osx man page for ifnames

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 identi-
       fiers 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>.

COPYRIGHT
       Copyright (C) 2006 Free Software Foundation, Inc.
       This   is   free   software.    You   may   redistribute   copies   of	it   under   the   terms   of	the  GNU  General  Public  License
       <http://www.gnu.org/licenses/gpl.html>.	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),
       glibtool(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.

ifnames 2.61							   November 2006							IFNAMES(1)