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dnl  Autoconf script for GNU Emacs
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dnl To rebuild the `configure' script from this, execute the command
dnl 	autoconf
dnl in the directory containing this script.
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dnl
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dnl  Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001
dnl  Free Software Foundation, Inc.
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dnl
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dnl  This file is part of GNU Emacs.
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dnl
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dnl  GNU Emacs is free software; you can redistribute it and/or modify
dnl  it under the terms of the GNU General Public License as published by
dnl  the Free Software Foundation; either version 2, or (at your option)
dnl  any later version.
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dnl
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dnl  GNU Emacs is distributed in the hope that it will be useful,
dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl  GNU General Public License for more details.
dnl
dnl  You should have received a copy of the GNU General Public License
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dnl  along with GNU Emacs; see the file COPYING.  If not, write to the
dnl  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
dnl  Boston, MA 02111-1307, USA.
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AC_PREREQ(2.51)dnl
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AC_INIT(src/lisp.h)
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AC_CONFIG_HEADER(src/config.h:src/config.in)
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dnl Support for --program-prefix, --program-suffix and
dnl --program-transform-name options
AC_ARG_PROGRAM

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lispdir='${datadir}/emacs/${version}/lisp'
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locallisppath='${datadir}/emacs/${version}/site-lisp:'\
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'${datadir}/emacs/site-lisp:${datadir}/emacs/${version}/leim'
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lisppath='${locallisppath}:${lispdir}'
etcdir='${datadir}/emacs/${version}/etc'
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archlibdir='${libexecdir}/emacs/${version}/${configuration}'
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docdir='${datadir}/emacs/${version}/etc'

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AC_ARG_WITH(gcc,
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[  --without-gcc           don't use GCC to compile Emacs if GCC is found])
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AC_ARG_WITH(pop,
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[  --without-pop           don't support POP mail retrieval with movemail],
[if test "$withval" = yes; then
   AC_DEFINE(MAIL_USE_POP)
else :
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fi],
AC_DEFINE(MAIL_USE_POP))
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AC_ARG_WITH(kerberos,
[  --with-kerberos         support Kerberos-authenticated POP],
[AC_DEFINE(KERBEROS)])
AC_ARG_WITH(kerberos5,
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[  --with-kerberos5        support Kerberos version 5 authenticated POP],
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[if test "${with_kerberos5+set}" = set; then
  if test "${with_kerberos+set}" != set; then
    with_kerberos=yes
    AC_DEFINE(KERBEROS)
  fi
fi
AC_DEFINE(KERBEROS5)])
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AC_ARG_WITH(hesiod,
[  --with-hesiod           support Hesiod to get the POP server host],
[AC_DEFINE(HESIOD)])
dnl This should be the last --with option, because --with-x is
dnl added later on when we find the path of X, and it's best to
dnl keep them together visually.
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AC_ARG_WITH(x-toolkit,
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[  --with-x-toolkit=KIT    use an X toolkit (KIT = yes/lucid/athena/motif/no)],
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[	  case "${withval}" in
	    y | ye | yes )	val=athena ;;
	    n | no )		val=no  ;;
	    l | lu | luc | luci | lucid )	val=lucid ;;
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	    a | at | ath | athe | athen | athena )	val=athena ;;
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	    m | mo | mot | moti | motif )	val=motif ;;
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dnl These don't currently work.
dnl	    o | op | ope | open | open- | open-l | open-lo \
dnl		| open-loo | open-look )	val=open-look ;;
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	    * )
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dnl AC_MSG_ERROR([the \`--with-x-toolkit' option is supposed to have a value
dnl which is \`yes', \`no', \`lucid', \`athena', \`motif' or \`open-look'.])
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AC_MSG_ERROR([\`--with-x-toolkit=$withval' is invalid\;
this option's value should be \`yes', \`no', \`lucid', \`athena', or \`motif'.
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Currently, \`yes', \`athena' and \`lucid' are synonyms.])
	    ;;
	  esac
	  with_x_toolkit=$val
])
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AC_ARG_WITH(xpm,
[  --with-xpm              use -lXpm for displaying XPM images])
AC_ARG_WITH(jpeg,
[  --with-jpeg             use -ljpeg for displaying JPEG images])
AC_ARG_WITH(tiff,
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[  --with-tiff             use -ltiff for displaying TIFF images])
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AC_ARG_WITH(gif,
[  --with-gif              use -lungif for displaying GIF images])
AC_ARG_WITH(png,
[  --with-png              use -lpng for displaying PNG images])
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AC_ARG_WITH(toolkit-scroll-bars,
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[  --without-toolkit-scroll-bars
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                          don't use Motif or Xaw3d scroll bars])
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AC_ARG_WITH(xim,
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[  --without-xim           don't use X11 XIM])
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#### Make srcdir absolute, if it isn't already.  It's important to
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#### avoid running the path through pwd unnecessarily, since pwd can
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#### give you automounter prefixes, which can go away.  We do all this
#### so Emacs can find its files when run uninstalled.
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## Make sure CDPATH doesn't affect cd (in case PWD is relative).
unset CDPATH
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case "${srcdir}" in
  /* ) ;;
  . )
    ## We may be able to use the $PWD environment variable to make this
    ## absolute.  But sometimes PWD is inaccurate.
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    if test ".${PWD}" != "." && test ".`(cd ${PWD} ; sh -c pwd)`" = ".${PWD}"  ;
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    then
      srcdir="$PWD"
    else
      srcdir="`(cd ${srcdir}; pwd)`"
    fi
  ;;
  *  ) srcdir="`(cd ${srcdir}; pwd)`" ;;
esac

#### Check if the source directory already has a configured system in it.
if test `pwd` != `(cd ${srcdir} && pwd)` \
   && test -f "${srcdir}/src/config.h" ; then
  AC_MSG_WARN([The directory tree \`${srcdir}' is being used
   as a build directory right now; it has been configured in its own
   right.  To configure in another directory as well, you MUST
   use GNU make.  If you do not have GNU make, then you must
   now do \`make distclean' in ${srcdir},
   and then run $0 again.])

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changequote(, )dnl
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  extrasub='/^VPATH[	 ]*=/c\
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changequote([, ])dnl
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vpath %.c $(srcdir)\
vpath %.h $(srcdir)\
vpath %.y $(srcdir)\
vpath %.l $(srcdir)\
vpath %.s $(srcdir)\
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vpath %.in $(srcdir)\
vpath %.texi $(srcdir)'
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fi

#### Given the configuration name, set machfile and opsysfile to the
#### names of the m/*.h and s/*.h files we should use.

### Canonicalize the configuration name.

AC_CANONICAL_HOST
canonical=$host
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configuration=${host_alias-$host}
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changequote(, )dnl

### If you add support for a new configuration, add code to this
### switch statement to recognize your configuration name and select
### the appropriate operating system and machine description files.

### You would hope that you could choose an m/*.h file pretty much
### based on the machine portion of the configuration name, and an s-
### file based on the operating system portion.  However, it turns out
### that each m/*.h file is pretty manufacturer-specific - for
### example, apollo.h, hp9000s300.h, mega68k, news.h, and tad68k are
### all 68000 machines; mips.h, pmax.h, and news-risc are all MIPS
### machines.  So we basically have to have a special case for each
### configuration name.
###
### As far as handling version numbers on operating systems is
### concerned, make sure things will fail in a fixable way.  If
### /etc/MACHINES doesn't say anything about version numbers, be
### prepared to handle anything reasonably.  If version numbers
### matter, be sure /etc/MACHINES says something about it.
###
### Eric Raymond says we should accept strings like "sysvr4" to mean
### "System V Release 4"; he writes, "The old convention encouraged
### confusion between `system' and `release' levels'."

machine='' opsys='' unported=no
case "${canonical}" in

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  ## FreeBSD ports
  *-*-freebsd* )
    opsys=freebsd
    case "${canonical}" in
      alpha*-*-freebsd*)	machine=alpha ;;
      i[3456]86-*-freebsd*)	machine=intel386 ;;
    esac
  ;;

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  ## NetBSD ports
  *-*-netbsd* )
    opsys=netbsd
    case "${canonical}" in
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      alpha*-*-netbsd*)	machine=alpha ;;
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      i[3456]86-*-netbsd*) machine=intel386 ;;
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      m68k-*-netbsd*)
			# This is somewhat bogus.
			machine=hp9000s300 ;;
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      powerpc-apple-netbsd*) machine=macppc ;;
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      mips-*-netbsd*)	machine=pmax ;;
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      mipsel-*-netbsd*)	machine=pmax ;;
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      ns32k-*-netbsd*)	machine=ns32000 ;;
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      powerpc-*-netbsd*) machine=macppc ;;
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      sparc*-*-netbsd*)	machine=sparc ;;
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      vax-*-netbsd*)	machine=vax ;;
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      arm-*-netbsd*)	machine=arm ;;
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    esac
  ;;

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  ## OpenBSD ports
  *-*-openbsd* )
    opsys=openbsd
    case "${canonical}" in
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      alpha*-*-openbsd*)	machine=alpha ;;
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      i386-*-openbsd*)	machine=intel386 ;;
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      m68k-*-openbsd*)  machine=hp9000s300 ;;
      mipsel-*-openbsd*) machine=pmax ;;
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      ns32k-*-openbsd*)	machine=ns32000 ;;
      sparc-*-openbsd*)	machine=sparc ;;
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      vax-*-openbsd*)	machine=vax ;;
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    esac
  ;;

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  ## Acorn RISCiX:
  arm-acorn-riscix1.1* )
    machine=acorn opsys=riscix1-1
  ;;
  arm-acorn-riscix1.2* | arm-acorn-riscix )
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    ## This name is riscix12 instead of riscix1.2
    ## to avoid a file name conflict on MSDOS.
    machine=acorn opsys=riscix12
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  ;;

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  ## BSDI ports
  *-*-bsdi* )
    opsys=bsdi
    case "${canonical}" in
      i[345]86-*-bsdi*) machine=intel386 ;;
      sparc-*-bsdi*)  machine=sparc ;;
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      powerpc-*-bsdi*)  machine=macppc ;;
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    esac
    case "${canonical}" in
      *-*-bsd386* | *-*-bsdi1* )	opsys=bsd386 ;;
      *-*-bsdi2.0* )		opsys=bsdos2 ;;
      *-*-bsdi2* )		opsys=bsdos2-1 ;;
      *-*-bsdi3* )		opsys=bsdos3 ;;
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      *-*-bsdi4* )		opsys=bsdos4 ;;
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    esac
  ;;

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  ## Alliant machines
  ## Strictly speaking, we need the version of the alliant operating
  ## system to choose the right machine file, but currently the
  ## configuration name doesn't tell us enough to choose the right
  ## one; we need to give alliants their own operating system name to
  ## do this right.  When someone cares, they can help us.
  fx80-alliant-* )
    machine=alliant4 opsys=bsd4-2
  ;;
  i860-alliant-* )
    machine=alliant-2800 opsys=bsd4-3
  ;;

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  ## Alpha (DEC) machines.
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  alpha*-dec-osf* )
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    machine=alpha opsys=osf1
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    # This is needed to find X11R6.1 libraries for certain tests.
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    NON_GCC_LINK_TEST_OPTIONS=-Wl,-rpath,/usr/X11R6/lib
    GCC_LINK_TEST_OPTIONS=-Wl,-rpath,/usr/X11R6/lib
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    # NON_GNU_CPP is necessary on 5.0 to avoid mangling src/Makefile
    # due to non-traditional preprocessing with the current compiler
    # defaults.  OSF 4 can also have that compiler version, and there
    # seems always to have been a usable /usr/bin/cpp.
    NON_GNU_CPP=/usr/bin/cpp
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    case "${canonical}" in
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    alpha*-dec-osf[5-9]*)
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      opsys=osf5-0 ;;
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    esac
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  ;;

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  alpha*-*-linux-gnu* )
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    machine=alpha opsys=gnu-linux
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  ;;

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  arm*-*-linux-gnu* )
    machine=arm opsys=gnu-linux
  ;;

  ppc-*-linux | \
  powerpc-*-linux* )
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    machine=macppc opsys=gnu-linux
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  ;;

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  ## Altos 3068
  m68*-altos-sysv* )
    machine=altos opsys=usg5-2
  ;;
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  ## Amdahl UTS
  580-amdahl-sysv* )
    machine=amdahl opsys=usg5-2-2
  ;;

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  ## Apollo, Domain/OS
  m68*-apollo-* )
    machine=apollo opsys=bsd4-3
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  ;;

  ## AT&T 3b2, 3b5, 3b15, 3b20
  we32k-att-sysv* )
    machine=att3b opsys=usg5-2-2
  ;;

  ## AT&T 3b1 - The Mighty Unix PC!
  m68*-att-sysv* )
    machine=7300 opsys=usg5-2-2
  ;;

  ## Bull dpx20
  rs6000-bull-bosx* )
    machine=ibmrs6000 opsys=aix3-2
  ;;

  ## Bull dpx2
  m68*-bull-sysv3* )
    machine=dpx2 opsys=usg5-3
  ;;

  ## Bull sps7
  m68*-bull-sysv2* )
    machine=sps7 opsys=usg5-2
  ;;

  ## CCI 5/32, 6/32 -- see "Tahoe".

  ## Celerity
  ## I don't know what configuration name to use for this; config.sub
  ## doesn't seem to know anything about it.  Hey, Celerity users, get
  ## in touch with us!
  celerity-celerity-bsd* )
    machine=celerity opsys=bsd4-2
  ;;

  ## Clipper
  ## What operating systems does this chip run that Emacs has been
  ## tested on?
  clipper-* )
    machine=clipper
    ## We'll use the catch-all code at the bottom to guess the
    ## operating system.
  ;;

  ## Convex
  *-convex-bsd* | *-convex-convexos* )
    machine=convex opsys=bsd4-3
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    ## Prevents spurious white space in makefiles - d.m.cooke@larc.nasa.gov
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    NON_GNU_CPP="cc -E -P"
  ;;

  ## Cubix QBx/386
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  i[3456]86-cubix-sysv* )
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    machine=intel386 opsys=usg5-3
  ;;

  ## Cydra 5
  cydra*-cydrome-sysv* )
    machine=cydra5 opsys=usg5-3
  ;;

  ## Data General AViiON Machines
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  ## DG changed naming conventions with the release of 5.4.4.10, they
  ## dropped the initial 5.4 but left the intervening R.  Because of the
  ## R this shouldn't conflict with older versions of the OS (which I
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  ## think were named like dgux4.*). In addition, DG new AViiONs series
  ## uses either Motorola M88k or Intel Pentium CPUs.
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  m88k-dg-dguxR4.* | m88k-dg-dgux4* )
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    machine=aviion opsys=dgux4
  ;;
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  m88k-dg-dgux5.4R3* | m88k-dg-dgux5.4.3* )
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    ## This name is dgux5-4-3 instead of dgux5-4r3
    ## to avoid a file name conflict on MSDOS.
    machine=aviion opsys=dgux5-4-3
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  ;;
  m88k-dg-dgux5.4R2* | m88k-dg-dgux5.4.2* )
    machine=aviion opsys=dgux5-4r2
  ;;
  m88k-dg-dgux* )
    machine=aviion opsys=dgux
  ;;

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  ## Data General AViiON Intel (x86) Machines
  ## Exists from 5.4.3 (current i586-dg-dguxR4.11)
  ## Ehud Karni, 1998-may-30, ehud@unix.simonwiesel.co.il
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  i[345]86-dg-dguxR4* )
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    machine=aviion-intel opsys=dgux4
  ;;

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  ## DECstations
  mips-dec-ultrix[0-3].* | mips-dec-ultrix4.0* | mips-dec-bsd4.2* )
    machine=pmax opsys=bsd4-2
  ;;
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  mips-dec-ultrix4.[12]* | mips-dec-bsd* )
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    machine=pmax opsys=bsd4-3
  ;;
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  mips-dec-ultrix* )
    machine=pmax opsys=ultrix4-3
  ;;
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  mips-dec-osf* )
    machine=pmax opsys=osf1
  ;;
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  mips-dec-mach_bsd4.3* )
    machine=pmax opsys=mach-bsd4-3
  ;;
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  ## Motorola Delta machines
  m68k-motorola-sysv* | m68000-motorola-sysv* )
    machine=delta opsys=usg5-3
    if test -z "`type gnucc | grep 'not found'`"
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    then
      if test -s /etc/167config
      then CC="gnucc -m68040"
      else CC="gnucc -m68881"
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      fi
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    else
      if test -z "`type gcc | grep 'not found'`"
      then CC=gcc
      else CC=cc
      fi
    fi
  ;;
  m88k-motorola-sysv4* )
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    # jbotte@bnr.ca says that UNIX_System_V <hostName> 4.0 R40V4.3 m88k mc88110
    # needs POSIX_SIGNALS and therefore needs usg5-4-2.
    # I hope there are not other 4.0 versions for this machine
    # which really need usg5-4 instead.
    machine=delta88k opsys=usg5-4-2
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  ;;
  m88k-motorola-sysv* | m88k-motorola-m88kbcs* )
    machine=delta88k opsys=usg5-3
  ;;

  ## Dual machines
  m68*-dual-sysv* )
    machine=dual opsys=usg5-2
  ;;
  m68*-dual-uniplus* )
    machine=dual opsys=unipl5-2
  ;;

  ## Elxsi 6400
  elxsi-elxsi-sysv* )
    machine=elxsi opsys=usg5-2
  ;;

  ## Encore machines
  ns16k-encore-bsd* )
    machine=ns16000 opsys=umax
  ;;

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  ## The GEC 63 - apparently, this port isn't really finished yet.
  #  I'm sure we finished off the last of the machines, though.  -- fx
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  ## Gould Power Node and NP1
  pn-gould-bsd4.2* )
    machine=gould opsys=bsd4-2
  ;;
  pn-gould-bsd4.3* )
    machine=gould opsys=bsd4-3
  ;;
  np1-gould-bsd* )
    machine=gould-np1 opsys=bsd4-3
  ;;

  ## Harris Night Hawk machines running CX/UX (a 5000 looks just like a 4000
  ## as far as Emacs is concerned).
  m88k-harris-cxux* )
    # Build needs to be different on 7.0 and later releases
    case "`uname -r`" in
       [56].[0-9] ) machine=nh4000 opsys=cxux ;;
       [7].[0-9] ) machine=nh4000 opsys=cxux7 ;;
    esac
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    NON_GNU_CPP="/lib/cpp"
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  ;;
  ## Harris ecx or gcx running CX/UX (Series 1200, Series 3000)
  m68k-harris-cxux* )
    machine=nh3000 opsys=cxux
  ;;
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  ## Harris power pc NightHawk running Power UNIX (Series 6000)
  powerpc-harris-powerunix )
    machine=nh6000 opsys=powerunix
    NON_GNU_CPP="cc -Xo -E -P"
  ;;
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  ## SR2001/SR2201 running HI-UX/MPP
  hppa1.1-hitachi-hiuxmpp* )
    machine=sr2k opsys=hiuxmpp
  ;;
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  hppa1.1-hitachi-hiuxwe2* )
    machine=sr2k opsys=hiuxwe2
  ;;
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  ## Honeywell XPS100
  xps*-honeywell-sysv* )
    machine=xps100 opsys=usg5-2
  ;;

  ## HP 9000 series 200 or 300
  m68*-hp-bsd* )
    machine=hp9000s300 opsys=bsd4-3
  ;;
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  ## HP/UX 7, 8, 9, and 10 are supported on these machines.
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  m68*-hp-hpux* )
    case "`uname -r`" in
      ## Someone's system reports A.B8.05 for this.
      ## I wonder what other possibilities there are.
      *.B8.* ) machine=hp9000s300 opsys=hpux8 ;;
      *.08.* ) machine=hp9000s300 opsys=hpux8 ;;
      *.09.* ) machine=hp9000s300 opsys=hpux9 ;;
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      *.1[0-9].* ) machine=hp9000s300 opsys=hpux9shr ;;
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      *) machine=hp9000s300 opsys=hpux ;;
    esac
  ;;

  ## HP 9000 series 700 and 800, running HP/UX
  hppa*-hp-hpux7* )
    machine=hp800 opsys=hpux
  ;;
  hppa*-hp-hpux8* )
    machine=hp800 opsys=hpux8
  ;;
  hppa*-hp-hpux9shr* )
    machine=hp800 opsys=hpux9shr
  ;;
  hppa*-hp-hpux9* )
    machine=hp800 opsys=hpux9
  ;;
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  hppa*-hp-hpux10* )
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    machine=hp800 opsys=hpux10
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  ;;
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  hppa*-hp-hpux1[1-9]* )
    machine=hp800 opsys=hpux11
  ;;
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  ## HP 9000 series 700 and 800, running HP/UX
  hppa*-hp-hpux* )
    ## Cross-compilation?  Nah!
    case "`uname -r`" in
      ## Someone's system reports A.B8.05 for this.
      ## I wonder what other possibilities there are.
      *.B8.* ) machine=hp800 opsys=hpux8 ;;
      *.08.* ) machine=hp800 opsys=hpux8 ;;
      *.09.* ) machine=hp800 opsys=hpux9 ;;
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      *) machine=hp800 opsys=hpux10 ;;
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    esac
  ;;
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  hppa*-*-nextstep* )
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    machine=hp800 opsys=nextstep
  ;;
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  ## Orion machines
  orion-orion-bsd* )
    machine=orion opsys=bsd4-2
  ;;
  clipper-orion-bsd* )
    machine=orion105 opsys=bsd4-2
  ;;

  ## IBM machines
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  i[3456]86-ibm-aix1.1* )
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    machine=ibmps2-aix opsys=usg5-2-2
  ;;
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  i[3456]86-ibm-aix1.[23]* | i[3456]86-ibm-aix* )
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    machine=ibmps2-aix opsys=usg5-3
  ;;
  i370-ibm-aix*)
    machine=ibm370aix opsys=usg5-3
  ;;
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  s390-*-linux-gnu)
    machine=ibms390 opsys=gnu-linux
  ;;
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  rs6000-ibm-aix3.1* | powerpc-ibm-aix3.1*  )
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    machine=ibmrs6000 opsys=aix3-1
  ;;
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  rs6000-ibm-aix3.2.5 | powerpc-ibm-aix3.2.5 )
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    machine=ibmrs6000 opsys=aix3-2-5
  ;;
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  rs6000-ibm-aix4.1* | powerpc-ibm-aix4.1*  )
    machine=ibmrs6000 opsys=aix4-1
  ;;
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  rs6000-ibm-aix4.2* | powerpc-ibm-aix4.2*  )
    machine=ibmrs6000 opsys=aix4-2
  ;;
  rs6000-ibm-aix4.0* | powerpc-ibm-aix4.0*  )
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    machine=ibmrs6000 opsys=aix4
  ;;
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  rs6000-ibm-aix4* | powerpc-ibm-aix4*  )
    machine=ibmrs6000 opsys=aix4-1
  ;;
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  rs6000-ibm-aix* | powerpc-ibm-aix* )
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    machine=ibmrs6000 opsys=aix3-2
  ;;
  romp-ibm-bsd4.3* )
    machine=ibmrt opsys=bsd4-3
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  ;;
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  romp-ibm-bsd4.2* )
    machine=ibmrt opsys=bsd4-2
  ;;
  romp-ibm-aos4.3* )
    machine=ibmrt opsys=bsd4-3
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  ;;
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  romp-ibm-aos4.2* )
    machine=ibmrt opsys=bsd4-2
  ;;
  romp-ibm-aos* )
    machine=ibmrt opsys=bsd4-3
  ;;
  romp-ibm-bsd* )
    machine=ibmrt opsys=bsd4-3
  ;;
  romp-ibm-aix* )
    machine=ibmrt-aix opsys=usg5-2-2
  ;;

  ## Integrated Solutions `Optimum V'
  m68*-isi-bsd4.2* )
    machine=isi-ov opsys=bsd4-2
  ;;
  m68*-isi-bsd4.3* )
    machine=isi-ov opsys=bsd4-3
  ;;

  ## Intel 386 machines where we do care about the manufacturer
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  i[3456]86-intsys-sysv* )
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    machine=is386 opsys=usg5-2-2
  ;;

  ## Prime EXL
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  i[3456]86-prime-sysv* )
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    machine=i386 opsys=usg5-3
  ;;

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  ## Sequent Symmetry running Dynix
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  i[3456]86-sequent-bsd* )
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    machine=symmetry opsys=bsd4-3
  ;;

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  ## Sequent Symmetry running ptx 4, which is a modified SVR4.
  i[3456]86-sequent-ptx4* | i[3456]86-sequent-sysv4* )
    machine=sequent-ptx opsys=ptx4
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    NON_GNU_CPP=/lib/cpp
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  ;;

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  ## Sequent Symmetry running DYNIX/ptx
  ## Use the old cpp rather than the newer ANSI one.
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  i[3456]86-sequent-ptx* )
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    machine=sequent-ptx opsys=ptx
    NON_GNU_CPP="/lib/cpp"
  ;;

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  ## ncr machine running svr4.3.
  i[3456]86-ncr-sysv4.3 )
    machine=ncr386 opsys=usg5-4-3
  ;;

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  ## Unspecified sysv on an ncr machine defaults to svr4.2.
  ## (Plain usg5-4 doesn't turn on POSIX signals, which we need.)
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  i[3456]86-ncr-sysv* )
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    machine=ncr386 opsys=usg5-4-2
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  ;;

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  ## Intel Paragon OSF/1
  i860-intel-osf1* )
    machine=paragon opsys=osf1 NON_GNU_CPP=/usr/mach/lib/cpp
  ;;

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  ## Intel 860
  i860-*-sysv4* )
    machine=i860 opsys=usg5-4
    NON_GNU_CC="/bin/cc" # Ie, not the one in /usr/ucb/cc.
    NON_GNU_CPP="/usr/ccs/lib/cpp" # cc -E tokenizes macro expansion.
  ;;

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  ## Macintosh PowerPC
  powerpc*-*-linux-gnu* )
    machine=macppc opsys=gnu-linux
  ;;

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  ## Masscomp machines
  m68*-masscomp-rtu* )
    machine=masscomp opsys=rtu
  ;;

  ## Megatest machines
  m68*-megatest-bsd* )
    machine=mega68 opsys=bsd4-2
  ;;

  ## Workstations sold by MIPS
  ## This is not necessarily all workstations using the MIPS processor -
  ## Irises are produced by SGI, and DECstations by DEC.

  ## etc/MACHINES lists mips.h and mips4.h as possible machine files,
  ## and usg5-2-2 and bsd4-3 as possible OS files.  The only guidance
  ## it gives for choosing between the alternatives seems to be "Use
  ## -machine=mips4 for RISCOS version 4; use -opsystem=bsd4-3 with
  ## the BSD world."  I'll assume that these are instructions for
  ## handling two odd situations, and that every other situation
  ## should use mips.h and usg5-2-2, they being listed first.
  mips-mips-usg* )
    machine=mips4
    ## Fall through to the general code at the bottom to decide on the OS.
  ;;
  mips-mips-riscos4* )
    machine=mips4 opsys=bsd4-3
    NON_GNU_CC="cc -systype bsd43"
    NON_GNU_CPP="cc -systype bsd43 -E"
  ;;
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  mips-mips-riscos5* )
    machine=mips4 opsys=riscos5
    NON_GNU_CC="cc -systype bsd43"
    NON_GNU_CPP="cc -systype bsd43 -E"
  ;;
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  mips-mips-bsd* )
    machine=mips opsys=bsd4-3
  ;;
  mips-mips-* )
    machine=mips opsys=usg5-2-2
  ;;

  ## NeXT
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  m68*-next-* | m68k-*-nextstep* )
    machine=m68k opsys=nextstep
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  ;;

  ## The complete machine from National Semiconductor
  ns32k-ns-genix* )
    machine=ns32000 opsys=usg5-2
  ;;

  ## NCR machines
  m68*-ncr-sysv2* | m68*-ncr-sysvr2* )
    machine=tower32 opsys=usg5-2-2
  ;;
  m68*-ncr-sysv3* | m68*-ncr-sysvr3* )
    machine=tower32v3 opsys=usg5-3
  ;;

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  ## NEC EWS4800
  mips-nec-sysv4*)
  machine=ews4800 opsys=ux4800
  ;;

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  ## Nixdorf Targon 31
  m68*-nixdorf-sysv* )
    machine=targon31 opsys=usg5-2-2
  ;;

  ## Nu (TI or LMI)
  m68*-nu-sysv* )
    machine=nu opsys=usg5-2
  ;;

  ## Plexus
  m68*-plexus-sysv* )
    machine=plexus opsys=usg5-2
  ;;

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  ## PowerPC reference platform
  powerpcle-*-solaris2* )
    machine=prep
    opsys=sol2-5
  ;;

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  ## Pyramid machines
  ## I don't really have any idea what sort of processor the Pyramid has,
  ## so I'm assuming it is its own architecture.
  pyramid-pyramid-bsd* )
    machine=pyramid opsys=bsd4-2
  ;;

  ## Sequent Balance
  ns32k-sequent-bsd4.2* )
    machine=sequent opsys=bsd4-2
  ;;
  ns32k-sequent-bsd4.3* )
    machine=sequent opsys=bsd4-3
  ;;

  ## Siemens Nixdorf
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  mips-siemens-sysv* | mips-sni-sysv*)
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    machine=mips-siemens opsys=usg5-4
    NON_GNU_CC=/usr/ccs/bin/cc
    NON_GNU_CPP=/usr/ccs/lib/cpp
  ;;

  ## Silicon Graphics machines
  ## Iris 2500 and Iris 2500 Turbo (aka the Iris 3030)
  m68*-sgi-iris3.5* )
    machine=irist opsys=iris3-5
  ;;
  m68*-sgi-iris3.6* | m68*-sgi-iris*)
    machine=irist opsys=iris3-6
  ;;
  ## Iris 4D
  mips-sgi-irix3* )
    machine=iris4d opsys=irix3-3
  ;;
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  mips-sgi-irix4* )
    machine=iris4d opsys=irix4-0
  ;;
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  mips-sgi-irix6.5 )
    machine=iris4d opsys=irix6-5
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    # Without defining _LANGUAGE_C, things get masked out in the headers
    # so that, for instance, grepping for `free' in stdlib.h fails and
    # AC_HEADER_STD_C fails.   (MIPSPro 7.2.1.2m compilers, Irix 6.5.3m).
    NON_GNU_CPP="/lib/cpp -D_LANGUAGE_C"
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    NON_GCC_TEST_OPTIONS="-D_LANGUAGE_C"
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  ;;
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  mips-sgi-irix6* )
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    machine=iris4d opsys=irix6-0
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    # It's not clear whether -D_LANGUAGE_C is necessary as it is for 6.5,
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    # but presumably it does no harm.
    NON_GNU_CPP="/lib/cpp -D_LANGUAGE_C"
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    NON_GCC_TEST_OPTIONS=-32
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  ;;
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  mips-sgi-irix5.[01]* )
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    machine=iris4d opsys=irix5-0
  ;;
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  mips-sgi-irix5* | mips-sgi-irix* )
    machine=iris4d opsys=irix5-2
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  ;;

  ## SONY machines
  m68*-sony-bsd4.2* )
    machine=news opsys=bsd4-2
  ;;
  m68*-sony-bsd4.3* )
    machine=news opsys=bsd4-3
  ;;
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  m68*-sony-newsos3* | m68*-sony-news3*)
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    machine=news opsys=bsd4-3
  ;;
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  mips-sony-bsd* | mips-sony-newsos4* | mips-sony-news4*)
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    machine=news-risc opsys=bsd4-3
  ;;
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  mips-sony-newsos6* )
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    machine=news-r6 opsys=newsos6
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  ;;
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  mips-sony-news* )
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    machine=news-risc opsys=newsos5
  ;;

  ## Stride
  m68*-stride-sysv* )
    machine=stride opsys=usg5-2
  ;;

  ## Suns
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  sparc-*-linux-gnu* | sparc64-*-linux-gnu* )
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    machine=sparc opsys=gnu-linux
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  ;;

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  *-auspex-sunos* | *-sun-sunos* | *-sun-bsd* | *-sun-solaris* \
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    | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* | powerpc*-*-solaris2* \
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    | rs6000-*-solaris2*)
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    case "${canonical}" in
      m68*-sunos1* )	machine=sun1 ;;
      m68*-sunos2* )	machine=sun2 ;;
      m68* )		machine=sun3 ;;
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      i[3456]86-sun-sunos[34]* )	machine=sun386 ;;
      i[3456]86-*-* )     machine=intel386 ;;
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      powerpcle* )      machine=powerpcle ;;
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      powerpc* | rs6000* )  machine=ibmrs6000 ;;
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      sparc* )		machine=sparc ;;
      * )		unported=yes ;;
    esac
    case "${canonical}" in
      ## The Sun386 didn't get past 4.0.
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      i[3456]86-*-sunos4	  ) opsys=sunos4-0 ;;
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      *-sunos4.0*	  ) opsys=sunos4-0 ;;
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      *-sunos4.1.[3-9]*noshare )
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		## This name is sunos413 instead of sunos4-1-3
		## to avoid a file name conflict on MSDOS.
		opsys=sunos413
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		NON_GNU_CPP=/usr/lib/cpp
		NON_GCC_TEST_OPTIONS=-Bstatic
		GCC_TEST_OPTIONS=-static
		;;
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      *-sunos4.1.[3-9]* | *-sunos4shr*)
		opsys=sunos4shr
		NON_GNU_CPP=/usr/lib/cpp
		;;
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      *-sunos4* | *-sunos )
		opsys=sunos4-1
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		NON_GCC_TEST_OPTIONS=-Bstatic
		GCC_TEST_OPTIONS=-static
		;;
      *-sunos5.3* | *-solaris2.3* )
		opsys=sol2-3
		NON_GNU_CPP=/usr/ccs/lib/cpp
		;;
      *-sunos5.4* | *-solaris2.4* )
		opsys=sol2-4
		NON_GNU_CPP=/usr/ccs/lib/cpp
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		RANLIB="ar -ts"
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		;;
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      *-sunos5.5* | *-solaris2.5* )
		opsys=sol2-5
		NON_GNU_CPP=/usr/ccs/lib/cpp
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		RANLIB="ar -ts"
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		;;
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      *-sunos5* | *-solaris* )
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		opsys=sol2-5
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		NON_GNU_CPP=/usr/ccs/lib/cpp
		;;
      *			  ) opsys=bsd4-2   ;;
    esac
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    ## Watch out for a compiler that we know will not work.
    case "${canonical}" in
     *-solaris* | *-sunos5* )
		if [ "x$CC" = x/usr/ucb/cc ]; then
		  ## /usr/ucb/cc doesn't work;
		  ## we should find some other compiler that does work.
		  unset CC
		fi
		;;
      *) ;;
    esac
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  ;;
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  sparc-*-nextstep* )
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    machine=sparc opsys=nextstep
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  ;;
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  ## Tadpole 68k
  m68*-tadpole-sysv* )
    machine=tad68k opsys=usg5-3
  ;;

  ## Tahoe machines
  tahoe-tahoe-bsd4.2* )
    machine=tahoe opsys=bsd4-2
  ;;
  tahoe-tahoe-bsd4.3* )
    machine=tahoe opsys=bsd4-3
  ;;

  ## Tandem Integrity S2
  mips-tandem-sysv* )
    machine=tandem-s2 opsys=usg5-3
  ;;

  ## Tektronix XD88
  m88k-tektronix-sysv3* )
  machine=tekxd88 opsys=usg5-3
  ;;

  ## Tektronix 16000 box (6130?)
  ns16k-tektronix-bsd* )
    machine=ns16000 opsys=bsd4-2
  ;;
  ## Tektronix 4300
  ## src/m/tek4300.h hints that this is a m68k machine.
  m68*-tektronix-bsd* )
    machine=tek4300 opsys=bsd4-3
  ;;

  ## Titan P2 or P3
  ## We seem to have lost the machine-description file titan.h!
  titan-titan-sysv* )
    machine=titan opsys=usg5-3
  ;;
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  ## Ustation E30 (SS5E)
  m68*-unisys-uniplus* )
    machine=ustation opsystem=unipl5-2
  ;;

  ## Vaxen.
  vax-dec-* )
    machine=vax
    case "${canonical}" in
      *-bsd4.1* ) 					opsys=bsd4-1 ;;
      *-bsd4.2* | *-ultrix[0-3].* | *-ultrix4.0* )	opsys=bsd4-2 ;;
      *-bsd4.3* | *-ultrix* ) 				opsys=bsd4-3 ;;
      *-sysv[01]* | *-sysvr[01]* ) 			opsys=usg5-0 ;;
      *-sysv2* | *-sysvr2* )				opsys=usg5-2 ;;
      *-vms* ) 						opsys=vms ;;
      * ) 						unported=yes
    esac
  ;;

  ## Whitechapel MG1
  ns16k-whitechapel-* )
    machine=mg1
    ## We don't know what sort of OS runs on these; we'll let the
    ## operating system guessing code below try.
  ;;

  ## Wicat
  m68*-wicat-sysv* )
    machine=wicat opsys=usg5-2
  ;;

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  ## IA-64
  ia64*-*-linux* )
    machine=ia64 opsys=gnu-linux
  ;;

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  ## Intel 386 machines where we don't care about the manufacturer
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  i[3456]86-*-* )
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    machine=intel386
    case "${canonical}" in
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      *-lynxos* )               opsys=lynxos ;;
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      *-isc1.* | *-isc2.[01]* )	opsys=386-ix ;;
      *-isc2.2* )		opsys=isc2-2 ;;
      *-isc4.0* )		opsys=isc4-0 ;;
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      *-isc4.* )		opsys=isc4-1
				GCC_TEST_OPTIONS=-posix
				NON_GCC_TEST_OPTIONS=-Xp
				;;
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      *-isc* )			opsys=isc3-0 ;;
      *-esix5* )		opsys=esix5r4; NON_GNU_CPP=/usr/lib/cpp ;;
      *-esix* )			opsys=esix ;;
      *-xenix* )		opsys=xenix ;;
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      *-linux-gnu* )		opsys=gnu-linux ;;
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      *-sco3.2v4* )		opsys=sco4 ; NON_GNU_CPP=/lib/cpp  ;;
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      *-sco3.2v5* )		opsys=sco5 
				NON_GNU_CPP=/lib/cpp
				# Prevent -belf from being passed to $CPP.
				# /lib/cpp does not accept it.
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				OVERRIDE_CPPFLAGS=" "
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				;;
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      *-sysv4.2uw* )	  	opsys=unixware; NON_GNU_CPP=/lib/cpp ;;
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      *-386bsd* )	        opsys=386bsd ;;
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      *-nextstep* )             opsys=nextstep ;;
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      ## Otherwise, we'll fall through to the generic opsys code at the bottom.
    esac
  ;;

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  ## m68k Linux-based GNU system
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  m68k-*-linux-gnu* )
    machine=m68k opsys=gnu-linux
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  ;;

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  ## Mips Linux-based GNU system
  mips-*-linux-gnu* )
    machine=mips opsys=gnu-linux
  ;;

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  ## UXP/DS
  sparc-fujitsu-sysv4* )
    machine=sparc opsys=uxpds
    NON_GNU_CPP=/usr/ccs/lib/cpp
    RANLIB="ar -ts"
  ;;

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  ## UXP/V
  f301-fujitsu-uxpv4.1)
    machine=f301 opsys=uxpv
  ;;

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  * )
    unported=yes
  ;;
esac

### If the code above didn't choose an operating system, just choose
### an operating system based on the configuration name.  You really
### only want to use this when you have no idea what the right
### operating system is; if you know what operating systems a machine
### runs, it's cleaner to make it explicit in the case statement
### above.
if test x"${opsys}" = x; then
  case "${canonical}" in
    *-gnu* )				opsys=gnu ;;
    *-bsd4.[01] )			opsys=bsd4-1 ;;
    *-bsd4.2 )				opsys=bsd4-2 ;;
    *-bsd4.3 )				opsys=bsd4-3 ;;
    *-sysv0 | *-sysvr0 )		opsys=usg5-0 ;;
    *-sysv2 | *-sysvr2 )		opsys=usg5-2 ;;
    *-sysv2.2 | *-sysvr2.2 )		opsys=usg5-2-2 ;;
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    *-sysv3* | *-sysvr3* )		opsys=usg5-3 ;;
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    *-sysv4.2uw* )			opsys=unixware ;;
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    *-sysv4.1* | *-sysvr4.1* )
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	NON_GNU_CPP=/usr/lib/cpp
	opsys=usg5-4 ;;
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    *-sysv4.[2-9]* | *-sysvr4.[2-9]* )
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	if [ x$NON_GNU_CPP = x ]; then
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	  if [ -f /usr/ccs/lib/cpp ]; then
	    NON_GNU_CPP=/usr/ccs/lib/cpp
	  else
	    NON_GNU_CPP=/lib/cpp
	  fi
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	fi
	opsys=usg5-4-2 ;;
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    *-sysv4* | *-sysvr4* )		opsys=usg5-4 ;;
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    * )
      unported=yes
    ;;
  esac
fi

changequote([, ])dnl

if test $unported = yes; then
  AC_MSG_ERROR([Emacs hasn't been ported to \`${canonical}' systems.
Check \`etc/MACHINES' for recognized configuration names.])
fi

machfile="m/${machine}.h"
opsysfile="s/${opsys}.h"


#### Choose a compiler.
test -n "$CC" && cc_specified=yes

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# Save the value of CFLAGS that the user specified.
SPECIFIED_CFLAGS="$CFLAGS"

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case ${with_gcc} in
  "yes" ) CC="gcc" GCC=yes ;;
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  "no"  ) : ${CC=cc} ;;
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  * )
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esac
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AC_PROG_CC
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# On Suns, sometimes $CPP names a directory.
if test -n "$CPP" && test -d "$CPP"; then
  CPP=
fi

#### Some systems specify a CPP to use unless we are using GCC.
#### Now that we know whether we are using GCC, we can decide whether
#### to use that one.
if test "x$NON_GNU_CPP" != x && test x$GCC != xyes && test "x$CPP" = x
then
  CPP="$NON_GNU_CPP"
fi

#### Some systems specify a CC to use unless we are using GCC.
#### Now that we know whether we are using GCC, we can decide whether
#### to use that one.
if test "x$NON_GNU_CC" != x && test x$GCC != xyes &&
  test x$cc_specified != xyes
then
  CC="$NON_GNU_CC"
fi

if test x$GCC = xyes && test "x$GCC_TEST_OPTIONS" != x
then
  CC="$CC $GCC_TEST_OPTIONS"
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fi
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if test x$GCC = x && test "x$NON_GCC_TEST_OPTIONS" != x
then
  CC="$CC $NON_GCC_TEST_OPTIONS"
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fi
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if test x$GCC = xyes && test "x$GCC_LINK_TEST_OPTIONS" != x
then
  ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
fi

if test x$GCC = x && test "x$NON_GCC_LINK_TEST_OPTIONS" != x
then
  ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
fi

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#### Some other nice autoconf tests.  If you add a test here which
#### should make an entry in src/config.h, don't forget to add an
#### #undef clause to src/config.h.in for autoconf to modify.

dnl checks for programs
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AC_PROG_LN_S
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AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_YACC
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if test "x$RANLIB" = x; then
  AC_PROG_RANLIB
fi
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dnl checks for Unix variants
AC_AIX

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#### Extract some information from the operating system and machine files.

AC_CHECKING([the machine- and system-dependent files to find out
 - which libraries the lib-src programs will want, and
 - whether the GNU malloc routines are usable])

### First figure out CFLAGS (which we use for running the compiler here)
### and REAL_CFLAGS (which we use for real compilation).
### The two are the same except on a few systems, where they are made
### different to work around various lossages.  For example,
### GCC 2.5 on GNU/Linux needs them to be different because it treats -g
### as implying static linking.

### If the CFLAGS env var is specified, we use that value
### instead of the default.

### It's not important that this name contain the PID; you can't run
### two configures in the same directory and have anything work
### anyway.
tempcname="conftest.c"

echo '
#include "'${srcdir}'/src/'${opsysfile}'"
#include "'${srcdir}'/src/'${machfile}'"
#ifndef LIBS_MACHINE
#define LIBS_MACHINE
#endif
#ifndef LIBS_SYSTEM
#define LIBS_SYSTEM
#endif
#ifndef C_SWITCH_SYSTEM
#define C_SWITCH_SYSTEM
#endif
#ifndef C_SWITCH_MACHINE
#define C_SWITCH_MACHINE
#endif
configure___ libsrc_libs=LIBS_MACHINE LIBS_SYSTEM
configure___ c_switch_system=C_SWITCH_SYSTEM
configure___ c_switch_machine=C_SWITCH_MACHINE

#ifndef LIB_X11_LIB
#define LIB_X11_LIB -lX11
#endif

#ifndef LIBX11_MACHINE
#define LIBX11_MACHINE
#endif

#ifndef LIBX11_SYSTEM
#define LIBX11_SYSTEM
#endif
configure___ LIBX=LIB_X11_LIB LIBX11_MACHINE LIBX11_SYSTEM

#ifdef UNEXEC
configure___ unexec=UNEXEC
#else
configure___ unexec=unexec.o
#endif

#ifdef SYSTEM_MALLOC
configure___ system_malloc=yes
#else
configure___ system_malloc=no
#endif

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#ifdef USE_MMAP_FOR_BUFFERS
configure___ use_mmap_for_buffers=yes
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#else
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configure___ use_mmap_for_buffers=no
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#endif

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#ifndef C_DEBUG_SWITCH
#define C_DEBUG_SWITCH -g
#endif

#ifndef C_OPTIMIZE_SWITCH
#ifdef __GNUC__
#define C_OPTIMIZE_SWITCH -O2
#else
#define C_OPTIMIZE_SWITCH -O
#endif
#endif

#ifndef LD_SWITCH_MACHINE
#define LD_SWITCH_MACHINE
#endif

#ifndef LD_SWITCH_SYSTEM
#define LD_SWITCH_SYSTEM
#endif

#ifndef LD_SWITCH_X_SITE_AUX
#define LD_SWITCH_X_SITE_AUX
#endif  

configure___ ld_switch_system=LD_SWITCH_SYSTEM
configure___ ld_switch_machine=LD_SWITCH_MACHINE

#ifdef THIS_IS_CONFIGURE

/* Get the CFLAGS for tests in configure.  */
#ifdef __GNUC__
configure___ CFLAGS=C_DEBUG_SWITCH C_OPTIMIZE_SWITCH '${SPECIFIED_CFLAGS}'
#else
configure___ CFLAGS=C_DEBUG_SWITCH '${SPECIFIED_CFLAGS}'
#endif

#else /* not THIS_IS_CONFIGURE */

/* Get the CFLAGS for real compilation.  */
#ifdef __GNUC__
configure___ REAL_CFLAGS=C_DEBUG_SWITCH C_OPTIMIZE_SWITCH '${SPECIFIED_CFLAGS}'
#else
configure___ REAL_CFLAGS=C_DEBUG_SWITCH '${SPECIFIED_CFLAGS}'
#endif

#endif /* not THIS_IS_CONFIGURE */
' > ${tempcname}

# The value of CPP is a quoted variable reference, so we need to do this
# to get its actual value...
CPP=`eval "echo $CPP"`
changequote(, )dnl
eval `${CPP} -Isrc ${tempcname} \
       | sed -n -e 's/^configure___ \([^=]*=\)\(.*\)$/\1"\2"/p'`
if test "x$SPECIFIED_CFLAGS" = x; then
  eval `${CPP} -Isrc -DTHIS_IS_CONFIGURE ${tempcname} \
	 | sed -n -e 's/^configure___ \([^=]*=\)\(.*\)$/\1"\2"/p'`
else
  REAL_CFLAGS="$CFLAGS"
fi
changequote([, ])dnl
rm ${tempcname}

ac_link="$ac_link $ld_switch_machine $ld_switch_system"

### Make sure subsequent tests use flags consistent with the build flags.

if test x"${OVERRIDE_CPPFLAGS}" != x; then
  CPPFLAGS="${OVERRIDE_CPPFLAGS}"
else
  CPPFLAGS="$c_switch_system $c_switch_machine $CPPFLAGS"
fi

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dnl Do this early because it can frob feature test macros for Unix-98 &c.
AC_SYS_LARGEFILE

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# Sound support for GNU/Linux and the free BSDs.
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AC_CHECK_HEADERS(machine/soundcard.h sys/soundcard.h soundcard.h)
# Emulation library used on NetBSD.
AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
AC_SUBST(LIBSOUND)
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dnl checks for header files
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AC_CHECK_HEADERS(sys/select.h sys/timeb.h sys/time.h unistd.h utime.h \
  linux/version.h sys/systeminfo.h termios.h limits.h string.h stdlib.h \
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  termcap.h stdio_ext.h fcntl.h term.h strings.h coff.h)
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AC_HEADER_STDC
AC_HEADER_TIME
AC_DECL_SYS_SIGLIST
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AC_HEADER_SYS_WAIT
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dnl Some systems have utime.h but don't declare the struct anyplace.
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AC_CACHE_CHECK(for struct utimbuf, emacs_cv_struct_utimbuf,
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AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif], [static struct utimbuf x; x.actime = x.modtime;],
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  emacs_cv_struct_utimbuf=yes, emacs_cv_struct_utimbuf=no))
if test $emacs_cv_struct_utimbuf = yes; then
  AC_DEFINE(HAVE_STRUCT_UTIMBUF)
fi
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dnl checks for typedefs
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AC_TYPE_SIGNAL
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dnl Check for speed_t typedef.
AC_CACHE_CHECK(for speed_t, emacs_cv_speed_t,
AC_TRY_COMPILE([#include <termios.h>], [speed_t x = 1;],
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  emacs_cv_speed_t=yes, emacs_cv_speed_t=no))
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if test $emacs_cv_speed_t = yes; then
  AC_DEFINE(HAVE_SPEED_T)
fi

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AC_CACHE_CHECK(for struct timeval, emacs_cv_struct_timeval,
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AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif], [static struct timeval x; x.tv_sec = x.tv_usec;],
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  emacs_cv_struct_timeval=yes, emacs_cv_struct_timeval=no))
HAVE_TIMEVAL=$emacs_cv_struct_timeval
if test $emacs_cv_struct_timeval = yes; then
  AC_DEFINE(HAVE_TIMEVAL)
fi
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AC_CACHE_CHECK(for struct exception, emacs_cv_struct_exception,
AC_TRY_COMPILE([#include <math.h>], 
[static struct exception x; x.arg1 = x.arg2 = x.retval; x.name = ""; x.type = 1;],
  emacs_cv_struct_exception=yes, emacs_cv_struct_exception=no))
HAVE_EXCEPTION=$emacs_cv_struct_exception
if test $emacs_cv_struct_exception != yes; then
  AC_DEFINE(NO_MATHERR)
fi

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dnl checks for structure members
AC_STRUCT_TM
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AC_STRUCT_TIMEZONE
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AC_CACHE_CHECK(for tm_gmtoff in struct tm, emacs_cv_tm_gmtoff,
AC_TRY_LINK([#include <time.h>], [struct tm t; t.tm_gmtoff = 0],
  emacs_cv_tm_gmtoff=yes,
  emacs_cv_tm_gmtoff=no))
if test $emacs_cv_tm_gmtoff = yes; then
  AC_DEFINE(HAVE_TM_GMTOFF)
fi
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dnl checks for compiler characteristics
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dnl Testing __STDC__ to determine prototype support isn't good enough.
dnl DEC C, for instance, doesn't define it with default options, and
dnl is used on 64-bit systems (OSF Alphas).  Similarly for volatile
dnl and void *.
AC_C_PROTOTYPES
AC_C_VOLATILE
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AC_C_CONST
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dnl This isn't useful because we can't turn on use of `inline' unless
dnl the compiler groks `extern inline'.
dnl AC_C_INLINE
AC_CACHE_CHECK([for void * support], emacs_cv_void_star,
  [AC_TRY_COMPILE(, [void * foo;], 
                   emacs_cv_void_star=yes, emacs_cv_void_star=no)])
if test $emacs_cv_void_star = yes; then
  AC_DEFINE(POINTER_TYPE, void)
else
  AC_DEFINE(POINTER_TYPE, char)
fi
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dnl check for Make feature
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AC_PROG_MAKE_SET
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dnl checks for operating system services
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AC_SYS_LONG_FILE_NAMES
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#### Choose a window system.

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AC_PATH_X
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if test "$no_x" = yes; then
  window_system=none
else
  window_system=x11
fi
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