Configure summary:

Qt WebEngine Build Tools:
  Use System Ninja ....................... no
  Use System Gn .......................... no
  Jumbo Build Merge Limit ................ 8
  Developer build ........................ no
  Sanitizer .............................. no
  QtWebEngine required system libraries:
    fontconfig ........................... yes
    dbus ................................. yes
    nss .................................. yes
    khr .................................. yes
    glibc ................................ yes
  Optional system libraries used:
    re2 .................................. no
    icu .................................. no
    libwebp, libwebpmux and libwebpdemux . no
    opus ................................. no
    ffmpeg ............................... no
    libvpx ............................... no
    snappy ............................... no
    glib ................................. no
    zlib ................................. yes
    minizip .............................. no
    libevent ............................. no
    jsoncpp .............................. no
    protobuf ............................. no
    libxml2 and libxslt .................. no
    lcms2 ................................ no
    png .................................. yes
    JPEG ................................. yes
    harfbuzz ............................. no
    freetype ............................. yes
Qt WebEngineCore:
  Embedded build ......................... yes
  Full debug information ................. no
  Pepper Plugins ......................... yes
  Printing and PDF ....................... no
  Proprietary Codecs ..................... yes
  Spellchecker ........................... yes
  Native Spellchecker .................... no
  WebRTC ................................. no
  Geolocation ............................ no
  WebChannel support ..................... no
  Kerberos Authentication ................ no
  Extensions ............................. no
  Support qpa-xcb ........................ no
  Building v8 snapshot supported ......... yes
  Use ALSA ............................... yes
  Use PulseAudio ......................... no
Qt WebEngineQml:
  Support Qt WebEngine Qml ............... yes
  UI Delegates ........................... yes
  Test Support ........................... no
Qt WebEngineWidgets:
  Support Qt WebEngine Widgets ........... yes
Qt PDF:
  Support V8 ............................. no
  Support XFA ............................ no
  Support XFA-BMP ........................ no
  Support XFA-GIF ........................ no
  Support XFA-PNG ........................ no
  Support XFA-TIFF ....................... no
Qt PDF Widgets:
  Support Qt PDF Widgets ................. yes

Qt is now configured for building. Just run 'make'.
Once everything is built, you must run 'make install'.
Qt will be installed into '/opt/qt5pi/targetBinaries'.

Prior to reconfiguration, make sure you remove any leftovers from
the previous build.