4.3.1. Elaborating Your Design
VHDL netlist files do not contain system task calls to locate your .sdf file; therefore, you must compile the standard .sdo file manually. Locate the .sdo file in the same directory where you run elaboration or simulation. Otherwise, the $sdf_annotate task cannot reference the .sdo file correctly. If you are starting an elaboration or simulation from a different directory, you can either comment out the $sdf_annotate and annotate the .sdo file with the GUI, or add the full path of the .sdo file.
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