Hi Gui! On Fri, Jan 06, 2017 at 09:28:47PM +0100, Gui Iribarren wrote: The SDK allows you to build software which matches the existing binaries it was generated along with. As long as this is only about user-space stuff, one could as well just use the buildroot at the same revision as what was used to generate the binaries. However, say you want to update batman-adv or change it's compile- time options, for that you'll really need the SDK. Apart from that, it's just a handy thing because you won't need to build everything from scratch (toolchain, ...) in order to update a single package (say: polarssl) on an existing ROM. Imho, lime should itself be built using the SDK of an OpenWrt/LEDE release instead of using the buildroot and compiling everything from scratch. In that way, it'd become much easier to reproduce bugs and we could just file them at the official OpenWrt/LEDE bugtrackers. One could then use the ImageBuilder build an image based on the official release and just add the needed lime packages to it. Cheers Daniel