ifnames - Man Page

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.

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Report bugs to <bug-autoconf@gnu.org>.
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See Also

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.

Referenced By

autoconf(1), autoheader(1), autom4te(1), autoreconf(1), autoscan(1), autoupdate(1).

January 2021 GNU Autoconf 2.71