Install qtdeclarative5-dev by entering the following commands in the terminal:
sudo apt update sudo apt install qtdeclarative5-dev
Description:
Qt 5 declarative development files
Qt is a cross-platform C++ application framework. Qt's primary feature is its rich set of widgets that provide standard GUI functionality. . This package contains the header development files for building some Qt 5 applications using Qt 5 declarative headers.
Homepage: http://qt-project.org/
Version: 5.9.5-0ubuntu1
Section: universe/libdevel