From Sigil's home page (
sigil-ebook.com) you can go to the "
Get" page for the specifics of getting Sigil on the three platforms (Windows, OS X, Linux). The Sigil on Linux section has a direct link to the
'docs' directory in Sigil's Github Repository, where the BuildingOnLinux documents are first in the list.
If you think a direct link to the Linux documentation from the main README file (instead of the current directions for how to find them that exist there) will be more helpful, I'll certainly see about adding that. I'm just not sure I agree that there's much "hunting" to be done for those who are looking. The 'docs' folder is a fairly traditional location to put additional documentation in a source archive after all.
Thanks for your input.