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
<bug−[email protected]>.
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Copyright ©
2021 Free Software Foundation, Inc. License GPLv3+/Autoconf:
GNU GPL version 3 or later
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This is free software: you are free to change and
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permitted by law.
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.