pls Fix the code

[asna-absent]

in src/osgEarthDrivers/lerc/CMakeLists.txt you have to remove add_osgearth_plugin to run cmake.
i think it's wrong. and it works in last versions.

[jasonbeverage]

You are probably missing the submodules which pull down some lerc headers you need. You can clone the osgearth repo like this:

git clone --recurse-submodules https://github.com/gwaldron/osgearth.git repo

Or if you already have the repo cloned you can do this to pull them down.

cd osgearth
git submodule update --init