title: Using `xcodebuild` to do a command line builds for Catalyst/UIKit for Mac?
body: <p>I cannot see this documented anywhere — has anyine figured our how to use xcodebuild to build a propject for UIKIt for Mac (i.e. Catalyst)?</p>
  
  <p>You can specify "-sdk iphoneos" vs "-sdk iphonesimulator" to toggle between those two targets, but "-sdk uikitformac" does not seem to work ("SDK not found"), despite Xcode itself using that nomenclature (e.g., it builds to a "Debug-uikitformac" folder, etc). i also tried different SDK values that might have made sense (such as "-sdk macabi"), but no avail.</p>
  
  <p>Suggestions?</p>