I&#x27;ve pondered the same question and I really have no clear answer.<p>But I also think you&#x27;re not obligated to provide as much as you think.  You have to provide source (easy enough), but you really don&#x27;t have to actually give them all the tools to build it do you?  Be nice and point to the Yocto build you used and say you got your gcc toolsuite from there.<p>As for installation, all you really need to do is provide a way to <i>replace</i> the libraries.  I wouldn&#x27;t give out an entire rebuild&#x2F;reflash suite or anything.  Make a hidden screen in the program somewhere to let you mount a USB drive and replace the libQt?.so.4 files.  And that&#x27;s it.  If they brick it, you shrug and say &quot;not my deal&quot;.<p>In all my time I&#x27;ve never encountered anyone that actually wanted to <i>do</i> any of this.  It&#x27;s all a formality, especially when Qt literally does everything you need.  I&#x27;m not even really sure what you would want to hack on Qt in the first place.