S = "${WORKDIR}${@source_path(d)}"

CURRENT_SRC_URI := "${SRC_URI}"

SRC_URI = "${@source_uri(d)}"


def source_path(d):
    var = d.getVar("EXTERNAL_TREE_VAR")
    tree_path = d.getVar(var)

    if tree_path:
        return tree_path
    else:
        return "/" + d.getVar("BP")

def source_uri(d):
    var = d.getVar("EXTERNAL_TREE_VAR")
    tree_path = d.getVar(var)

    if tree_path:
        return "file://" + tree_path
    else:
        return d.getVar("CURRENT_SRC_URI")

# Set debug build if $EXTERNAL_TREE_VAR is set for faster builds
DEBUG_BUILD = "${@debug_build(d)}"

def debug_build(d):
    var = d.getVar("EXTERNAL_TREE_VAR")
    tree_path = d.getVar(var)
    if tree_path:
        return "1"
    else:
        return "0"