IFNAMES(S)                                             IFNAMES(S)



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 preprocessor conditionals.  If a
       package has already been set up to have some  portability,
       this  program  can  help you figure out what its configure
       needs to check for.  It may help fill in some  gaps  in  a
       configure.in     generated     by     autoscan2.13    (see
       autoscan2.13(3)).

       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  identifier
       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(3),   autoheader2.13(3),   autoreconf2.13(3),
       autoscan2.13(3), autoupdate2.13(3)

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 man-
       page written  by  Ben  Pfaff  <pfaffben@msu.edu>  for  the
       Debian GNU/Linux autoconf2.13 package.



                             Autoconf                  IFNAMES(S)