Configure RTL elaboration behavior using properties on the source fileset, as shown in the following example:
# Control OOC IP representation in elaboration
set_property elab_ip_rtls true [current_fileset]
# Control how DCP sources are linked (netlist vs blackbox)
set_property elab_link_dcps true [current_fileset]
# Apply constraints during elaboration
set_property elab_load_timing_constraints true [current_fileset]