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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-autoconfATgnu.org>.  GNU Autoconf home page: <http://www.gnu.org/software/autoconf/>;.   Gen-
       eral help using GNU software: <http://www.gnu.org/gethelp/>;.

COPYRIGHT
       Copyright   (C)   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 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 2.64                  July 2009                        IFNAMES(1)