virtualkeyboard basic example fails to build with iOS

Build output: 10:52:27: Running steps for project basic...
10:52:27: Configuration unchanged, skipping qmake step.
10:52:27: Starting: "/usr/bin/make" -j8
xcodebuild build  -allowProvisioningUpdates -project basic.xcodeproj -scheme basic   -configuration Release  -destination "generic/platform=iOS" -destination-timeout 1  ENABLE_ONLY_ACTIVE_RESOURCES=NO 
Command line invocation:
    /Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild build -allowProvisioningUpdates -project basic.xcodeproj -scheme basic -configuration Release -destination generic/platform=iOS -destination-timeout 1 ENABLE_ONLY_ACTIVE_RESOURCES=NO

User defaults from command line:
    IDEPackageSupportUseBuiltinSCM = YES

Build settings from command line:
    ENABLE_ONLY_ACTIVE_RESOURCES = NO

2022-04-26 10:52:28.246 xcodebuild[15231:16065059] CFURLRequestSetHTTPCookieStorageAcceptPolicy_block_invoke: no longer implemented and should not be called
note: Using new build system
note: Planning
Analyze workspace

Create build description
Build description signature: d719bc3d004c9898e990d372026885cc
Build description path: /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/XCBuildData/d719bc3d004c9898e990d372026885cc-desc.xcbuild

note: Build preparation complete
note: Building targets in dependency order
PhaseScriptExecution Qt\ Qmake /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/basic.build/Release-iphoneos/Qt\ Preprocess.build/Script-5E618435888B9D49F8540165.sh (in target 'Qt Preprocess' from project 'basic')
    cd /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release
    /bin/sh -c /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/basic.build/Release-iphoneos/Qt\\\ Preprocess.build/Script-5E618435888B9D49F8540165.sh
make[1]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
make[1]: `basic.xcodeproj/project.pbxproj' is up to date.

PhaseScriptExecution Qt\ Preprocessors /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/basic.build/Release-iphoneos/Qt\ Preprocess.build/Script-7EF0942E79C014DCEC8976BC.sh (in target 'Qt Preprocess' from project 'basic')
    cd /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release
    /bin/sh -c /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/basic.build/Release-iphoneos/Qt\\\ Preprocess.build/Script-7EF0942E79C014DCEC8976BC.sh
make[1]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
make[1]: Nothing to be done for `preprocess'.

warning: Traditional headermap style is no longer supported; please migrate to using separate headermaps and set 'ALWAYS_SEARCH_USER_PATHS' to NO. (in target 'basic' from project 'basic')
Ld /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/Release-iphoneos/basic.app/basic normal (in target 'basic' from project 'basic')
    cd /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -target arm64-apple-ios12.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.2.sdk -L/Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/Release-iphoneos -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/plugins/platforms -L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.2.sdk/System/Library/Frameworks/ -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/lib -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/plugins/iconengines -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/plugins/imageformats -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/plugins/qmltooling -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/plugins/bearer -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQml -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQml/Models.2 -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQml/WorkerScript.2 -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQuick.2 -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQuick/Templates.2 -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQuick/Controls.2 -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQuick/Controls.2/Fusion -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQuick/Controls.2/Universal -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQuick/Controls.2/Material -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtGraphicalEffects/private -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQuick/Window.2 -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtGraphicalEffects -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/qml/QtQuick/Controls.2/Imagine -F/Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/Release-iphoneos -filelist /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/basic.build/Release-iphoneos/basic.build/Objects-normal/arm64/basic.LinkFileList -dead_strip -Xlinker -object_path_lto -Xlinker /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/basic.build/Release-iphoneos/basic.build/Objects-normal/arm64/basic_lto.o -fembed-bitcode-marker -stdlib\=libc++ -Wl,-e,_qt_main_wrapper -Wl,-rpath,@executable_path/Frameworks -L/Users/qt/RTA/Qt_5.15.10/5.15.10/ios/plugins/platforms -lqtvirtualkeyboardplugin -framework AssetsLibrary -framework MobileCoreServices -lm -lz -framework OpenGLES -lqios -framework QuartzCore -framework AudioToolbox -lQt5FontDatabaseSupport -lqtfreetype -lQt5GraphicsSupport -lQt5ClipboardSupport -lqsvgicon -lqgif -lqicns -lqico -lqjpeg -lqtlibjpeg -lqmacheif -lqmacjp2 -framework ImageIO -lqsvg -lqtga -lqtiff -lqwbmp -lqwebp -lqmldbg_debugger -lqmldbg_inspector -lqmldbg_local -lqmldbg_messages -lqmldbg_native -lqmldbg_nativedebugger -lqmldbg_preview -lqmldbg_profiler -lqmldbg_quickprofiler -lqmldbg_server -lQt5PacketProtocol -lqmldbg_tcp -lqgenericbearer -lQt5Svg -lQt5Widgets -lqmlplugin -lmodelsplugin -lworkerscriptplugin -lqtquick2plugin -lQt5QmlWorkerScript -lqtquicktemplates2plugin -lqtquickcontrols2plugin -lqtquickcontrols2fusionstyleplugin -lqtquickcontrols2universalstyleplugin -lqqc2materialstyleplugin -lqtgraphicaleffectsprivate -lwindowplugin -lqtgraphicaleffectsplugin -lqtquickcontrols2imaginestyleplugin -lQt5QuickControls2 -lQt5QuickTemplates2 -lQt5Quick -lQt5Gui -framework Metal -lqtlibpng -lqtharfbuzz -framework CoreText -framework CoreGraphics -lQt5QmlModels -lQt5Qml -lQt5Network -framework Security -framework SystemConfiguration -framework GSS -lQt5Core -framework UIKit -framework CoreFoundation -framework Foundation -lqtpcre2 -Xlinker -no_adhoc_codesign -Xlinker -dependency_info -Xlinker /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/basic.build/Release-iphoneos/basic.build/Objects-normal/arm64/basic_dependency_info.dat -o /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/Release-iphoneos/basic.app/basic
ld: library not found for -lqtvirtualkeyboardplugin
clang: error: linker command failed with exit code 1 (use -v to see invocation)

** BUILD FAILED **


The following build commands failed:
	Ld /Users/qt/RTA/Qt_5.15.10/Examples/Qt-5.15.10/virtualkeyboard/build-basic-Qt_5_15_10_for_iOS-Release/Release-iphoneos/basic.app/basic normal (in target 'basic' from project 'basic')
(1 failure)
make: *** [xcodebuild-release-device] Error 65
10:52:29: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project basic (kit: Qt 5.15.10 for iOS)
When executing step "Make"
10:52:29: Elapsed time: 00:02.
                                                                                                                                                                                                        LOG 10:52:40