DragonFly On-Line Manual Pages

IFNAMES(1)                       User Commands                      IFNAMES(1)

NAME
       ifnames2.71 - Extract CPP conditionals from a set of files

SYNOPSIS
       ifnames2.71 [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: <https://www.gnu.org/software/autoconf/>.
       General help using GNU software: <https://www.gnu.org/gethelp/>.

COPYRIGHT
       Copyright (C) 2021 Free Software Foundation, Inc.  License
       GPLv3+/Autoconf: GNU GPL version 3 or later
       <https://gnu.org/licenses/gpl.html>,
       <https://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
       autoconf2.71(1), automake(1), autoreconf2.71(1), autoupdate2.71(1),
       autoheader2.71(1), autoscan2.71(1), ifnames2.71(1), libtool(1).

       The full documentation for ifnames2.71 is maintained as a Texinfo
       manual.  If the info and ifnames2.71 programs are properly installed at
       your site, the command

              info ifnames2.71

       should give you access to the complete manual.

GNU Autoconf 2.71                January 2021                       IFNAMES(1)