ifnames2.13

IFNAMES(1)                                                          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  pack‐
       age.  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 config‐
       ure needs to check for.  It may help fill in some  gaps  in  a  config‐
       ure.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  identi‐
       fier  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         ben@debian.org> for the Debian GNU/Linux autoconf2.13 package.



                                   Autoconf                         IFNAMES(1)