build-uuitk-bionic-amd64.md

Install Qt == 5.9.X from https://qt.io (or from the archives).

Install required dependencies (See debian packaging: https://github.com/ubports/ubuntu-ui-toolkit/blob/xenial/debian/control).

If you are using Qt from the archives, run:

sudo apt install \
  libdbus-1-dev \
  libevdev-dev \
  libfontconfig1-dev \
  libfreetype6-dev \
  libgl1-mesa-dri \
  libgles2-mesa-dev \
  libglib2.0-dev \
  libinput-dev \
  liblttng-ust-dev \
  libmtdev-dev \
  libnih-dbus-dev \
  libqt5sql5-sqlite \
  libqt5svg5-dev \
  libudev-dev \
  libx11-dev \
  libxcb1-dev \
  libxi-dev \
  libxkbcommon-dev \
  libxrender-dev \
  qml-module-qt-labs-settings \
  qml-module-qtgraphicaleffects \
  qml-module-qtqml-models2 \
  qml-module-qtquick-layouts \
  qml-module-qtquick-localstorage \
  qml-module-qtquick-window2 \
  qml-module-qtquick2 \
  qml-module-qttest \
  qt5-default \
  qtbase5-dev \
  qtbase5-private-dev \
  qtdeclarative5-dev \
  qtdeclarative5-dev-tools \
  qtdeclarative5-private-dev \
  qtdeclarative5-unity-action-plugin \
  qttools5-dev-tools \
  xvfb
  # Note: qtpim5-dev is missing here because the archive version is too old ...

Install Qt modules missing from the installer from source (or the respective packages from the archive):

git clone http://code.qt.io/cgit/qt/qtsystems.git
cd qtsystems
mkdir build && cd build
qmake ..
make
make install

git clone http://code.qt.io/cgit/qt/qtpim.git
cd qtpim
git checkout 0bd985b
mkdir build && cd build
qmake ..
make
make install

git clone http://code.qt.io/cgit/qt/qtfeedback.git/
cd qtfeedback
mkdir build && cd build
qmake ..
make
make install

git clone https://github.com/ubports/ubuntu-ui-toolkit
cd ubuntu-ui-toolkit
# Building in . because when using a shadow build, installing fails with app-launch-tracepoints :(
# Using CONFIG+=warn_off as otherwise g++ will fail with -Werror=suggest-override
qmake . CONFIG+=warn_off CONFIG+=no_docs
make

For some reason, qmlplugindump which is invoked in order to create plugins.qmltypes doesn't find all required libraries in $QTDIR/lib, therefore we need to patch the wrappers it creates by running:

qt_install_libs_path="$(qmake -query QT_INSTALL_LIBS)";

find . -type f -name "wrapper.sh" -exec sed -i "s~export LD_LIBRARY_PATH.*~export LD_LIBRARY_PATH=$qt_install_libs_path:\$LD_LIBRARY_PATH~g" {} +;

make install

Note: have only tried this with my Qt installation which was created using the qt.io online installer.