code.delx.au - gnu-emacs/blob - configure.ac

   1 dnl  Autoconf script for GNU Emacs
   2 dnl To rebuild the 'configure' script from this, execute the command
   3 dnl     autoconf
   4 dnl in the directory containing this script.
   5 dnl If you changed any AC_DEFINES, also run autoheader.
   6 dnl
   7 dnl Copyright (C) 1994-1996, 1999-2016 Free Software Foundation, Inc.
   8 dnl
   9 dnl  This file is part of GNU Emacs.
  10 dnl
  11 dnl  GNU Emacs is free software: you can redistribute it and/or modify
  12 dnl  it under the terms of the GNU General Public License as published by
  13 dnl  the Free Software Foundation, either version 3 of the License, or
  14 dnl  (at your option) any later version.
  15 dnl
  16 dnl  GNU Emacs is distributed in the hope that it will be useful,
  17 dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 dnl  GNU General Public License for more details.
  20 dnl
  21 dnl  You should have received a copy of the GNU General Public License
  22 dnl  along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 AC_PREREQ(2.65)
  25 dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
  26 AC_INIT(GNU Emacs, 25.0.90, bug-gnu-emacs@gnu.org)
  27
  28 dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
  29 dnl and then quoted again for a C string.  Separate options with spaces.
  30 dnl Add some environment variables, if they were passed via the environment
  31 dnl rather than on the command-line.
  32 emacs_config_options=
  33 optsep=
  34 dnl This is the documented way to record the args passed to configure,
  35 dnl rather than $ac_configure_args.
  36 for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do
  37   case $opt in
  38     -n | --no-create | --no-recursion)
  39       continue ;;
  40     CFLAGS | CPPFLAGS | LDFLAGS)
  41       eval 'test "${'$opt'+set}" = set' || continue
  42       case " $*" in
  43         *" $opt="*) continue ;;
  44       esac
  45       eval opt=$opt=\$$opt ;;
  46   esac
  47
  48   emacs_shell_specials=$IFS\''"#$&()*;<>?@<:@\\`{|~'
  49   case $opt in
  50     *[["$emacs_shell_specials"]]*)
  51       case $opt in
  52         *\'*)
  53           emacs_quote_apostrophes="s/'/'\\\\''/g"
  54           opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_apostrophes"` ;;
  55       esac
  56       opt="'$opt'"
  57       case $opt in
  58         *[['"\\']]*)
  59           emacs_quote_for_c='s/[["\\]]/\\&/g; $!s/$/\\n\\/'
  60           opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_for_c"` ;;
  61       esac ;;
  62   esac
  63   AS_VAR_APPEND([emacs_config_options], ["$optsep$opt"])
  64   optsep=' '
  65 done
  66
  67 AC_CONFIG_HEADERS(src/config.h:src/config.in)
  68 AC_CONFIG_SRCDIR(src/lisp.h)
  69 AC_CONFIG_AUX_DIR(build-aux)
  70 dnl automake 1.13 and later understand this, making -I m4 unnecessary.
  71 dnl With older versions this is a no-op.
  72 AC_CONFIG_MACRO_DIR(m4)
  73
  74 xcsdkdir=
  75 AC_CHECK_PROGS(XCRUN, [xcrun])
  76 if test -n "$XCRUN"; then
  77   if test -z "$MAKE"; then
  78     dnl Call the variable MAKE_PROG, not MAKE, to avoid confusion with
  79     dnl the usual MAKE variable that 'make' itself uses.
  80     AC_CHECK_PROG([MAKE_PROG], [make], [yes])
  81     if test -z "$MAKE_PROG"; then
  82       MAKE="$XCRUN MAKE"
  83       export MAKE
  84       xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
  85     fi
  86   fi
  87 fi
  88
  89 dnl GNU Make is required, so don't test for its individual features.
  90 am_cv_make_support_nested_variables=yes
  91 AC_DEFUN([AC_PROG_MAKE_SET],
  92   [SET_MAKE=
  93    AC_SUBST([SET_MAKE])])
  94
  95 dnl Check for GNU Make and possibly set MAKE before running AM_INIT_AUTOMAKE.
  96 [emacs_check_gnu_make ()
  97 {
  98   emacs_makeout=`($1 --version) 2>/dev/null` &&
  99   case $emacs_makeout in
 100     'GNU Make '3.8[1-9]* | 'GNU Make '3.9[0-9]* | \
 101     'GNU Make '3.[1-9][0-9][0-9]* | 'GNU Make '[4-9]* | 'GNU Make '[1-9][0-9]* )
 102        ac_path_MAKE_found=:;;
 103   esac
 104 }]
 105 AC_CACHE_CHECK([for GNU Make], [ac_cv_path_MAKE],
 106   [ac_path_MAKE_found=false
 107    if test -n "$MAKE"; then
 108      emacs_check_gnu_make "$MAKE"
 109      ac_cv_path_MAKE=$MAKE
 110    else
 111      emacs_tried_make=false
 112      emacs_tried_gmake=false
 113      emacs_tried_gnumake=false
 114      AC_PATH_PROGS_FEATURE_CHECK([MAKE], [make gmake gnumake],
 115        [[emacs_check_gnu_make "$ac_path_MAKE"
 116          if $ac_path_MAKE_found; then
 117            # Use the fully-qualified program name only if the basename
 118            # would not resolve to it.
 119            if eval \$emacs_tried_$ac_prog; then
 120              ac_cv_path_MAKE=$ac_path_MAKE
 121            else
 122              ac_cv_path_MAKE=$ac_prog
 123            fi
 124          fi
 125          eval emacs_tried_$ac_prog=:]])
 126    fi])
 127 $ac_path_MAKE_found || {
 128 AC_MSG_ERROR([[Building Emacs requires GNU Make, at least version 3.81.
 129 If you have it installed under another name, configure with 'MAKE=...'.
 130 For example, run '$0 MAKE=gnu-make'.]])
 131 }
 132 MAKE=$ac_cv_path_MAKE
 133 export MAKE
 134
 135 dnl Fairly arbitrary, older versions might work too.
 136 AM_INIT_AUTOMAKE(1.11)
 137
 138 dnl Canonicalize the configuration name.
 139 AC_CANONICAL_HOST
 140
 141 case $host in
 142  *-mingw*)
 143
 144   if test -z "$host_alias"; then
 145
 146       # No --host argument was given to 'configure'; therefore $host
 147       # was set to a default value based on the build platform.  But
 148       # this default value may be wrong if we are building from a
 149       # 64-bit MSYS[2] pre-configured to build 32-bit MinGW programs.
 150       # Therefore, we'll try to get the right host platform from the
 151       # compiler's target.
 152
 153       AC_MSG_CHECKING([the compiler's target])
 154       if test -z "$CC"; then
 155           cc=gcc
 156       else
 157           cc=$CC
 158       fi
 159       cc_target=`$cc -v 2>&1 | sed -n 's/Target: //p'`
 160       case "$cc_target" in
 161           *-*) host=$cc_target
 162               ;;
 163           "") AC_MSG_ERROR([Impossible to obtain $cc compiler target.
 164 Please explicitly provide --host.])
 165               ;;
 166           *) AC_MSG_WARN([Compiler reported non-standard target.
 167 Defaulting to $host.])
 168               ;;
 169       esac
 170       AC_MSG_RESULT([$host])
 171   fi
 172
 173   . $srcdir/nt/mingw-cfg.site
 174
 175   case $srcdir in
 176     /* | ?:*)
 177       # srcdir is an absolute path.  In this case, force the format
 178       # "/c/foo/bar", to simplify later conversions to native Windows
 179       # format ("c:/foo/bar").
 180       srcdir=`cd "${srcdir}" && pwd -W`
 181       # 'eval' pacifies strict POSIX non-MinGW shells (Bug#18612).
 182       eval 'srcdir="/${srcdir:0:1}${srcdir:2}"'
 183       ;;
 184   esac;;
 185 esac
 186
 187 canonical=$host
 188 configuration=${host_alias-${build_alias-$host}}
 189
 190 dnl Support for --program-prefix, --program-suffix and
 191 dnl --program-transform-name options
 192 AC_ARG_PROGRAM
 193
 194 dnl It is important that variables on the RHS not be expanded here,
 195 dnl hence the single quotes.  This is per the GNU coding standards, see
 196 dnl (autoconf) Installation Directory Variables
 197 dnl See also epaths.h below.
 198 lispdir='${datadir}/emacs/${version}/lisp'
 199 standardlisppath='${lispdir}'
 200 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
 201 '${datadir}/emacs/site-lisp'
 202 lisppath='${locallisppath}:${standardlisppath}'
 203 etcdir='${datadir}/emacs/${version}/etc'
 204 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
 205 etcdocdir='${datadir}/emacs/${version}/etc'
 206 gamedir='${localstatedir}/games/emacs'
 207
 208 dnl Special option to disable the most of other options.
 209 AC_ARG_WITH(all,
 210 [AS_HELP_STRING([--without-all],
 211                 [omit almost all features and build
 212                 small executable with minimal dependencies])],
 213   [with_features=$withval],
 214   [with_features=yes])
 215
 216 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
 217 dnl Create a new --with option that defaults to being disabled.
 218 dnl NAME is the base name of the option.  The shell variable with_NAME
 219 dnl   will be set to either the user's value (if the option is
 220 dnl   specified; 'yes' for a plain --with-NAME) or to 'no' (if the
 221 dnl   option is not specified).  Note that the shell variable name is
 222 dnl   constructed as autoconf does, by replacing non-alphanumeric
 223 dnl   characters with "_".
 224 dnl HELP-STRING is the help text for the option.
 225 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
 226   AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
 227     m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
 228 ])dnl
 229
 230 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
 231 dnl Create a new --with option that defaults to $with_features.
 232 dnl NAME is the base name of the option.  The shell variable with_NAME
 233 dnl   will be set either to 'no' (for a plain --without-NAME) or to
 234 dnl   'yes' (if the option is not specified).  Note that the shell
 235 dnl   variable name is constructed as autoconf does, by replacing
 236 dnl   non-alphanumeric characters with "_".
 237 dnl HELP-STRING is the help text for the option.
 238 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
 239   AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
 240    m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
 241 ])dnl
 242
 243 OPTION_DEFAULT_ON([pop],[don't support POP mail retrieval with movemail])
 244 if test "$with_pop" = yes; then
 245    AC_DEFINE(MAIL_USE_POP)
 246 fi
 247 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
 248
 249 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
 250 if test "$with_kerberos" != no; then
 251    AC_DEFINE(KERBEROS)
 252 fi
 253 AH_TEMPLATE(KERBEROS,
 254             [Define to support Kerberos-authenticated POP mail retrieval.])dnl
 255
 256 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
 257 if test "${with_kerberos5}" != no; then
 258   if test "${with_kerberos}" = no; then
 259     with_kerberos=yes
 260     AC_DEFINE(KERBEROS)
 261   fi
 262   AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
 263 fi
 264
 265 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
 266 dnl FIXME hesiod support may not be present, so it seems like an error
 267 dnl to define, or at least use, this unconditionally.
 268 if test "$with_hesiod" != no; then
 269   AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
 270 fi
 271
 272 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
 273 if test "$with_mail_unlink" != no; then
 274    AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
 275 fi
 276
 277 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
 278     [string giving default POP mail host])],
 279     AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
 280
 281 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
 282   [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
 283 default yes).  Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
 284   [ case "${withval}" in
 285       yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
 286       *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
 287 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
 288       ;;
 289     esac
 290     with_sound=$val
 291   ],
 292   [with_sound=$with_features])
 293
 294 dnl FIXME currently it is not the last.
 295 dnl This should be the last --with option, because --with-x is
 296 dnl added later on when we find the file name of X, and it's best to
 297 dnl keep them together visually.
 298 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
 299  [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
 300 [         case "${withval}" in
 301             y | ye | yes )      val=gtk ;;
 302             n | no )            val=no  ;;
 303             l | lu | luc | luci | lucid )       val=lucid ;;
 304             a | at | ath | athe | athen | athena )      val=athena ;;
 305             m | mo | mot | moti | motif )       val=motif ;;
 306             g | gt | gtk  )     val=gtk ;;
 307             gtk2  )     val=gtk2 ;;
 308             gtk3  )     val=gtk3 ;;
 309             * )
 310 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
 311 this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
 312 'gtk2' or 'gtk3'.  'yes' and 'gtk' are synonyms.
 313 'athena' and 'lucid' are synonyms.])
 314             ;;
 315           esac
 316           with_x_toolkit=$val
 317 ])
 318
 319 OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit); allows buffer and string size up to 2GB on 32-bit hosts, at the cost of 10% to 30% slowdown of Lisp interpreter and larger memory footprint])
 320 if test "$with_wide_int" = yes; then
 321   AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
 322 fi
 323
 324 dnl _ON results in a '--without' option in the --help output, so
 325 dnl the help text should refer to "don't compile", etc.
 326 with_xpm_set=${with_xpm+set}
 327 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
 328 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
 329 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
 330 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
 331 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
 332 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
 333 OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])
 334 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
 335 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
 336
 337 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
 338 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
 339 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
 340
 341 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
 342 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
 343 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
 344 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
 345 [use Nextstep (OS X Cocoa or GNUstep) windowing system.
 346 On by default on Mac OS X.])],[],[with_ns=maybe])
 347 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
 348
 349 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
 350 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
 351 OPTION_DEFAULT_ON([gconf],[don't compile with GConf support])
 352 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
 353 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
 354 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
 355 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
 356 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
 357
 358 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
 359  [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
 360  [ case "${withval}" in
 361     y | ye | yes )      val=yes ;;
 362     n | no )            val=no  ;;
 363     i | in | ino | inot | inoti | inotif | inotify )    val=inotify ;;
 364     k | kq | kqu | kque | kqueu | kqueue )      val=kqueue ;;
 365     g | gf | gfi | gfil | gfile )       val=gfile ;;
 366     w | w3 | w32 )      val=w32 ;;
 367     * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
 368 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
 369 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
 370 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
 371     ;;
 372    esac
 373    with_file_notification=$val
 374  ],
 375  [with_file_notification=$with_features])
 376
 377 OPTION_DEFAULT_OFF([xwidgets],
 378   [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
 379
 380 ## For the times when you want to build Emacs but don't have
 381 ## a suitable makeinfo, and can live without the manuals.
 382 dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
 383 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
 384
 385 ## This might be a 'configure' arg.
 386 AC_SUBST([ACLOCAL_PATH])
 387
 388 ## Makefile.in needs the cache file name.
 389 AC_SUBST(cache_file)
 390
 391 ## This is an option because I do not know if all info/man support
 392 ## compressed files, nor how to test if they do so.
 393 OPTION_DEFAULT_ON([compress-install],
 394   [don't compress some files (.el, .info, etc.) when installing.  Equivalent to:
 395 make GZIP_PROG= install])
 396
 397 AC_ARG_WITH(gameuser,dnl
 398 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
 399                 [user for shared game score files.
 400                 An argument prefixed by ':' specifies a group instead.])])
 401 gameuser=
 402 gamegroup=
 403 # We don't test if we can actually chown/chgrp here, because configure
 404 # may run without root privileges.  lib-src/Makefile.in will handle
 405 # any errors due to missing user/group gracefully.
 406 case ${with_gameuser} in
 407   no) ;;
 408   "" | yes) gamegroup=games ;;
 409   :*) gamegroup=${with_gameuser#:} ;;
 410   *) gameuser=${with_gameuser} ;;
 411 esac
 412
 413 AC_ARG_WITH([gnustep-conf],dnl
 414 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
 415    [name of GNUstep configuration file to use on systems where the command
 416     'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
 417     /etc/GNUstep/GNUstep.conf])])
 418 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
 419   GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
 420 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
 421      GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
 422
 423 AC_ARG_ENABLE(ns-self-contained,
 424 [AS_HELP_STRING([--disable-ns-self-contained],
 425                 [disable self contained build under NeXTstep])],
 426    EN_NS_SELF_CONTAINED=$enableval,
 427    EN_NS_SELF_CONTAINED=yes)
 428
 429 locallisppathset=no
 430 AC_ARG_ENABLE(locallisppath,
 431 [AS_HELP_STRING([--enable-locallisppath=PATH],
 432                 [directories Emacs should search for lisp files specific
 433                  to this site])],
 434 if test "${enableval}" = "no"; then
 435   locallisppath=
 436 elif test "${enableval}" != "yes"; then
 437   locallisppath=${enableval} locallisppathset=yes
 438 fi)
 439
 440 AC_ARG_ENABLE(checking,
 441 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
 442                 [enable expensive run-time checks.  With LIST,
 443                  enable only specific categories of checks.
 444                  Categories are: all,yes,no.
 445                  Flags are: stringbytes, stringoverrun, stringfreelist,
 446                  xmallocoverrun, conslist, glyphs])],
 447 [ac_checking_flags="${enableval}"],[])
 448 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 449 for check in $ac_checking_flags
 450 do
 451         case $check in
 452         # these set all the flags to specific states
 453         yes)            ac_enable_checking=1 ;;
 454         no)             ac_enable_checking= ;
 455                         ac_gc_check_stringbytes= ;
 456                         ac_gc_check_string_overrun= ;
 457                         ac_gc_check_string_free_list= ;
 458                         ac_xmalloc_overrun= ;
 459                         ac_gc_check_cons_list= ;
 460                         ac_glyphs_debug= ;;
 461         all)            ac_enable_checking=1 ;
 462                         ac_gc_check_stringbytes=1 ;
 463                         ac_gc_check_string_overrun=1 ;
 464                         ac_gc_check_string_free_list=1 ;
 465                         ac_xmalloc_overrun=1 ;
 466                         ac_gc_check_cons_list=1 ;
 467                         ac_glyphs_debug=1 ;;
 468         # these enable particular checks
 469         stringbytes)    ac_gc_check_stringbytes=1 ;;
 470         stringoverrun)  ac_gc_check_string_overrun=1 ;;
 471         stringfreelist) ac_gc_check_string_free_list=1 ;;
 472         xmallocoverrun) ac_xmalloc_overrun=1 ;;
 473         conslist)       ac_gc_check_cons_list=1 ;;
 474         glyphs)         ac_glyphs_debug=1 ;;
 475         *)      AC_MSG_ERROR(unknown check category $check) ;;
 476         esac
 477 done
 478 IFS="$ac_save_IFS"
 479
 480 if test x$ac_enable_checking != x ; then
 481   AC_DEFINE(ENABLE_CHECKING, 1,
 482 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
 483 fi
 484 if test x$ac_gc_check_stringbytes != x ; then
 485   AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
 486 [Define this temporarily to hunt a bug.  If defined, the size of
 487    strings is redundantly recorded in sdata structures so that it can
 488    be compared to the sizes recorded in Lisp strings.])
 489 fi
 490 if test x$ac_gc_check_string_overrun != x ; then
 491   AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
 492 [Define this to check for short string overrun.])
 493 fi
 494 if test x$ac_gc_check_string_free_list != x ; then
 495   AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
 496 [Define this to check the string free list.])
 497 fi
 498 if test x$ac_xmalloc_overrun != x ; then
 499   AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
 500 [Define this to check for malloc buffer overrun.])
 501 fi
 502 if test x$ac_gc_check_cons_list != x ; then
 503   AC_DEFINE(GC_CHECK_CONS_LIST, 1,
 504 [Define this to check for errors in cons list.])
 505 fi
 506 if test x$ac_glyphs_debug != x ; then
 507   AC_DEFINE(GLYPH_DEBUG, 1,
 508 [Define this to enable glyphs debugging code.])
 509 fi
 510
 511 AC_ARG_ENABLE(check-lisp-object-type,
 512 [AS_HELP_STRING([--enable-check-lisp-object-type],
 513                 [enable compile time checks for the Lisp_Object data type.
 514                 This is useful for development for catching certain types of bugs.])],
 515 if test "${enableval}" != "no"; then
 516    AC_DEFINE(CHECK_LISP_OBJECT_TYPE, 1,
 517    [Define this to enable compile time checks for the Lisp_Object data type.])
 518 fi)
 519
 520
 521 dnl The name of this option is unfortunate.  It predates, and has no
 522 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
 523 dnl Actually, it stops it working.
 524 dnl http://lists.gnu.org/archive/html/emacs-devel/2012-11/msg00393.html
 525 AC_ARG_ENABLE(profiling,
 526 [AS_HELP_STRING([--enable-profiling],
 527                 [build emacs with low-level, gprof profiling support.
 528                 Mainly useful for debugging Emacs itself.  May not work on
 529                 all platforms.  Stops profiler.el working.])],
 530 [ac_enable_profiling="${enableval}"],[])
 531 if test x$ac_enable_profiling != x ; then
 532    PROFILING_CFLAGS="-DPROFILING=1 -pg"
 533 else
 534    PROFILING_CFLAGS=
 535 fi
 536 AC_SUBST(PROFILING_CFLAGS)
 537
 538 AC_ARG_ENABLE(autodepend,
 539 [AS_HELP_STRING([--enable-autodepend],
 540                 [automatically generate dependencies to .h-files.
 541                  Requires gcc, enabled if found.])],
 542 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
 543
 544 AC_ARG_ENABLE(gtk-deprecation-warnings,
 545 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
 546                 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
 547 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
 548
 549 dnl This used to use changequote, but, apart from 'changequote is evil'
 550 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
 551 dnl the great gob of text.  Thus it's not processed for possible expansion.
 552 dnl Just make sure the brackets remain balanced.
 553 dnl
 554 dnl Since Emacs can't find matching pairs of quotes, boundaries are
 555 dnl indicated by comments.
 556 dnl quotation begins
 557 [
 558
 559 ### If you add support for a new configuration, add code to this
 560 ### switch statement to recognize your configuration name and select
 561 ### the appropriate opsys.
 562
 563 ### As far as handling version numbers on operating systems is
 564 ### concerned, make sure things will fail in a fixable way.  If
 565 ### /etc/MACHINES doesn't say anything about version numbers, be
 566 ### prepared to handle anything reasonably.  If version numbers
 567 ### matter, be sure /etc/MACHINES says something about it.
 568
 569 opsys='' unported=no
 570 case "${canonical}" in
 571
 572   ## GNU/Linux and similar ports
 573   *-*-linux* )
 574     opsys=gnu-linux
 575   ;;
 576
 577   ## FreeBSD ports
 578   *-*-freebsd* )
 579     opsys=freebsd
 580   ;;
 581
 582   ## DragonFly ports
 583   *-*-dragonfly* )
 584     opsys=dragonfly
 585   ;;
 586
 587   ## FreeBSD kernel + glibc based userland
 588   *-*-kfreebsd*gnu* )
 589     opsys=gnu-kfreebsd
 590   ;;
 591
 592   ## NetBSD ports
 593   *-*-netbsd* )
 594     opsys=netbsd
 595   ;;
 596
 597   ## OpenBSD ports
 598   *-*-openbsd* | *-*-mirbsd* )
 599     opsys=openbsd
 600   ;;
 601
 602   ## Apple Darwin / Mac OS X
 603   *-apple-darwin* )
 604     case "${canonical}" in
 605       *-apple-darwin[0-9].*) unported=yes ;;
 606       i[3456]86-* | x86_64-* )  ;;
 607       * )            unported=yes ;;
 608     esac
 609     opsys=darwin
 610     ## Use fink packages if available.
 611     ## FIXME find a better way to do this: http://debbugs.gnu.org/11507
 612 ##    if test -d /sw/include && test -d /sw/lib; then
 613 ##      GCC_TEST_OPTIONS="-I/sw/include -L/sw/lib"
 614 ##      NON_GCC_TEST_OPTIONS=${GCC_TEST_OPTIONS}
 615 ##    fi
 616   ;;
 617
 618   ## Chromium Native Client
 619   *-nacl )
 620     opsys=nacl
 621   ;;
 622
 623   ## Cygwin ports
 624   *-*-cygwin )
 625     opsys=cygwin
 626   ;;
 627
 628   ## HP 9000 series 700 and 800, running HP/UX
 629   hppa*-hp-hpux10.2* )
 630     opsys=hpux10-20
 631   ;;
 632   hppa*-hp-hpux1[1-9]* )
 633     opsys=hpux11
 634     CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
 635   ;;
 636
 637   ## IBM machines
 638   rs6000-ibm-aix4.[23]* )
 639     opsys=aix4-2
 640   ;;
 641   powerpc-ibm-aix4.[23]*  )
 642     opsys=aix4-2
 643   ;;
 644   rs6000-ibm-aix[56]* )
 645     opsys=aix4-2
 646   ;;
 647   powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
 648     opsys=aix4-2
 649   ;;
 650
 651   ## Silicon Graphics machines
 652   ## Iris 4D
 653   mips-sgi-irix6.5 )
 654     opsys=irix6-5
 655     # Without defining _LANGUAGE_C, things get masked out in the headers
 656     # so that, for instance, grepping for 'free' in stdlib.h fails and
 657     # AC_HEADER_STD_C fails.   (MIPSPro 7.2.1.2m compilers, Irix 6.5.3m).
 658     NON_GCC_TEST_OPTIONS="-D_LANGUAGE_C"
 659   ;;
 660
 661   ## Suns
 662   *-sun-solaris* \
 663     | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
 664     | x86_64-*-solaris2*    | x86_64-*-sunos5*)
 665     case "${canonical}" in
 666       i[3456]86-*-* )   ;;
 667       amd64-*-*|x86_64-*-*) ;;
 668       sparc* )          ;;
 669       * )               unported=yes ;;
 670     esac
 671     case "${canonical}" in
 672       *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
 673                 opsys=sol2-10
 674                 emacs_check_sunpro_c=yes
 675                 ;;
 676       *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
 677       ## Note that Emacs 23.1's NEWS said the following would be dropped.
 678       *-sunos5.6* | *-solaris2.6* )
 679                 opsys=sol2-6
 680                 RANLIB="ar -ts"
 681                 ;;
 682       ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
 683       *-sunos5.[7-9]* | *-solaris2.[7-9]* )
 684                 opsys=sol2-6
 685                 emacs_check_sunpro_c=yes
 686                 ;;
 687     esac
 688     ## Watch out for a compiler that we know will not work.
 689     case "${canonical}" in
 690      *-solaris* | *-sunos5* )
 691                 if [ "x$CC" = x/usr/ucb/cc ]; then
 692                   ## /usr/ucb/cc doesn't work;
 693                   ## we should find some other compiler that does work.
 694                   unset CC
 695                 fi
 696                 ;;
 697       *) ;;
 698     esac
 699   ;;
 700
 701   ## Intel 386 machines where we don't care about the manufacturer.
 702   i[3456]86-*-* )
 703     case "${canonical}" in
 704       *-darwin* )               opsys=darwin ;;
 705       *-mingw* )
 706                 opsys=mingw32
 707                 # MinGW overrides and adds some system headers in nt/inc.
 708                 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
 709                 ;;
 710       *-sysv4.2uw* )            opsys=unixware ;;
 711       *-sysv5uw* )              opsys=unixware ;;
 712       *-sysv5OpenUNIX* )        opsys=unixware ;;
 713       ## Otherwise, we'll fall through to the generic opsys code at the bottom.
 714     esac
 715   ;;
 716
 717   # MinGW64
 718   x86_64-*-* )
 719     case "${canonical}" in
 720       *-mingw* )
 721                 opsys=mingw32
 722                 # MinGW overrides and adds some system headers in nt/inc.
 723                 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
 724                 ;;
 725       ## Otherwise, we'll fall through to the generic opsys code at the bottom.
 726     esac
 727   ;;
 728
 729   * )
 730     unported=yes
 731   ;;
 732 esac
 733
 734 ### If the code above didn't choose an operating system, just choose
 735 ### an operating system based on the configuration name.  You really
 736 ### only want to use this when you have no idea what the right
 737 ### operating system is; if you know what operating systems a machine
 738 ### runs, it's cleaner to make it explicit in the case statement
 739 ### above.
 740 if test x"${opsys}" = x; then
 741   case "${canonical}" in
 742     *-gnu* )                            opsys=gnu ;;
 743     * )
 744       unported=yes
 745     ;;
 746   esac
 747 fi
 748
 749 ]
 750 dnl quotation ends
 751
 752 if test $unported = yes; then
 753   AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
 754 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
 755 Check 'etc/MACHINES' for recognized configuration names.])
 756 fi
 757
 758 #### Choose a compiler.
 759
 760 dnl Don't bother to test for C89.
 761 AC_DEFUN([_AC_PROG_CC_C89], [$2])
 762
 763 dnl Sets GCC=yes if using gcc.
 764 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
 765 if test -n "$XCRUN"; then
 766   AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
 767   test -n "$AR" && export AR
 768 fi
 769
 770 dnl Emacs needs C99 or later.
 771 gl_PROG_CC_C99
 772
 773 AM_PROG_CC_C_O
 774
 775 if test x$GCC = xyes; then
 776   test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
 777 else
 778   test "x$NON_GCC_TEST_OPTIONS" != x && CC="$CC $NON_GCC_TEST_OPTIONS"
 779 fi
 780
 781 dnl This is used in lib/Makefile.am to use nt/gnulib.mk, the
 782 dnl alternative to lib/gnulib.mk, so as to avoid generating header files
 783 dnl that clash with MinGW.
 784 AM_CONDITIONAL([BUILDING_FOR_WINDOWSNT], [test "x$opsys" = "xmingw32"])
 785
 786 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
 787 AC_DEFUN([gl_CRYPTO_CHECK])
 788 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
 789 # as we don't use them.
 790 AC_DEFUN([gl_FCNTL_O_FLAGS])
 791 # Avoid gnulib's test for pthread_sigmask.
 792 funcs=
 793 for func in $ac_func_list; do
 794   test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
 795 done
 796 ac_func_list=$funcs
 797 # Use the system putenv even if it lacks GNU features, as we don't need them,
 798 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
 799 AC_CHECK_FUNCS_ONCE([putenv])
 800 AC_DEFUN([gl_FUNC_PUTENV],
 801   [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
 802
 803 # Initialize gnulib right after choosing the compiler.
 804 dnl Amongst other things, this sets AR and ARFLAGS.
 805 gl_EARLY
 806
 807 if test "$ac_test_CFLAGS" != set; then
 808   # It's helpful to have C macros available to GDB, so prefer -g3 to -g
 809   # if -g3 works and the user does not specify CFLAGS.
 810   # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
 811   case $CFLAGS in
 812     '-g')
 813       emacs_g3_CFLAGS='-g3';;
 814     '-g -O2')
 815       emacs_g3_CFLAGS='-g3 -O2';;
 816     *)
 817       emacs_g3_CFLAGS='';;
 818   esac
 819   if test -n "$emacs_g3_CFLAGS"; then
 820     emacs_save_CFLAGS=$CFLAGS
 821     CFLAGS=$emacs_g3_CFLAGS
 822     AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
 823       [emacs_cv_prog_cc_g3],
 824       [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
 825          [emacs_cv_prog_cc_g3=yes],
 826          [emacs_cv_prog_cc_g3=no])])
 827     if test $emacs_cv_prog_cc_g3 != yes; then
 828       CFLAGS=$emacs_save_CFLAGS
 829     fi
 830     if test $opsys = mingw32; then
 831       CFLAGS="$CFLAGS -gdwarf-2"
 832     fi
 833   fi
 834
 835   case $CFLAGS in
 836     *-O*) ;;
 837     *)
 838       # No optimization flag was inferred for this non-GCC compiler.
 839       # Try -O.  This is needed for xlc on AIX; see Bug#14258.
 840       emacs_save_CFLAGS=$CFLAGS
 841       test -z "$CFLAGS" || CFLAGS="$CFLAGS "
 842       CFLAGS=${CFLAGS}-O
 843       AC_CACHE_CHECK([whether $CC accepts -O],
 844         [emacs_cv_prog_cc_o],
 845         [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
 846            [emacs_cv_prog_cc_o=yes],
 847            [emacs_cv_prog_cc_o=no])])
 848       if test $emacs_cv_prog_cc_o != yes; then
 849         CFLAGS=$emacs_save_CFLAGS
 850       fi ;;
 851   esac
 852 fi
 853
 854 AC_ARG_ENABLE([gcc-warnings],
 855   [AS_HELP_STRING([--enable-gcc-warnings],
 856                   [turn on lots of GCC warnings/errors. This is intended for
 857                    developers, and may generate false alarms when used
 858                    with older or non-GNU development tools.])],
 859   [case $enableval in
 860      yes|no) ;;
 861      *)      AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
 862    esac
 863    gl_gcc_warnings=$enableval],
 864   [gl_gcc_warnings=no]
 865 )
 866
 867 # clang is unduly picky about some things.
 868 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
 869   [AC_COMPILE_IFELSE(
 870      [AC_LANG_PROGRAM([[
 871           #ifndef __clang__
 872             error "not clang";
 873           #endif
 874         ]])],
 875      [emacs_cv_clang=yes],
 876      [emacs_cv_clang=no])])
 877
 878 # When compiling with GCC, prefer -isystem to -I when including system
 879 # include files, to avoid generating useless diagnostics for the files.
 880 if test "$gl_gcc_warnings" != yes; then
 881   isystem='-I'
 882   if test "$emacs_cv_clang" = yes
 883   then
 884      # Turn off some warnings if supported.
 885      gl_WARN_ADD([-Wno-switch])
 886      gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
 887      gl_WARN_ADD([-Wno-pointer-sign])
 888      gl_WARN_ADD([-Wno-string-plus-int])
 889      gl_WARN_ADD([-Wno-unknown-attributes])
 890   fi
 891 else
 892   isystem='-isystem '
 893
 894   # This, $nw, is the list of warnings we disable.
 895   nw=
 896
 897   case $with_x_toolkit in
 898     lucid | athena | motif)
 899        # Old toolkits mishandle 'const'.
 900        nw="$nw -Wwrite-strings"
 901        ;;
 902     *)
 903        gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
 904        ;;
 905   esac
 906   AC_SUBST([WERROR_CFLAGS])
 907
 908   nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
 909   nw="$nw -Woverlength-strings"     # Not a problem these days
 910   nw="$nw -Wformat-nonliteral"      # we do this a lot
 911   nw="$nw -Wvla"                    # Emacs uses <vla.h>.
 912   nw="$nw -Wswitch-default"         # Too many warnings for now
 913   nw="$nw -Winline"                 # OK to ignore 'inline'
 914   nw="$nw -Wjump-misses-init"       # We sometimes safely jump over init.
 915   nw="$nw -Wstrict-overflow"        # OK to optimize assuming that
 916                                     # signed overflow has undefined behavior
 917   nw="$nw -Wsync-nand"              # irrelevant here, and provokes ObjC warning
 918   nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
 919   nw="$nw -Wbad-function-cast"      # These casts are no worse than others.
 920
 921   # Emacs doesn't care about shadowing; see
 922   # <http://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
 923   nw="$nw -Wshadow"
 924
 925   # Emacs's use of alloca inhibits protecting the stack.
 926   nw="$nw -Wstack-protector"
 927
 928   # Emacs's use of partly-const functions such as Fgnutls_available_p
 929   # make this option problematic.
 930   nw="$nw -Wsuggest-attribute=const"
 931
 932   # Emacs's use of partly-pure functions such as CHECK_TYPE make this
 933   # option problematic.
 934   nw="$nw -Wsuggest-attribute=pure"
 935
 936   # This part is merely for shortening the command line,
 937   # since -Wall implies -Wswitch.
 938   nw="$nw -Wswitch"
 939
 940   # This part is merely for shortening the command line,
 941   # since -Wno-FOO needs to be added below regardless.
 942   nw="$nw -Wmissing-field-initializers"
 943   nw="$nw -Wtype-limits"
 944   nw="$nw -Wunused-parameter"
 945
 946   if test $emacs_cv_clang = yes; then
 947     nw="$nw -Wcast-align"
 948   fi
 949
 950   gl_MANYWARN_ALL_GCC([ws])
 951   gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
 952   for w in $ws; do
 953     gl_WARN_ADD([$w])
 954   done
 955   gl_WARN_ADD([-Wredundant-decls])     # Prefer this, as we don't use Bison.
 956   gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
 957   gl_WARN_ADD([-Wno-sign-compare])     # Too many warnings for now
 958   gl_WARN_ADD([-Wno-type-limits])      # Too many warnings for now
 959   gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
 960   gl_WARN_ADD([-Wno-format-nonliteral])
 961
 962   # More things that clang is unduly picky about.
 963   if test $emacs_cv_clang = yes; then
 964     gl_WARN_ADD([-Wno-format-extra-args])
 965     gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
 966     gl_WARN_ADD([-Wno-unused-command-line-argument])
 967     gl_WARN_ADD([-Wno-unused-value])
 968   fi
 969
 970   AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
 971   AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
 972   AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
 973   [/* Enable compile-time and run-time bounds-checking, and some warnings,
 974       without upsetting glibc 2.15+. */
 975    #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
 976         && defined __OPTIMIZE__ && __OPTIMIZE__)
 977    # define _FORTIFY_SOURCE 2
 978    #endif
 979   ])
 980
 981   # We use a slightly smaller set of warning options for lib/.
 982   # Remove the following and save the result in GNULIB_WARN_CFLAGS.
 983   nw=
 984   nw="$nw -Wunused-macros"
 985
 986   gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
 987   AC_SUBST([GNULIB_WARN_CFLAGS])
 988 fi
 989
 990 edit_cflags="
 991   s,///*,/,g
 992   s/^/ /
 993   s/ -I/ $isystem/g
 994   s/^ //
 995 "
 996
 997 AC_ARG_ENABLE(link-time-optimization,
 998 [AS_HELP_STRING([--enable-link-time-optimization],
 999                 [build emacs with link-time optimization.
1000                  This requires GCC 4.5.0 or later, or clang.
1001                  (Note that clang support is experimental - see INSTALL.)
1002                  It also makes Emacs harder to debug, and when we tried it
1003                  with GCC 4.9.0 x86-64 it made Emacs slower, so it's not
1004                  recommended for typical use.])],
1005 if test "${enableval}" != "no"; then
1006    ac_lto_supported=no
1007    if test $emacs_cv_clang = yes; then
1008       AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1009       GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1010       if test -x "$GOLD_PLUGIN"; then
1011          LTO="-flto"
1012       fi
1013    elif test x$GCC = xyes; then
1014       AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1015       CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1016       if test x$CPUS != x; then
1017          LTO="-flto=$CPUS"
1018       else
1019          LTO="-flto"
1020       fi
1021    else
1022       AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1023    fi
1024    if test -z "$LTO"; then
1025       ac_lto_supported=no
1026    else
1027       old_CFLAGS=$CFLAGS
1028       CFLAGS="$CFLAGS $LTO"
1029       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1030          [ac_lto_supported=yes], [ac_lto_supported=no])
1031          CFLAGS="$old_CFLAGS"
1032    fi
1033    AC_MSG_RESULT([$ac_lto_supported])
1034    if test "$ac_lto_supported" = "yes"; then
1035       CFLAGS="$CFLAGS $LTO"
1036       if test x$emacs_cv_clang = xyes; then
1037          AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1038          # WARNING: 'ar --plugin ...' doesn't work without
1039          # command, so plugin name is appended to ARFLAGS.
1040          ARFLAGS="cru --plugin $GOLD_PLUGIN"
1041          RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1042       else
1043         dnl The following is needed for GCC 4.9.0.  The GCC 4.9.0 release notes
1044         dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1045         dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1046         dnl dump core on Fedora 20, so play it safe for now.
1047         gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1048           [CFLAGS="$CFLAGS -ffat-lto-objects"])
1049       fi
1050    fi
1051 fi)
1052
1053 dnl Prefer silent make output.  For verbose output, use
1054 dnl 'configure --disable-silent-rules' or 'make V=1' .
1055 AM_SILENT_RULES([yes])
1056 dnl Port to Automake 1.11.
1057 dnl This section can be removed once we assume Automake 1.14 or later.
1058 : ${AM_V=$AM_DEFAULT_VERBOSITY}
1059 : ${AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY}
1060 AC_SUBST([AM_V])
1061 AM_SUBST_NOTMAKE([AM_V])
1062 AC_SUBST([AM_DEFAULT_V])
1063 AM_SUBST_NOTMAKE([AM_DEFAULT_V])
1064 AC_SUBST([AM_DEFAULT_VERBOSITY])
1065
1066 dnl Some other nice autoconf tests.
1067 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1068 dnl AC_PROG_INSTALL
1069 dnl AC_PROG_MKDIR_P
1070 dnl if test "x$RANLIB" = x; then
1071 dnl   AC_PROG_RANLIB
1072 dnl fi
1073
1074
1075 dnl Sadly, AC_PROG_LN_S is too restrictive.  It also tests whether links
1076 dnl can be made to directories.  This is not relevant for our usage, and
1077 dnl excludes some cases that work fine for us.  Eg MS Windows or files
1078 dnl hosted on AFS, both examples where simple links work, but links to
1079 dnl directories fail.  We use a cut-down version instead.
1080 dnl AC_PROG_LN_S
1081
1082 AC_MSG_CHECKING([whether ln -s works for files in the same directory])
1083 rm -f conf$$ conf$$.file
1084
1085 LN_S_FILEONLY='cp -p'
1086
1087 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1088 dnl random program in the current directory.
1089 if (echo >conf$$.file) 2>/dev/null; then
1090   if ln -s conf$$.file conf$$ 2>/dev/null; then
1091     if test "$opsys" = "mingw32"; then
1092       LN_S_FILEONLY='/bin/ln -s'
1093     else
1094       LN_S_FILEONLY='ln -s'
1095     fi
1096   elif ln conf$$.file conf$$ 2>/dev/null; then
1097     if test "$opsys" = "mingw32"; then
1098       LN_S_FILEONLY=/bin/ln
1099     else
1100       LN_S_FILEONLY=ln
1101     fi
1102   fi
1103 fi
1104
1105 rm -f conf$$ conf$$.file
1106
1107 if test "$LN_S_FILEONLY" = "ln -s"; then
1108    AC_MSG_RESULT([yes])
1109 else
1110    AC_MSG_RESULT([no, using $LN_S_FILEONLY])
1111 fi
1112
1113 AC_SUBST(LN_S_FILEONLY)
1114
1115
1116 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1117 dnl doesn't support links to directories, as in "ln file dir".  But that
1118 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1119 dnl executables at "make install" time.
1120 dnl See http://lists.gnu.org/archive/html/emacs-devel/2013-04/msg00475.html
1121 dnl for more details.
1122 if test "$opsys" = "mingw32"; then
1123   LN_S="/bin/ln"
1124 fi
1125
1126 dnl On some Debian versions, "install-info" prints irritating messages
1127 dnl "This is not dpkg install-info anymore, but GNU install-info"
1128 dnl if called via an absolute file name.
1129 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1130 dnl Sadly some people may have an old ginstall-info installed on
1131 dnl non-Debian systems, so we can't use this.
1132 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1133 dnl   $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1134
1135 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1136   $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1137 dnl Don't use GZIP, which is used by gzip for additional parameters.
1138 AC_PATH_PROG(GZIP_PROG, gzip)
1139
1140 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1141    GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1142
1143 if test $opsys = gnu-linux; then
1144   AC_PATH_PROG(PAXCTL, paxctl,,
1145     [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1146   if test "X$PAXCTL" != X; then
1147     AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1148     AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1149       [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then AC_MSG_RESULT(yes)
1150       else AC_MSG_RESULT(no); PAXCTL=""; fi])
1151   fi
1152
1153   if test "${SETFATTR+set}" != set; then
1154     AC_CACHE_CHECK([for setfattr],
1155       [emacs_cv_prog_setfattr],
1156       [touch conftest.tmp
1157        if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1158          emacs_cv_prog_setfattr=yes
1159        else
1160          emacs_cv_prog_setfattr=no
1161        fi])
1162     if test "$emacs_cv_prog_setfattr" = yes; then
1163       SETFATTR=setfattr
1164     else
1165       SETFATTR=
1166     fi
1167     rm -f conftest.tmp
1168     AC_SUBST([SETFATTR])
1169   fi
1170 fi
1171
1172 ## Need makeinfo >= 4.7 (?) to build the manuals.
1173 if test "$MAKEINFO" != "no"; then
1174   if test "$MAKEINFO" = "${am_missing_run}makeinfo"; then
1175     MAKEINFO=makeinfo
1176   fi
1177   case `($MAKEINFO --version) 2>/dev/null` in
1178     *' (GNU texinfo) '4.[[7-9]]* | \
1179     *' (GNU texinfo) '4.[[1-9][0-9]]* | \
1180     *' (GNU texinfo) '[[5-9]]* | \
1181     *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1182     *) MAKEINFO=no;;
1183   esac
1184 fi
1185
1186 ## Makeinfo is unusual.  For a released Emacs, the manuals are
1187 ## pre-built, and not deleted by the normal clean rules.  makeinfo is
1188 ## therefore in the category of "special tools" not normally required, which
1189 ## configure does not have to check for (eg autoconf itself).
1190 ## In a repository checkout on the other hand, the manuals are not included.
1191 ## So makeinfo is a requirement to build from the repository, and configure
1192 ## should test for it as it does for any other build requirement.
1193 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1194 ## with pre-built manuals, from a repository checkout.
1195 HAVE_MAKEINFO=yes
1196
1197 if test "$MAKEINFO" = "no"; then
1198   MAKEINFO=makeinfo
1199   if test "x${with_makeinfo}" = "xno"; then
1200     HAVE_MAKEINFO=no
1201   elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1202     AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.7, and your
1203 source tree does not seem to have pre-built manuals in the 'info' directory.
1204 Either install a suitable version of makeinfo, or re-run configure
1205 with the '--without-makeinfo' option to build without the manuals.] )
1206   fi
1207 fi
1208 AC_SUBST(HAVE_MAKEINFO)
1209
1210 if test $opsys = mingw32; then
1211    DOCMISC_W32=efaq-w32
1212 else
1213    DOCMISC_W32=
1214 fi
1215 AC_SUBST(DOCMISC_W32)
1216
1217 dnl Add our options to ac_link now, after it is set up.
1218
1219 if test x$GCC = xyes; then
1220   test "x$GCC_LINK_TEST_OPTIONS" != x && \
1221     ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1222 else
1223   test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1224     ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1225 fi
1226
1227 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1228 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1229 dnl (Don't use '-z nocombreloc' as -z takes no arg on Irix.)
1230 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1231 dnl if not built to support GNU ld.
1232
1233 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1234 dnl LD_SWITCH_SYSTEM_TEMACS.  That is:
1235 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1236 dnl   Eg "make LDFLAGS=... all" could run into problems,
1237 dnl   http://bugs.debian.org/684788
1238 dnl * unnecessary, since temacs is the only thing that actually needs it.
1239 dnl   Indeed this is where it was originally, prior to:
1240 dnl   http://lists.gnu.org/archive/html/emacs-pretest-bug/2004-03/msg00170.html
1241 late_LDFLAGS="$LDFLAGS"
1242 if test x$GCC = xyes; then
1243   LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1244 else
1245   LDFLAGS_NOCOMBRELOC="-znocombreloc"
1246 fi
1247
1248 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1249
1250 AC_MSG_CHECKING([for -znocombreloc])
1251 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1252   [AC_MSG_RESULT(yes)],
1253   LDFLAGS_NOCOMBRELOC=
1254   [AC_MSG_RESULT(no)])
1255
1256 LDFLAGS="$late_LDFLAGS"
1257
1258 AC_CACHE_CHECK([whether addresses are sanitized],
1259   [emacs_cv_sanitize_address],
1260   [AC_COMPILE_IFELSE(
1261      [AC_LANG_PROGRAM(
1262         [[#ifndef __has_feature
1263           #define __has_feature(f) 0
1264           #endif
1265           #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1266           #else
1267            error "Addresses are not sanitized.";
1268           #endif
1269         ]])],
1270      [emacs_cv_sanitize_address=yes],
1271      [emacs_cv_sanitize_address=no])])
1272
1273 dnl The function dump-emacs will not be defined and temacs will do
1274 dnl (load "loadup") automatically unless told otherwise.
1275 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1276 case "$opsys" in
1277   nacl) CANNOT_DUMP=yes ;;
1278 esac
1279
1280 if test "$CANNOT_DUMP" = "yes"; then
1281   AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1282 elif test "$emacs_cv_sanitize_address" = yes; then
1283   AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1284 fi
1285
1286 AC_SUBST(CANNOT_DUMP)
1287
1288
1289 UNEXEC_OBJ=unexelf.o
1290 case "$opsys" in
1291   # MSDOS uses unexcoff.o
1292   aix4-2)
1293    UNEXEC_OBJ=unexaix.o
1294    ;;
1295   cygwin)
1296    UNEXEC_OBJ=unexcw.o
1297    ;;
1298   darwin)
1299    UNEXEC_OBJ=unexmacosx.o
1300    ;;
1301   hpux10-20 | hpux11)
1302    UNEXEC_OBJ=unexhp9k800.o
1303    ;;
1304   mingw32)
1305    UNEXEC_OBJ=unexw32.o
1306    ;;
1307   sol2-10)
1308    # Use the Solaris dldump() function, called from unexsol.c, to dump
1309    # emacs, instead of the generic ELF dump code found in unexelf.c.
1310    # The resulting binary has a complete symbol table, and is better
1311    # for debugging and other observability tools (debuggers, pstack, etc).
1312    #
1313    # If you encounter a problem using dldump(), please consider sending
1314    # a message to the OpenSolaris tools-linking mailing list:
1315    #      http://mail.opensolaris.org/mailman/listinfo/tools-linking
1316    #
1317    # It is likely that dldump() works with older Solaris too, but this has
1318    # not been tested, so for now this change is for Solaris 10 or newer.
1319    UNEXEC_OBJ=unexsol.o
1320    ;;
1321 esac
1322
1323 LD_SWITCH_SYSTEM=
1324 case "$opsys" in
1325   freebsd|dragonfly)
1326    ## Let 'ld' find image libs and similar things in /usr/local/lib.
1327    ## The system compiler, GCC, has apparently been modified to not
1328    ## look there, contrary to what a stock GCC would do.
1329 ### It's not our place to do this.  See bug#10313#17.
1330 ###   LD_SWITCH_SYSTEM=-L/usr/local/lib
1331       :
1332    ;;
1333
1334   gnu-linux)
1335    ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1336    case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1337    ;;
1338
1339   netbsd)
1340 ### It's not our place to do this.  See bug#10313#17.
1341 ###   LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1342       :
1343    ;;
1344
1345   openbsd)
1346    ## Han Boetes <han@boetes.org> says this is necessary,
1347    ## otherwise Emacs dumps core on elf systems.
1348    LD_SWITCH_SYSTEM="-Z"
1349    ;;
1350 esac
1351 AC_SUBST(LD_SWITCH_SYSTEM)
1352
1353 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1354
1355 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1356 ## which has not been defined yet.  When this was handled with cpp,
1357 ## it was expanded to null when configure sourced the s/*.h file.
1358 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1359 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1360 ## (or somesuch), but because it is supposed to go at the _front_
1361 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1362 ## Compare with the gnu-linux case below, which added to the end
1363 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1364 ## LD_SWITCH_SYSTEM_TEMACS.
1365 case "$opsys" in
1366   netbsd|openbsd)
1367    LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1368 esac
1369
1370
1371 C_SWITCH_MACHINE=
1372 case $canonical in
1373  alpha*)
1374   AC_CHECK_DECL([__ELF__])
1375   if test "$ac_cv_have_decl___ELF__" = "yes"; then
1376     ## With ELF, make sure that all common symbols get allocated to in the
1377     ## data section.  Otherwise, the dump of temacs may miss variables in
1378     ## the shared library that have been initialized.  For example, with
1379     ## GNU libc, __malloc_initialized would normally be resolved to the
1380     ## shared library's .bss section, which is fatal.
1381     if test "x$GCC" = "xyes"; then
1382       C_SWITCH_MACHINE="-fno-common"
1383     else
1384       AC_MSG_ERROR([Non-GCC compilers are not supported.])
1385     fi
1386   else
1387       dnl This was the unexalpha.c case.  Removed in 24.1, 2010-07-24,
1388       dnl albeit under the mistaken assumption that said file
1389       dnl was no longer used.
1390       AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1391   fi
1392   ;;
1393 esac
1394 AC_SUBST(C_SWITCH_MACHINE)
1395
1396 AC_SUBST(UNEXEC_OBJ)
1397
1398 C_SWITCH_SYSTEM=
1399 ## Some programs in src produce warnings saying certain subprograms
1400 ## are too complex and need a MAXMEM value greater than 2000 for
1401 ## additional optimization.  --nils@exp-math.uni-essen.de
1402 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1403   C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1404 if test "$opsys" = "mingw32"; then
1405   case "$canonical" in
1406     x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1407     *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1408   esac
1409 fi
1410 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1411 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1412 AC_SUBST(C_SWITCH_SYSTEM)
1413
1414
1415 LIBS_SYSTEM=
1416 case "$opsys" in
1417   ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1418   aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1419
1420   freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1421
1422   hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1423
1424   sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1425
1426   ## Motif needs -lgen.
1427   unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1428 esac
1429
1430 AC_SUBST(LIBS_SYSTEM)
1431
1432 ### Make sure subsequent tests use flags consistent with the build flags.
1433
1434 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1435   CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1436 else
1437   CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1438 fi
1439
1440 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1441 AC_DEFUN([AC_TYPE_SIZE_T])
1442 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1443 AC_DEFUN([AC_TYPE_UID_T])
1444
1445 # sqrt and other floating-point functions such as fmod and frexp
1446 # are found in -lm on many systems.
1447 OLD_LIBS=$LIBS
1448 AC_SEARCH_LIBS([sqrt], [m])
1449 if test "X$LIBS" = "X$OLD_LIBS"; then
1450   LIB_MATH=
1451 else
1452   LIB_MATH=$ac_cv_search_sqrt
1453 fi
1454 LIBS=$OLD_LIBS
1455
1456 dnl Current possibilities handled by sed (aix4-2 -> aix,
1457 dnl gnu-linux -> gnu/linux, etc.):
1458 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux, irix.
1459 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1460 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1461
1462 case $opsys in
1463   cygwin )
1464     LIB_MATH=
1465     ;;
1466   darwin )
1467     ## Adding -lm confuses the dynamic linker, so omit it.
1468     LIB_MATH=
1469     ;;
1470   freebsd | dragonfly )
1471     SYSTEM_TYPE=berkeley-unix
1472     ;;
1473   gnu-linux | gnu-kfreebsd )
1474     ;;
1475   hpux10-20 | hpux11 )
1476     ;;
1477   mingw32 )
1478     LIB_MATH=
1479     SYSTEM_TYPE=windows-nt
1480     ;;
1481   dnl NB this may be adjusted below.
1482   netbsd | openbsd )
1483     SYSTEM_TYPE=berkeley-unix
1484     ;;
1485
1486   sol2* | unixware )
1487     SYSTEM_TYPE=usg-unix-v
1488     ;;
1489
1490 esac
1491
1492 AC_SUBST(LIB_MATH)
1493 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1494   [The type of system you are compiling for; sets 'system-type'.])
1495
1496
1497 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1498 pre_PKG_CONFIG_LIBS=$LIBS
1499
1500 PKG_PROG_PKG_CONFIG(0.9.0)
1501
1502 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1503 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1504 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1505 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1506 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1507 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1508 dnl actions.
1509 AC_DEFUN([EMACS_CHECK_MODULES],
1510   [PKG_CHECK_MODULES([$1], [$2],
1511      [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1512       m4_default([$3], [HAVE_$1=yes])],
1513      [m4_default([$4], [HAVE_$1=no])])])
1514
1515 HAVE_SOUND=no
1516 if test "${with_sound}" != "no"; then
1517   # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1518   AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1519     have_sound_header=yes, [], [
1520     #ifdef __MINGW32__
1521     #define WIN32_LEAN_AND_MEAN
1522     #include <windows.h>
1523     #endif
1524     ])
1525   test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1526     AC_MSG_ERROR([OSS sound support requested but not found.])
1527
1528   if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1529     # Emulation library used on NetBSD.
1530     AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1531     test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1532       AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1533     dnl FIXME?  If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1534     dnl Traditionally, we go on to check for alsa too.  Does that make sense?
1535   fi
1536   AC_SUBST(LIBSOUND)
1537
1538   if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1539     ALSA_REQUIRED=1.0.0
1540     ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1541     EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1542     if test $HAVE_ALSA = yes; then
1543       SAVE_CFLAGS="$CFLAGS"
1544       SAVE_LIBS="$LIBS"
1545       CFLAGS="$ALSA_CFLAGS $CFLAGS"
1546       LIBS="$ALSA_LIBS $LIBS"
1547       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1548                       emacs_alsa_normal=yes,
1549                     emacs_alsa_normal=no)
1550       if test "$emacs_alsa_normal" != yes; then
1551         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1552                        [[snd_lib_error_set_handler (0);]])],
1553                        emacs_alsa_subdir=yes,
1554                      emacs_alsa_subdir=no)
1555         if test "$emacs_alsa_subdir" != yes; then
1556           AC_MSG_ERROR([pkg-config found alsa, but it does not compile.  See config.log for error messages.])
1557         fi
1558         ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1559       fi
1560
1561       CFLAGS="$SAVE_CFLAGS"
1562       LIBS="$SAVE_LIBS"
1563       LIBSOUND="$LIBSOUND $ALSA_LIBS"
1564       CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1565       AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1566     elif test "${with_sound}" = "alsa"; then
1567       AC_MSG_ERROR([ALSA sound support requested but not found.])
1568     fi
1569   fi                            dnl with_sound = alsa|yes
1570
1571   dnl Define HAVE_SOUND if we have sound support.  We know it works and
1572   dnl compiles only on the specified platforms.  For others, it
1573   dnl probably doesn't make sense to try.
1574   dnl FIXME So surely we should bypass this whole section if not using
1575   dnl one of these platforms?
1576   if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1577      case "$opsys" in
1578        dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1579        dnl Adjust the --with-sound help text if you change this.
1580        gnu-linux|freebsd|netbsd|mingw32|cygwin)
1581          AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1582          HAVE_SOUND=yes
1583          ;;
1584      esac
1585   fi
1586
1587   AC_SUBST(CFLAGS_SOUND)
1588 fi
1589
1590 dnl checks for header files
1591 AC_CHECK_HEADERS_ONCE(
1592   sys/systeminfo.h
1593   sys/sysinfo.h
1594   coff.h pty.h
1595   sys/resource.h
1596   sys/utsname.h pwd.h utmp.h util.h)
1597
1598 AC_MSG_CHECKING(if personality LINUX32 can be set)
1599 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/personality.h>]], [[personality (PER_LINUX32)]])],
1600                emacs_cv_personality_linux32=yes,
1601                emacs_cv_personality_linux32=no)
1602 AC_MSG_RESULT($emacs_cv_personality_linux32)
1603
1604 if test $emacs_cv_personality_linux32 = yes; then
1605   AC_DEFINE(HAVE_PERSONALITY_LINUX32, 1,
1606             [Define to 1 if personality LINUX32 can be set.])
1607 fi
1608
1609 # Note that Solaris has sys/sysinfo.h which defines struct
1610 # sysinfo as well.  To make sure that we're using GNU/Linux
1611 # sysinfo, we explicitly set one of its fields.
1612 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1613   AC_MSG_CHECKING([if Linux sysinfo may be used])
1614   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1615                                      [[struct sysinfo si;
1616                                        si.totalram = 0;
1617                                        sysinfo (&si)]])],
1618     emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)
1619   AC_MSG_RESULT($emacs_cv_linux_sysinfo)
1620   if test $emacs_cv_linux_sysinfo = yes; then
1621     AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1622     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1623                                        [[struct sysinfo si; return si.mem_unit]])],
1624       AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1625                 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1626   fi
1627 fi
1628
1629 dnl On Solaris 8 there's a compilation warning for term.h because
1630 dnl it doesn't define 'bool'.
1631 AC_CHECK_HEADERS(term.h, , , -)
1632 AC_HEADER_TIME
1633 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1634                                       ]])
1635 if test $ac_cv_have_decl_sys_siglist != yes; then
1636   # For Tru64, at least:
1637   AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1638                                           ]])
1639 fi
1640 AC_HEADER_SYS_WAIT
1641
1642 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1643 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1644 #if HAVE_SYS_SOCKET_H
1645 #include <sys/socket.h>
1646 #endif])
1647 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1648 #if HAVE_SYS_SOCKET_H
1649 #include <sys/socket.h>
1650 #endif])
1651 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1652 #if HAVE_SYS_SOCKET_H
1653 #include <sys/socket.h>
1654 #endif])
1655
1656 dnl checks for structure members
1657 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1658                   struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1659                   struct ifreq.ifr_addr,
1660                   struct ifreq.ifr_addr.sa_len], , ,
1661                  [AC_INCLUDES_DEFAULT
1662 #if HAVE_SYS_SOCKET_H
1663 #include <sys/socket.h>
1664 #endif
1665 #if HAVE_NET_IF_H
1666 #include <net/if.h>
1667 #endif])
1668
1669 dnl Check for endianness.
1670 dnl AC_C_BIGENDIAN is done by gnulib.
1671
1672 dnl check for Make feature
1673
1674 AUTO_DEPEND=no
1675 dnl check if we have GCC and autodepend is on.
1676 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1677    AC_MSG_CHECKING([whether gcc understands -MMD -MF])
1678    SAVE_CFLAGS="$CFLAGS"
1679    CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1680    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], , ac_enable_autodepend=no)
1681    CFLAGS="$SAVE_CFLAGS"
1682    test -f deps.d || ac_enable_autodepend=no
1683    rm -rf deps.d
1684    AC_MSG_RESULT([$ac_enable_autodepend])
1685    if test $ac_enable_autodepend = yes; then
1686       AUTO_DEPEND=yes
1687    fi
1688 fi
1689 AC_SUBST(AUTO_DEPEND)
1690
1691 dnl checks for operating system services
1692 AC_SYS_LONG_FILE_NAMES
1693
1694 #### Choose a window system.
1695
1696 ## We leave window_system equal to none if
1697 ## we end up building without one.  Any new window system should
1698 ## set window_system to an appropriate value and add objects to
1699 ## window-system-specific substs.
1700
1701 window_system=none
1702 AC_PATH_X
1703 if test "$no_x" != yes; then
1704   window_system=x11
1705 fi
1706
1707 LD_SWITCH_X_SITE_RPATH=
1708 if test "${x_libraries}" != NONE; then
1709   if test -n "${x_libraries}"; then
1710     LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1711     LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1712       AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1713     `
1714   fi
1715   x_default_search_path=""
1716   x_search_path=${x_libraries}
1717   if test -z "${x_search_path}"; then
1718     x_search_path=/usr/lib
1719   fi
1720   for x_library in `AS_ECHO(["$x_search_path:"]) | \
1721                     sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1722     x_search_path="\
1723 ${x_library}/X11/%L/%T/%N%C%S:\
1724 ${x_library}/X11/%l/%T/%N%C%S:\
1725 ${x_library}/X11/%T/%N%C%S:\
1726 ${x_library}/X11/%L/%T/%N%S:\
1727 ${x_library}/X11/%l/%T/%N%S:\
1728 ${x_library}/X11/%T/%N%S"
1729     if test x"${x_default_search_path}" = x; then
1730       x_default_search_path=${x_search_path}
1731     else
1732       x_default_search_path="${x_search_path}:${x_default_search_path}"
1733     fi
1734   done
1735 fi
1736 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1737
1738 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1739   C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1740 fi
1741
1742 if test x"${x_includes}" = x; then
1743   bitmapdir=/usr/include/X11/bitmaps
1744 else
1745   # accumulate include directories that have X11 bitmap subdirectories
1746   bmd_acc=
1747   for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1748     if test -d "${bmd}/X11/bitmaps"; then
1749       bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1750     fi
1751     if test -d "${bmd}/bitmaps"; then
1752       bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1753     fi
1754   done
1755   bitmapdir=${bmd_acc#:}
1756 fi
1757
1758 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1759 HAVE_NS=no
1760 NS_GNUSTEP_CONFIG=no
1761 NS_IMPL_COCOA=no
1762 NS_IMPL_GNUSTEP=no
1763 tmp_CPPFLAGS="$CPPFLAGS"
1764 tmp_CFLAGS="$CFLAGS"
1765 CPPFLAGS="$CPPFLAGS -x objective-c"
1766 CFLAGS="$CFLAGS -x objective-c"
1767 GNU_OBJC_CFLAGS=
1768 LIBS_GNUSTEP=
1769 if test "${with_ns}" != no; then
1770   if test "${opsys}" = darwin; then
1771      NS_IMPL_COCOA=yes
1772      ns_appdir=`pwd`/nextstep/Emacs.app
1773      ns_appbindir=${ns_appdir}/Contents/MacOS
1774      ns_appresdir=${ns_appdir}/Contents/Resources
1775      ns_appsrc=Cocoa/Emacs.base
1776      ns_fontfile=macfont.o
1777   elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1778      NS_IMPL_GNUSTEP=yes
1779      NS_GNUSTEP_CONFIG=yes
1780      GNU_OBJC_CFLAGS=$flags
1781      LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1782   elif test -f $GNUSTEP_CONFIG_FILE; then
1783      NS_IMPL_GNUSTEP=yes
1784      dnl FIXME sourcing this several times in subshells seems inefficient.
1785      GNUSTEP_SYSTEM_HEADERS=$(
1786        . $GNUSTEP_CONFIG_FILE
1787        AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1788      )
1789      GNUSTEP_SYSTEM_LIBRARIES=$(
1790        . $GNUSTEP_CONFIG_FILE
1791        AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1792      )
1793      dnl I seemed to need these as well with GNUstep-startup 0.25.
1794      GNUSTEP_LOCAL_HEADERS=$(
1795        . $GNUSTEP_CONFIG_FILE
1796        AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1797      )
1798      GNUSTEP_LOCAL_LIBRARIES=$(
1799        . $GNUSTEP_CONFIG_FILE
1800        AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1801      )
1802      test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1803        GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1804      test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1805        GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1806      CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1807      CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1808      LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1809      LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1810      dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1811      dnl If they had chosen to either define it or not, we could have
1812      dnl just used AC_CHECK_DECL here.
1813      AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1814        emacs_cv_objc_exceptions,
1815 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1816 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1817 1;
1818 #else
1819 fail;
1820 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1821      if test $emacs_cv_objc_exceptions = yes; then
1822        dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1823        AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1824          [Define if GNUstep uses ObjC exceptions.])
1825        GNU_OBJC_CFLAGS="-fobjc-exceptions"
1826      fi
1827   fi
1828   if test $NS_IMPL_GNUSTEP = yes; then
1829      ns_appdir=`pwd`/nextstep/Emacs.app
1830      ns_appbindir=${ns_appdir}
1831      ns_appresdir=${ns_appdir}/Resources
1832      ns_appsrc=GNUstep/Emacs.base
1833      ns_fontfile=nsfont.o
1834   fi
1835
1836   dnl This is only used while we test the NS headers, it gets reset below.
1837   CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1838   CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1839
1840   AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1841                   [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1842 are required for a Nextstep build are missing or cannot be compiled.
1843 Either fix this, or re-configure with the option '--without-ns'.])])
1844
1845   macfont_file=""
1846   if test "${NS_IMPL_COCOA}" = "yes"; then
1847     AC_MSG_CHECKING([for OSX 10.6 or newer])
1848     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1849                                      [
1850 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1851 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1852  ; /* OK */
1853 #else
1854  error "OSX 10.6 or newer required";
1855 #endif
1856 #endif
1857                     ])],
1858                     ns_osx_have_106=yes,
1859                     ns_osx_have_106=no)
1860     AC_MSG_RESULT([$ns_osx_have_106])
1861
1862     if test $ns_osx_have_106 = no; then
1863        AC_MSG_ERROR([OSX 10.6 or newer is required]);
1864     fi
1865   fi
1866 fi
1867
1868 AC_SUBST(LIBS_GNUSTEP)
1869
1870 INSTALL_ARCH_INDEP_EXTRA=install-etc
1871 ns_self_contained=no
1872 NS_OBJ=
1873 NS_OBJC_OBJ=
1874 if test "${HAVE_NS}" = yes; then
1875   if test "$with_toolkit_scroll_bars" = "no"; then
1876     AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1877   fi
1878
1879   window_system=nextstep
1880   # set up packaging dirs
1881   if test "${EN_NS_SELF_CONTAINED}" = yes; then
1882      ns_self_contained=yes
1883      prefix=${ns_appresdir}
1884      exec_prefix=${ns_appbindir}
1885      dnl This one isn't really used, only archlibdir is.
1886      libexecdir="\${ns_appbindir}/libexec"
1887      archlibdir="\${ns_appbindir}/libexec"
1888      etcdocdir="\${ns_appresdir}/etc"
1889      etcdir="\${ns_appresdir}/etc"
1890      dnl FIXME maybe set datarootdir instead.
1891      dnl That would also get applications, icons, man.
1892      infodir="\${ns_appresdir}/info"
1893      mandir="\${ns_appresdir}/man"
1894      lispdir="\${ns_appresdir}/lisp"
1895      test "$locallisppathset" = no && locallisppath=""
1896      INSTALL_ARCH_INDEP_EXTRA=
1897   fi
1898
1899   NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1900 fi
1901 CFLAGS="$tmp_CFLAGS"
1902 CPPFLAGS="$tmp_CPPFLAGS"
1903 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1904 AC_SUBST(ns_self_contained)
1905 AC_SUBST(NS_OBJ)
1906 AC_SUBST(NS_OBJC_OBJ)
1907
1908 HAVE_W32=no
1909 W32_OBJ=
1910 W32_LIBS=
1911 EMACSRES=
1912 CLIENTRES=
1913 CLIENTW=
1914 W32_RES_LINK=
1915 EMACS_MANIFEST=
1916 UPDATE_MANIFEST=
1917 if test "${with_w32}" != no; then
1918   case "${opsys}" in
1919     cygwin)
1920       AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
1921              [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
1922                    cannot be found.])])
1923     ;;
1924     mingw32)
1925     ## Using --with-w32 with MinGW is a no-op, but we allow it.
1926     ;;
1927     *)
1928       AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
1929     ;;
1930   esac
1931 fi
1932
1933 if test "${opsys}" = "mingw32"; then
1934   AC_MSG_CHECKING([whether Windows API headers are recent enough])
1935   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1936      #include <windows.h>
1937      #include <usp10.h>]],
1938    [[PIMAGE_NT_HEADERS pHeader;
1939      PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
1940    [emacs_cv_w32api=yes
1941     HAVE_W32=yes],
1942    emacs_cv_w32api=no)
1943   AC_MSG_RESULT($emacs_cv_w32api)
1944   if test "${emacs_cv_w32api}" = "no"; then
1945     AC_MSG_ERROR([the Windows API headers are too old to support this build.])
1946   fi
1947 fi
1948
1949 FIRSTFILE_OBJ=
1950 NTDIR=
1951 LIBS_ECLIENT=
1952 LIB_WSOCK32=
1953 NTLIB=
1954 CM_OBJ="cm.o"
1955 XARGS_LIMIT=
1956 if test "${HAVE_W32}" = "yes"; then
1957   AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
1958   if test "$with_toolkit_scroll_bars" = "no"; then
1959     AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
1960   fi
1961   AC_CHECK_TOOL(WINDRES, [windres],
1962                 [AC_MSG_ERROR([No resource compiler found.])])
1963   W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
1964   W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
1965   EMACSRES="emacs.res"
1966   case "$canonical" in
1967     x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
1968     *) EMACS_MANIFEST="emacs-x86.manifest" ;;
1969   esac
1970   dnl Construct something of the form "24,4,0,0" with 4 components.
1971   comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
1972
1973   comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
1974   AC_SUBST(comma_version)
1975   AC_SUBST(comma_space_version)
1976   AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
1977   if test "${opsys}" = "cygwin"; then
1978     W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lgdi32 -lole32 -lcomdlg32"
1979     W32_LIBS="$W32_LIBS -lusp10 -lcomctl32 -lwinspool"
1980     # Tell the linker that emacs.res is an object (which we compile from
1981     # the rc file), not a linker script.
1982     W32_RES_LINK="-Wl,emacs.res"
1983   else
1984     UPDATE_MANIFEST=update-game-score.exe.manifest
1985     W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
1986     W32_LIBS="$W32_LIBS -lwinmm -lgdi32 -lcomdlg32"
1987     W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32 -lusp10"
1988     W32_RES_LINK="\$(EMACSRES)"
1989     CLIENTRES="emacsclient.res"
1990     CLIENTW="emacsclientw\$(EXEEXT)"
1991     FIRSTFILE_OBJ=firstfile.o
1992     NTDIR=nt
1993     CM_OBJ=
1994     LIBS_ECLIENT="-lcomctl32"
1995     LIB_WSOCK32="-lwsock32"
1996     NTLIB="ntlib.$ac_objext"
1997     XARGS_LIMIT="-s 10000"
1998   fi
1999 fi
2000 AC_SUBST(W32_OBJ)
2001 AC_SUBST(W32_LIBS)
2002 AC_SUBST(EMACSRES)
2003 AC_SUBST(EMACS_MANIFEST)
2004 AC_SUBST(UPDATE_MANIFEST)
2005 AC_SUBST(CLIENTRES)
2006 AC_SUBST(CLIENTW)
2007 AC_SUBST(W32_RES_LINK)
2008 AC_SUBST(FIRSTFILE_OBJ)
2009 AC_SUBST(NTDIR)
2010 AC_SUBST(CM_OBJ)
2011 AC_SUBST(LIBS_ECLIENT)
2012 AC_SUBST(LIB_WSOCK32)
2013 AC_SUBST(NTLIB)
2014 AC_SUBST(XARGS_LIMIT)
2015
2016 if test "${HAVE_W32}" = "yes"; then
2017   window_system=w32
2018   with_xft=no
2019 fi
2020
2021 ## $window_system is now set to the window system we will
2022 ## ultimately use.
2023
2024 if test "$window_system" = none && test "$gl_gcc_warnings" = yes; then
2025    # Too many warnings for now.
2026    nw=
2027    nw="$nw -Wsuggest-attribute=noreturn"
2028    gl_MANYWARN_COMPLEMENT([WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
2029
2030    gl_WARN_ADD([-Wno-unused-variable])
2031    gl_WARN_ADD([-Wno-unused-but-set-variable])
2032    gl_WARN_ADD([-Wno-unused-but-set-parameter])
2033 fi
2034
2035 term_header=
2036 HAVE_X_WINDOWS=no
2037 HAVE_X11=no
2038 USE_X_TOOLKIT=none
2039
2040 case "${window_system}" in
2041   x11 )
2042     HAVE_X_WINDOWS=yes
2043     HAVE_X11=yes
2044     term_header=xterm.h
2045     case "${with_x_toolkit}" in
2046       athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2047       motif ) USE_X_TOOLKIT=MOTIF ;;
2048       gtk ) with_gtk=yes
2049             term_header=gtkutil.h
2050 dnl Don't set this for GTK.  A lot of tests below assumes Xt when
2051 dnl USE_X_TOOLKIT is set.
2052             USE_X_TOOLKIT=none ;;
2053       gtk2 ) with_gtk2=yes
2054              term_header=gtkutil.h
2055              USE_X_TOOLKIT=none ;;
2056       gtk3 ) with_gtk3=yes
2057              term_header=gtkutil.h
2058              USE_X_TOOLKIT=none ;;
2059       no ) USE_X_TOOLKIT=none ;;
2060 dnl If user did not say whether to use a toolkit, make this decision later:
2061 dnl use the toolkit if we have gtk, or X11R5 or newer.
2062       * ) USE_X_TOOLKIT=maybe ;;
2063     esac
2064   ;;
2065   nextstep )
2066     term_header=nsterm.h
2067   ;;
2068   w32 )
2069     term_header=w32term.h
2070   ;;
2071 esac
2072
2073 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2074    AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2075    if test "$HAVE_XSERVER" = true ||
2076       test -n "$DISPLAY" ||
2077       {
2078         for emacs_libX11 in /usr/lib/libX11.*; do break; done
2079         test "$emacs_libX11" != '/usr/lib/libX11.*'
2080       }
2081    then
2082         AC_MSG_ERROR([You seem to be running X, but no X development libraries
2083 were found.  You should install the relevant development files for X
2084 and for the toolkit you want, such as Gtk+ or Motif.  Also make
2085 sure you have development files for image handling, i.e.
2086 tiff, gif, jpeg, png and xpm.
2087 If you are sure you want Emacs compiled without X window support, pass
2088   --without-x
2089 to configure.])
2090    fi
2091 fi
2092
2093 # Does the opsystem file prohibit the use of the GNU malloc?
2094 # Assume not, until told otherwise.
2095 GNU_MALLOC=yes
2096
2097 AC_CACHE_CHECK(
2098   [whether malloc is Doug Lea style],
2099   [emacs_cv_var_doug_lea_malloc],
2100   [emacs_cv_var_doug_lea_malloc=no
2101    dnl Hooks do not work with address sanitization.
2102    if test "$emacs_cv_sanitize_address" != yes; then
2103      AC_LINK_IFELSE(
2104        [AC_LANG_PROGRAM(
2105           [[#include <malloc.h>
2106             static void hook (void) {}]],
2107           [[malloc_set_state (malloc_get_state ());
2108             __after_morecore_hook = hook;
2109             __malloc_initialize_hook = hook;]])],
2110        [emacs_cv_var_doug_lea_malloc=yes])
2111    fi])
2112 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2113
2114 system_malloc=$emacs_cv_sanitize_address
2115
2116 hybrid_malloc=
2117
2118 case "$opsys" in
2119   ## darwin ld insists on the use of malloc routines in the System framework.
2120   darwin | mingw32 | nacl | sol2-10) system_malloc=yes ;;
2121   cygwin) hybrid_malloc=yes;;
2122 esac
2123
2124 GMALLOC_OBJ=
2125 if test "${system_malloc}" = "yes"; then
2126   AC_DEFINE([SYSTEM_MALLOC], 1,
2127     [Define to 1 to use the system memory allocator, even if it is not
2128      Doug Lea style.])
2129   GNU_MALLOC=no
2130   GNU_MALLOC_reason="
2131     (The GNU allocators don't work with this system configuration.)"
2132   VMLIMIT_OBJ=
2133 elif test "$hybrid_malloc" = yes; then
2134   AC_DEFINE(HYBRID_MALLOC, 1,
2135     [Define to use gmalloc before dumping and the system malloc after.])
2136   GNU_MALLOC=
2137   GNU_MALLOC_reason="only before dumping"
2138   GMALLOC_OBJ=gmalloc.o
2139   VMLIMIT_OBJ=
2140 else
2141   test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2142   VMLIMIT_OBJ=vm-limit.o
2143
2144   AC_CHECK_HEADERS([sys/vlimit.h])
2145   AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2146     [AC_LINK_IFELSE(
2147        [AC_LANG_PROGRAM(
2148          [[extern char data_start[]; char ch;]],
2149          [[return data_start < &ch;]])],
2150        [emacs_cv_data_start=yes],
2151        [emacs_cv_data_start=no])])
2152   if test $emacs_cv_data_start = yes; then
2153     AC_DEFINE([HAVE_DATA_START], 1,
2154       [Define to 1 if data_start is the address of the start
2155        of the main data segment.])
2156   fi
2157 fi
2158 AC_SUBST(GMALLOC_OBJ)
2159 AC_SUBST(VMLIMIT_OBJ)
2160
2161 if test "$doug_lea_malloc" = "yes" ; then
2162   if test "$GNU_MALLOC" = yes ; then
2163     GNU_MALLOC_reason="
2164       (Using Doug Lea's new malloc from the GNU C Library.)"
2165   fi
2166   AC_DEFINE(DOUG_LEA_MALLOC, 1,
2167     [Define to 1 if the system memory allocator is Doug Lea style,
2168      with malloc hooks and malloc_set_state.])
2169
2170   ## Use mmap directly for allocating larger buffers.
2171   ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2172   ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2173   ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2174   case "$opsys" in
2175     mingw32|gnu*) REL_ALLOC=no ;;
2176   esac
2177 fi
2178
2179 if test x"${REL_ALLOC}" = x; then
2180   REL_ALLOC=${GNU_MALLOC}
2181 fi
2182
2183 use_mmap_for_buffers=no
2184 case "$opsys" in
2185   cygwin|mingw32|freebsd|irix6-5) use_mmap_for_buffers=yes ;;
2186 esac
2187
2188 AC_FUNC_MMAP
2189 if test $use_mmap_for_buffers = yes; then
2190   AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2191   REL_ALLOC=no
2192 fi
2193
2194 LIBS="$LIBS_SYSTEM $LIBS"
2195
2196 dnl FIXME replace main with a function we actually want from this library.
2197 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2198
2199 dnl Check for the POSIX thread library.
2200 LIB_PTHREAD=
2201 AC_CHECK_HEADERS_ONCE(pthread.h)
2202 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2203   AC_CACHE_CHECK([for pthread library],
2204     [emacs_cv_pthread_lib],
2205     [emacs_cv_pthread_lib=no
2206      OLD_LIBS=$LIBS
2207      for emacs_pthread_lib in 'none needed' -lpthread; do
2208        case $emacs_pthread_lib in
2209          -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2210        esac
2211        AC_LINK_IFELSE(
2212          [AC_LANG_PROGRAM(
2213             [[#include <pthread.h>
2214               #include <signal.h>
2215               sigset_t old_mask, new_mask;
2216               void noop (void) {}]],
2217             [[pthread_t th = pthread_self ();
2218               int status = 0;
2219               status += pthread_create (&th, 0, 0, 0);
2220               status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2221               status += pthread_kill (th, 0);
2222               #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2223                      || defined DOUG_LEA_MALLOC)
2224               /* Test for pthread_atfork only if gmalloc uses it,
2225                  as older-style hosts like MirBSD 10 lack it.  */
2226               status += pthread_atfork (noop, noop, noop);
2227               #endif
2228               return status;]])],
2229          [emacs_cv_pthread_lib=$emacs_pthread_lib])
2230        LIBS=$OLD_LIBS
2231        if test "$emacs_cv_pthread_lib" != no; then
2232          break
2233        fi
2234      done])
2235   if test "$emacs_cv_pthread_lib" != no; then
2236     AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2237     case $emacs_cv_pthread_lib in
2238       -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2239     esac
2240     ac_cv_func_pthread_sigmask=yes
2241     # Some systems optimize for single-threaded programs by default, and
2242     # need special flags to disable these optimizations. For example, the
2243     # definition of 'errno' in <errno.h>.
2244     case $opsys in
2245       hpux* | sol*)
2246         AC_DEFINE([_REENTRANT], 1,
2247           [Define to 1 if your system requires this in multithreaded code.]);;
2248       aix4-2)
2249         AC_DEFINE([_THREAD_SAFE], 1,
2250           [Define to 1 if your system requires this in multithreaded code.]);;
2251     esac
2252   fi
2253 fi
2254 AC_SUBST([LIB_PTHREAD])
2255
2256 dnl Check for need for bigtoc support on IBM AIX
2257
2258 case ${host_os} in
2259 aix*)
2260   AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2261     case $GCC in
2262     yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2263     *) gdb_cv_bigtoc=-bbigtoc ;;
2264     esac
2265
2266     LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2267     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2268   ])
2269   ;;
2270 esac
2271
2272 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2273 # is for the tests that follow.  We set them back later on.
2274
2275 REAL_CFLAGS="$CFLAGS"
2276 REAL_CPPFLAGS="$CPPFLAGS"
2277 REAL_LIBS="$LIBS"
2278
2279 if test "${HAVE_X11}" = "yes"; then
2280   DEFS="$C_SWITCH_X_SITE $DEFS"
2281   LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2282   LIBS="-lX11 $LIBS"
2283   CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2284   CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2285
2286   # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2287   # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2288   # but it's more convenient here to set LD_RUN_PATH since this
2289   # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2290   if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2291     LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2292     export LD_RUN_PATH
2293   fi
2294
2295   if test "${opsys}" = "gnu-linux"; then
2296     AC_MSG_CHECKING(whether X on GNU/Linux needs -b to link)
2297     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2298      [[XOpenDisplay ("foo");]])],
2299      [xgnu_linux_first_failure=no],
2300      [xgnu_linux_first_failure=yes])
2301     if test "${xgnu_linux_first_failure}" = "yes"; then
2302       OLD_CPPFLAGS="$CPPFLAGS"
2303       OLD_LIBS="$LIBS"
2304       CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2305       LIBS="$LIBS -b i486-linuxaout"
2306       AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2307        [[XOpenDisplay ("foo");]])],
2308        [xgnu_linux_second_failure=no],
2309        [xgnu_linux_second_failure=yes])
2310       if test "${xgnu_linux_second_failure}" = "yes"; then
2311         # If we get the same failure with -b, there is no use adding -b.
2312         # So leave it out.  This plays safe.
2313         AC_MSG_RESULT(no)
2314       else
2315         LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2316         C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2317         AC_MSG_RESULT(yes)
2318       fi
2319       CPPFLAGS=$OLD_CPPFLAGS
2320       LIBS=$OLD_LIBS
2321     else
2322       AC_MSG_RESULT(no)
2323     fi
2324   fi
2325
2326   # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2327   # header files included from there.
2328   AC_MSG_CHECKING(for Xkb)
2329   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2330 #include <X11/XKBlib.h>]],
2331         [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2332         emacs_xkb=yes, emacs_xkb=no)
2333   AC_MSG_RESULT($emacs_xkb)
2334   if test $emacs_xkb = yes; then
2335     AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2336   fi
2337
2338   AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2339 XScreenNumberOfScreen)
2340 fi
2341
2342 if test "${window_system}" = "x11"; then
2343   AC_MSG_CHECKING(X11 version 6)
2344   AC_CACHE_VAL(emacs_cv_x11_version_6,
2345   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2346 [[#if XlibSpecificationRelease < 6
2347 fail;
2348 #endif
2349 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2350   if test $emacs_cv_x11_version_6 = yes; then
2351     AC_MSG_RESULT(6 or newer)
2352     AC_DEFINE(HAVE_X11R6, 1,
2353               [Define to 1 if you have the X11R6 or newer version of Xlib.])
2354     AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2355     ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2356     ## XIM support.
2357     case "$opsys" in
2358       sol2-*) : ;;
2359       *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2360            [Define if you have usable X11R6-style XIM support.])
2361          ;;
2362     esac
2363   else
2364     AC_MSG_RESULT(before 6)
2365   fi
2366 fi
2367
2368
2369 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2370 HAVE_RSVG=no
2371 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2372   if test "${with_rsvg}" != "no"; then
2373     RSVG_REQUIRED=2.11.0
2374     RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2375
2376     EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2377     AC_SUBST(RSVG_CFLAGS)
2378     AC_SUBST(RSVG_LIBS)
2379
2380     if test $HAVE_RSVG = yes; then
2381       AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2382       CFLAGS="$CFLAGS $RSVG_CFLAGS"
2383       # Windows loads librsvg dynamically
2384       if test "${opsys}" = "mingw32"; then
2385         RSVG_LIBS=
2386       fi
2387     fi
2388   fi
2389 fi
2390
2391 HAVE_IMAGEMAGICK=no
2392 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2393   if test "${with_imagemagick}" != "no"; then
2394     ## 6.3.5 is the earliest version known to work; see Bug#17339.
2395     ## 6.8.2 makes Emacs crash; see Bug#13867.
2396     IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2"
2397     EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2398     AC_SUBST(IMAGEMAGICK_CFLAGS)
2399     AC_SUBST(IMAGEMAGICK_LIBS)
2400
2401     if test $HAVE_IMAGEMAGICK = yes; then
2402       AC_DEFINE(HAVE_IMAGEMAGICK, 1, [Define to 1 if using imagemagick.])
2403       OLD_CFLAGS=$CFLAGS
2404       OLD_LIBS=$LIBS
2405       CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2406       LIBS="$IMAGEMAGICK_LIBS $LIBS"
2407       AC_CHECK_FUNCS(MagickExportImagePixels MagickMergeImageLayers)
2408       CFLAGS=$OLD_CFLAGS
2409       LIBS=$OLD_LIBS
2410     fi
2411   fi
2412 fi
2413
2414
2415 HAVE_GTK=no
2416 GTK_OBJ=
2417 gtk_term_header=$term_header
2418 check_gtk2=no
2419 gtk3_pkg_errors=
2420 if test "${opsys}" != "mingw32"; then
2421   if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2422     GLIB_REQUIRED=2.28
2423     GTK_REQUIRED=3.0
2424     GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2425
2426     dnl Checks for libraries.
2427     EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2428       [pkg_check_gtk=yes], [pkg_check_gtk=no])
2429     if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2430        AC_MSG_ERROR($GTK_PKG_ERRORS)
2431     fi
2432     if test "$pkg_check_gtk" = "yes"; then
2433        AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2434        GTK_OBJ=emacsgtkfixed.o
2435        gtk_term_header=gtkutil.h
2436        USE_GTK_TOOLKIT="GTK3"
2437        if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2438          AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2439            [Define to 1 to disable GTK+/GDK deprecation warnings.])
2440          AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2441            [Define to 1 to disable Glib deprecation warnings.])
2442        fi
2443     else
2444        check_gtk2=yes
2445        gtk3_pkg_errors="$GTK_PKG_ERRORS "
2446     fi
2447   fi
2448
2449   if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2450     GLIB_REQUIRED=2.10
2451     GTK_REQUIRED=2.10
2452     GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2453
2454     dnl Checks for libraries.
2455     EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2456       [pkg_check_gtk=yes], [pkg_check_gtk=no])
2457     if test "$pkg_check_gtk" = "no" &&
2458        { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2459     then
2460       AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2461     fi
2462     test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2463   fi
2464 fi
2465
2466 OLD_CFLAGS=$CFLAGS
2467 OLD_LIBS=$LIBS
2468
2469 if test x"$pkg_check_gtk" = xyes; then
2470
2471   AC_SUBST(GTK_LIBS)
2472   CFLAGS="$CFLAGS $GTK_CFLAGS"
2473   LIBS="$GTK_LIBS $LIBS"
2474   dnl Try to compile a simple GTK program.
2475   AC_MSG_CHECKING([whether GTK compiles])
2476   GTK_COMPILES=no
2477   AC_LINK_IFELSE(
2478     [AC_LANG_PROGRAM(
2479        [[/* Check the Gtk and Glib APIs.  */
2480          #include <gtk/gtk.h>
2481          #include <glib-object.h>
2482          static void
2483          callback (GObject *go, GParamSpec *spec, gpointer user_data)
2484          {}
2485        ]],
2486        [[
2487          GtkSettings *gs = 0;
2488          /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2489             strict C prohibits this.  Use gtk_main_iteration to test that the
2490             libraries are there.  */
2491          if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2492                                     0, 0, 0, G_CALLBACK (callback), 0))
2493            gtk_main_iteration ();
2494        ]])],
2495     [GTK_COMPILES=yes])
2496   AC_MSG_RESULT([$GTK_COMPILES])
2497   if test "${GTK_COMPILES}" != "yes"; then
2498     GTK_OBJ=
2499     if test "$USE_X_TOOLKIT" != "maybe"; then
2500       AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log.  Maybe some x11-devel files missing?]);
2501     fi
2502   else
2503     C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2504     HAVE_GTK=yes
2505     AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2506     GTK_OBJ="gtkutil.o $GTK_OBJ"
2507     term_header=$gtk_term_header
2508     USE_X_TOOLKIT=none
2509     AC_MSG_WARN([[Your version of Gtk+ will have problems with
2510        closing open displays.  This is no problem if you just use
2511        one display, but if you use more than one and close one of them
2512        Emacs may crash.
2513        See http://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2514     sleep 3
2515   fi
2516
2517 fi
2518 AC_SUBST(GTK_OBJ)
2519
2520
2521 if test "${HAVE_GTK}" = "yes"; then
2522
2523   dnl  GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2524   dnl  a lot if #ifdef:s, say we have toolkit scrollbars.
2525   if test "$with_toolkit_scroll_bars" != no; then
2526     with_toolkit_scroll_bars=yes
2527   fi
2528
2529   dnl  Check if we have the old file selection dialog declared and
2530   dnl  in the link library.  In 2.x it may be in the library,
2531   dnl  but not declared if deprecated featured has been selected out.
2532   dnl  AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2533   HAVE_GTK_FILE_SELECTION=no
2534   AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2535                    HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2536 #include <gtk/gtk.h>])
2537   if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2538     AC_CHECK_FUNCS(gtk_file_selection_new)
2539   fi
2540
2541   dnl Same as above for gtk_handle_box.
2542   HAVE_GTK_HANDLE_BOX=no
2543   AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2544                    HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2545 #include <gtk/gtk.h>])
2546   if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2547     AC_CHECK_FUNCS(gtk_handle_box_new)
2548   fi
2549
2550   dnl Same as above for gtk_tearoff_menu_item.
2551   HAVE_GTK_TEAROFF_MENU_ITEM=no
2552   AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2553                    HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2554 #include <gtk/gtk.h>])
2555   if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2556     AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2557   fi
2558
2559   dnl Check for functions introduced in 2.14 and later.
2560   AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2561                  gtk_dialog_get_action_area gtk_widget_get_sensitive \
2562                  gtk_widget_get_mapped gtk_adjustment_get_page_size \
2563                  gtk_orientable_set_orientation \
2564                  gtk_window_set_has_resize_grip)
2565
2566  term_header=gtkutil.h
2567 fi
2568
2569
2570 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2571 HAVE_XWIDGETS=no
2572 XWIDGETS_OBJ=
2573 if test "$with_xwidgets" != "no"; then
2574   test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2575     AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2576
2577   WEBKIT_REQUIRED=1.4.0
2578   WEBKIT_MODULES="webkitgtk-3.0 >= $WEBKIT_REQUIRED"
2579   EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2580   HAVE_XWIDGETS=$HAVE_WEBKIT
2581   test $HAVE_XWIDGETS = yes ||
2582     AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2583
2584   XWIDGETS_OBJ=xwidget.o
2585   AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2586 fi
2587 AC_SUBST(XWIDGETS_OBJ)
2588
2589 CFLAGS=$OLD_CFLAGS
2590 LIBS=$OLD_LIBS
2591
2592 dnl D-Bus has been tested under GNU/Linux only.  Must be adapted for
2593 dnl other platforms.
2594 HAVE_DBUS=no
2595 DBUS_OBJ=
2596 if test "${with_dbus}" = "yes"; then
2597    EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2598    if test "$HAVE_DBUS" = yes; then
2599      AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2600      dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2601      dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2602      dnl D-Bus 1.5.12.
2603      OLD_LIBS=$LIBS
2604      LIBS="$LIBS $DBUS_LIBS"
2605      AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2606                     dbus_type_is_valid \
2607                     dbus_validate_bus_name \
2608                     dbus_validate_path \
2609                     dbus_validate_interface \
2610                     dbus_validate_member)
2611      LIBS=$OLD_LIBS
2612      DBUS_OBJ=dbusbind.o
2613    fi
2614 fi
2615 AC_SUBST(DBUS_CFLAGS)
2616 AC_SUBST(DBUS_LIBS)
2617 AC_SUBST(DBUS_OBJ)
2618
2619 dnl GSettings has been tested under GNU/Linux only.
2620 HAVE_GSETTINGS=no
2621 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2622    EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2623    if test "$HAVE_GSETTINGS" = "yes"; then
2624       old_CFLAGS=$CFLAGS
2625       CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2626       old_LIBS=$LIBS
2627       LIBS="$LIBS $GSETTINGS_LIBS"
2628       AC_MSG_CHECKING([whether GSettings is in gio])
2629       AC_LINK_IFELSE(
2630          [AC_LANG_PROGRAM(
2631              [[/* Check that gsettings really is present.  */
2632              #include <glib-object.h>
2633              #include <gio/gio.h>
2634              ]],
2635              [[
2636                GSettings *settings;
2637                GVariant *val = g_settings_get_value (settings, "");
2638              ]])],
2639          [], HAVE_GSETTINGS=no)
2640       AC_MSG_RESULT([$HAVE_GSETTINGS])
2641
2642       if test "$HAVE_GSETTINGS" = "yes"; then
2643         AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2644         SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2645         SETTINGS_LIBS="$GSETTINGS_LIBS"
2646       fi
2647       CFLAGS=$old_CFLAGS
2648       LIBS=$old_LIBS
2649    fi
2650 fi
2651
2652 dnl GConf has been tested under GNU/Linux only.
2653 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2654 HAVE_GCONF=no
2655 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" = "yes"; then
2656    EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2657    if test "$HAVE_GCONF" = yes; then
2658       AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2659       dnl Newer GConf doesn't link with g_objects, so this is not defined.
2660       SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2661       SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2662    fi
2663 fi
2664
2665 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2666     EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2667     if test "$HAVE_GOBJECT" = "yes"; then
2668        SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2669        SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2670     fi
2671     SAVE_CFLAGS="$CFLAGS"
2672     SAVE_LIBS="$LIBS"
2673     CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2674     LIBS="$SETTINGS_LIBS $LIBS"
2675     CFLAGS="$SAVE_CFLAGS"
2676     LIBS="$SAVE_LIBS"
2677 fi
2678 AC_SUBST(SETTINGS_CFLAGS)
2679 AC_SUBST(SETTINGS_LIBS)
2680
2681
2682 dnl SELinux is available for GNU/Linux only.
2683 HAVE_LIBSELINUX=no
2684 LIBSELINUX_LIBS=
2685 if test "${with_selinux}" = "yes"; then
2686    AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2687    if test "$HAVE_LIBSELINUX" = yes; then
2688       AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2689       LIBSELINUX_LIBS=-lselinux
2690    fi
2691 fi
2692 AC_SUBST(LIBSELINUX_LIBS)
2693
2694 HAVE_GNUTLS=no
2695 if test "${with_gnutls}" = "yes" ; then
2696   EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.6.6],
2697     [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2698   if test "${HAVE_GNUTLS}" = "yes"; then
2699     AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2700     EMACS_CHECK_MODULES([LIBGNUTLS3], [gnutls >= 3.0.0],
2701       [AC_DEFINE(HAVE_GNUTLS3, 1, [Define if using GnuTLS v3.])], [])
2702   fi
2703
2704   # Windows loads GnuTLS dynamically
2705   if test "${opsys}" = "mingw32"; then
2706     LIBGNUTLS_LIBS=
2707   fi
2708 fi
2709
2710 AC_SUBST(LIBGNUTLS_LIBS)
2711 AC_SUBST(LIBGNUTLS_CFLAGS)
2712
2713 NOTIFY_OBJ=
2714 NOTIFY_SUMMARY=no
2715
2716 dnl MS Windows native file monitor is available for mingw32 only.
2717 case $with_file_notification,$opsys in
2718   w32,cygwin)
2719     AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2720     this is only supported on MS-Windows native and MinGW32 builds.
2721     Consider using gfile instead.])
2722     ;;
2723   w32,* | yes,mingw32)
2724     AC_CHECK_HEADER(windows.h)
2725     if test "$ac_cv_header_windows_h" = yes ; then
2726        AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2727        NOTIFY_OBJ=w32notify.o
2728        NOTIFY_SUMMARY="yes (w32)"
2729     fi ;;
2730 esac
2731
2732 dnl inotify is available only on GNU/Linux.
2733 case $with_file_notification,$NOTIFY_OBJ in
2734   inotify, | yes,)
2735     AC_CHECK_HEADER(sys/inotify.h)
2736     if test "$ac_cv_header_sys_inotify_h" = yes ; then
2737         AC_CHECK_FUNC(inotify_init1)
2738         if test "$ac_cv_func_inotify_init1" = yes; then
2739           AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2740           NOTIFY_OBJ=inotify.o
2741           NOTIFY_SUMMARY="yes -lglibc (inotify)"
2742        fi
2743     fi ;;
2744 esac
2745
2746 dnl kqueue is available on BSD-like systems.
2747 case $with_file_notification,$NOTIFY_OBJ in
2748   kqueue,* | yes,)
2749     EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2750     if test "$HAVE_KQUEUE" = "yes"; then
2751        AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2752        CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2753        NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2754        NOTIFY_LIBS=$KQUEUE_LIBS
2755        NOTIFY_OBJ=kqueue.o
2756        NOTIFY_SUMMARY="yes -lkqueue"
2757     else
2758        AC_SEARCH_LIBS(kqueue, [])
2759        if test "$ac_cv_search_kqueue" != no; then
2760          AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2761          NOTIFY_OBJ=kqueue.o
2762          NOTIFY_SUMMARY="yes (kqueue)"
2763        fi
2764     fi ;;
2765 esac
2766
2767 dnl g_file_monitor exists since glib 2.18.  G_FILE_MONITOR_EVENT_MOVED
2768 dnl has been added in glib 2.24.  It has been tested under
2769 dnl GNU/Linux only.
2770 case $with_file_notification,$NOTIFY_OBJ in
2771   gfile,* | yes,)
2772     if test "${HAVE_NS}" = yes; then
2773        AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2774 Consider kqueue instead.])
2775     else
2776        EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2777        if test "$HAVE_GFILENOTIFY" = "yes"; then
2778           AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2779           NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2780           NOTIFY_LIBS=$GFILENOTIFY_LIBS
2781           NOTIFY_OBJ=gfilenotify.o
2782           NOTIFY_SUMMARY="yes -lgio (gfile)"
2783        fi
2784     fi ;;
2785 esac
2786
2787 case $with_file_notification,$NOTIFY_OBJ in
2788   yes,* | no,* | *,?*) ;;
2789   *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2790 esac
2791
2792 if test -n "$NOTIFY_OBJ"; then
2793    AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2794 fi
2795 AC_SUBST(NOTIFY_CFLAGS)
2796 AC_SUBST(NOTIFY_LIBS)
2797 AC_SUBST(NOTIFY_OBJ)
2798
2799 dnl Do not put whitespace before the #include statements below.
2800 dnl Older compilers (eg sunos4 cc) choke on it.
2801 HAVE_XAW3D=no
2802 LUCID_LIBW=
2803 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2804   if test "$with_xaw3d" != no; then
2805     AC_CACHE_VAL(emacs_cv_xaw3d,
2806     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2807 #include <X11/Intrinsic.h>
2808 #include <X11/Xaw3d/Simple.h>]],
2809       [[]])],
2810       [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2811                     emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2812       emacs_cv_xaw3d=no)])
2813   else
2814     emacs_cv_xaw3d=no
2815   fi
2816   if test $emacs_cv_xaw3d = yes; then
2817     AC_MSG_CHECKING(for xaw3d)
2818     AC_MSG_RESULT([yes; using Lucid toolkit])
2819     USE_X_TOOLKIT=LUCID
2820     HAVE_XAW3D=yes
2821     LUCID_LIBW=-lXaw3d
2822     AC_DEFINE(HAVE_XAW3D, 1,
2823               [Define to 1 if you have the Xaw3d library (-lXaw3d).])
2824   else
2825     AC_MSG_CHECKING(for xaw3d)
2826     AC_MSG_RESULT(no)
2827     AC_MSG_CHECKING(for libXaw)
2828     AC_CACHE_VAL(emacs_cv_xaw,
2829     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2830 #include <X11/Intrinsic.h>
2831 #include <X11/Xaw/Simple.h>]],
2832       [[]])],
2833       emacs_cv_xaw=yes,
2834       emacs_cv_xaw=no)])
2835     if test $emacs_cv_xaw = yes; then
2836       AC_MSG_RESULT([yes; using Lucid toolkit])
2837       USE_X_TOOLKIT=LUCID
2838       LUCID_LIBW=-lXaw
2839     elif test x"${USE_X_TOOLKIT}" = xLUCID; then
2840       AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
2841     else
2842       AC_MSG_ERROR([No X toolkit could be found.
2843 If you are sure you want Emacs compiled without an X toolkit, pass
2844   --with-x-toolkit=no
2845 to configure.  Otherwise, install the development libraries for the toolkit
2846 that you want to use (e.g. Gtk+) and re-run configure.])
2847     fi
2848   fi
2849 fi
2850
2851 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
2852
2853 LIBXTR6=
2854 LIBXMU=
2855 if test "${USE_X_TOOLKIT}" != "none"; then
2856   AC_MSG_CHECKING(X11 toolkit version)
2857   AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
2858   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
2859 [[#if XtSpecificationRelease < 6
2860 fail;
2861 #endif
2862 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
2863   HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
2864   if test $emacs_cv_x11_toolkit_version_6 = yes; then
2865     AC_MSG_RESULT(6 or newer)
2866     AC_DEFINE(HAVE_X11XTR6, 1,
2867               [Define to 1 if you have the X11R6 or newer version of Xt.])
2868     LIBXTR6="-lSM -lICE"
2869     case "$opsys" in
2870       ## Use libw.a along with X11R6 Xt.
2871       unixware) LIBXTR6="$LIBXTR6 -lw" ;;
2872     esac
2873   else
2874     AC_MSG_RESULT(before 6)
2875   fi
2876
2877 dnl If using toolkit, check whether libXmu.a exists.
2878 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
2879   OLDLIBS="$LIBS"
2880   if test x$HAVE_X11XTR6 = xyes; then
2881     OTHERLIBS='-lXt -lSM -lICE'
2882   else
2883     OTHERLIBS='-lXt'
2884   fi
2885   AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
2886   if test "X$LIBS" != "X$OLDLIBS"; then
2887     LIBXMU=$ac_cv_search_XmuConvertStandardSelection
2888   fi
2889   LIBS=$OLDLIBS
2890   dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
2891 fi
2892 AC_SUBST(LIBXTR6)
2893 AC_SUBST(LIBXMU)
2894
2895 LIBXP=
2896 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
2897   # OpenMotif may be installed in such a way on some GNU/Linux systems.
2898   if test -d /usr/include/openmotif; then
2899     CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
2900     emacs_cv_openmotif=yes
2901     case "$canonical" in
2902       x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
2903       test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
2904       ;;
2905       *)
2906       test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
2907     esac
2908   else
2909     emacs_cv_openmotif=no
2910   fi
2911   AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
2912   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
2913     [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
2914 int x = 5;
2915 #else
2916 Motif version prior to 2.1.
2917 #endif]])],
2918     emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
2919   if test $emacs_cv_motif_version_2_1 = yes; then
2920     AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
2921     if test x$emacs_cv_openmotif = xyes; then
2922       REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
2923     fi
2924   else
2925     AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
2926     # We put this in CFLAGS temporarily to precede other -I options
2927     # that might be in CFLAGS temporarily.
2928     # We put this in CPPFLAGS where it precedes the other -I options.
2929     OLD_CPPFLAGS=$CPPFLAGS
2930     OLD_CFLAGS=$CFLAGS
2931     CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
2932     CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
2933     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
2934       [[int x = 5;]])],
2935       emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
2936     if test $emacs_cv_lesstif = yes; then
2937       # Make sure this -I option remains in CPPFLAGS after it is set
2938       # back to REAL_CPPFLAGS.
2939       # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
2940       # have those other -I options anyway.  Ultimately, having this
2941       # directory ultimately in CPPFLAGS will be enough.
2942       REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
2943       LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
2944     else
2945       CFLAGS=$OLD_CFLAGS
2946       CPPFLAGS=$OLD_CPPFLAGS
2947     fi
2948   fi
2949   AC_CHECK_HEADER([Xm/BulletinB.h], [],
2950     [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
2951 fi
2952
2953 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
2954 dnl using Motif or Xaw3d is available, and unless
2955 dnl --with-toolkit-scroll-bars=no was specified.
2956
2957 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
2958             [Define to 1 if we should use toolkit scroll bars.])dnl
2959 USE_TOOLKIT_SCROLL_BARS=no
2960 if test "${with_toolkit_scroll_bars}" != "no"; then
2961   if test "${USE_X_TOOLKIT}" != "none"; then
2962     if test "${USE_X_TOOLKIT}" = "MOTIF"; then
2963       AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2964       HAVE_XAW3D=no
2965       USE_TOOLKIT_SCROLL_BARS=yes
2966     elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
2967       AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2968       USE_TOOLKIT_SCROLL_BARS=yes
2969     fi
2970   elif test "${HAVE_GTK}" = "yes"; then
2971     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2972     USE_TOOLKIT_SCROLL_BARS=yes
2973   elif test "${HAVE_NS}" = "yes"; then
2974     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2975     USE_TOOLKIT_SCROLL_BARS=yes
2976   elif test "${HAVE_W32}" = "yes"; then
2977     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2978     USE_TOOLKIT_SCROLL_BARS=yes
2979   fi
2980 fi
2981
2982 dnl See if XIM is available.
2983 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2984           #include <X11/Xlib.h>
2985           #include <X11/Xresource.h>]],
2986          [[XIMProc  callback;]])],
2987          [HAVE_XIM=yes
2988          AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
2989          HAVE_XIM=no)
2990
2991 dnl '--with-xim' now controls only the initial value of use_xim at run time.
2992
2993 if test "${with_xim}" != "no"; then
2994   AC_DEFINE(USE_XIM, 1,
2995             [Define to 1 if we should use XIM, if it is available.])
2996 fi
2997
2998
2999 if test "${HAVE_XIM}" != "no"; then
3000   late_CFLAGS=$CFLAGS
3001   if test "$GCC" = yes; then
3002     CFLAGS="$CFLAGS --pedantic-errors"
3003   fi
3004   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3005 #include <X11/Xlib.h>
3006 #include <X11/Xresource.h>]],
3007 [[Display *display;
3008 XrmDatabase db;
3009 char *res_name;
3010 char *res_class;
3011 XIMProc  callback;
3012 XPointer *client_data;
3013 #ifndef __GNUC__
3014 /* If we're not using GCC, it's probably not XFree86, and this is
3015    probably right, but we can't use something like --pedantic-errors.  */
3016 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3017                                            char*, XIMProc, XPointer*);
3018 #endif
3019 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3020    client_data);]])],
3021     [emacs_cv_arg6_star=yes])
3022   AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3023          [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3024 either XPointer or XPointer*.])dnl
3025   if test "$emacs_cv_arg6_star" = yes; then
3026     AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3027   else
3028     AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3029   fi
3030   CFLAGS=$late_CFLAGS
3031 fi
3032
3033 ### Start of font-backend (under any platform) section.
3034 # (nothing here yet -- this is a placeholder)
3035 ### End of font-backend (under any platform) section.
3036
3037 ### Start of font-backend (under X11) section.
3038 if test "${HAVE_X11}" = "yes"; then
3039     ## Use -lXft if available, unless '--with-xft=no'.
3040     HAVE_XFT=maybe
3041     if test "x${with_x}" = "xno"; then
3042       with_xft="no";
3043     fi
3044
3045     if test "$with_xft" != no; then
3046       EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3047       with_xft=$HAVE_FONTCONFIG
3048     fi
3049
3050     if test "x${with_xft}" != "xno"; then
3051
3052       EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3053       ## Because xftfont.c uses XRenderQueryExtension, we also
3054       ## need to link to -lXrender.
3055       HAVE_XRENDER=no
3056       AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3057       if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3058         OLD_CPPFLAGS="$CPPFLAGS"
3059         OLD_CFLAGS="$CFLAGS"
3060         OLD_LIBS="$LIBS"
3061         CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3062         CFLAGS="$CFLAGS $XFT_CFLAGS"
3063         XFT_LIBS="-lXrender $XFT_LIBS"
3064         LIBS="$XFT_LIBS $LIBS"
3065         AC_CHECK_HEADER(X11/Xft/Xft.h,
3066           AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3067           [[#include <X11/X.h>]])
3068
3069         if test "${HAVE_XFT}" = "yes"; then
3070           AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3071             AC_SUBST(XFT_LIBS)
3072           C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3073         fi                        # "${HAVE_XFT}" = "yes"
3074         CPPFLAGS=$OLD_CPPFLAGS
3075         CFLAGS=$OLD_CFLAGS
3076         LIBS=$OLD_LIBS
3077       fi                          # "$HAVE_XFT" != no
3078     fi                            # "x${with_xft}" != "xno"
3079
3080     ## We used to allow building with FreeType and without Xft.
3081     ## However, the ftx font backend driver is not in good shape.
3082     if test "$HAVE_XFT" != "yes"; then
3083        dnl For the "Does Emacs use" message at the end.
3084        HAVE_XFT=no
3085        HAVE_FREETYPE=no
3086     else
3087        dnl Strict linkers fail with
3088        dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3089        dnl if -lfreetype is not specified.
3090        dnl The following is needed to set FREETYPE_LIBS.
3091        EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3092
3093        test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3094     fi
3095
3096     HAVE_LIBOTF=no
3097     if test "${HAVE_FREETYPE}" = "yes"; then
3098       AC_DEFINE(HAVE_FREETYPE, 1,
3099                 [Define to 1 if using the freetype and fontconfig libraries.])
3100       if test "${with_libotf}" != "no"; then
3101         EMACS_CHECK_MODULES([LIBOTF], [libotf])
3102         if test "$HAVE_LIBOTF" = "yes"; then
3103           AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3104           AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3105                        HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3106                        HAVE_OTF_GET_VARIATION_GLYPHS=no)
3107           if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3108             AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3109                       [Define to 1 if libotf has OTF_get_variation_glyphs.])
3110           fi
3111         fi
3112       fi
3113     dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3114     dnl Does the new font backend require it, or can it work without it?
3115     fi
3116
3117     HAVE_M17N_FLT=no
3118     if test "${HAVE_LIBOTF}" = yes; then
3119       if test "${with_m17n_flt}" != "no"; then
3120         EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3121         if test "$HAVE_M17N_FLT" = "yes"; then
3122           AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3123         fi
3124       fi
3125     fi
3126 else
3127     HAVE_XFT=no
3128     HAVE_FREETYPE=no
3129     HAVE_LIBOTF=no
3130     HAVE_M17N_FLT=no
3131 fi
3132
3133 ### End of font-backend (under X11) section.
3134
3135 AC_SUBST(FREETYPE_CFLAGS)
3136 AC_SUBST(FREETYPE_LIBS)
3137 AC_SUBST(FONTCONFIG_CFLAGS)
3138 AC_SUBST(FONTCONFIG_LIBS)
3139 AC_SUBST(LIBOTF_CFLAGS)
3140 AC_SUBST(LIBOTF_LIBS)
3141 AC_SUBST(M17N_FLT_CFLAGS)
3142 AC_SUBST(M17N_FLT_LIBS)
3143
3144 HAVE_CAIRO=no
3145 if test "${HAVE_X11}" = "yes"; then
3146   if test "${with_cairo}" != "no"; then
3147     CAIRO_REQUIRED=1.12.0
3148     CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3149     EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3150     if test $HAVE_CAIRO = yes; then
3151       AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3152     else
3153       AC_MSG_ERROR([cairo requested but not found.])
3154     fi
3155
3156     CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3157     LIBS="$LIBS $CAIRO_LIBS"
3158     AC_SUBST(CAIRO_CFLAGS)
3159     AC_SUBST(CAIRO_LIBS)
3160   fi
3161 fi
3162
3163 if test "${HAVE_X11}" = "yes"; then
3164   AC_CHECK_HEADER(X11/Xlib-xcb.h,
3165     AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3166   if test "${HAVE_XCB}" = "yes"; then
3167     AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3168     if test "${HAVE_X11_XCB}" = "yes"; then
3169       AC_DEFINE(USE_XCB, 1,
3170 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3171    X11/XCB programming.])
3172       XCB_LIBS="-lX11-xcb -lxcb"
3173       AC_SUBST(XCB_LIBS)
3174     fi
3175   fi
3176 fi
3177
3178 ### Use -lXpm if available, unless '--with-xpm=no'.
3179 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3180 ### In the Cygwin-w32 build, we need to use /usr/include/noX/X11/xpm.h
3181 ### rather than /usr/include/X11/xpm.h, so we set CPPFLAGS (and
3182 ### LDFLAGS) accordingly.
3183 HAVE_XPM=no
3184 LIBXPM=
3185 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3186   if test "${with_xpm}" != "no"; then
3187     SAVE_CPPFLAGS="$CPPFLAGS"
3188     SAVE_LDFLAGS="$LDFLAGS"
3189     CPPFLAGS="$CPPFLAGS -I/usr/include/noX"
3190     LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3191     AC_CHECK_HEADER(X11/xpm.h,
3192       [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3193     if test "${HAVE_XPM}" = "yes"; then
3194       AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3195       AC_EGREP_CPP(no_return_alloc_pixels,
3196       [#include "X11/xpm.h"
3197 #ifndef XpmReturnAllocPixels
3198 no_return_alloc_pixels
3199 #endif
3200       ], HAVE_XPM=no, HAVE_XPM=yes)
3201
3202       if test "${HAVE_XPM}" = "yes"; then
3203         REAL_CPPFLAGS="$REAL_CPPFLAGS -I/usr/include/noX"
3204         AC_MSG_RESULT(yes)
3205       else
3206         AC_MSG_RESULT(no)
3207         CPPFLAGS="$SAVE_CPPFLAGS"
3208         LDFLAGS="$SAVE_LDFLAGS"
3209       fi
3210     fi
3211   fi
3212
3213   if test "${HAVE_XPM}" = "yes"; then
3214     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3215     LIBXPM=-lXpm
3216   fi
3217 fi
3218
3219 if test "${HAVE_X11}" = "yes"; then
3220   dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3221   test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3222
3223   if test "${with_xpm}" != "no"; then
3224     AC_CHECK_HEADER(X11/xpm.h,
3225       [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3226     if test "${HAVE_XPM}" = "yes"; then
3227       AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3228       AC_EGREP_CPP(no_return_alloc_pixels,
3229       [#include "X11/xpm.h"
3230 #ifndef XpmReturnAllocPixels
3231 no_return_alloc_pixels
3232 #endif
3233       ], HAVE_XPM=no, HAVE_XPM=yes)
3234
3235       if test "${HAVE_XPM}" = "yes"; then
3236         AC_MSG_RESULT(yes)
3237       else
3238         AC_MSG_RESULT(no)
3239       fi
3240     fi
3241   fi
3242
3243   if test "${HAVE_XPM}" = "yes"; then
3244     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3245     LIBXPM=-lXpm
3246   elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3247     dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3248     LIBXPM=-lXpm
3249   fi
3250 fi
3251
3252 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3253 ### slightly different requirements wrt image libraries (it doesn't
3254 ### use -lXpm because it loads the xpm shared library dynamically at
3255 ### run time).
3256 if test "${opsys}" = "mingw32"; then
3257   if test "${with_xpm}" != "no"; then
3258     AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3259 #define FOR_MSW 1])
3260   fi
3261
3262   if test "${HAVE_XPM}" = "yes"; then
3263     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3264   fi
3265 fi
3266
3267 AC_SUBST(LIBXPM)
3268
3269 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3270 HAVE_JPEG=no
3271 LIBJPEG=
3272 if test "${with_jpeg}" != "no"; then
3273   AC_CACHE_CHECK([for jpeglib 6b or later],
3274     [emacs_cv_jpeglib],
3275     [OLD_LIBS=$LIBS
3276      for emacs_cv_jpeglib in yes -ljpeg no; do
3277        case $emacs_cv_jpeglib in
3278          yes) ;;
3279          no) break;;
3280          *) LIBS="$LIBS $emacs_cv_jpeglib";;
3281        esac
3282        AC_LINK_IFELSE(
3283          [AC_LANG_PROGRAM(
3284             [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision.  */
3285               #include <stdio.h> /* jpeglib.h needs FILE and size_t.  */
3286               #include <jpeglib.h>
3287               #include <jerror.h>
3288               char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3289               struct jpeg_decompress_struct cinfo;
3290             ]],
3291             [[
3292               jpeg_create_decompress (&cinfo);
3293               WARNMS (&cinfo, JWRN_JPEG_EOF);
3294               jpeg_destroy_decompress (&cinfo);
3295             ]])],
3296          [emacs_link_ok=yes],
3297          [emacs_link_ok=no])
3298        LIBS=$OLD_LIBS
3299        test $emacs_link_ok = yes && break
3300      done])
3301   if test "$emacs_cv_jpeglib" != no; then
3302     HAVE_JPEG=yes
3303     AC_DEFINE([HAVE_JPEG], 1,
3304       [Define to 1 if you have the jpeg library (typically -ljpeg).])
3305     ### mingw32 doesn't use -ljpeg, since it loads the library
3306     ### dynamically when needed, and doesn't want a run-time
3307     ### dependency on the jpeglib DLL.
3308     test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3309     && LIBJPEG=$emacs_cv_jpeglib
3310   fi
3311 fi
3312 AC_SUBST(LIBJPEG)
3313
3314 HAVE_ZLIB=no
3315 LIBZ=
3316 if test "${with_zlib}" != "no"; then
3317   OLIBS=$LIBS
3318   AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3319   LIBS=$OLIBS
3320   case $ac_cv_search_inflateEnd in
3321     -*) LIBZ=$ac_cv_search_inflateEnd ;;
3322   esac
3323 fi
3324 if test "${HAVE_ZLIB}" = "yes"; then
3325   AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3326   ### mingw32 doesn't use -lz, since it loads the library dynamically.
3327   if test "${opsys}" = "mingw32"; then
3328      LIBZ=
3329   fi
3330 fi
3331 AC_SUBST(LIBZ)
3332
3333 ### Dynamic modules support
3334 LIBMODULES=
3335 HAVE_MODULES=no
3336 MODULES_OBJ=
3337 MODULES_SUFFIX=
3338 if test "${with_modules}" != "no"; then
3339   if test "$opsys" = "gnu-linux"; then
3340     LIBMODULES="-ldl"
3341     MODULES_SUFFIX=".so"
3342     HAVE_MODULES=yes
3343   elif test "$opsys" = "cygwin"; then
3344     MODULES_SUFFIX=".dll"
3345     HAVE_MODULES=yes
3346   elif test "$opsys" = "darwin"; then
3347     MODULES_SUFFIX=".so"
3348     HAVE_MODULES=yes
3349   elif test "$opsys" = "mingw32"; then
3350     MODULES_SUFFIX=".dll"
3351     HAVE_MODULES=yes
3352   else
3353     # BSD system have dlopen in the libc
3354     AC_CHECK_FUNC(dlopen, [MODULES_SUFFIX=".so"]
3355                           [HAVE_MODULES=yes], [])
3356   fi
3357
3358   if test "${HAVE_MODULES}" = no; then
3359     AC_MSG_ERROR([Dynamic modules are not supported on your system])
3360   else
3361     SAVE_LIBS=$LIBS
3362     LIBS="$LIBS $LIBMODULES"
3363     AC_CHECK_FUNCS([dlfunc])
3364     LIBS=$SAVE_LIBS
3365   fi
3366 fi
3367
3368 if test "${HAVE_MODULES}" = yes; then
3369    MODULES_OBJ="dynlib.o emacs-module.o"
3370    AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3371    AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3372      [System extension for dynamic libraries])
3373 fi
3374 AC_SUBST(MODULES_OBJ)
3375 AC_SUBST(LIBMODULES)
3376 AC_CHECK_FUNCS(dladdr)
3377
3378 ### Use -lpng if available, unless '--with-png=no'.
3379 HAVE_PNG=no
3380 LIBPNG=
3381 PNG_CFLAGS=
3382 if test "${NS_IMPL_COCOA}" = yes; then
3383   : # Nothing to do
3384 elif test "${with_png}" != no; then
3385   # mingw32 loads the library dynamically.
3386   if test "$opsys" = mingw32; then
3387     AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3388   elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3389     AC_MSG_CHECKING([for png])
3390     png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3391     png_libs=`(libpng-config --libs) 2>&AS_MESSAGE_LOG_FD` || {
3392       # libpng-config does not work; configure by hand.
3393       # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3394       # in /usr/include/libpng.
3395       if test -r /usr/include/libpng/png.h &&
3396          test ! -r /usr/include/png.h; then
3397         png_cflags=-I/usr/include/libpng
3398       else
3399         png_cflags=
3400       fi
3401       png_libs='-lpng'
3402     }
3403     SAVE_CFLAGS=$CFLAGS
3404     SAVE_LIBS=$LIBS
3405     CFLAGS="$CFLAGS $png_cflags"
3406     LIBS="$png_libs -lz -lm $LIBS"
3407     AC_LINK_IFELSE(
3408       [AC_LANG_PROGRAM([[#include <png.h>]],
3409          [[return !png_get_channels (0, 0);]])],
3410       [HAVE_PNG=yes
3411        PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3412        LIBPNG=$png_libs
3413        # $LIBPNG requires explicit -lz in some cases.
3414        # We don't know what those cases are, exactly, so play it safe and
3415        # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3416        if test -n "$LIBPNG" && test -z "$LIBZ"; then
3417          LIBPNG="$LIBPNG -lz"
3418        fi])
3419     CFLAGS=$SAVE_CFLAGS
3420     LIBS=$SAVE_LIBS
3421     AC_MSG_RESULT([$HAVE_PNG])
3422   fi
3423 fi
3424 if test $HAVE_PNG = yes; then
3425   AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3426
3427   SAVE_CFLAGS=$CFLAGS
3428   CFLAGS="$CFLAGS $PNG_CFLAGS"
3429   AC_CHECK_DECL([png_longjmp],
3430     [],
3431     [AC_DEFINE([PNG_DEPSTRUCT], [],
3432        [Define to empty to suppress deprecation warnings when building
3433         with --enable-gcc-warnings and with libpng versions before 1.5,
3434         which lack png_longjmp.])],
3435     [[#include <png.h>
3436     ]])
3437   CFLAGS=$SAVE_CFLAGS
3438 fi
3439 AC_SUBST(LIBPNG)
3440 AC_SUBST(PNG_CFLAGS)
3441
3442 ### Use -ltiff if available, unless '--with-tiff=no'.
3443 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3444 HAVE_TIFF=no
3445 LIBTIFF=
3446 if test "${opsys}" = "mingw32"; then
3447   if test "${with_tiff}" != "no"; then
3448     AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3449   fi
3450   if test "${HAVE_TIFF}" = "yes"; then
3451     AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3452   fi
3453 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3454   if test "${with_tiff}" != "no"; then
3455     AC_CHECK_HEADER(tiffio.h,
3456       [tifflibs="-lz -lm"
3457       # At least one tiff package requires the jpeg library.
3458       if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3459       AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3460   fi
3461
3462   if test "${HAVE_TIFF}" = "yes"; then
3463     AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3464     dnl FIXME -lz -lm, as per libpng?
3465     LIBTIFF=-ltiff
3466   fi
3467 fi
3468 AC_SUBST(LIBTIFF)
3469
3470 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3471 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3472 HAVE_GIF=no
3473 LIBGIF=
3474 if test "${opsys}" = "mingw32"; then
3475   if test "${with_gif}" != "no"; then
3476     AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3477   fi
3478   if test "${HAVE_GIF}" = "yes"; then
3479     AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3480   fi
3481 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3482         || test "${HAVE_W32}" = "yes"; then
3483   AC_CHECK_HEADER(gif_lib.h,
3484 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3485 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3486     [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3487         [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3488
3489   if test "$HAVE_GIF" = yes; then
3490     LIBGIF=-lgif
3491   elif test "$HAVE_GIF" = maybe; then
3492 # If gif_lib.h but no libgif, try libungif.
3493     AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3494     test "$HAVE_GIF" = yes && LIBGIF=-lungif
3495   fi
3496
3497   if test "${HAVE_GIF}" = "yes"; then
3498     AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3499   fi
3500 fi
3501 AC_SUBST(LIBGIF)
3502
3503 dnl Check for required libraries.
3504 if test "${HAVE_X11}" = "yes"; then
3505   MISSING=""
3506   WITH_NO=""
3507   test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3508     MISSING="libXpm" && WITH_NO="--with-xpm=no"
3509   test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3510     MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3511   test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3512     MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3513   test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3514     MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3515   test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3516     MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3517
3518   if test "X${MISSING}" != X; then
3519     AC_MSG_ERROR([The following required libraries were not found:
3520     $MISSING
3521 Maybe some development libraries/packages are missing?
3522 If you don't want to link with them give
3523     $WITH_NO
3524 as options to configure])
3525   fi
3526 fi
3527
3528 ### Use -lgpm if available, unless '--with-gpm=no'.
3529 HAVE_GPM=no
3530 LIBGPM=
3531 if test "${with_gpm}" != "no"; then
3532   AC_CHECK_HEADER(gpm.h,
3533     [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3534
3535   if test "${HAVE_GPM}" = "yes"; then
3536     AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3537     LIBGPM=-lgpm
3538   fi
3539 fi
3540 AC_SUBST(LIBGPM)
3541
3542 dnl Check for malloc/malloc.h on darwin
3543 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3544
3545 GNUSTEP_CFLAGS=
3546 ### Use NeXTstep API to implement GUI.
3547 if test "${HAVE_NS}" = "yes"; then
3548   AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on Mac OS X.])
3549   if test "${NS_IMPL_COCOA}" = "yes"; then
3550     AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under MacOS X.])
3551   fi
3552   if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3553     AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3554     if test $NS_GNUSTEP_CONFIG != yes; then
3555       # See also .m.o rule in src/Makefile.in.  */
3556       # FIXME: are all these flags really needed?  Document here why.  */
3557       GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3558       ## Extra CFLAGS applied to src/*.m files.
3559       GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3560     fi
3561   fi
3562   OTHER_FILES=ns-app
3563 fi
3564
3565 ### Use session management (-lSM -lICE) if available
3566 HAVE_X_SM=no
3567 LIBXSM=
3568 if test "${HAVE_X11}" = "yes"; then
3569   AC_CHECK_HEADER(X11/SM/SMlib.h,
3570     [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3571
3572   if test "${HAVE_X_SM}" = "yes"; then
3573     AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3574     LIBXSM="-lSM -lICE"
3575   fi
3576 fi
3577 AC_SUBST(LIBXSM)
3578
3579 ### Use XRandr (-lXrandr) if available
3580 HAVE_XRANDR=no
3581 if test "${HAVE_X11}" = "yes"; then
3582   XRANDR_REQUIRED=1.2.2
3583   XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3584   EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3585   if test $HAVE_XRANDR = no; then
3586     # Test old way in case pkg-config doesn't have it (older machines).
3587     # Include Xrender.h by hand to work around bug in older Xrandr.h
3588     # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3589     AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3590       [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3591       [], [AC_INCLUDES_DEFAULT
3592 #include <X11/extensions/Xrender.h>])
3593     if test $HAVE_XRANDR = yes; then
3594       XRANDR_LIBS=-lXrandr
3595     fi
3596   fi
3597   if test $HAVE_XRANDR = yes; then
3598     SAVE_CFLAGS="$CFLAGS"
3599     SAVE_LIBS="$LIBS"
3600     CFLAGS="$XRANDR_CFLAGS $CFLAGS"
3601     LIBS="$XRANDR_LIBS $LIBS"
3602     AC_CHECK_FUNCS(XRRGetOutputPrimary XRRGetScreenResourcesCurrent)
3603     CFLAGS="$SAVE_CFLAGS"
3604     LIBS="$SAVE_LIBS"
3605
3606     AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3607   fi
3608 fi
3609 AC_SUBST(XRANDR_CFLAGS)
3610 AC_SUBST(XRANDR_LIBS)
3611
3612 ### Use Xinerama (-lXinerama) if available
3613 HAVE_XINERAMA=no
3614 if test "${HAVE_X11}" = "yes"; then
3615   XINERAMA_REQUIRED=1.0.2
3616   XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3617   EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3618   if test $HAVE_XINERAMA = no; then
3619     # Test old way in case pkg-config doesn't have it (older machines).
3620     AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3621       [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3622     if test $HAVE_XINERAMA = yes; then
3623       XINERAMA_LIBS=-lXinerama
3624     fi
3625   fi
3626   if test $HAVE_XINERAMA = yes; then
3627     AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3628   fi
3629 fi
3630 AC_SUBST(XINERAMA_CFLAGS)
3631 AC_SUBST(XINERAMA_LIBS)
3632
3633 ### Use Xfixes (-lXfixes) if available
3634 HAVE_XFIXES=no
3635 if test "${HAVE_X11}" = "yes"; then
3636   XFIXES_REQUIRED=4.0.0
3637   XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3638   EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3639   if test $HAVE_XFIXES = no; then
3640     # Test old way in case pkg-config doesn't have it (older machines).
3641     AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3642       [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3643     if test $HAVE_XFIXES = yes; then
3644       XFIXES_LIBS=-lXfixes
3645     fi
3646   fi
3647   if test $HAVE_XFIXES = yes; then
3648     AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3649   fi
3650 fi
3651 AC_SUBST(XFIXES_CFLAGS)
3652 AC_SUBST(XFIXES_LIBS)
3653
3654 ### Use libxml (-lxml2) if available
3655 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3656 HAVE_LIBXML2=no
3657 if test "${with_xml2}" != "no"; then
3658   ### I'm not sure what the version number should be, so I just guessed.
3659   EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3660   # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3661   if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3662     SAVE_CPPFLAGS="$CPPFLAGS"
3663     if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3664       dnl /usr/include is not found.  Try Xcode SDK dir if it is sane.
3665       xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3666       case $xcsdkdir in
3667         *[[\\\"\#\$\&\'\`$am_lf\ \      ]]*)
3668         xcsdkdir="" ;;
3669       esac
3670     fi
3671     CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
3672     AC_CHECK_HEADER(libxml/HTMLparser.h,
3673       [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3674                      [#include <libxml/HTMLparser.h>])])
3675     CPPFLAGS="$SAVE_CPPFLAGS"
3676     if test "${HAVE_LIBXML2}" = "yes"; then
3677       LIBXML2_CFLAGS="-I'$xcsdkdir/usr/include/libxml2'"
3678       LIBXML2_LIBS="-lxml2"
3679     fi
3680   fi
3681   if test "${HAVE_LIBXML2}" = "yes"; then
3682     if test "${opsys}" != "mingw32"; then
3683       AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3684         [$LIBXML2_LIBS])
3685     else
3686       LIBXML2_LIBS=""
3687     fi
3688     if test "${HAVE_LIBXML2}" = "yes"; then
3689       AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3690     else
3691       LIBXML2_LIBS=""
3692       LIBXML2_CFLAGS=""
3693     fi
3694   fi
3695 fi
3696 AC_SUBST(LIBXML2_LIBS)
3697 AC_SUBST(LIBXML2_CFLAGS)
3698
3699 # If netdb.h doesn't declare h_errno, we must declare it by hand.
3700 # On MinGW, that is provided by nt/inc/sys/socket.h and w32.c.
3701 if test "${opsys}" = "mingw32"; then
3702   emacs_cv_netdb_declares_h_errno=yes
3703 fi
3704 AC_CACHE_CHECK(whether netdb declares h_errno,
3705                emacs_cv_netdb_declares_h_errno,
3706 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
3707   [[return h_errno;]])],
3708   emacs_cv_netdb_declares_h_errno=yes, emacs_cv_netdb_declares_h_errno=no)])
3709 if test $emacs_cv_netdb_declares_h_errno = yes; then
3710   AC_DEFINE(HAVE_H_ERRNO, 1, [Define to 1 if netdb.h declares h_errno.])
3711 fi
3712
3713 # Check for mail-locking functions in a "mail" library.  Probably this should
3714 # have the same check as for liblockfile below.
3715 AC_CHECK_LIB(mail, maillock, have_mail=yes, have_mail=no)
3716 if test $have_mail = yes; then
3717   LIBS_MAIL=-lmail
3718   AC_DEFINE(HAVE_LIBMAIL, 1, [Define to 1 if you have the 'mail' library (-lmail).])
3719
3720   OLD_LIBS=$LIBS
3721   LIBS="$LIBS_MAIL $LIBS"
3722   AC_CHECK_FUNCS(touchlock)
3723   LIBS=$OLD_LIBS
3724 else
3725   LIBS_MAIL=
3726 fi
3727 dnl Debian, at least:
3728 AC_CHECK_LIB(lockfile, maillock, have_lockfile=yes, have_lockfile=no)
3729 if test $have_lockfile = yes; then
3730    LIBS_MAIL=-llockfile
3731    AC_DEFINE(HAVE_LIBLOCKFILE, 1, [Define to 1 if you have the 'lockfile' library (-llockfile).])
3732 else
3733 # If we have the shared liblockfile, assume we must use it for mail
3734 # locking (e.g. Debian).  If we couldn't link against liblockfile
3735 # (no liblockfile.a installed), ensure that we don't need to.
3736   dnl This works for files generally, not just executables.
3737   dnl Should we look elsewhere for it?  Maybe examine /etc/ld.so.conf?
3738   AC_CHECK_PROG(liblockfile, liblockfile.so, yes, no,
3739                 /usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH)
3740   if test $ac_cv_prog_liblockfile = yes; then
3741     AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3742 This probably means that movemail could lose mail.
3743 There may be a 'development' package to install containing liblockfile.])
3744   fi
3745 fi
3746 AC_CHECK_HEADERS_ONCE(maillock.h)
3747 AC_SUBST(LIBS_MAIL)
3748
3749 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3750 ## interlock access to the mail spool.  The alternative is a lock file named
3751 ## /usr/spool/mail/$USER.lock.
3752 mail_lock=no
3753 case "$opsys" in
3754   aix4-2) mail_lock="lockf" ;;
3755
3756   gnu|freebsd|dragonfly|netbsd|openbsd|darwin|irix6-5) mail_lock="flock" ;;
3757
3758   ## On GNU/Linux systems, both methods are used by various mail programs.
3759   ## I assume most people are using newer mailers that have heard of flock.
3760   ## Change this if you need to.
3761   ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3762   ## configure gets the right answers, and that means *NOT* using flock.
3763   ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3764   ## for details." and then uses '#ifdef DEBIAN'.  Unfortunately the
3765   ## Debian maintainer hasn't provided a clean fix for Emacs.
3766   ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3767   ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3768   ## correct logic.  -- fx
3769   ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3770   ## liblockfile is a Free Software replacement for libmail, used on
3771   ## Debian systems and elsewhere. -rfr.
3772   gnu-*)
3773     mail_lock="flock"
3774     if test $have_mail = yes || test $have_lockfile = yes; then
3775       test $ac_cv_header_maillock_h = yes && mail_lock=no
3776     fi
3777     ;;
3778
3779   mingw32)
3780     mail_lock="none-needed" ;;
3781 esac
3782
3783 BLESSMAIL_TARGET=
3784 case "$mail_lock" in
3785   flock) AC_DEFINE(MAIL_USE_FLOCK, 1, [Define if the mailer uses flock to interlock the mail spool.]) ;;
3786
3787   lockf) AC_DEFINE(MAIL_USE_LOCKF, 1, [Define if the mailer uses lockf to interlock the mail spool.]) ;;
3788
3789   none-needed) ;;
3790
3791   *) BLESSMAIL_TARGET="need-blessmail" ;;
3792 esac
3793 AC_SUBST(BLESSMAIL_TARGET)
3794
3795 OLD_LIBS=$LIBS
3796 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
3797 AC_CHECK_FUNCS(accept4 fchdir gethostname \
3798 getrusage get_current_dir_name \
3799 lrand48 random rint \
3800 select getpagesize setlocale newlocale \
3801 getrlimit setrlimit shutdown getaddrinfo \
3802 pthread_sigmask strsignal setitimer \
3803 sendto recvfrom getsockname getpeername getifaddrs freeifaddrs \
3804 gai_strerror sync \
3805 getpwent endpwent getgrent endgrent \
3806 cfmakeraw cfsetspeed copysign __executable_start log2)
3807 LIBS=$OLD_LIBS
3808
3809 dnl No need to check for aligned_alloc and posix_memalign if using
3810 dnl gmalloc.o, as it supplies them, unless we're using hybrid_malloc.
3811 dnl Don't use these functions on Darwin as they are incompatible with
3812 dnl unexmacosx.c.
3813 if (test -z "$GMALLOC_OBJ" || test "$hybrid_malloc" = yes) \
3814   && test "$opsys" != darwin; then
3815   AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
3816 fi
3817
3818 dnl Cannot use AC_CHECK_FUNCS
3819 AC_CACHE_CHECK([for __builtin_unwind_init],
3820                emacs_cv_func___builtin_unwind_init,
3821 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
3822                 emacs_cv_func___builtin_unwind_init=yes,
3823                 emacs_cv_func___builtin_unwind_init=no)])
3824 if test $emacs_cv_func___builtin_unwind_init = yes; then
3825   AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
3826             [Define to 1 if you have the '__builtin_unwind_init' function.])
3827 fi
3828
3829 AC_CHECK_HEADERS_ONCE(sys/un.h)
3830
3831 AC_FUNC_FSEEKO
3832
3833 # UNIX98 PTYs.
3834 AC_CHECK_FUNCS(grantpt)
3835
3836 # PTY-related GNU extensions.
3837 AC_CHECK_FUNCS(getpt posix_openpt)
3838
3839 # Check this now, so that we will NOT find the above functions in ncurses.
3840 # That is because we have not set up to link ncurses in lib-src.
3841 # It's better to believe a function is not available
3842 # than to expect to find it in ncurses.
3843 # Also we need tputs and friends to be able to build at all.
3844 AC_MSG_CHECKING([for library containing tputs])
3845 # Run a test program that contains a call to tputs, a call that is
3846 # never executed.  This tests whether a pre-'main' dynamic linker
3847 # works with the library.  It's too much trouble to actually call
3848 # tputs in the test program, due to portability hassles.  When
3849 # cross-compiling, assume the test program will run if it links.
3850 AC_DEFUN([tputs_link_source], [
3851   AC_LANG_SOURCE(
3852      [[extern void tputs (const char *, int, int (*)(int));
3853        int main (int argc, char **argv)
3854        {
3855           if (argc == 10000)
3856             tputs (argv[0], 0, 0);
3857           return 0;
3858        }]])
3859 ])
3860 if test "${opsys}" = "mingw32"; then
3861   msg='none required'
3862 else
3863   # Maybe curses should be tried earlier?
3864   # See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
3865   for tputs_library in '' tinfo ncurses terminfo termcap curses; do
3866     OLIBS=$LIBS
3867     if test -z "$tputs_library"; then
3868       LIBS_TERMCAP=
3869       msg='none required'
3870     else
3871       LIBS_TERMCAP=-l$tputs_library
3872       msg=$LIBS_TERMCAP
3873       LIBS="$LIBS_TERMCAP $LIBS"
3874     fi
3875     AC_RUN_IFELSE([tputs_link_source], [], [msg=no],
3876       [AC_LINK_IFELSE([tputs_link_source], [], [msg=no])])
3877     LIBS=$OLIBS
3878     if test "X$msg" != Xno; then
3879       break
3880     fi
3881   done
3882 fi
3883 AC_MSG_RESULT([$msg])
3884 if test "X$msg" = Xno; then
3885   AC_MSG_ERROR([The required function 'tputs' was not found in any library.
3886 The following libraries were tried (in order):
3887   libtinfo, libncurses, libterminfo, libtermcap, libcurses
3888 Please try installing whichever of these libraries is most appropriate
3889 for your system, together with its header files.
3890 For example, a libncurses-dev(el) or similar package.])
3891 fi
3892
3893 ## Use termcap instead of terminfo?
3894 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
3895 TERMINFO=yes
3896 ## FIXME?  In the cases below where we unconditionally set
3897 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
3898 ## if that was found above to have tputs.
3899 ## Should we use the gnu* logic everywhere?
3900 case "$opsys" in
3901   ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
3902   ##  The ncurses library has been moved out of the System framework in
3903   ##  Mac OS X 10.2.  So if configure detects it, set the command-line
3904   ##  option to use it.
3905   darwin) LIBS_TERMCAP="-lncurses" ;;
3906
3907   gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
3908
3909   freebsd)
3910     AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
3911     AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
3912     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
3913 [[#if __FreeBSD_version < 400000
3914 fail;
3915 #endif
3916 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
3917
3918     AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
3919
3920     if test $emacs_cv_freebsd_terminfo = yes; then
3921       LIBS_TERMCAP="-lncurses"
3922     else
3923       TERMINFO=no
3924       LIBS_TERMCAP="-ltermcap"
3925     fi
3926     ;;
3927
3928   mingw32)
3929     TERMINFO=no
3930     LIBS_TERMCAP=
3931     ;;
3932
3933   netbsd)
3934     if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
3935       TERMINFO=no
3936       LIBS_TERMCAP="-ltermcap"
3937     fi
3938     ;;
3939
3940   openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
3941
3942   ## hpux: Make sure we get select from libc rather than from libcurses
3943   ##  because libcurses on HPUX 10.10 has a broken version of select.
3944   ##  We used to use -lc -lcurses, but this may be cleaner.
3945   ## FIXME?  But TERMINFO = yes on hpux (it used to be explicitly
3946   # set that way, now it uses the default).  Isn't this a contradiction?
3947   hpux*) LIBS_TERMCAP="-ltermcap" ;;
3948
3949 esac
3950
3951 TERMCAP_OBJ=tparam.o
3952 if test $TERMINFO = yes; then
3953   AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
3954   TERMCAP_OBJ=terminfo.o
3955 fi
3956 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
3957   AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
3958 fi
3959 AC_SUBST(LIBS_TERMCAP)
3960 AC_SUBST(TERMCAP_OBJ)
3961
3962 # GNU/Linux-specific timer functions.
3963 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
3964   [AC_COMPILE_IFELSE(
3965      [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
3966                       ]],
3967                       [[timerfd_create (CLOCK_REALTIME,
3968                                         TFD_CLOEXEC | TFD_NONBLOCK);
3969                         timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
3970      [emacs_cv_have_timerfd=yes],
3971      [emacs_cv_have_timerfd=no])])
3972 if test "$emacs_cv_have_timerfd" = yes; then
3973   AC_DEFINE([HAVE_TIMERFD], 1,
3974     [Define to 1 if timerfd functions are supported as in GNU/Linux.])
3975 fi
3976
3977 # Alternate stack for signal handlers.
3978 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
3979                [emacs_cv_alternate_stack],
3980   [AC_COMPILE_IFELSE(
3981      [AC_LANG_PROGRAM([[#include <signal.h>
3982                       ]],
3983                       [[stack_t ss;
3984                         struct sigaction sa;
3985                         ss.ss_sp = malloc (SIGSTKSZ);
3986                         ss.ss_size = SIGSTKSZ;
3987                         sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
3988                         sigaltstack (&ss, 0);
3989                         sigaction (SIGSEGV, &sa, 0);]])],
3990      [emacs_cv_alternate_stack=yes],
3991      [emacs_cv_alternate_stack=no])])
3992
3993 # Do we have res_init, for detecting changes in /etc/resolv.conf?
3994 # On Darwin, res_init appears not to be useful: see bug#562 and
3995 # http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg01467.html
3996 resolv=no
3997
3998 if test $opsys != darwin; then
3999
4000   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
4001 #include <arpa/nameser.h>
4002 #include <resolv.h>]],
4003     [[return res_init();]])],
4004     have_res_init=yes, have_res_init=no)
4005   if test "$have_res_init" = no; then
4006     OLIBS="$LIBS"
4007     LIBS="$LIBS -lresolv"
4008     AC_MSG_CHECKING(for res_init with -lresolv)
4009     AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
4010 #include <arpa/nameser.h>
4011 #include <resolv.h>]],
4012       [[return res_init();]])],
4013       have_res_init=yes, have_res_init=no)
4014     AC_MSG_RESULT($have_res_init)
4015     if test "$have_res_init" = yes ; then
4016       resolv=yes
4017     fi
4018     LIBS="$OLIBS"
4019   fi
4020
4021   if test "$have_res_init" = yes; then
4022     AC_DEFINE(HAVE_RES_INIT, 1, [Define to 1 if res_init is available.])
4023   fi
4024 fi                              dnl !darwin
4025
4026 # Do we need the Hesiod library to provide the support routines?
4027 dnl FIXME?  Should we be skipping this on Darwin too?
4028 LIBHESIOD=
4029 if test "$with_hesiod" != no ; then
4030   # Don't set $LIBS here -- see comments above.  FIXME which comments?
4031   AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4032      [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4033                   [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4034   if test "$resolv" = yes ; then
4035     RESOLVLIB=-lresolv
4036   else
4037     RESOLVLIB=
4038   fi
4039   AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4040         hesiod=yes, :, $RESOLVLIB)])
4041
4042   if test x"$hesiod" = xyes; then
4043     LIBHESIOD=-lhesiod
4044   fi
4045 fi
4046 AC_SUBST(LIBHESIOD)
4047
4048 # Do we need libresolv (due to res_init or Hesiod)?
4049 if test "$resolv" = yes && test $opsys != darwin; then
4050   LIBRESOLV=-lresolv
4051 else
4052   LIBRESOLV=
4053 fi
4054 AC_SUBST(LIBRESOLV)
4055
4056 # These tell us which Kerberos-related libraries to use.
4057 COM_ERRLIB=
4058 CRYPTOLIB=
4059 KRB5LIB=
4060 DESLIB=
4061 KRB4LIB=
4062
4063 if test "${with_kerberos}" != no; then
4064   OLD_LIBS=$LIBS
4065   AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4066   if test $have_com_err = yes; then
4067     COM_ERRLIB=-lcom_err
4068     LIBS="$COM_ERRLIB $LIBS"
4069   fi
4070   AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4071   if test $have_crypto = yes; then
4072     CRYPTOLIB=-lcrypto
4073     LIBS="$CRYPTOLIB $LIBS"
4074   fi
4075   AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4076   if test $have_k5crypto = yes; then
4077     CRYPTOLIB=-lk5crypto
4078     LIBS="$CRYPTOLIB $LIBS"
4079   fi
4080   AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4081   if test $have_krb5=yes; then
4082     KRB5LIB=-lkrb5
4083     LIBS="$KRB5LIB $LIBS"
4084   fi
4085   dnl FIXME Simplify.  Does not match 22 logic, thanks to default_off?
4086   if test "${with_kerberos5}" = no; then
4087     AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4088     if test $have_des425 = yes; then
4089       DESLIB=-ldes425
4090       LIBS="$DESLIB $LIBS"
4091     else
4092       AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4093       if test $have_des = yes; then
4094         DESLIB=-ldes
4095         LIBS="$DESLIB $LIBS"
4096       fi
4097     fi
4098     AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4099     if test $have_krb4 = yes; then
4100       KRB4LIB=-lkrb4
4101       LIBS="$KRB4LIB $LIBS"
4102     else
4103       AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4104       if test $have_krb = yes; then
4105         KRB4LIB=-lkrb
4106         LIBS="$KRB4LIB $LIBS"
4107       fi
4108     fi
4109   fi
4110
4111   if test "${with_kerberos5}" != no; then
4112     AC_CHECK_HEADERS(krb5.h,
4113       [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4114                         [#include <krb5.h>])])
4115   else
4116     AC_CHECK_HEADERS(krb.h,,
4117                      [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4118                                        [AC_CHECK_HEADERS(kerberos/krb.h)])])
4119   fi
4120   AC_CHECK_HEADERS(com_err.h)
4121   LIBS=$OLD_LIBS
4122 fi
4123
4124 AC_SUBST(COM_ERRLIB)
4125 AC_SUBST(CRYPTOLIB)
4126 AC_SUBST(KRB5LIB)
4127 AC_SUBST(DESLIB)
4128 AC_SUBST(KRB4LIB)
4129
4130 AC_CHECK_HEADERS(valgrind/valgrind.h)
4131
4132 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4133
4134 AC_CHECK_FUNCS_ONCE(tzset)
4135
4136 ok_so_far=yes
4137 AC_CHECK_FUNC(socket, , ok_so_far=no)
4138 if test $ok_so_far = yes; then
4139   AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4140 fi
4141 if test $ok_so_far = yes; then
4142   AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4143 fi
4144 if test $ok_so_far = yes; then
4145 dnl Fixme: Not used.  Should this be HAVE_SOCKETS?
4146   AC_DEFINE(HAVE_INET_SOCKETS, 1,
4147             [Define to 1 if you have inet sockets.])
4148 fi
4149
4150 AC_FUNC_FORK
4151
4152 AC_CHECK_FUNCS(snprintf)
4153
4154 dnl Check for glib.  This differs from other library checks in that
4155 dnl Emacs need not link to glib unless some other library is already
4156 dnl linking to glib.  Although glib provides no facilities that Emacs
4157 dnl needs for its own purposes, when glib is present Emacs needs to
4158 dnl use primitives like g_main_context_query to avoid clashing with
4159 dnl glib at a low level.
4160 dnl
4161 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4162 XGSELOBJ=
4163 OLDCFLAGS="$CFLAGS"
4164 OLDLIBS="$LIBS"
4165 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4166 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4167 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4168 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4169 AC_MSG_CHECKING([whether GLib is linked in])
4170 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4171         [[#include <glib.h>
4172         ]],
4173         [[g_print ("Hello world");]])],
4174      [links_glib=yes],
4175      [links_glib=no])
4176 AC_MSG_RESULT([$links_glib])
4177 if test "${links_glib}" = "yes"; then
4178   AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4179   if test "$HAVE_NS" = no;then
4180     XGSELOBJ=xgselect.o
4181   fi
4182 fi
4183 CFLAGS="$OLDCFLAGS"
4184 LIBS="$OLDLIBS"
4185 AC_SUBST(XGSELOBJ)
4186
4187 dnl Adapted from Haible's version.
4188 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4189   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4190     [[char* cs = nl_langinfo(CODESET);]])],
4191     emacs_cv_langinfo_codeset=yes,
4192     emacs_cv_langinfo_codeset=no)
4193   ])
4194 if test $emacs_cv_langinfo_codeset = yes; then
4195   AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4196     [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4197 fi
4198
4199 AC_TYPE_MBSTATE_T
4200
4201 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4202 dnl how the tty code is related to POSIX and/or other versions of termios.
4203 dnl The following looks like a useful start.
4204 dnl
4205 dnl AC_SYS_POSIX_TERMIOS
4206 dnl if test $ac_cv_sys_posix_termios = yes; then
4207 dnl    AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4208 dnl                                and macros for terminal control.])
4209 dnl    AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4210 dnl fi
4211
4212 dnl Turned on June 1996 supposing nobody will mind it.
4213 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4214 if test "${opsys}" != "mingw32"; then
4215    AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4216      in the full name stands for the login id.])
4217 fi
4218
4219 dnl Everybody supports this, except MS.
4220 dnl Seems like the kind of thing we should be testing for, though.
4221 ## Note: PTYs are broken on darwin <6.  Use at your own risk.
4222 if test "${opsys}" != "mingw32"; then
4223   AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4224 fi
4225
4226 dnl Everybody supports this, except MS-DOS.
4227 dnl Seems like the kind of thing we should be testing for, though.
4228 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4229 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4230   4.2-compatible sockets.])
4231
4232 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4233
4234 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4235   a null file, or a data sink.])
4236 if test "${opsys}" = "mingw32"; then
4237   AC_DEFINE(NULL_DEVICE, ["NUL:"])
4238 else
4239   AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4240 fi
4241
4242 if test "${opsys}" = "mingw32"; then
4243   SEPCHAR=';'
4244 else
4245   SEPCHAR=':'
4246 fi
4247 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4248 dnl This is for MinGW, and is used in test/automated/Makefile.in.
4249 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4250 dnl decides that a command-line argument to be passed to a MinGW program
4251 dnl is a PATH-style list of directories.  But that heuristics plays it
4252 dnl safe, and only does the replacement when it is _absolutely_ sure it
4253 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4254 dnl which breaks in-tree builds.  So we do this manually instead.
4255 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4256 dnl be computed as ':' in MSYS Bash.
4257 AC_SUBST(SEPCHAR)
4258
4259 dnl Everybody supports this, except MS-DOS.
4260 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4261
4262 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4263
4264
4265 AC_DEFINE(DIRECTORY_SEP, ['/'],
4266   [Character that separates directories in a file name.])
4267
4268 if test "${opsys}" = "mingw32"; then
4269   AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4270     [Returns true if character is a device separator.])
4271
4272   AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4273     [Returns true if character is a directory separator.])
4274
4275   AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4276     [Returns true if character is any form of separator.])
4277 else
4278   AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4279     [Returns true if character is a device separator.])
4280
4281   AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4282     [Returns true if character is a directory separator.])
4283
4284   AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4285     [Returns true if character is any form of separator.])
4286 fi
4287
4288 AH_TEMPLATE(NO_EDITRES, [Define if XEditRes should not be used.])
4289
4290 case $opsys in
4291   aix4-2)
4292     dnl Unfortunately without libXmu we cannot support EditRes.
4293     if test "x$ac_cv_search_XmuConvertStandardSelection" = xno; then
4294       AC_DEFINE(NO_EDITRES, 1)
4295     fi
4296     ;;
4297
4298   hpux*)
4299     dnl Assar Westerlund <assar@sics.se> says this is necessary for
4300     dnl HP-UX 10.20, and that it works for HP-UX 0 as well.
4301     AC_DEFINE(NO_EDITRES, 1)
4302     ;;
4303 esac
4304
4305
4306 case $opsys in
4307   irix6-5 | sol2* | unixware )
4308     dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4309     dnl instead, there's a system variable _sys_nsig.  Unfortunately, we
4310     dnl need the constant to dimension an array.  So wire in the appropriate
4311     dnl value here.
4312     AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4313     ;;
4314 esac
4315
4316 emacs_broken_SIGIO=no
4317
4318 case $opsys in
4319   dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4320   dnl See eg <http://article.gmane.org/gmane.os.openbsd.ports/46831>.
4321   hpux* | irix6-5 | nacl | openbsd | sol2* | unixware )
4322     emacs_broken_SIGIO=yes
4323     ;;
4324
4325   aix4-2)
4326     dnl On AIX Emacs uses the gmalloc.c malloc implementation.  But given
4327     dnl the way this system works, libc functions that return malloced
4328     dnl memory use the libc malloc implementation. Calling xfree or
4329     dnl xrealloc on the results of such functions results in a crash.
4330     dnl
4331     dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4332     dnl but that does not currently work on this system.
4333     dnl
4334     dnl It is possible to completely override the malloc implementation on
4335     dnl AIX, but that involves putting the malloc functions in a shared
4336     dnl library and setting the MALLOCTYPE environment variable to point to
4337     dnl that shared library.
4338     dnl
4339     dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4340     dnl to avoid a crash just use the Emacs implementation for that function.
4341     dnl
4342     dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4343     dnl of this file, so that we do not check for get_current_dir_name
4344     dnl on AIX.  But that might be fragile if something else ends
4345     dnl up testing for get_current_dir_name as a dependency.
4346     AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4347       get_current_dir_name should not be used.])
4348     ;;
4349
4350   freebsd)
4351     dnl Circumvent a bug in FreeBSD.  In the following sequence of
4352     dnl writes/reads on a PTY, read(2) returns bogus data:
4353     dnl
4354     dnl write(2)  1022 bytes
4355     dnl write(2)   954 bytes, get EAGAIN
4356     dnl read(2)   1024 bytes in process_read_output
4357     dnl read(2)     11 bytes in process_read_output
4358     dnl
4359     dnl That is, read(2) returns more bytes than have ever been written
4360     dnl successfully.  The 1033 bytes read are the 1022 bytes written
4361     dnl successfully after processing (for example with CRs added if the
4362     dnl terminal is set up that way which it is here).  The same bytes will
4363     dnl be seen again in a later read(2), without the CRs.
4364     AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4365       work around an issue when reading from a PTY.])
4366     ;;
4367 esac
4368
4369 case $opsys in
4370   gnu-* | sol2-10 )
4371     dnl FIXME Can't we test if this exists (eg /proc/$$)?
4372     AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4373   ;;
4374 esac
4375
4376 case $opsys in
4377   darwin | dragonfly | freebsd | netbsd | openbsd )
4378     AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4379       close a pty to make it a controlling terminal (it is already a
4380       controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4381   ;;
4382 esac
4383
4384 dnl FIXME Surely we can test for this rather than hard-code it.
4385 case $opsys in
4386   netbsd | openbsd) sound_device="/dev/audio" ;;
4387   *) sound_device="/dev/dsp" ;;
4388 esac
4389
4390 dnl Used in sound.c
4391 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4392   [Name of the default sound device.])
4393
4394
4395 dnl Emacs can read input using SIGIO and buffering characters itself,
4396 dnl or using CBREAK mode and making C-g cause SIGINT.
4397 dnl The choice is controlled by the variable interrupt_input.
4398 dnl
4399 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4400 dnl
4401 dnl Emacs uses the presence of the USABLE_SIGIO macro
4402 dnl to indicate whether or not signal-driven I/O is possible.  It uses
4403 dnl INTERRUPT_INPUT to decide whether to use it by default.
4404 dnl
4405 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4406 dnl CBREAK mode has two disadvantages
4407 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4408 dnl I hear that in system V this problem does not exist.
4409 dnl 2) Control-G causes output to be discarded.
4410 dnl I do not know whether this can be fixed in system V.
4411 dnl
4412 dnl Another method of doing input is planned but not implemented.
4413 dnl It would have Emacs fork off a separate process
4414 dnl to read the input and send it to the true Emacs process
4415 dnl through a pipe.
4416 case $opsys in
4417   darwin | gnu-linux | gnu-kfreebsd )
4418     AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4419   ;;
4420 esac
4421
4422
4423 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4424 dnl as 'NO', we must define NARROWPROTO manually.  Such a define is
4425 dnl generated in the Makefile generated by 'xmkmf'.  If we don't define
4426 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4427 dnl taking float or double parameters.
4428 case $opsys in
4429   cygwin|gnu|gnu-linux|gnu-kfreebsd|irix6-5|freebsd|netbsd|openbsd)
4430     AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4431       file defines 'NeedWidePrototypes' as 'NO'.])
4432   ;;
4433 esac
4434
4435
4436 dnl Used in process.c, this must be a loop, even if it only runs once.
4437 dnl (Except on SGI; see below.  Take that, clarity and consistency!)
4438 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4439 dnl Only used if !PTY_ITERATION.  Iterate from FIRST_PTY_LETTER to z,
4440 dnl trying suffixes 0-16.
4441 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4442   first PTY, if PTYs are supported.])
4443 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4444 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4445   end of a PTY, if non-standard.])
4446 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4447   end of a PTY, if non-standard.])
4448
4449 case $opsys in
4450   aix4-2 )
4451     AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4452     dnl You allocate a pty by opening /dev/ptc to get the master side.
4453     dnl To get the name of the slave side, you just ttyname() the master side.
4454     AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4455     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4456     ;;
4457
4458   cygwin )
4459     AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4460     dnl multi-line AC_DEFINEs are hard. :(
4461     AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (false)])
4462     AC_DEFINE(PTY_NAME_SPRINTF, [])
4463     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4464     ;;
4465
4466   gnu | openbsd )
4467     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4468     ;;
4469
4470   gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4471     dnl if HAVE_GRANTPT
4472     if test "x$ac_cv_func_grantpt" = xyes; then
4473       AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4474       AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4475       dnl Note that grantpt and unlockpt may fork.  We must block SIGCHLD
4476       dnl to prevent sigchld_handler from intercepting the child's death.
4477       AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptyname = 0; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); if (grantpt (fd) != -1 && unlockpt (fd) != -1) ptyname = ptsname(fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (!ptyname) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4478       dnl if HAVE_POSIX_OPENPT
4479       if test "x$ac_cv_func_posix_openpt" = xyes; then
4480         AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4481         AC_DEFINE(PTY_NAME_SPRINTF, [])
4482       dnl if HAVE_GETPT
4483       elif test "x$ac_cv_func_getpt" = xyes; then
4484         AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4485         AC_DEFINE(PTY_NAME_SPRINTF, [])
4486       else
4487         AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4488       fi
4489     else
4490       AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4491     fi
4492     ;;
4493
4494   hpux*)
4495     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4496     AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4497     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4498     ;;
4499
4500   irix6-5 )
4501     dnl It looks like this cannot be right, because it is not a loop.
4502     dnl However, process.c actually does this:
4503     dnl # ifndef __sgi
4504     dnl   continue;
4505     dnl # else
4506     dnl   return -1;
4507     dnl # endif
4508     dnl which presumably makes it OK, since irix == sgi (?).
4509     dnl FIXME it seems like this special treatment is unnecessary?
4510     dnl Why can't irix use a single-trip loop like eg cygwin?
4511     AC_DEFINE(PTY_ITERATION, [])
4512     dnl Not used, because PTY_ITERATION is defined.
4513     AC_DEFINE(FIRST_PTY_LETTER, ['q'])
4514     AC_DEFINE(PTY_OPEN, [ { struct sigaction ocstat, cstat; struct stat stb; char * name; sigemptyset(&cstat.sa_mask); cstat.sa_handler = SIG_DFL; cstat.sa_flags = 0; sigaction(SIGCHLD, &cstat, &ocstat); name = _getpty (&fd, O_RDWR | O_NDELAY, 0600, 0); sigaction(SIGCHLD, &ocstat, (struct sigaction *)0); if (name == 0) return -1; if (fd < 0) return -1; if (fstat (fd, &stb) < 0) return -1; strcpy (pty_name, name); }])
4515     dnl No need to get the pty name at all.
4516     AC_DEFINE(PTY_NAME_SPRINTF, [])
4517     dnl No need to use sprintf to get the tty name--we get that from _getpty.
4518     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4519     ;;
4520
4521   sol2* )
4522     dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4523     dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4524     dnl from intercepting that death.  If any child but grantpt's should die
4525     dnl within, it should be caught after sigrelse(2).
4526     AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4527     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1 || unlockpt (fd) == -1 || !(ptyname = ptsname (fd))) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4528     ;;
4529
4530   unixware )
4531     dnl Comments are as per sol2*.
4532     AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4533     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1) fatal("could not grant slave pty"); if (unlockpt(fd) == -1) fatal("could not unlock slave pty"); if (!(ptyname = ptsname(fd))) fatal ("could not enable slave pty"); snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4534     ;;
4535 esac
4536
4537
4538 case $opsys in
4539   sol2* | unixware )
4540     dnl This change means that we don't loop through allocate_pty too
4541     dnl many times in the (rare) event of a failure.
4542     AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4543     AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4544     dnl Push various streams modules onto a PTY channel.  Used in process.c.
4545     AC_DEFINE(SETUP_SLAVE_PTY, [if (ioctl (forkin, I_PUSH, "ptem") == -1) fatal ("ioctl I_PUSH ptem"); if (ioctl (forkin, I_PUSH, "ldterm") == -1) fatal ("ioctl I_PUSH ldterm"); if (ioctl (forkin, I_PUSH, "ttcompat") == -1) fatal ("ioctl I_PUSH ttcompat");], [How to set up a slave PTY, if needed.])
4546     ;;
4547 esac
4548
4549
4550 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4551 "typing" a signal character on the pty.])
4552
4553 case $opsys in
4554   dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4555   dnl thomas@mathematik.uni-bremen.de says this is needed for IRIX.
4556   aix4-2 | cygwin | gnu | irix6-5 | dragonfly | freebsd | netbsd | openbsd | darwin )
4557     AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4558     ;;
4559
4560   dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4561   dnl FIXME Does gnu-kfreebsd have linux/version.h?  It seems unlikely...
4562   gnu-linux | gnu-kfreebsd )
4563
4564     AC_MSG_CHECKING([for signals via characters])
4565     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4566 #include <linux/version.h>
4567 #if LINUX_VERSION_CODE < 0x20400
4568 # error "Linux version too old"
4569 #endif
4570       ]], [[]])], emacs_signals_via_chars=yes, emacs_signals_via_chars=no)
4571
4572     AC_MSG_RESULT([$emacs_signals_via_chars])
4573     test $emacs_signals_via_chars = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4574     ;;
4575 esac
4576
4577
4578 AH_TEMPLATE(TAB3, [Undocumented.])
4579
4580 case $opsys in
4581   darwin) AC_DEFINE(TAB3, OXTABS) ;;
4582
4583   gnu | dragonfly | freebsd | netbsd | openbsd )
4584     AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4585     AC_DEFINE(TAB3, OXTABS)
4586     ;;
4587
4588   gnu-linux | gnu-kfreebsd )
4589     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4590 #ifndef __ia64__
4591 # error "not ia64"
4592 #endif
4593       ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4594         [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4595         [Mark a secondary stack, like the register stack on the ia64.]), [])
4596     ;;
4597
4598   hpux*)
4599     AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4600       run_time_remap; for HPUX.])
4601     ;;
4602 esac
4603
4604
4605 dnl This won't be used automatically yet.  We also need to know, at least,
4606 dnl that the stack is continuous.
4607 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4608   registers relevant for conservative garbage collection in the jmp_buf.])
4609
4610
4611 case $opsys in
4612   dnl Not all the architectures are tested, but there are Debian packages
4613   dnl for SCM and/or Guile on them, so the technique must work.  See also
4614   dnl comments in alloc.c concerning setjmp and gcc.
4615   dnl Fixme: it's probably safe to just use the GCC conditional below.
4616   gnu-linux | gnu-kfreebsd )
4617     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4618 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4619   || defined __alpha__ || defined __mips__ || defined __s390__ \
4620   || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4621   || defined __ia64__ || defined __sh__
4622 /* ok */
4623 #else
4624 # error "setjmp not known to work on this arch"
4625 #endif
4626     ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4627     ;;
4628 esac
4629
4630
4631 if test x$GCC = xyes; then
4632    dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4633    AC_DEFINE(GC_SETJMP_WORKS, 1)
4634 else
4635   case $opsys in
4636     dnl irix: Tested on Irix 6.5.  SCM worked on earlier versions.
4637     aix* | dragonfly | freebsd | netbsd | openbsd | irix6-5 | sol2* )
4638       AC_DEFINE(GC_SETJMP_WORKS, 1)
4639       ;;
4640   esac
4641 fi                              dnl GCC?
4642
4643 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4644 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4645   [AC_LINK_IFELSE(
4646      [AC_LANG_PROGRAM(
4647        [[#include <setjmp.h>
4648          #ifdef __MINGW32__
4649          # define _longjmp longjmp
4650          #endif
4651        ]],
4652        [[jmp_buf j;
4653          if (! _setjmp (j))
4654            _longjmp (j, 1);]])],
4655      [emacs_cv_func__setjmp=yes],
4656      [emacs_cv_func__setjmp=no])])
4657 if test $emacs_cv_func__setjmp = yes; then
4658   AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4659 fi
4660
4661 # We need to preserve signal mask to handle C stack overflows.
4662 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4663   [AC_LINK_IFELSE(
4664      [AC_LANG_PROGRAM(
4665        [[#include <setjmp.h>
4666        ]],
4667        [[sigjmp_buf j;
4668          if (! sigsetjmp (j, 1))
4669            siglongjmp (j, 1);]])],
4670      [emacs_cv_func_sigsetjmp=yes],
4671      [emacs_cv_func_sigsetjmp=no])])
4672 if test $emacs_cv_func_sigsetjmp = yes; then
4673   AC_DEFINE([HAVE_SIGSETJMP], 1,
4674     [Define to 1 if sigsetjmp and siglongjmp work.])
4675 fi
4676
4677 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4678   yes,yes,* | *,*,mingw32)
4679     AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4680       [Define to 1 if C stack overflow can be handled in some cases.]);;
4681 esac
4682
4683 case $opsys in
4684   sol2* | unixware )
4685     dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4686     dnl subprocesses the usual way.  But TIOCSIGNAL does work for PTYs,
4687     dnl and this is all we need.
4688     AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4689     ;;
4690 esac
4691
4692
4693 case $opsys in
4694   hpux* | sol2* )
4695     dnl Used in xfaces.c.
4696     AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4697       some systems, where it requires time.h.])
4698     ;;
4699 esac
4700
4701
4702 dnl Define symbols to identify the version of Unix this is.
4703 dnl Define all the symbols that apply correctly.
4704 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4705 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4706 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4707 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4708
4709 case $opsys in
4710   aix4-2)
4711     AC_DEFINE(USG, [])
4712     dnl This symbol should be defined on AIX Version 3  ???????
4713     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4714 #ifndef _AIX
4715 # error "_AIX not defined"
4716 #endif
4717     ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4718     ;;
4719
4720   cygwin)
4721     AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4722     ;;
4723
4724   darwin)
4725     dnl Not __APPLE__, as this may not be defined on non-OSX Darwin.
4726     dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4727     dnl distinguish OS X from pure Darwin.
4728     AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4729     ;;
4730
4731   gnu-linux | gnu-kfreebsd )
4732     AC_DEFINE(USG, [])
4733     AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4734     ;;
4735
4736   hpux*)
4737     AC_DEFINE(USG, [])
4738     AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4739     ;;
4740
4741   irix6-5)
4742     AC_DEFINE(USG, [])
4743     AC_DEFINE(USG5_4, [])
4744     AC_DEFINE(IRIX6_5, [], [Define if the system is IRIX.])
4745     ;;
4746
4747   mingw32)
4748     AC_DEFINE(DOS_NT, [])
4749     AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4750     if test "x$ac_enable_checking" != "x" ; then
4751       AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4752     fi
4753     ;;
4754
4755   sol2*)
4756     AC_DEFINE(USG, [])
4757     AC_DEFINE(USG5_4, [])
4758     AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4759     ;;
4760
4761   unixware)
4762     AC_DEFINE(USG, [])
4763     AC_DEFINE(USG5_4, [])
4764     ;;
4765 esac
4766
4767 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4768   [case $opsys in
4769      aix4-2 | nacl)
4770        dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4771        emacs_cv_usable_FIONREAD=no
4772        ;;
4773
4774      mingw32)
4775        emacs_cv_usable_FIONREAD=yes
4776        ;;
4777
4778      *)
4779        AC_COMPILE_IFELSE(
4780          [AC_LANG_PROGRAM([[#include <sys/types.h>
4781                             #include <sys/ioctl.h>
4782                             #ifdef USG5_4
4783                             # include <sys/filio.h>
4784                             #endif
4785                           ]],
4786                           [[int foo = ioctl (0, FIONREAD, &foo);]])],
4787          [emacs_cv_usable_FIONREAD=yes],
4788          [emacs_cv_usable_FIONREAD=no])
4789        ;;
4790    esac])
4791 if test $emacs_cv_usable_FIONREAD = yes; then
4792   AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4793
4794   if test $emacs_broken_SIGIO = no; then
4795     AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4796       [AC_COMPILE_IFELSE(
4797          [AC_LANG_PROGRAM([[#include <fcntl.h>
4798                             #include <signal.h>
4799                           ]],
4800                           [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4801          [emacs_cv_usable_SIGIO=yes],
4802          [emacs_cv_usable_SIGIO=no])],
4803       [emacs_cv_usable_SIGIO=yes],
4804       [emacs_cv_usable_SIGIO=no])
4805     if test $emacs_cv_usable_SIGIO = yes; then
4806       AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4807     fi
4808   fi
4809 fi
4810
4811 case $opsys in
4812   hpux11)
4813     dnl It works to open the pty's tty in the parent (Emacs), then
4814     dnl close and reopen it in the child.
4815     AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4816       works to open a pty's tty in the parent process, then close and
4817       reopen it in the child.])
4818     ;;
4819
4820   irix6-5)
4821     AC_DEFINE(PREFER_VSUSP, 1, [Define if process_send_signal should
4822       use VSUSP instead of VSWTCH.])
4823     ;;
4824
4825   sol2-10)
4826     AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4827       on Solaris.])
4828     ;;
4829 esac
4830
4831 # Set up the CFLAGS for real compilation, so we can substitute it.
4832 CFLAGS="$REAL_CFLAGS"
4833 CPPFLAGS="$REAL_CPPFLAGS"
4834 LIBS="$REAL_LIBS"
4835
4836 ## Hack to detect a buggy GCC version.
4837 if test "$GCC" = yes && \
4838    $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4839   case $CFLAGS in
4840     *-fno-optimize-sibling-calls*) ;;
4841     *-O@<:@23@:>@*)
4842       AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4843   esac
4844 fi
4845
4846 version=$PACKAGE_VERSION
4847
4848 copyright="Copyright (C) 2016 Free Software Foundation, Inc."
4849 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4850   [Short copyright string for this version of Emacs.])
4851 AC_SUBST(copyright)
4852
4853 ### Specify what sort of things we'll be editing into Makefile and config.h.
4854 ### Use configuration here uncanonicalized to avoid exceeding size limits.
4855 AC_SUBST(version)
4856 AC_SUBST(configuration)
4857 ## Unused?
4858 AC_SUBST(canonical)
4859 AC_SUBST(srcdir)
4860 AC_SUBST(prefix)
4861 AC_SUBST(exec_prefix)
4862 AC_SUBST(bindir)
4863 AC_SUBST(datadir)
4864 AC_SUBST(sharedstatedir)
4865 AC_SUBST(libexecdir)
4866 AC_SUBST(mandir)
4867 AC_SUBST(infodir)
4868 AC_SUBST(lispdir)
4869 AC_SUBST(standardlisppath)
4870 AC_SUBST(locallisppath)
4871 AC_SUBST(lisppath)
4872 AC_SUBST(x_default_search_path)
4873 AC_SUBST(etcdir)
4874 AC_SUBST(archlibdir)
4875 AC_SUBST(etcdocdir)
4876 AC_SUBST(bitmapdir)
4877 AC_SUBST(gamedir)
4878 AC_SUBST(gameuser)
4879 AC_SUBST(gamegroup)
4880 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
4881 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
4882 ## end of LIBX_BASE, but nothing ever set it.
4883 AC_SUBST(LD_SWITCH_X_SITE)
4884 AC_SUBST(C_SWITCH_X_SITE)
4885 AC_SUBST(GNUSTEP_CFLAGS)
4886 AC_SUBST(CFLAGS)
4887 ## Used in lwlib/Makefile.in.
4888 AC_SUBST(X_TOOLKIT_TYPE)
4889 AC_SUBST(ns_appdir)
4890 AC_SUBST(ns_appbindir)
4891 AC_SUBST(ns_appresdir)
4892 AC_SUBST(ns_appsrc)
4893 AC_SUBST(GNU_OBJC_CFLAGS)
4894 AC_SUBST(OTHER_FILES)
4895
4896 if test -n "${term_header}"; then
4897     AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
4898         [Define to the header for the built-in window system.])
4899 fi
4900
4901 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION,  "${canonical}",
4902                    [Define to the canonical Emacs configuration name.])
4903 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
4904                    [Define to the options passed to configure.])
4905 AH_TEMPLATE(config_opsysfile, [Some platforms that do not use configure
4906   define this to include extra configuration information.])
4907
4908 case $opsys in
4909   mingw32)
4910     AC_DEFINE(config_opsysfile, <ms-w32.h>, [])
4911     ;;
4912 esac
4913
4914 XMENU_OBJ=
4915 XOBJ=
4916 FONT_OBJ=
4917 if test "${HAVE_X_WINDOWS}" = "yes" ; then
4918   AC_DEFINE(HAVE_X_WINDOWS, 1,
4919             [Define to 1 if you want to use the X window system.])
4920   XMENU_OBJ=xmenu.o
4921   XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
4922   FONT_OBJ=xfont.o
4923   if test "$HAVE_CAIRO" = "yes"; then
4924     FONT_OBJ="ftfont.o ftcrfont.o"
4925   elif test "$HAVE_XFT" = "yes"; then
4926     FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
4927   elif test "$HAVE_FREETYPE" = "yes"; then
4928     FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
4929   fi
4930   AC_SUBST(FONT_OBJ)
4931 fi
4932 AC_SUBST(XMENU_OBJ)
4933 AC_SUBST(XOBJ)
4934 AC_SUBST(FONT_OBJ)
4935
4936 WIDGET_OBJ=
4937 MOTIF_LIBW=
4938 if test "${USE_X_TOOLKIT}" != "none" ; then
4939   WIDGET_OBJ=widget.o
4940   AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
4941   if test "${USE_X_TOOLKIT}" = "LUCID"; then
4942     AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
4943   elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
4944     AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
4945     MOTIF_LIBW=-lXm
4946     case "$opsys" in
4947       gnu-linux)
4948         ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
4949         MOTIF_LIBW="$MOTIF_LIBW -lXpm"
4950         ;;
4951
4952       unixware)
4953         ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
4954         ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
4955         MOTIF_LIBW="MOTIF_LIBW -lXimp"
4956         ;;
4957
4958       aix4-2)
4959         ## olson@mcs.anl.gov says -li18n is needed by -lXm.
4960         MOTIF_LIBW="$MOTIF_LIBW -li18n"
4961         ;;
4962     esac
4963     MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
4964   fi
4965 fi
4966 AC_SUBST(WIDGET_OBJ)
4967
4968 TOOLKIT_LIBW=
4969 case "$USE_X_TOOLKIT" in
4970   MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
4971   LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
4972   none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
4973 esac
4974 if test "$HAVE_XWIDGETS" = "yes"; then
4975   TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
4976 fi
4977 AC_SUBST(TOOLKIT_LIBW)
4978
4979 if test "${opsys}" != "mingw32"; then
4980   if test "$USE_X_TOOLKIT" = "none"; then
4981     LIBXT_OTHER="\$(LIBXSM)"
4982   else
4983     LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
4984   fi
4985 fi
4986 AC_SUBST(LIBXT_OTHER)
4987
4988 if test "${HAVE_X11}" = "yes" ; then
4989   AC_DEFINE(HAVE_X11, 1,
4990             [Define to 1 if you want to use version 11 of X windows.])
4991   LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
4992 else
4993   LIBX_OTHER=
4994 fi
4995 AC_SUBST(LIBX_OTHER)
4996
4997 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
4998   LIBXMENU=
4999 elif test "$USE_X_TOOLKIT" = none; then
5000   LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5001 else
5002   LIBXMENU='$(lwlibdir)/liblw.a'
5003 fi
5004 AC_SUBST(LIBXMENU)
5005
5006 AC_CACHE_CHECK([for struct alignment],
5007   [emacs_cv_struct_alignment],
5008   [AC_COMPILE_IFELSE(
5009      [AC_LANG_PROGRAM([[#include <stddef.h>
5010                         struct __attribute__ ((aligned (8))) s { char c; };
5011                         struct t { char c; struct s s; };
5012                         char verify[offsetof (struct t, s) == 8 ? 1 : -1];
5013                       ]])],
5014      [emacs_cv_struct_alignment=yes],
5015      [emacs_cv_struct_alignment=no])])
5016 if test "$emacs_cv_struct_alignment" = yes; then
5017   AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5018     [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5019      structure to an N-byte boundary.])
5020 fi
5021
5022 if test "${GNU_MALLOC}" = "yes" ; then
5023   AC_DEFINE(GNU_MALLOC, 1,
5024             [Define to 1 if you want to use the GNU memory allocator.])
5025 fi
5026
5027 RALLOC_OBJ=
5028 if test "${REL_ALLOC}" = "yes" ; then
5029   AC_DEFINE(REL_ALLOC, 1,
5030             [Define REL_ALLOC if you want to use the relocating allocator for
5031              buffer space.])
5032
5033   test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5034 fi
5035 AC_SUBST(RALLOC_OBJ)
5036
5037 if test "$opsys" = "cygwin"; then
5038   CYGWIN_OBJ="sheap.o cygw32.o"
5039   ## Cygwin differs because of its unexec().
5040   PRE_ALLOC_OBJ=
5041   POST_ALLOC_OBJ=lastfile.o
5042 elif test "$opsys" = "mingw32"; then
5043   CYGWIN_OBJ=
5044   PRE_ALLOC_OBJ=
5045   POST_ALLOC_OBJ=lastfile.o
5046 else
5047   CYGWIN_OBJ=
5048   PRE_ALLOC_OBJ=lastfile.o
5049   POST_ALLOC_OBJ=
5050 fi
5051 AC_SUBST(CYGWIN_OBJ)
5052 AC_SUBST(PRE_ALLOC_OBJ)
5053 AC_SUBST(POST_ALLOC_OBJ)
5054
5055 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5056 dnl verbatim defined above.  The tricky name is apropos, as this hack
5057 dnl makes Fortify go sour!
5058 AH_VERBATIM([FORTIFY_SOUR],
5059 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5060    The workaround disables some useful run-time checking, so it
5061    should be conditional to the platforms with the performance bug.
5062    Perhaps Apple will fix this some day; also see m4/extern-inline.m4.  */
5063 #if defined __APPLE__ && defined __GNUC__
5064 # ifndef _DONT_USE_CTYPE_INLINE_
5065 #  define _DONT_USE_CTYPE_INLINE_
5066 # endif
5067 # ifndef _FORTIFY_SOURCE
5068 #  define _FORTIFY_SOURCE 0
5069 # endif
5070 #endif
5071 ])
5072
5073 # If user asks to omit features, disable optional features that gnulib
5074 # might otherwise enable.
5075 if test "$with_features" = no && test "$enable_acl" != yes; then
5076   enable_acl=no
5077 fi
5078
5079 # Configure gnulib.  Although this does not affect CFLAGS or LIBS permanently.
5080 # it temporarily reverts them to their pre-pkg-config values,
5081 # because gnulib needs to work with both src (which uses the
5082 # pkg-config stuff) and lib-src (which does not).  For example, gnulib
5083 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5084 # and it therefore needs to run in an environment where LIBS does not
5085 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5086 # for some package unrelated to lib-src.
5087 SAVE_CFLAGS=$CFLAGS
5088 SAVE_LIBS=$LIBS
5089 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5090 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5091 gl_ASSERT_NO_GNULIB_POSIXCHECK
5092 gl_ASSERT_NO_GNULIB_TESTS
5093 gl_INIT
5094 CFLAGS=$SAVE_CFLAGS
5095 LIBS=$SAVE_LIBS
5096
5097 if test "${opsys}" = "mingw32"; then
5098   CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5099   # Remove unneeded switches from the value of CC that goes to Makefiles
5100   CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5101 fi
5102
5103 case "$opsys" in
5104   aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5105
5106   cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5107
5108   darwin)
5109    ## The -headerpad option tells ld (see man page) to leave room at the
5110    ## end of the header for adding load commands.  Needed for dumping.
5111    ## 0x1000 is enough for roughly 52 load commands on the x86_64
5112    ## architecture (where they are 78 bytes each). The actual number of
5113    ## load commands added is not consistent but normally ranges from
5114    ## about 14 to about 34. Setting it high gets us plenty of slop and
5115    ## only costs about 1.5K of wasted binary space.
5116    headerpad_extra=1000
5117    if test "$HAVE_NS" = "yes"; then
5118      libs_nsgui="-framework AppKit"
5119      if test "$NS_IMPL_COCOA" = "yes"; then
5120         libs_nsgui="$libs_nsgui -framework IOKit"
5121      fi
5122    else
5123      libs_nsgui=
5124    fi
5125    LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5126
5127    ## This is here because src/Makefile.in did some extra fiddling around
5128    ## with LD_SWITCH_SYSTEM.  It seems cleaner to put this in
5129    ## LD_SWITCH_SYSTEM_TEMACS instead,
5130    test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5131      LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5132    ;;
5133
5134   ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5135   ## find X at run-time.
5136   ## When handled by cpp, this was in LD_SWITCH_SYSTEM.  However, at the
5137   ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5138   ## had not yet been defined and was expanded to null.  Hence LD_SWITCH_SYSTEM
5139   ## had different values in configure (in ac_link) and src/Makefile.in.
5140   ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5141   gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5142
5143   mingw32)
5144    ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5145    case "$canonical" in
5146      x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5147      *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5148    esac
5149    ;;
5150
5151   *) LD_SWITCH_SYSTEM_TEMACS= ;;
5152 esac
5153
5154 # -nopie fixes a temacs segfault on Gentoo, OpenBSD, and other systems
5155 # with "hardened" GCC configurations for some reason (Bug#18784).
5156 # We don't know why -nopie works, but not segfaulting is better than
5157 # segfaulting.  Use ac_c_werror_flag=yes when trying -nopie, otherwise
5158 # clang keeps warning that it does not understand -nopie, and pre-4.6
5159 # GCC has a similar problem (Bug#20338).
5160 AC_CACHE_CHECK([whether $CC accepts -nopie],
5161   [emacs_cv_prog_cc_nopie],
5162   [emacs_save_c_werror_flag=$ac_c_werror_flag
5163    emacs_save_LDFLAGS=$LDFLAGS
5164    ac_c_werror_flag=yes
5165    LDFLAGS="$LDFLAGS -nopie"
5166    AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
5167      [emacs_cv_prog_cc_nopie=yes],
5168      [emacs_cv_prog_cc_nopie=no])
5169    ac_c_werror_flag=$emacs_save_c_werror_flag
5170    LDFLAGS=$emacs_save_LDFLAGS])
5171 if test "$emacs_cv_prog_cc_nopie" = yes; then
5172   LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -nopie"
5173 fi
5174
5175 if test x$ac_enable_profiling != x ; then
5176   case $opsys in
5177     *freebsd | gnu-linux) ;;
5178     *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5179   esac
5180 fi
5181
5182 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5183
5184 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5185
5186 ## Common for all window systems
5187 if test "$window_system" != "none"; then
5188   AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5189   AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5190   WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5191 fi
5192
5193 AC_SUBST(WINDOW_SYSTEM_OBJ)
5194
5195 AH_TOP([/* GNU Emacs site configuration template file.
5196
5197 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2016
5198   Free Software Foundation, Inc.
5199
5200 This file is part of GNU Emacs.
5201
5202 GNU Emacs is free software: you can redistribute it and/or modify
5203 it under the terms of the GNU General Public License as published by
5204 the Free Software Foundation, either version 3 of the License, or
5205 (at your option) any later version.
5206
5207 GNU Emacs is distributed in the hope that it will be useful,
5208 but WITHOUT ANY WARRANTY; without even the implied warranty of
5209 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
5210 GNU General Public License for more details.
5211
5212 You should have received a copy of the GNU General Public License
5213 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
5214
5215
5216 /* No code in Emacs #includes config.h twice, but some bits of code
5217    intended to work with other packages as well (like gmalloc.c)
5218    think they can include it as many times as they like.  */
5219 #ifndef EMACS_CONFIG_H
5220 #define EMACS_CONFIG_H
5221 ])dnl
5222
5223 AH_BOTTOM([#include <conf_post.h>
5224
5225 #endif /* EMACS_CONFIG_H */
5226
5227 /*
5228 Local Variables:
5229 mode: c
5230 End:
5231 */
5232 ])dnl
5233
5234 #### Report on what we decided to do.
5235 #### Report GTK as a toolkit, even if it doesn't use Xt.
5236 #### It makes printing result more understandable as using GTK sets
5237 #### toolkit_scroll_bars to yes by default.
5238 if test "${HAVE_GTK}" = "yes"; then
5239   USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5240 fi
5241
5242 if test $USE_ACL -ne 0; then
5243   ACL_SUMMARY="yes $LIB_ACL"
5244 else
5245   ACL_SUMMARY=no
5246 fi
5247
5248 emacs_standard_dirs='Standard dirs'
5249 AS_ECHO(["
5250 Configured for '${canonical}'.
5251
5252   Where should the build process find the source code?    ${srcdir}
5253   What compiler should emacs be built with?               ${CC} ${CFLAGS}
5254   Should Emacs use the GNU version of malloc?             ${GNU_MALLOC}${GNU_MALLOC_reason}
5255   Should Emacs use a relocating allocator for buffers?    ${REL_ALLOC}
5256   Should Emacs use mmap(2) for buffer allocation?         $use_mmap_for_buffers
5257   What window system should Emacs use?                    ${window_system}
5258   What toolkit should Emacs use?                          ${USE_X_TOOLKIT}
5259   Where do we find X Windows header files?                ${x_includes:-$emacs_standard_dirs}
5260   Where do we find X Windows libraries?                   ${x_libraries:-$emacs_standard_dirs}"])
5261
5262 optsep=
5263 emacs_config_features=
5264 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5265   GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5266   LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT X11 NS MODULES \
5267   XWIDGETS; do
5268
5269     case $opt in
5270       NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5271       TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5272       *) eval val=\${HAVE_$opt} ;;
5273     esac
5274     case x$val in
5275       xno|xnone|x) continue ;;
5276     esac
5277     case $opt in
5278       X_TOOLKIT)
5279         case $val in
5280           GTK*|LUCID|MOTIF) opt=$val ;;
5281           *) continue ;;
5282         esac
5283       ;;
5284     esac
5285     AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5286     optsep=' '
5287 done
5288 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5289   [Summary of some of the main features enabled by configure.])
5290
5291 AS_ECHO(["  Does Emacs use -lXaw3d?                                 ${HAVE_XAW3D}
5292   Does Emacs use -lXpm?                                   ${HAVE_XPM}
5293   Does Emacs use -ljpeg?                                  ${HAVE_JPEG}
5294   Does Emacs use -ltiff?                                  ${HAVE_TIFF}
5295   Does Emacs use a gif library?                           ${HAVE_GIF} $LIBGIF
5296   Does Emacs use a png library?                           ${HAVE_PNG} $LIBPNG
5297   Does Emacs use -lrsvg-2?                                ${HAVE_RSVG}
5298   Does Emacs use cairo?                                   ${HAVE_CAIRO}
5299   Does Emacs use imagemagick?                             ${HAVE_IMAGEMAGICK}
5300   Does Emacs support sound?                               ${HAVE_SOUND}
5301   Does Emacs use -lgpm?                                   ${HAVE_GPM}
5302   Does Emacs use -ldbus?                                  ${HAVE_DBUS}
5303   Does Emacs use -lgconf?                                 ${HAVE_GCONF}
5304   Does Emacs use GSettings?                               ${HAVE_GSETTINGS}
5305   Does Emacs use a file notification library?             ${NOTIFY_SUMMARY}
5306   Does Emacs use access control lists?                    ${ACL_SUMMARY}
5307   Does Emacs use -lselinux?                               ${HAVE_LIBSELINUX}
5308   Does Emacs use -lgnutls?                                ${HAVE_GNUTLS}
5309   Does Emacs use -lxml2?                                  ${HAVE_LIBXML2}
5310   Does Emacs use -lfreetype?                              ${HAVE_FREETYPE}
5311   Does Emacs use -lm17n-flt?                              ${HAVE_M17N_FLT}
5312   Does Emacs use -lotf?                                   ${HAVE_LIBOTF}
5313   Does Emacs use -lxft?                                   ${HAVE_XFT}
5314   Does Emacs directly use zlib?                           ${HAVE_ZLIB}
5315   Does Emacs have dynamic modules support?                ${HAVE_MODULES}
5316   Does Emacs use toolkit scroll bars?                     ${USE_TOOLKIT_SCROLL_BARS}
5317   Does Emacs support Xwidgets (requires gtk3)?            ${HAVE_XWIDGETS}
5318 "])
5319
5320 if test -n "${EMACSDATA}"; then
5321    AS_ECHO(["  Environment variable EMACSDATA set to:                  $EMACSDATA"])
5322 fi
5323 if test -n "${EMACSDOC}"; then
5324    AS_ECHO(["  Environment variable EMACSDOC set to:                   $EMACSDOC"])
5325 fi
5326
5327 echo
5328
5329 if test "$HAVE_NS" = "yes"; then
5330    echo
5331    AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5332 The installed application will go to nextstep/Emacs.app and can be
5333 run or moved from there."])
5334    if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5335       echo "The application will be fully self-contained."
5336     else
5337       AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5338 You may need to run \"${MAKE-make} install\" with sudo.  The application will fail
5339 to run if these resources are not installed."])
5340    fi
5341    echo
5342 fi
5343
5344 if test "${opsys}" = "cygwin"; then
5345   case `uname -r` in
5346     1.5.*) AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5347            echo
5348            ;;
5349   esac
5350 fi
5351
5352 # Remove any trailing slashes in these variables.
5353 case $prefix in
5354   */) prefix=`AS_DIRNAME(["$prefix."])`;;
5355 esac
5356 case $exec_prefix in
5357   */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5358 esac
5359
5360 if test "$HAVE_NS" = "yes"; then
5361   if test "$NS_IMPL_GNUSTEP" = yes; then
5362     AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5363       nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5364     ns_check_file=Resources/Info-gnustep.plist
5365   else
5366     AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5367       nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5368     ns_check_file=Contents/Info.plist
5369   fi
5370   AC_SUBST(ns_check_file)
5371 fi
5372
5373 dnl config.status treats $srcdir specially, so I think this is ok...
5374 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5375
5376 dnl Obviously there is duplication here wrt $SUBDIR_MAKEFILES.
5377 dnl You _can_ use that variable in AC_CONFIG_FILES, so long as any directory
5378 dnl using automake (ie lib/) is explicitly listed and not "hidden" in a variable
5379 dnl (else you get "no 'Makefile.am' found for any configure output").
5380 dnl This will work, but you get a config.status that is not quite right
5381 dnl (see http://lists.gnu.org/archive/html/bug-autoconf/2008-08/msg00028.html).
5382 dnl That doesn't have any obvious consequences for Emacs, but on the whole
5383 dnl it seems better to just live with the duplication.
5384 SUBDIR_MAKEFILES="lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile nt/Makefile"
5385
5386 AC_CONFIG_FILES([Makefile lib/Makefile lib-src/Makefile oldXMenu/Makefile \
5387        doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile \
5388        doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile \
5389        leim/Makefile nextstep/Makefile nt/Makefile])
5390
5391 dnl test/ is not present in release tarfiles.
5392 opt_makefile=test/automated/Makefile
5393
5394 if test -f "$srcdir/$opt_makefile.in"; then
5395   SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5396   dnl Again, it's best not to use a variable.  Though you can add
5397   dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5398   AC_CONFIG_FILES([test/automated/Makefile])
5399 fi
5400
5401
5402 dnl The admin/ directory used to be excluded from tarfiles.
5403 if test -d $srcdir/admin; then
5404   SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5405   AC_CONFIG_FILES([admin/charsets/Makefile])
5406   AC_CONFIG_FILES([admin/unidata/Makefile])
5407   AC_CONFIG_FILES([admin/grammars/Makefile])
5408 fi                              dnl -d admin
5409
5410
5411 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5412
5413 AC_SUBST(SUBDIR_MAKEFILES_IN)
5414
5415 dnl You might wonder (I did) why epaths.h is generated by running make,
5416 dnl rather than just letting configure generate it from epaths.in.
5417 dnl One reason is that the various paths are not fully expanded (see above);
5418 dnl eg gamedir=${prefix}/var/games/emacs.
5419 dnl Secondly, the GNU Coding standards require that one should be able
5420 dnl to run 'make prefix=/some/where/else' and override the values set
5421 dnl by configure.  This also explains the 'move-if-change' test and
5422 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5423 AC_CONFIG_COMMANDS([src/epaths.h], [
5424 if test "${opsys}" = "mingw32"; then
5425   ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5426 else
5427   ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5428 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5429 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5430
5431 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5432 dnl is not yet set, sigh.  Or we could use ../$srcdir/src/.gdbinit,
5433 dnl or a symlink?
5434 AC_CONFIG_COMMANDS([src/.gdbinit], [
5435 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5436   AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5437 fi
5438 ])
5439
5440 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5441 dnl See comments for etc-refcards-emacsver.tex.
5442 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5443 dnl it is not quite the same.  But we are generating in $srcdir.
5444 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5445 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5446 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5447 ])
5448
5449 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5450 dnl then a directory etc/refcards is created in the build directory,
5451 dnl which is probably harmless, but confusing (in out-of-tree builds).
5452 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5453 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5454 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5455 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5456 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5457 ])
5458
5459 AC_OUTPUT
5460
5461 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])