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, or via Savannah: https://savannah.gnu.org/support/?group=autoconf.

COPYRIGHT

Copyright © 2023 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

autoconf(1), automake(1), autoreconf(1), autoupdate(1), autoheader(1), autoscan(1), config.guess(1), config.sub(1), ifnames(1), libtool(1).

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