IFNAMES(1)                       User Commands                      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'  direc-
       tives.   Print  each identifier on a line, followed by a
       space-separated list of the files in which that  identi-
       fier 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>.

COPYRIGHT
       Copyright  2008 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 redis-
       tribute it.  There is NO WARRANTY, to the extent permit-
       ted by law.

SEE ALSO
       autoconf(1),  automake(1), autoreconf(1), autoupdate(1),
       autoheader(1),   autoscan(1),   config.guess(1),    con-
       fig.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.



GNU Autoconf 2.63               September 2008                      IFNAMES(1)
