Googled how to make xcode project file from cmake: CMake Tutorial – Chapter 2: IDE Integration. This should remember:

cmake -G "Xcode"

This lists all the targets and all the build configurations set up in the Xcode project:

xcodebuild -list

This runs building:

xcodebuild

Interesting to know Google maintains ios-cmake.

Interesting info on topic: How to include a CMake project in a Xcode project.