Компиляция QtWebEngine изначально на Raspberry Pi

Question

Я пытаюсь скомпилировать QtWebEngine на Raspberry Pi 3. Вся библиотека Qt скомпилирована нормально, но когда я пытаюсь запустить make в каталоге с QtWebEngine, я получаю следующее:

pi@raspberrypi:~/qt5/qtwebengine$ /usr/local/qt5/bin/qmake 

Running configuration tests...
Done running configuration tests.

Configure summary:

Qt WebEngine:
  Embedded build ......................... yes
  Pepper Plugins ......................... no
  Printing and PDF ....................... no
  Proprietary Codecs ..................... no
  Spellchecker ........................... yes
  Native Spellchecker .................... no
  WebRTC ................................. no
  Use System Ninja ....................... no
  Geolocation ............................ no
  WebChannel support ..................... yes
  Use v8 snapshot ........................ yes
  Kerberos Authentication ................ no
  Building v8 snapshot supported ......... yes
  Use ALSA ............................... yes
  Use PulseAudio ......................... no
      Optional system libraries used:
    re2 .................................. no
    icu .................................. no
    libwebp, libwebpmux and libwebpdemux . no
    opus ................................. no
    ffmpeg ............................... no
    libvpx ............................... no
    snappy ............................... no
    glib ................................. no
    zlib ................................. no
    minizip .............................. no
    libevent ............................. no
    jsoncpp .............................. no
    protobuf ............................. no
    libxml2 and libxslt .................. no
    lcms2 ................................ no
    png .................................. no
    JPEG ................................. yes
    harfbuzz ............................. no
    freetype ............................. no
    x11 .................................. no
  Required system libraries:
    fontconfig ........................... no
    dbus ................................. no
    nss .................................. no
    khr .................................. yes
    glibc ................................ yes
  Required system libraries for qpa-xcb:
    libdrm ............................... no
    xcomposite ........................... no
    xcursor .............................. no
    xi ................................... no
    xtst ................................. no

WARNING: Thumb instruction set is required to build ffmpeg for QtWebEngine.

Qt is now configured for building. Just run 'make'.
Once everything is built, you must run 'make install'.
Qt will be installed into '/usr/local/qt5'.

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


pkg-config is required
QtWebEngine will not be built.

Вопросы:

1. Почему его нельзя скомпилировать?Из-за библиотек fontconfig, dbus и nss?

2. Я пытался установить libfontconfig1-dev, но он уже установлен.То же самое с dbus и nss.

3. Что я делаю не так?