IFNAMES(1)						      General Commands Manual							IFNAMES(1)

NAME

       ifnames2.13 - print identifiers that a package uses in C preprocessor conditionals

SYNOPSIS

       ifnames2.13 [ --help | -h ] [ --macrodir=dir | -m dir ] [ --version ]

DESCRIPTION

       ifnames2.13 can help when writing a configure.in for a software package.  It prints the identifiers that the package already uses in C pre-
       processor conditionals.	If a package has already been set up to have some portability, this program can help you figure out what its  con-
       figure needs to check for.  It may help fill in some gaps in a configure.in generated by autoscan2.13 (see autoscan2.13(1)).

       ifnames2.13 scans all of the C source files named on the command line (or the standard input, if none are given) and writes to the standard
       output a sorted list of all the identifiers that appear in those files in #if, #elif, #ifdef, or #ifndef directives.  It prints each  iden-
       tifier on a line, followed by a space-separated list of the files in which that identifier occurs.

       ifnames2.13 accepts the following options:

       --help

       -h     Print a summary of the command line options and exit.

       --macrodir=DIR

       -m DIR Look  for  the  installed  macro files in directory DIR.	You can also set the AC_MACRODIR environment variable to a directory; this
	      option overrides the environment variable.

       --version
	      Print the version number of Autoconf and exit.

SEE ALSO

       autoconf2.13(1), autoheader2.13(1), autoreconf2.13(1), autoscan2.13(1), autoupdate2.13(1)

AUTHORS

       David MacKenzie, with help from Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor, Roland McGrath,	Noah  Friedman,  David	D.
       Zuhn, and many others.  This manpage written by Ben Pfaff <pfaffben@debian.org> for the Debian GNU/Linux autoconf2.13 package.

								     Autoconf								IFNAMES(1)