ifnames(1)

NAME

   ifnames - Extract CPP conditionals from a set of files

SYNOPSIS

   ifnames [OPTION]... [FILE]...

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

AUTHOR

   Written by David J. MacKenzie and Paul Eggert.

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/>.

COPYRIGHT

   Copyright       2012   Free   Software   Foundation,   Inc.    License
   GPLv3+/Autoconf:     GNU     GPL      version      3      or      later
   <http://gnu.org/licenses/gpl.html>,
   <http://gnu.org/licenses/exceptions.html>
   This is free software: you are free  to  change  and  redistribute  it.
   There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

   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

          info ifnames

   should give you access to the complete manual.

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Free and Open Source Software