Provided by: autoconf_2.68-1ubuntu2_all
ifnames - Extract CPP conditionals from a set of files
ifnames [OPTION] ... [FILE] ...
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
Written by David J. MacKenzie and Paul Eggert.
Report bugs to <email@example.com>.
Copyright © 2003 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
autoconf(1), automake(1), autoreconf(1), autoupdate(1), autoheader(1), autoscan(1), config.guess(1), config.sub(1), ifnames(1), libtool(1). The Debian project regards the full documentation for ifnames to be non-free, so it is not included in Debian. Nevertheless, the non-free distribution that accompanies Debian includes the manual in its autoconf-doc package. Otherwise, you may be able to access the Autoconf manual online.