf_x86_64_efi.lds

CFLAGS = -pedantic -Wall $(inc) $(def) -fno-stack-protector -fPIC -fshort-wchar \
		 -mno-red-zone
LDFLAGS = -nostdlib -znocombreloc -T $(ldscript) -L/usr/lib $(eficrt) -lefi -lgnuefi

.PHONY: all
all: $(efibin)

$(efiso): $(obj)
	$(LD) -o $@ -shared -Bsymbolic $(obj) $(LDFLAGS)

$(efibin): $(efiso)
	objcopy -j .text -j .sdata -j .data -j .dynamic -j .dynsym -j .rel \
		-j .rela -j .reloc --target=efi-app-x86_64 $< $@

part.img: $(efibin)
	dd if=/dev/zero of=$@ bs=1024 count=2080
	mkfs -t vfat $@
	mmd -i $@ ::/EFI
	mmd -i $@ ::/EFI/BOOT
	mcopy -i $@ $< ::/EFI/BOOT

disk.img: part.img
	dd if=/dev/zero of=$@ bs=1024 count=2048
	echo start=2048 type=ef | sfdisk $@
	dd if=$< of=$@ bs=512 seek=2048 conv=notrunc


.PHONY: clean
clean:
	rm -f $(obj) $(efibin) $(efiso) *.img