Authorities say they will use force if necessary to move its occupants.
Almost 3,000 people are squatting in life-threatening, swamp-like conditions near Dunkirk.
The reclusive artist has been busy at a refugee camp in France.
The library promotes "a calming atmosphere in a very chaotic place."
An estimated 5,000 refugees are living in a camp in Calais, France.
A British teacher is using books to help refugees get back on their feet.
"Traffic in the tunnel is suspended because of burning tires, which are the result of port workers," a Eurotunnel spokeswoman