autoheader2

       figure.

SYNOPSIS
       autoheader2.13 [  --help  |  -h  ]  [  --localdir=dir  |  -l  dir  ]  [
       --macrodir=dir | -m dir ] [ --version ]

DESCRIPTION
       The  autoheader2.13  program  can  create  a template file of C #define
       statements for configure  to  use.   If  configure.in  invokes  AC_CON-
       FIG_HEADER(FILE),  autoheader2.13  creates  FILE.in;  if  multiple file
       arguments are given, the first one is used.  Otherwise,  autoheader2.13
       creates config.h.in.

       If  you  give  autoheader2.13 an argument, it uses that file instead of
       configure.in and writes the header file to the standard output  instead
       of  to  config.h.in.   If  you give autoheader2.13 an argument of -, it
       reads the standard input instead of configure.in and writes the  header
       file to the standard output.

       autoheader2.13  scans configure.in and figures out which C preprocessor
       symbols it might define.  It copies comments  and  #define  and  #undef
       statements  from  a  file  called  acconfig.h,  which comes with and is
       installed with Autoconf.  It also uses a file called acconfig.h in  the
       current  directory,  if  present.  If you AC_DEFINE any additional sym-
       bols, you must create that file with entries  for  them.   For  symbols
       defined   by   AC_CHECK_HEADERS,  AC_CHECK_FUNCS,  AC_CHECK_SIZEOF,  or
       AC_CHECK_LIB, autoheader2.13 generates comments and  #undef  statements
       itself rather than copying them from a file, since the possible symbols
       are effectively limitless.

       The file that autoheader2.13 creates contains mainly #define and #undef
       statements  and  their accompanying comments.  If ./acconfig.h contains
       the string @TOP@, autoheader2.13 copies the lines before the line  con-
       taining  @TOP@  into the top of the file that it generates.  Similarly,
       if ./acconfig.h contains the string @BOTTOM@, autoheader2.13 copies the
       lines  after  that line to the end of the file it generates.  Either or
       both of those strings may be omitted.

       An alternate way to produce the same effect  is  to  create  the  files
       FILE.top (typically config.h.top) and/or FILE.bot in the current direc-
       tory.  If they exist, autoheader2.13 copies them to the  beginning  and
       end,  respectively,  of  its  output.  Their use is discouraged because
       they have file names that contain two periods, and so can not be stored
       on  MS-DOS;  also, they are two more files to clutter up the directory.
       But if you use the  --localdir=DIR  option  to  use  an  acconfig.h  in
       another  directory,  they  give  you a way to put custom boilerplate in
       each individual config.h.in.

       autoheader2.13 accepts the following options:

       --help

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

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

SEE ALSO
       autoconf2.13(1), autoreconf2.13(1), autoscan2.13(1), autoupdate2.13(1),
       ifnames2.13(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  <pfaff-
       ben@debian.org> for the Debian GNU/Linux autoconf2.13 package.



                                   Autoconf                      AUTOHEADER(1)