issue for compiling QT source with "fakechroot fakeroot debootstrap"

Hi,

We try to compile the Qt with Debootstrap, but see some strange issue.

My compiling steps:

1.) On Ubuntu 20.04, Bootstrap a the focal (ubuntu20.04) base system in folder 'stage-focal-fake' with below command:

       fakechroot fakeroot debootstrap focal ~/temp/stage-focal-fake

2.) copy the license and untar the Qt source to $HOME(/home/ubuntu)

       cp ~/.qt-license ~/temp/stage-focal-fake/home/ubuntu

       tar -xf qt-everywhere-src-5.12.3.tar.tar -C ~/temp/stage-focal-fake/home/ubuntu

3.) enter the focal (ubuntu20.04) base system

       fakechroot fakeroot chroot stage-focal-fake

4.) install necessary libs...

       apt-get update

       apt install gcc g++ make libgl1-mesa-dev libegl1-mesa-dev libgbm1 libdrm-dev pkg-config libpng16-16 net-tools vim

       apt install ...

5.) configure the QT, but see errors as below:

root@ip-10-132-42-52:~/qt-everywhere-src-5.12.3# ./configure -prefix /opt/qt5123 -commercial -no-fontconfig -nomake tests -nomake examples -recheck-all -no-qml-debug -no-assimp -confirm-license -release -strip -skip serialbus

+ cd qtbase

+ /home/ubuntu/qt-everywhere-src-5.12.3/qtbase/configure -top-level

+ -verbose -prefix /opt/qt5123 -commercial -no-fontconfig -nomake tests

+ -nomake examples -recheck-all -no-qml-debug -no-assimp

+ -confirm-license -release -strip -skip serialbus

Creating qmake...

Cannot read /home/ubuntu/qt-everywhere-src-5.12.3: No such file or directory Error processing project file: /home/ubuntu/qt-everywhere-src-5.12.3

root@ip-10-132-42-52:~/qt-everywhere-src-5.12.3# ls /home/ubuntu/qt-everywhere-src-5.12.3

LICENSE.FDL     coin   qtandroidextras qtgamepad       qtquickcontrols qtspeech     qtwebglplugin

LICENSE.GPLv2     configure   qtbase   qtgraphicaleffects qtquickcontrols2 qtsvg       qtwebsockets

LICENSE.GPLv3     configure.bat   qtcanvas3d     qtimageformats     qtremoteobjects   qttools     qtwebview

LICENSE.LGPLv21     configure.json qtcharts   qtlocation       qtscript   qttranslations     qtwinextras

LICENSE.LGPLv3     gnuwin32   qtconnectivity   qtmacextras       qtscxml   qtvirtualkeyboard qtx11extras

LICENSE.QT-LICENSE-AGREEMENT-4.0 qt.pro   qtdatavis3d   qtmultimedia       qtsensors qtwayland     qtxmlpatterns

README     qt3d   qtdeclarative   qtnetworkauth       qtserialbus qtwebchannel

_clang-format     qtactiveqt   qtdoc     qtpurchasing       qtserialport qtwebengine

root@ip-10-132-42-52:~/qt-everywhere-src-5.12.3# 

Please help have a check!

Thanks!

Xinlun