ifnames - Extract CPP conditionals from a set of files

Author

       Written by David J. MacKenzie and Paul Eggert.

Copyright

       Copyright  ©  2009  Free  Software  Foundation,  Inc.   License  GPLv2+:  GNU  GPL  version  2  or  later
       <http://gnu.org/licenses/old-licenses/gpl-2.0.html>
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to  the  extent
       permitted by law.

Description

       Scan  all  of  the  C  source  FILES (or the standard input, if none are given) and write to the standard
       output a sorted list of all the identifiers that appear in those files in `#if',  `#elif',  `#ifdef',  or
       `#ifndef'  directives.   Print each identifier on a line, followed by a space-separated list of the files
       in which that identifier occurs.

       -h, --help
              print this help, then exit

       -V, --version
              print version number, then exit

Name

       ifnames - Extract CPP conditionals from a set of files

Reporting Bugs

       Report bugs to <bug-autoconf@gnu.org>.  GNU Autoconf home page:  <http://www.gnu.org/software/autoconf/>.
       General help using GNU software: <http://www.gnu.org/gethelp/>.

autoconf(1),  automake(1),  autoreconf(1),  autoupdate(1),  autoheader(1),  autoscan(1), config.guess(1),
       config.sub(1), ifnames(1), libtool(1).

       The full documentation for ifnames is maintained as a Texinfo manual.  If the info and  ifnames  programs
       are properly installed at your site, the command

              infoifnames

       should give you access to the complete manual.

GNU Autoconf 2.64                                   July 2009                                         IFNAMES(1)