File: autoconf.info,  Node: Dependencies Between Macros,  Next: Obsoleting Macros,  Prev: Macro Names,  Up: Writing Autoconf Macros

10.3 Dependencies Between Macros
================================

Some Autoconf macros depend on other macros having been called first in
order to work correctly.  Autoconf provides a way to ensure that certain
macros are called if needed and a way to warn the user if macros are
called in an order that might cause incorrect operation.

* Menu:

* Prerequisite Macros::         Ensuring required information
* Suggested Ordering::          Warning about possible ordering problems
* One-Shot Macros::             Ensuring a macro is called only once