Usage: /usr/bin/autoheader [OPTION]... [TEMPLATE-FILE]

Create a template file of C '#define' statements for 'configure' to
use.  To this end, scan TEMPLATE-FILE, or 'configure.ac' if present,
or else 'configure.in'.

  -h, --help               print this help, then exit
  -V, --version            print version number, then exit
  -v, --verbose            verbosely report processing
  -d, --debug              don't remove temporary files
  -f, --force              consider all files obsolete
  -R, --replace-handwritten
                           overwrite an existing template file that appears
                           not to have been generated by autoheader
  -W, --warnings=CATEGORY  report the warnings falling in CATEGORY
                           (comma-separated list accepted)

Warning categories are:
  cross                  cross compilation issues
  gnu                    GNU coding standards (default in gnu and gnits modes)
  obsolete               obsolete features or constructions (default)
  override               user redefinitions of Automake rules or variables
  portability            portability issues (default in gnu and gnits modes)
  portability-recursive  nested Make variables (default with -Wportability)
  extra-portability      extra portability issues related to obscure tools
  syntax                 dubious syntactic constructs (default)
  unsupported            unsupported or incomplete features (default)

-W also understands:
  all                    turn on all the warnings
  none                   turn off all the warnings
  no-CATEGORY            turn off warnings in CATEGORY
  error                  treat all enabled warnings as errors

Library directories:
  -B, --prepend-include=DIR  prepend directory DIR to search path
  -I, --include=DIR          append directory DIR to search path

Report bugs in the tracker at <https://savannah.gnu.org/projects/autoconf>
or by email to <bug-autoconf@gnu.org>.

The full documentation for Autoconf can be read via 'info autoconf',
or on the Web at <https://www.gnu.org/software/autoconf/manual/>.