1IFNAMES(1) User Commands IFNAMES(1)
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6 ifnames - Extract CPP conditionals from a set of files
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9 ifnames [OPTION]... [FILE]...
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12 Scan all of the C source FILES (or the standard input, if none are
13 given) and write to the standard output a sorted list of all the iden‐
14 tifiers that appear in those files in `#if', `#elif', `#ifdef', or
15 `#ifndef' directives. Print each identifier on a line, followed by a
16 space-separated list of the files in which that identifier occurs.
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18 -h, --help
19 print this help, then exit
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21 -V, --version
22 print version number, then exit
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25 Written by David J. MacKenzie and Paul Eggert.
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28 Report bugs to <bug-autoconf@gnu.org>.
29 GNU Autoconf home page: <http://www.gnu.org/software/autoconf/>.
30 General help using GNU software: <http://www.gnu.org/gethelp/>.
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33 Copyright © 2012 Free Software Foundation, Inc. License GPLv3+/Auto‐
34 conf: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>,
35 <http://gnu.org/licenses/exceptions.html>
36 This is free software: you are free to change and redistribute it.
37 There is NO WARRANTY, to the extent permitted by law.
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40 autoconf(1), automake(1), autoreconf(1), autoupdate(1), autoheader(1),
41 autoscan(1), config.guess(1), config.sub(1), ifnames(1), libtool(1).
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43 The full documentation for ifnames is maintained as a Texinfo manual.
44 If the info and ifnames programs are properly installed at your site,
45 the command
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47 info ifnames
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49 should give you access to the complete manual.
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53GNU Autoconf 2.68b.25-19513 April 2012 IFNAMES(1)