Qt for iOS - Building from Source
Building Qt for iOS from sources requires Xcode with Command Line Tools installed. You can install Xcode Command Line Tools directly using xcode-select –install from you terminal or as a package using Homebrew. Qt sources can be obtained either by cloning the repositories or downloading the source package(s).
To cross-build Qt, you need a host build of Qt first. See Cross-compiling Qt for details.
You can then configure and build Qt. This is done from the Qt top directory:
> ./configure -platform macx-ios-clang -release -qt-host-path <path_to_host_qt_installation>
Note: configure always uses the Ninja generator and build tool if a ninja executable is available. Ninja is cross-platform, feature-rich, performant, and recommended on all platforms. The use of other generators might work but is not officially supported.
For other configure options, see Qt Configure Options.
Then, simply run cmake --build . --parallel.
Note: A default build will include both simulator and device libraries. If you want to build for a single target, use the -sdk argument with either iphoneos or iphonesimulator.