In this version, you can use \c, c-function and
add-lib only inside c-library...end-c-library.
add-lib now always starts from a clean slate inside a
c-library, so you don’t need to use clear-libs in most
cases.
If you have a program that uses these words outside
c-library...end-c-library, just wrap them in
c-library...end-c-library. You may have to add some
instances of add-lib, however.