When working from source NAP requires Qt v5.15.2 which for most major platforms can be downloaded from qt.io. Once deployed Qt should then be pointed to with the environment QT_DIR so it can be picked up by NAP.
eg. on Linux for x86_64 in your .bashrc this might look like
export QT_DIR=/home/username/Qt/5.11.3/gcc_64
For published NAP Framework Releases Qt is included within and doesn't need to be downloaded separately.
We've rolled our own Qt builds for Linux ARMhf (Raspbian Buster on Raspberry Pi v4) and ARM64 (Ubuntu 20.04) which are available here:
These should be deployed and identified with the environment variable as described above.
These processes were developed for a Raspberry Pi 4 running Rasbian Buster and an ARM64 host running Ubuntu 20.04.
Environment preparation
sudo apt install build-essential libfontconfig1-dev libdbus-1-dev libfreetype6-dev libicu-dev libinput-dev libxkbcommon-dev libsqlite3-dev libssl-dev libpng-dev libjpeg-dev libglib2.0-dev ibx11-dev libxcb1-dev libxext-dev libxi-dev libxcomposite-dev libxcursor-dev libxtst-dev libxrandr-dev libfontconfig1-dev libfreetype6-dev libx11-xcb-dev libxext-dev libxfixes-dev libxi-dev libxrender-dev libxcb1-dev libxcb-glx0-dev libxcb-keysyms1-dev libxcb-image0-dev libxcb-shm0-dev libxcb-icccm4-dev libxcb-sync-dev libxcb-xfixes0-dev libxcb-shape0-dev libxcb-randr0-dev libxcb-render-util0-dev libxcb-util0-dev libxcb-xinerama0-dev libxcb-xkb-dev libxkbcommon-dev libxkbcommon-x11-dev
Download and extract source
mkdir src
cd src
wget https://download.qt.io/official_releases/qt/5.15/5.15.2/single/qt-everywhere-src-5.15.2.tar.xz
tar xf qt-everywhere-src-5.15.2.tar.xz
The contents of build-aux/ (located alongside this file) should be deployed into qtbase/mkspecs within the extracted Qt framework path.
These are are based on https://github.com/oniongarlic/qt-raspberrypi-configuration.git and other configurations, but not focusing on EGLFS.
sudo apt install libgles2-mesa-dev libgbm-dev libdrm-dev
mkdir build
cd build
PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig:/usr/share/pkgconfig \
../qt-everywhere-src-5.15.2/configure -platform linux-rpi4-v3d-g++ \
-v \
-opengl desktop \
-no-gtk \
-opensource -confirm-license -release \
-reduce-exports \
-force-pkg-config \
-nomake examples -no-compile-examples -nomake tests \
-skip qt3d \
-skip qtactiveqt \
-skip qtandroidextras \
-skip qtcanvas3d \
-skip qtcharts \
-skip qtdatavis3d \
-skip qtgamepad \
-skip qtgraphicaleffects \
-skip qtlocation \
-skip qtmacextras \
-skip qtpurchasing \
-skip qtquickcontrols \
-skip qtquickcontrols2 \
-skip qtscript \
-skip qtscxml \
-skip qtsensors \
-skip qtserialbus \
-skip qtserialport \
-skip qtspeech \
-skip qttools \
-skip qttranslations \
-skip qtvirtualkeyboard \
-skip qtwayland \
-skip qtwebengine \
-skip qtwebview \
-skip qtwinextras \
-skip qtx11extras \
-skip wayland \
-qt-pcre \
-no-pch \
-no-use-gold-linker \
-no-cups \
-ssl \
-evdev \
-system-freetype \
-system-libjpeg \
-system-libpng \
-system-zlib \
-fontconfig \
-glib \
-make libs \
-prefix /opt/Qt/5.15.2 \
-qpa xcb \
-dbus-linked \
-no-gbm \
-no-eglfs \
-no-linuxfb \
-recheck
mkdir build
cd build
../qt-everywhere-src-5.15.2/configure \
-platform linux-rpi64-vc4-g++ \
-v \
-opengl desktop \
-no-gtk \
-opensource -confirm-license -release \
-reduce-exports \
-force-pkg-config \
-nomake examples -no-compile-examples -nomake tests \
-skip qt3d \
-skip qtactiveqt \
-skip qtandroidextras \
-skip qtcanvas3d \
-skip qtcharts \
-skip qtdatavis3d \
-skip qtgamepad \
-skip qtgraphicaleffects \
-skip qtlocation \
-skip qtmacextras \
-skip qtpurchasing \
-skip qtquickcontrols \
-skip qtquickcontrols2 \
-skip qtscript \
-skip qtscxml \
-skip qtsensors \
-skip qtserialbus \
-skip qtserialport \
-skip qtspeech \
-skip qttools \
-skip qttranslations \
-skip qtvirtualkeyboard \
-skip qtwayland \
-skip qtwebengine \
-skip qtwebview \
-skip qtwinextras \
-skip qtx11extras \
-skip wayland \
-qt-pcre \
-no-pch \
-no-use-gold-linker \
-no-cups \
-ssl \
-reduce-exports \
-evdev \
-system-freetype \
-system-libjpeg \
-system-libpng \
-system-zlib \
-fontconfig \
-glib \
-make libs \
-prefix /opt/Qt/5.15.2 \
-qpa xcb \
-dbus-linked \
-no-gbm \
-no-eglfs \
-no-linuxfb \
-recheck
make -j4
sudo make install
Create the tarball from /opt/Qt/5.15.2.
Cross compilation to ARMhf (Raspberry Pi 4) via a Docker image and QEMU repetitively failed. Bare metal is recommended for now.
The following were used in developing this process:
https://www.tal.org/tutorials/building-qt-515-raspberry-pi
https://github.com/koendv/qt5-opengl-raspberrypi
The licenses contained here are packaged into the NAP Framework Release when the Qt framework used doesn't contain an available source.