open-source-silicon.dev

or at least have the results shown visually?

I just learnt this from <@U016HU5HK8V>:
• start flow interactive with -tag of your latest run: /flow.tcl -design spinet5 -interactive -tag 30-11_11-37
• type the following commands:
• package require openlane
• run_magic_antenna_check

this should run the antenna check  and will show you which cells have what length antennas

You can then load the `results/routing/xxx.def` in `magic` and  `select cell __11111__`  then `findbox`.  pressing `s` 3 times quickly on a wire will highlight it so you can follow it.

You can also look in `runs/XXX/reports/routing/antenna.rpt`  and this is the OpenRoad antenna report.

It will also list the cell and the port that has the antenna violations, along with the net.

It actually shows _every_ cell / node / net, you need to search for `*`  (asterisk) to see where violations occurs.

<@U016PTY0C2E>:  Antenna violations aren't checked "in the background" like DRC, but you can run the checks directly from the command line with the following commands:  "extract do local ; extract all ; antennacheck".  Results will be in "feedback" entries which can be queried similarly to DRC violations, but using the commands "feedback why" and/or "feedback find".