makefile_x86_64

.PHONY: bootstrap
bootstrap: bin/kernelx64.elf

# we want to use clang and output a PE/COFF formatted file
# these are the zig flags
ZFLAGS = \
				-target x86_64-uefi \
				-fClang \
				-ofmt=coff \
				--subsystem efi_application \
				-fLLD

# we want a freestanding executable
CFLAGS+= \
        -target x86_64-unknown-windows \
        -ffreestanding \
				-mcmodel=large \
				-fno-pic       \
        -fshort-wchar  \
        -mno-red-zone  \
				-Wall

# force use of LLVM Linker and output a PE/COFF formatted file
LDFLAGS+= \
        -target x86_64-unknown-windows \
        -nostdlib \
        -Wl,-entry:efi_main \
        -Wl,-subsystem:efi_application \
        -fuse-ld=lld

bin/kernelx64.elf: bin/efi/boot bin/uefi_bootstrap.obj bin/efi/boot/bootx64.efi
	cd kernel && make -f makefile_x86_64

bin/efi/boot:
	mkdir -p $@

bin/uefi_bootstrap.obj: bootstrap/uefi_bootstrap.zig
	zig build-obj $(ZFLAGS) -femit-bin=$@ -cflags $(CFLAGS) -- $^

bin/efi/boot/bootx64.efi: bin/uefi_bootstrap.obj
	clang $(CFLAGS) -o $@ bin/uefi_bootstrap.obj $(LDFLAGS)