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autoconf

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autoconf --version (return code: 0)

autoconf (GNU Autoconf) 2.69
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+/Autoconf: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by David J. MacKenzie and Akim Demaille.

autoconf --help (return code: 0)

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

Generate a configuration script from a TEMPLATE-FILE if given, or
`configure.ac' if present, or else `configure.in'.  Output is sent
to the standard output if TEMPLATE-FILE is given, else into
`configure'.

Operation modes:
  -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
  -o, --output=FILE         save output in FILE (stdout is the default)
  -W, --warnings=CATEGORY   report the warnings falling in CATEGORY [syntax]

Warning categories include:
  `cross'         cross compilation issues
  `obsolete'      obsolete constructs
  `syntax'        dubious syntactic constructs
  `all'           all the warnings
  `no-CATEGORY'   turn off the warnings on CATEGORY
  `none'          turn off all the warnings
  `error'         warnings are error

The environment variables `M4' and `WARNINGS' are honored.

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

Tracing:
  -t, --trace=MACRO[:FORMAT]  report the list of calls to MACRO
  -i, --initialization        also trace Autoconf's initialization process

In tracing mode, no configuration script is created.  FORMAT defaults
to `$f:$l:$n:$%'; see `autom4te --help' for information about FORMAT.

Report bugs to <bug-autoconf@gnu.org>.
GNU Autoconf home page: <http://www.gnu.org/software/autoconf/>.
General help using GNU software: <http://www.gnu.org/gethelp/>.

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