python __anonymous () {
    #check if there are any dtb providers
    providerdtb = d.getVar("PREFERRED_PROVIDER_virtual/dtb")
    if providerdtb:
       d.appendVarFlag('do_configure', 'depends', ' virtual/dtb:do_populate_sysroot')
       if d.getVar("DTB_NAME") is not None:
           d.setVar('DTB_NAME', 'system-top.dtb')
}

DTB_PATH ?= "/boot/devicetree"
DTB_NAME ?= ""

EXTRA_OEMAKE += "${@'EXT_DTB=${RECIPE_SYSROOT}/${DTB_PATH}/${DTB_NAME}' if (d.getVar('DTB_NAME', True) != '') else '' }"