10.4.1 Built sources example

Suppose that `foo.c' includes `bindir.h', which is installation-dependent and not distributed: it needs to be built. Here `bindir.h' defines the preprocessor macro bindir to the value of the make variable bindir (inherited from `configure').

We suggest several implementations below. It's not meant to be an exhaustive listing of all ways to handle built sources, but it will give you a few ideas if you encounter this issue.