Node:Notices, Next:Input, Previous:Initializing configure, Up:Setup
configureThe following macros manage version numbers for configure
scripts.  Using them is optional.
| AC_PREREQ (version) | Macro | 
| Ensure that a recent enough version of Autoconf is being used.  If the
version of Autoconf being used to create configureis earlier
than version, print an error message to the standard error output
and do not createconfigure.  For example:AC_PREREQ(2.53) This macro is the only macro that may be used before  | 
| AC_COPYRIGHT (copyright-notice) | Macro | 
| State that, in addition to the Free Software Foundation's copyright on
the Autoconf macros, parts of your configureare covered by the
copyright-notice.The copyright-notice will show up in both the head of
 | 
| AC_REVISION (revision-info) | Macro | 
| Copy revision stamp revision-info into the configurescript, with any dollar signs or double-quotes removed.  This macro lets
you put a revision stamp fromconfigure.acintoconfigurewithout RCS orcvschanging it when you check inconfigure.  That way, you can determine easily which revision ofconfigure.aca particularconfigurecorresponds to.For example, this line in  AC_REVISION($Revision: 1.30 $) produces this in  #! /bin/sh # From configure.ac Revision: 1.30 |