Lazarus does not support targeting iOS, at least not using the LCL (you can compile iOS programs using Lazarus by just using Lazarus as an IDE to compile and build code that uses the standard FPC units). Additionally, FPC currently does not ship the CocoaAll unit for iOS. This is a remnant of the past where Apple forbade the distribution of any derivatives of the iOS SDKs. That could be changed now, although such a CocoaAll unit would be largely untested.