Hello, On Mon, 3 Jun 2019 14:47:09 +0800 Guo Ren <guoren@xxxxxxxxxx> wrote: > Qemu upstream is under way and I want to add host-qemu for C-SKY after that. > > See here: > https://gitlab.com/c-sky/buildroot/tree/master/package/csky-qemu > I don't use package/qemu to build csky qemu and I add another > csky-qemu package for simple. Well, why not simply adding C-SKY support to the existing package/qemu ? It should be fairly easy, just change the version/source/site, and that's it ? Since you're in the process of upstreaming, I assume you're using a recent version of Qemu, so all the logic in qemu.mk for upstream Qemu should apply to the C-SKY variant as well. Best regards, Thomas -- Thomas Petazzoni, CTO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com