I built from source (option #2).   I had to acquire a pcre-devel library, which was done by issuing the following command first:

sudo apt-cache search pcre

This was located here:

https://stackoverflow.com/questions/2263404/what-package-i-should-install-for-pcre-devel

I found this by googling pcre dev.  It told me to grep “dev” (which I did).   Afterwards, I was able to issue:

sudo apt-get install libpcre2-dev

After this command, I was able to issue this one:

sudo apt-get install libpcre-dev

A new user is looking for a “recipe” of commands to use.

It seems a real shame, because the repository is clearly marked and somebody spent some time getting it operational.   It just doesn’t have the “git clone https://ci1.netdef.org/browse/LIBYANG-YANGRELEASE/latestSuccessful/artifact somename.git”.   I would have chosen option #1 if it did.  Instead, I chose to build libyang from source.

Mike Mazarick