File: autoconf.info, Node: Obsolete Constructs, Next: Using Autotest, Prev: config.status Invocation, Up: Top 18 Obsolete Constructs ********************** Autoconf changes, and throughout the years some constructs have been obsoleted. Most of the changes involve the macros, but in some cases the tools themselves, or even some concepts, are now considered obsolete. You may completely skip this chapter if you are new to Autoconf. Its intention is mainly to help maintainers updating their packages by understanding how to move to more modern constructs. * Menu: * Obsolete config.status Use:: Obsolete convention for ‘config.status’ * acconfig Header:: Additional entries in ‘config.h.in’ * autoupdate Invocation:: Automatic update of ‘configure.ac’ * Obsolete Macros:: Backward compatibility macros * Autoconf 1:: Tips for upgrading your files * Autoconf 2.13:: Some fresher tips