Adding /usr/src using freebsd-update

[Doug Denault]

My motivation for wanting to do this is basically because updating 
11.3-->12.2 broke my Lenovo Ideapad. This is a "well known" and apparently 
has a workaround but I could not find a combination that worked following 
the very helpful suggestion out of the X11 mailing list or google. What did 
work was 13.0-RC2. Out of the box following UPDATING and pkg notes. 
Whatever the issue was it was obviously complex involving the interaction 
of several components in Xorg, FreeBSD and whether or nor EFI booting was 
used. All except the last one are perfectly obvious. I only mention this as 
background for why not use git or subversion (for a while anyway).

The fix required that kernel sources be available. On the Lenovo that 
happened not to be a problem. On another laptop I did not have /usr/src so 
freebsd-update did not add/update it and I saw no option to add /usr/src. 
The conf file apparently says take care of it if it is there.

On my HP no /usr/src. I did a package add for git adding 32 required 
packages and the installed failed to deliver a working git command. So on 
to subversion with similar results. This with 12.2.

As I had already updated to 12.2 and it was working I removed all packages, 
copied a 12.1 /usr/src from another server and did a fetch. This added in 
the files new to 12.2 and did report doing anything else, so I rather doubt 
this is a "good" version of the src tree.

All of the above for my real question. since I had a number of 11.3 
/usr/src trees, if I had just added that before doing an upgrade I think 
that will work. Correct?


_____
Douglas Denault
http://www.safeport.com
doug at safeport.com
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   Fax: 301-217-9277