Steps to reproduce:
 
cd /c/QNX/710. qnxsdp-env.sh
Should result in output like so:QNX_HOST=/c/Users/<user>/qnx710/host/win64/x86_64QNX_TARGET=/c/Users/<user>/qnx710/target/qnx7MAKEFLAGS=-I/c/Users/<user>/qnx710/target/qnx7/usr/include
cd /c/Qt/6.5.2
mkdir build_qnx_msvc
cd build_qnx_msvc/
export QT_HOST=/c/Qt/6.5.2/msvc2019_64/
export TOOLCHAIN_FILE=/c/Qt/6.5.2/Src/coin/provisioning/common/shared/cmake_toolchain_files/qnx-toolchain-aarch64le.cmake
/c/Qt/6.5.2/Src/configure -release -force-debug-info -no-dbus -nomake examples -no-pch
cmake -GNinja -DCMAKE_TOOLCHAIN_FILE=$TOOLCHAIN_FILE -DQT_HOST_PATH=$QT_HOST -DCMAKE_INSTALL_PREFIX=/c/Qt/6.5.2/qnx_install -DCMAKE_BUILD_WITH_INSTALL_RPATH=ON /c/Qt/6.5.2/Src/
cmake --build . --parallel
cmake --install .

This is where I observe the following failure:

– Up-to-date: C:/Qt/6.5.2/qnx_install/include/QtAppManLauncher/QtAppManLauncherDepends
– Up-to-date: C:/Qt/6.5.2/qnx_install/include/QtAppManLauncher/6.5.2/QtAppManLauncher/private/applicationmanagerwindow_p.h
– Up-to-date: C:/Qt/6.5.2/qnx_install/mkspecs/modules/qt_lib_appman_launcher_private.pri
– Up-to-date: C:/Qt/6.5.2/qnx_install/bin/appman-controller
– Up-to-date: C:/Qt/6.5.2/qnx_install/bin/appman-dumpqmltypes
CMake Error at qtapplicationmanager/src/tools/dumpqmltypes/cmake_install.cmake:58 (file):
  file INSTALL cannot find "C:/Qt/6.5.2/Src/qmltypes/QtApplicationManager":
  No such file or directory.
Call Stack (most recent call first):
  qtapplicationmanager/src/cmake_install.cmake:142 (include)
  qtapplicationmanager/cmake_install.cmake:47 (include)
  cmake_install.cmake:117 (include)