Doc: Describe specifying supported OS versions for iOS apps

Change-Id: I55e73c898c4e92ba083211732964af2f0a22e78f
Reviewed-by: Jake Petroules's avatarJake Petroules <jake.petroules@qt.io>
parent 4388b5b6
......@@ -128,6 +128,26 @@
If the current device state is \uicontrol Connected, (the traffic light icon is
orange), you need to configure the device using Xcode.
\section1 Specifying Supported iOS Versions
Qt 5 applications can be built for the latest iOS version and deployed to
previous versions. For the most part, this works automatically. However,
you must take care when you manually set your own target version. If you set
it to a value higher than what Qt requires and supply your own \c Info.plist
file, you must add an \c LSMinimumSystemVersion entry to the \c Info.plist
that matches the value of \c QMAKE_IOS_DEPLOYMENT_TARGET (when using qmake)
or \c cpp.minimumIosVersion (when using Qbs), because iOS (and the
App Store) will use the \c LSMinimumSystemVersion value as the authoritative
one.
If you specify a deployment target value lower than what Qt requires, your
application will almost certainly crash somewhere in the Qt libraries when
run on an older version than Qt supports. Therefore, make sure that the
actual build system code reflects the minimum iOS version that is actually
required.
For more information, see \l{Expressing Supported iOS Versions}.
\section1 Testing on iOS Simulator
If you do not have an iOS device or you do not want to create an account,
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