title: What is a sysroot exactly and how do I create one ?
body: <p>I'm working with QT and embedded devices and in many documentation items ( <a href="http://doc.qt.io/QtQuick2DRenderer/qtquick2drenderer-installation-guide.html" rel="noreferrer">like here</a>) they are talking about sysroots. I've searched the web but I couldn't find anything about what a sysroot is. I have a cross-compiler-toolchain though. What's a sysroot and how do I create one ?</p>