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<https://github.com/The-OpenROAD-Project/OpenLane/issues/1832|#1832 Warn when default `base.sdc` file is used>
Issue created by <https://github.com/donn|donn>
*Description*

OpenLane uses the included `base.sdc` file transparently if an SDC file is not set.

*Proposal*

Designers should generally be using a more... tailored SDC file. Nothing inherently wrong with using `base.sdc` but at the very least, a warning should be printed.
<https://github.com/The-OpenROAD-Project/OpenLane|The-OpenROAD-Project/OpenLane>