You access the panoramic feature of the Leica D-ux (Type 109) via the drive menu – it’s right up the end of the list. The Panasonic Lumix LX100 works the same way.
The camera fires off numerous frames and stitches them together for you. I haven’t really had a lot of time to analyse the results, but a quick look shows they look pretty good.
I was going to post a full-res version, but it’s over 7000 pixels wide. Here’s one which is 2000.