ifeq ($(ANDROID_NDK_ROOT),)
$(error Error : Set the env variable 'ANDROID_NDK_ROOT' with the path of the Android NDK (version 20))
endif

CC := $(ANDROID_NDK_ROOT)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android27-clang
AR := $(ANDROID_NDK_ROOT)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ar
OBJCOPY := $(ANDROID_NDK_ROOT)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-objcopy
LD := $(ANDROID_NDK_ROOT)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ld.bfd

#==================Target Samsung S7 (8890)==================
CFLAGS_SAMSUNGS7 = -Os

stage1:
	$(CC) entry.S -c -o entry.o $(CFLAGS_SAMSUNGS7)
	$(CC) $(CFLAGS_SAMSUNGS7) -c stage1.c -o stage1.o
	$(LD) -T linkscript.ld entry.o stage1.o -o stage1.elf --just-symbols=symbols.txt
	$(OBJCOPY) -O binary stage1.elf stage1.bin