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 © 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.

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.