I noticed that Linux is now available as a packaging option on Windows in Unreal Engine 4.7. Choosing it, however, opens a web browser and lands on the UE4 Docs home page. Is it supposed to be linking to a doc explaining the currently required process for packaging to Linux or is this a placeholder that was left in? Will we see this feature implemented in 4.8?
As far as I know Linux packaging has been working since at least 4.4, as I used it to cook all the Linux demos on the Wiki with it.
Perhaps you have some missing components or misconfiguration in your system? Also, did you check the Cross-Compiling guide at A new, community-hosted Unreal Engine Wiki - Announcements and Releases - Unreal Engine Forums ?
We were able to reproduce this and get a report in. We’re not sure exactly what happened, but we will make sure it gets fixed ASAP.