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IFNAMES(1) User Commands IFNAMES(1) NAME ifnames2.73 - Extract CPP conditionals from a set of files SYNOPSIS ifnames2.73 [OPTION]... [FILE]... DESCRIPTION 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', '#ifdef', '#ifndef', '#elif', '#elifdef', or '#elifndef' 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 AUTHOR Written by David J. MacKenzie and Paul Eggert. REPORTING BUGS Report bugs to bug-autoconf@gnu.org, or via Savannah: https://savannah.gnu.org/support/?group=autoconf2.73. COPYRIGHT Copyright (C) 2026 Free Software Foundation, Inc. License GPLv3+/Autoconf: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>, <https://gnu.org/licenses/exceptions.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO autoconf2.73(1), automake(1), autoreconf2.73(1), autoupdate2.73(1), auto- header2.73(1), autoscan2.73(1), ifnames2.73(1), libtool(1). The full documentation for Autoconf is maintained as a Texinfo manual. To read the manual locally, use the command info autoconf2.73 You can also consult the Web version of the manual at https://gnu.org/software/autoconf/manual/. GNU Autoconf 2.73 March 2026 IFNAMES(1)
NAME | SYNOPSIS | DESCRIPTION | AUTHOR | REPORTING BUGS | COPYRIGHT | SEE ALSO
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