Desktop file and icon are missing

[probonopd]

Desktop file and icon are missing when installing this application with make install. Please change your .pro file it similar to https://github.com/probonopd/FeedTheMonkey/blob/master/FeedTheMonkey.pro.

Here is another simple example.

It is common on Unix to also use the build tool to install applications and libraries; for example, by invoking make install. For this reason, qmake has the concept of an install set, an object which contains instructions about the way a part of a project is to be installed.

Please see the section "Installing Files" on http://doc.qt.io/qt-5/qmake-advanced-usage.html.