if [[ -z $BANAN_ROOT_DIR ]]; then
	if [[ -z $BANAN_SCRIPT_DIR ]]; then
		export BANAN_ROOT_DIR=$BANAN_SCRIPT_DIR/..
	else
		echo  "You must set the BANAN_ROOT_DIR environment variable" >&2
		exit 1
	fi
fi

if [[ -z $BANAN_ARCH ]]; then
	echo  "You must set the BANAN_ARCH environment variable" >&2
	exit 1
fi

export BANAN_TOOLCHAIN_DIR=$BANAN_ROOT_DIR/toolchain
export BANAN_TOOLCHAIN_PREFIX=$BANAN_TOOLCHAIN_DIR/local
export BANAN_TOOLCHAIN_TRIPLE_PREFIX=$BANAN_ARCH-banan_os

export BANAN_BUILD_DIR=$BANAN_ROOT_DIR/build

export BANAN_SYSROOT=$BANAN_BUILD_DIR/sysroot

export BANAN_DISK_IMAGE_PATH=$BANAN_BUILD_DIR/banan-os.img

if [[ -z $BANAN_UEFI_BOOT ]]; then
	export BANAN_UEFI_BOOT=0
fi