Man1 - ifnames.1

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.

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*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.