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, 25.0.50, 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 ${1+"$@"} 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])
 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, gfile, inotify, w32, no)])],
 360  [ case "${withval}" in
 361     y | ye | yes )      val=yes ;;
 362     n | no )            val=no  ;;
 363     g | gf | gfi | gfil | gfile )       val=gfile ;;
 364     i | in | ino | inot | inoti | inotif | inotify )    val=inotify ;;
 365     w | w3 | w32 )      val=w32 ;;
 366     * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
 367 this option's value should be 'yes', 'no', 'gfile', 'inotify' or 'w32'.
 368 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
 369 otherwise for the first of 'inotify' or 'gfile' that is usable.])
 370     ;;
 371    esac
 372    with_file_notification=$val
 373  ],
 374  [with_file_notification=$with_features])
 375
 376 OPTION_DEFAULT_OFF([xwidgets],
 377   [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
 378
 379 ## For the times when you want to build Emacs but don't have
 380 ## a suitable makeinfo, and can live without the manuals.
 381 dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
 382 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
 383
 384 ## This might be a 'configure' arg.
 385 AC_SUBST([ACLOCAL_PATH])
 386
 387 ## Makefile.in needs the cache file name.
 388 AC_SUBST(cache_file)
 389
 390 ## This is an option because I do not know if all info/man support
 391 ## compressed files, nor how to test if they do so.
 392 OPTION_DEFAULT_ON([compress-install],
 393   [don't compress some files (.el, .info, etc.) when installing.  Equivalent to:
 394 make GZIP_PROG= install])
 395
 396 AC_ARG_WITH(gameuser,dnl
 397 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
 398                 [user for shared game score files.
 399                 An argument prefixed by ':' specifies a group instead.])])
 400 gameuser=
 401 gamegroup=
 402 # We don't test if we can actually chown/chgrp here, because configure
 403 # may run without root privileges.  lib-src/Makefile.in will handle
 404 # any errors due to missing user/group gracefully.
 405 case ${with_gameuser} in
 406   no) ;;
 407   "" | yes) gamegroup=games ;;
 408   :*) gamegroup=${with_gameuser#:} ;;
 409   *) gameuser=${with_gameuser} ;;
 410 esac
 411
 412 AC_ARG_WITH([gnustep-conf],dnl
 413 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
 414    [name of GNUstep configuration file to use on systems where the command
 415     'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
 416     /etc/GNUstep/GNUstep.conf])])
 417 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
 418   GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
 419 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
 420      GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
 421
 422 AC_ARG_ENABLE(ns-self-contained,
 423 [AS_HELP_STRING([--disable-ns-self-contained],
 424                 [disable self contained build under NeXTstep])],
 425    EN_NS_SELF_CONTAINED=$enableval,
 426    EN_NS_SELF_CONTAINED=yes)
 427
 428 locallisppathset=no
 429 AC_ARG_ENABLE(locallisppath,
 430 [AS_HELP_STRING([--enable-locallisppath=PATH],
 431                 [directories Emacs should search for lisp files specific
 432                  to this site])],
 433 if test "${enableval}" = "no"; then
 434   locallisppath=
 435 elif test "${enableval}" != "yes"; then
 436   locallisppath=${enableval} locallisppathset=yes
 437 fi)
 438
 439 AC_ARG_ENABLE(checking,
 440 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
 441                 [enable expensive run-time checks.  With LIST,
 442                  enable only specific categories of checks.
 443                  Categories are: all,yes,no.
 444                  Flags are: stringbytes, stringoverrun, stringfreelist,
 445                  xmallocoverrun, conslist, glyphs])],
 446 [ac_checking_flags="${enableval}"],[])
 447 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 448 for check in $ac_checking_flags
 449 do
 450         case $check in
 451         # these set all the flags to specific states
 452         yes)            ac_enable_checking=1 ;;
 453         no)             ac_enable_checking= ;
 454                         ac_gc_check_stringbytes= ;
 455                         ac_gc_check_string_overrun= ;
 456                         ac_gc_check_string_free_list= ;
 457                         ac_xmalloc_overrun= ;
 458                         ac_gc_check_cons_list= ;
 459                         ac_glyphs_debug= ;;
 460         all)            ac_enable_checking=1 ;
 461                         ac_gc_check_stringbytes=1 ;
 462                         ac_gc_check_string_overrun=1 ;
 463                         ac_gc_check_string_free_list=1 ;
 464                         ac_xmalloc_overrun=1 ;
 465                         ac_gc_check_cons_list=1 ;
 466                         ac_glyphs_debug=1 ;;
 467         # these enable particular checks
 468         stringbytes)    ac_gc_check_stringbytes=1 ;;
 469         stringoverrun)  ac_gc_check_string_overrun=1 ;;
 470         stringfreelist) ac_gc_check_string_free_list=1 ;;
 471         xmallocoverrun) ac_xmalloc_overrun=1 ;;
 472         conslist)       ac_gc_check_cons_list=1 ;;
 473         glyphs)         ac_glyphs_debug=1 ;;
 474         *)      AC_MSG_ERROR(unknown check category $check) ;;
 475         esac
 476 done
 477 IFS="$ac_save_IFS"
 478
 479 if test x$ac_enable_checking != x ; then
 480   AC_DEFINE(ENABLE_CHECKING, 1,
 481 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
 482 fi
 483 if test x$ac_gc_check_stringbytes != x ; then
 484   AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
 485 [Define this temporarily to hunt a bug.  If defined, the size of
 486    strings is redundantly recorded in sdata structures so that it can
 487    be compared to the sizes recorded in Lisp strings.])
 488 fi
 489 if test x$ac_gc_check_string_overrun != x ; then
 490   AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
 491 [Define this to check for short string overrun.])
 492 fi
 493 if test x$ac_gc_check_string_free_list != x ; then
 494   AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
 495 [Define this to check the string free list.])
 496 fi
 497 if test x$ac_xmalloc_overrun != x ; then
 498   AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
 499 [Define this to check for malloc buffer overrun.])
 500 fi
 501 if test x$ac_gc_check_cons_list != x ; then
 502   AC_DEFINE(GC_CHECK_CONS_LIST, 1,
 503 [Define this to check for errors in cons list.])
 504 fi
 505 if test x$ac_glyphs_debug != x ; then
 506   AC_DEFINE(GLYPH_DEBUG, 1,
 507 [Define this to enable glyphs debugging code.])
 508 fi
 509
 510 AC_ARG_ENABLE(check-lisp-object-type,
 511 [AS_HELP_STRING([--enable-check-lisp-object-type],
 512                 [enable compile time checks for the Lisp_Object data type.
 513                 This is useful for development for catching certain types of bugs.])],
 514 if test "${enableval}" != "no"; then
 515    AC_DEFINE(CHECK_LISP_OBJECT_TYPE, 1,
 516    [Define this to enable compile time checks for the Lisp_Object data type.])
 517 fi)
 518
 519
 520 dnl The name of this option is unfortunate.  It predates, and has no
 521 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
 522 dnl Actually, it stops it working.
 523 dnl http://lists.gnu.org/archive/html/emacs-devel/2012-11/msg00393.html
 524 AC_ARG_ENABLE(profiling,
 525 [AS_HELP_STRING([--enable-profiling],
 526                 [build emacs with low-level, gprof profiling support.
 527                 Mainly useful for debugging Emacs itself.  May not work on
 528                 all platforms.  Stops profiler.el working.])],
 529 [ac_enable_profiling="${enableval}"],[])
 530 if test x$ac_enable_profiling != x ; then
 531    PROFILING_CFLAGS="-DPROFILING=1 -pg"
 532 else
 533    PROFILING_CFLAGS=
 534 fi
 535 AC_SUBST(PROFILING_CFLAGS)
 536
 537 AC_ARG_ENABLE(autodepend,
 538 [AS_HELP_STRING([--enable-autodepend],
 539                 [automatically generate dependencies to .h-files.
 540                  Requires gcc, enabled if found.])],
 541 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
 542
 543 AC_ARG_ENABLE(gtk-deprecation-warnings,
 544 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
 545                 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
 546 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
 547
 548 dnl This used to use changequote, but, apart from 'changequote is evil'
 549 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
 550 dnl the great gob of text.  Thus it's not processed for possible expansion.
 551 dnl Just make sure the brackets remain balanced.
 552 dnl
 553 dnl Since Emacs can't find matching pairs of quotes, boundaries are
 554 dnl indicated by comments.
 555 dnl quotation begins
 556 [
 557
 558 ### If you add support for a new configuration, add code to this
 559 ### switch statement to recognize your configuration name and select
 560 ### the appropriate opsys.
 561
 562 ### As far as handling version numbers on operating systems is
 563 ### concerned, make sure things will fail in a fixable way.  If
 564 ### /etc/MACHINES doesn't say anything about version numbers, be
 565 ### prepared to handle anything reasonably.  If version numbers
 566 ### matter, be sure /etc/MACHINES says something about it.
 567
 568 opsys='' unported=no
 569 case "${canonical}" in
 570
 571   ## GNU/Linux and similar ports
 572   *-*-linux* )
 573     opsys=gnu-linux
 574   ;;
 575
 576   ## FreeBSD ports
 577   *-*-freebsd* )
 578     opsys=freebsd
 579   ;;
 580
 581   ## DragonFly ports
 582   *-*-dragonfly* )
 583     opsys=dragonfly
 584   ;;
 585
 586   ## FreeBSD kernel + glibc based userland
 587   *-*-kfreebsd*gnu* )
 588     opsys=gnu-kfreebsd
 589   ;;
 590
 591   ## NetBSD ports
 592   *-*-netbsd* )
 593     opsys=netbsd
 594   ;;
 595
 596   ## OpenBSD ports
 597   *-*-openbsd* | *-*-mirbsd* )
 598     opsys=openbsd
 599   ;;
 600
 601   ## Apple Darwin / Mac OS X
 602   *-apple-darwin* )
 603     case "${canonical}" in
 604       *-apple-darwin[0-9].*) unported=yes ;;
 605       i[3456]86-* | x86_64-* )  ;;
 606       * )            unported=yes ;;
 607     esac
 608     opsys=darwin
 609     ## Use fink packages if available.
 610     ## FIXME find a better way to do this: http://debbugs.gnu.org/11507
 611 ##    if test -d /sw/include && test -d /sw/lib; then
 612 ##      GCC_TEST_OPTIONS="-I/sw/include -L/sw/lib"
 613 ##      NON_GCC_TEST_OPTIONS=${GCC_TEST_OPTIONS}
 614 ##    fi
 615   ;;
 616
 617   ## Chromium Native Client
 618   *-nacl )
 619     opsys=nacl
 620   ;;
 621
 622   ## Cygwin ports
 623   *-*-cygwin )
 624     opsys=cygwin
 625   ;;
 626
 627   ## HP 9000 series 700 and 800, running HP/UX
 628   hppa*-hp-hpux10.2* )
 629     opsys=hpux10-20
 630   ;;
 631   hppa*-hp-hpux1[1-9]* )
 632     opsys=hpux11
 633     CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
 634   ;;
 635
 636   ## IBM machines
 637   rs6000-ibm-aix4.[23]* )
 638     opsys=aix4-2
 639   ;;
 640   powerpc-ibm-aix4.[23]*  )
 641     opsys=aix4-2
 642   ;;
 643   rs6000-ibm-aix[56]* )
 644     opsys=aix4-2
 645   ;;
 646   powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
 647     opsys=aix4-2
 648   ;;
 649
 650   ## Silicon Graphics machines
 651   ## Iris 4D
 652   mips-sgi-irix6.5 )
 653     opsys=irix6-5
 654     # Without defining _LANGUAGE_C, things get masked out in the headers
 655     # so that, for instance, grepping for 'free' in stdlib.h fails and
 656     # AC_HEADER_STD_C fails.   (MIPSPro 7.2.1.2m compilers, Irix 6.5.3m).
 657     NON_GCC_TEST_OPTIONS="-D_LANGUAGE_C"
 658   ;;
 659
 660   ## Suns
 661   *-sun-solaris* \
 662     | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
 663     | x86_64-*-solaris2*    | x86_64-*-sunos5*)
 664     case "${canonical}" in
 665       i[3456]86-*-* )   ;;
 666       amd64-*-*|x86_64-*-*) ;;
 667       sparc* )          ;;
 668       * )               unported=yes ;;
 669     esac
 670     case "${canonical}" in
 671       *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
 672                 opsys=sol2-10
 673                 emacs_check_sunpro_c=yes
 674                 ;;
 675       *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
 676       ## Note that Emacs 23.1's NEWS said the following would be dropped.
 677       *-sunos5.6* | *-solaris2.6* )
 678                 opsys=sol2-6
 679                 RANLIB="ar -ts"
 680                 ;;
 681       ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
 682       *-sunos5.[7-9]* | *-solaris2.[7-9]* )
 683                 opsys=sol2-6
 684                 emacs_check_sunpro_c=yes
 685                 ;;
 686     esac
 687     ## Watch out for a compiler that we know will not work.
 688     case "${canonical}" in
 689      *-solaris* | *-sunos5* )
 690                 if [ "x$CC" = x/usr/ucb/cc ]; then
 691                   ## /usr/ucb/cc doesn't work;
 692                   ## we should find some other compiler that does work.
 693                   unset CC
 694                 fi
 695                 ;;
 696       *) ;;
 697     esac
 698   ;;
 699
 700   ## Intel 386 machines where we don't care about the manufacturer.
 701   i[3456]86-*-* )
 702     case "${canonical}" in
 703       *-darwin* )               opsys=darwin ;;
 704       *-mingw* )
 705                 opsys=mingw32
 706                 # MinGW overrides and adds some system headers in nt/inc.
 707                 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
 708                 ;;
 709       *-sysv4.2uw* )            opsys=unixware ;;
 710       *-sysv5uw* )              opsys=unixware ;;
 711       *-sysv5OpenUNIX* )        opsys=unixware ;;
 712       ## Otherwise, we'll fall through to the generic opsys code at the bottom.
 713     esac
 714   ;;
 715
 716   # MinGW64
 717   x86_64-*-* )
 718     case "${canonical}" in
 719       *-mingw* )
 720                 opsys=mingw32
 721                 # MinGW overrides and adds some system headers in nt/inc.
 722                 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
 723                 ;;
 724       ## Otherwise, we'll fall through to the generic opsys code at the bottom.
 725     esac
 726   ;;
 727
 728   * )
 729     unported=yes
 730   ;;
 731 esac
 732
 733 ### If the code above didn't choose an operating system, just choose
 734 ### an operating system based on the configuration name.  You really
 735 ### only want to use this when you have no idea what the right
 736 ### operating system is; if you know what operating systems a machine
 737 ### runs, it's cleaner to make it explicit in the case statement
 738 ### above.
 739 if test x"${opsys}" = x; then
 740   case "${canonical}" in
 741     *-gnu* )                            opsys=gnu ;;
 742     * )
 743       unported=yes
 744     ;;
 745   esac
 746 fi
 747
 748 ]
 749 dnl quotation ends
 750
 751 if test $unported = yes; then
 752   AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
 753 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
 754 Check 'etc/MACHINES' for recognized configuration names.])
 755 fi
 756
 757 #### Choose a compiler.
 758
 759 dnl Don't bother to test for C89.
 760 AC_DEFUN([_AC_PROG_CC_C89], [$2])
 761
 762 dnl Sets GCC=yes if using gcc.
 763 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
 764 if test -n "$XCRUN"; then
 765   AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
 766   test -n "$AR" && export AR
 767 fi
 768
 769 dnl Emacs needs C99 or later.
 770 gl_PROG_CC_C99
 771
 772 AM_PROG_CC_C_O
 773
 774 if test x$GCC = xyes; then
 775   test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
 776 else
 777   test "x$NON_GCC_TEST_OPTIONS" != x && CC="$CC $NON_GCC_TEST_OPTIONS"
 778 fi
 779
 780 dnl This is used in lib/Makefile.am to use nt/gnulib.mk, the
 781 dnl alternative to lib/gnulib.mk, so as to avoid generating header files
 782 dnl that clash with MinGW.
 783 AM_CONDITIONAL([BUILDING_FOR_WINDOWSNT], [test "x$opsys" = "xmingw32"])
 784
 785 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
 786 AC_DEFUN([gl_CRYPTO_CHECK])
 787 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
 788 # as we don't use them.
 789 AC_DEFUN([gl_FCNTL_O_FLAGS])
 790 # Avoid gnulib's test for pthread_sigmask.
 791 funcs=
 792 for func in $ac_func_list; do
 793   test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
 794 done
 795 ac_func_list=$funcs
 796 # Use the system putenv even if it lacks GNU features, as we don't need them,
 797 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
 798 AC_CHECK_FUNCS_ONCE([putenv])
 799 AC_DEFUN([gl_FUNC_PUTENV],
 800   [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
 801
 802 # Initialize gnulib right after choosing the compiler.
 803 dnl Amongst other things, this sets AR and ARFLAGS.
 804 gl_EARLY
 805
 806 if test "$ac_test_CFLAGS" != set; then
 807   # It's helpful to have C macros available to GDB, so prefer -g3 to -g
 808   # if -g3 works and the user does not specify CFLAGS.
 809   # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
 810   case $CFLAGS in
 811     '-g')
 812       emacs_g3_CFLAGS='-g3';;
 813     '-g -O2')
 814       emacs_g3_CFLAGS='-g3 -O2';;
 815     *)
 816       emacs_g3_CFLAGS='';;
 817   esac
 818   if test -n "$emacs_g3_CFLAGS"; then
 819     emacs_save_CFLAGS=$CFLAGS
 820     CFLAGS=$emacs_g3_CFLAGS
 821     AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
 822       [emacs_cv_prog_cc_g3],
 823       [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
 824          [emacs_cv_prog_cc_g3=yes],
 825          [emacs_cv_prog_cc_g3=no])])
 826     if test $emacs_cv_prog_cc_g3 != yes; then
 827       CFLAGS=$emacs_save_CFLAGS
 828     fi
 829     if test $opsys = mingw32; then
 830       CFLAGS="$CFLAGS -gdwarf-2"
 831     fi
 832   fi
 833
 834   case $CFLAGS in
 835     *-O*) ;;
 836     *)
 837       # No optimization flag was inferred for this non-GCC compiler.
 838       # Try -O.  This is needed for xlc on AIX; see Bug#14258.
 839       emacs_save_CFLAGS=$CFLAGS
 840       test -z "$CFLAGS" || CFLAGS="$CFLAGS "
 841       CFLAGS=${CFLAGS}-O
 842       AC_CACHE_CHECK([whether $CC accepts -O],
 843         [emacs_cv_prog_cc_o],
 844         [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
 845            [emacs_cv_prog_cc_o=yes],
 846            [emacs_cv_prog_cc_o=no])])
 847       if test $emacs_cv_prog_cc_o != yes; then
 848         CFLAGS=$emacs_save_CFLAGS
 849       fi ;;
 850   esac
 851 fi
 852
 853 AC_ARG_ENABLE([gcc-warnings],
 854   [AS_HELP_STRING([--enable-gcc-warnings],
 855                   [turn on lots of GCC warnings/errors. This is intended for
 856                    developers, and may generate false alarms when used
 857                    with older or non-GNU development tools.])],
 858   [case $enableval in
 859      yes|no) ;;
 860      *)      AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
 861    esac
 862    gl_gcc_warnings=$enableval],
 863   [gl_gcc_warnings=no]
 864 )
 865
 866 # clang is unduly picky about some things.
 867 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
 868   [AC_COMPILE_IFELSE(
 869      [AC_LANG_PROGRAM([[
 870           #ifndef __clang__
 871             error "not clang";
 872           #endif
 873         ]])],
 874      [emacs_cv_clang=yes],
 875      [emacs_cv_clang=no])])
 876
 877 # When compiling with GCC, prefer -isystem to -I when including system
 878 # include files, to avoid generating useless diagnostics for the files.
 879 if test "$gl_gcc_warnings" != yes; then
 880   isystem='-I'
 881   if test "$emacs_cv_clang" = yes
 882   then
 883      # Turn off some warnings if supported.
 884      gl_WARN_ADD([-Wno-switch])
 885      gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
 886      gl_WARN_ADD([-Wno-pointer-sign])
 887      gl_WARN_ADD([-Wno-string-plus-int])
 888      gl_WARN_ADD([-Wno-unknown-attributes])
 889   fi
 890 else
 891   isystem='-isystem '
 892
 893   # This, $nw, is the list of warnings we disable.
 894   nw=
 895
 896   case $with_x_toolkit in
 897     lucid | athena | motif)
 898        # Old toolkits mishandle 'const'.
 899        nw="$nw -Wwrite-strings"
 900        ;;
 901     *)
 902        gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
 903        ;;
 904   esac
 905   AC_SUBST([WERROR_CFLAGS])
 906
 907   nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
 908   nw="$nw -Woverlength-strings"     # Not a problem these days
 909   nw="$nw -Wformat-nonliteral"      # we do this a lot
 910   nw="$nw -Wvla"                    # Emacs uses <vla.h>.
 911   nw="$nw -Wswitch-default"         # Too many warnings for now
 912   nw="$nw -Winline"                 # OK to ignore 'inline'
 913   nw="$nw -Wjump-misses-init"       # We sometimes safely jump over init.
 914   nw="$nw -Wstrict-overflow"        # OK to optimize assuming that
 915                                     # signed overflow has undefined behavior
 916   nw="$nw -Wsync-nand"              # irrelevant here, and provokes ObjC warning
 917   nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
 918   nw="$nw -Wbad-function-cast"      # These casts are no worse than others.
 919
 920   # Emacs doesn't care about shadowing; see
 921   # <http://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
 922   nw="$nw -Wshadow"
 923
 924   # Emacs's use of alloca inhibits protecting the stack.
 925   nw="$nw -Wstack-protector"
 926
 927   # Emacs's use of partly-const functions such as Fgnutls_available_p
 928   # make this option problematic.
 929   nw="$nw -Wsuggest-attribute=const"
 930
 931   # Emacs's use of partly-pure functions such as CHECK_TYPE make this
 932   # option problematic.
 933   nw="$nw -Wsuggest-attribute=pure"
 934
 935   # This part is merely for shortening the command line,
 936   # since -Wall implies -Wswitch.
 937   nw="$nw -Wswitch"
 938
 939   # This part is merely for shortening the command line,
 940   # since -Wno-FOO needs to be added below regardless.
 941   nw="$nw -Wmissing-field-initializers"
 942   nw="$nw -Wtype-limits"
 943   nw="$nw -Wunused-parameter"
 944
 945   if test $emacs_cv_clang = yes; then
 946     nw="$nw -Wcast-align"
 947   fi
 948
 949   gl_MANYWARN_ALL_GCC([ws])
 950   gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
 951   for w in $ws; do
 952     gl_WARN_ADD([$w])
 953   done
 954   gl_WARN_ADD([-Wredundant-decls])     # Prefer this, as we don't use Bison.
 955   gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
 956   gl_WARN_ADD([-Wno-sign-compare])     # Too many warnings for now
 957   gl_WARN_ADD([-Wno-type-limits])      # Too many warnings for now
 958   gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
 959   gl_WARN_ADD([-Wno-format-nonliteral])
 960
 961   # More things that clang is unduly picky about.
 962   if test $emacs_cv_clang = yes; then
 963     gl_WARN_ADD([-Wno-format-extra-args])
 964     gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
 965     gl_WARN_ADD([-Wno-unused-command-line-argument])
 966     gl_WARN_ADD([-Wno-unused-value])
 967   fi
 968
 969   AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
 970   AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
 971   AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
 972   [/* Enable compile-time and run-time bounds-checking, and some warnings,
 973       without upsetting glibc 2.15+. */
 974    #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
 975         && defined __OPTIMIZE__ && __OPTIMIZE__)
 976    # define _FORTIFY_SOURCE 2
 977    #endif
 978   ])
 979
 980   # We use a slightly smaller set of warning options for lib/.
 981   # Remove the following and save the result in GNULIB_WARN_CFLAGS.
 982   nw=
 983   nw="$nw -Wunused-macros"
 984
 985   gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
 986   AC_SUBST([GNULIB_WARN_CFLAGS])
 987 fi
 988
 989 edit_cflags="
 990   s,///*,/,g
 991   s/^/ /
 992   s/ -I/ $isystem/g
 993   s/^ //
 994 "
 995
 996 AC_ARG_ENABLE(link-time-optimization,
 997 [AS_HELP_STRING([--enable-link-time-optimization],
 998                 [build emacs with link-time optimization.
 999                  This requires GCC 4.5.0 or later, or clang.
1000                  (Note that clang support is experimental - see INSTALL.)
1001                  It also makes Emacs harder to debug, and when we tried it
1002                  with GCC 4.9.0 x86-64 it made Emacs slower, so it's not
1003                  recommended for typical use.])],
1004 if test "${enableval}" != "no"; then
1005    ac_lto_supported=no
1006    if test $emacs_cv_clang = yes; then
1007       AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1008       GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1009       if test -x "$GOLD_PLUGIN"; then
1010          LTO="-flto"
1011       fi
1012    elif test x$GCC = xyes; then
1013       AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1014       CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1015       if test x$CPUS != x; then
1016          LTO="-flto=$CPUS"
1017       else
1018          LTO="-flto"
1019       fi
1020    else
1021       AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1022    fi
1023    if test -z "$LTO"; then
1024       ac_lto_supported=no
1025    else
1026       old_CFLAGS=$CFLAGS
1027       CFLAGS="$CFLAGS $LTO"
1028       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1029          [ac_lto_supported=yes], [ac_lto_supported=no])
1030          CFLAGS="$old_CFLAGS"
1031    fi
1032    AC_MSG_RESULT([$ac_lto_supported])
1033    if test "$ac_lto_supported" = "yes"; then
1034       CFLAGS="$CFLAGS $LTO"
1035       if test x$emacs_cv_clang = xyes; then
1036          AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1037          # WARNING: 'ar --plugin ...' doesn't work without
1038          # command, so plugin name is appended to ARFLAGS.
1039          ARFLAGS="cru --plugin $GOLD_PLUGIN"
1040          RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1041       else
1042         dnl The following is needed for GCC 4.9.0.  The GCC 4.9.0 release notes
1043         dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1044         dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1045         dnl dump core on Fedora 20, so play it safe for now.
1046         gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1047           [CFLAGS="$CFLAGS -ffat-lto-objects"])
1048       fi
1049    fi
1050 fi)
1051
1052 dnl Prefer silent make output.  For verbose output, use
1053 dnl 'configure --disable-silent-rules' or 'make V=1' .
1054 AM_SILENT_RULES([yes])
1055 dnl Port to Automake 1.11.
1056 dnl This section can be removed once we assume Automake 1.14 or later.
1057 : ${AM_V=$AM_DEFAULT_VERBOSITY}
1058 : ${AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY}
1059 AC_SUBST([AM_V])
1060 AM_SUBST_NOTMAKE([AM_V])
1061 AC_SUBST([AM_DEFAULT_V])
1062 AM_SUBST_NOTMAKE([AM_DEFAULT_V])
1063 AC_SUBST([AM_DEFAULT_VERBOSITY])
1064
1065 dnl Some other nice autoconf tests.
1066 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1067 dnl AC_PROG_INSTALL
1068 dnl AC_PROG_MKDIR_P
1069 dnl if test "x$RANLIB" = x; then
1070 dnl   AC_PROG_RANLIB
1071 dnl fi
1072
1073
1074 dnl Sadly, AC_PROG_LN_S is too restrictive.  It also tests whether links
1075 dnl can be made to directories.  This is not relevant for our usage, and
1076 dnl excludes some cases that work fine for us.  Eg MS Windows or files
1077 dnl hosted on AFS, both examples where simple links work, but links to
1078 dnl directories fail.  We use a cut-down version instead.
1079 dnl AC_PROG_LN_S
1080
1081 AC_MSG_CHECKING([whether ln -s works for files in the same directory])
1082 rm -f conf$$ conf$$.file
1083
1084 LN_S_FILEONLY='cp -p'
1085
1086 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1087 dnl random program in the current directory.
1088 if (echo >conf$$.file) 2>/dev/null; then
1089   if ln -s conf$$.file conf$$ 2>/dev/null; then
1090     if test "$opsys" = "mingw32"; then
1091       LN_S_FILEONLY='/bin/ln -s'
1092     else
1093       LN_S_FILEONLY='ln -s'
1094     fi
1095   elif ln conf$$.file conf$$ 2>/dev/null; then
1096     if test "$opsys" = "mingw32"; then
1097       LN_S_FILEONLY=/bin/ln
1098     else
1099       LN_S_FILEONLY=ln
1100     fi
1101   fi
1102 fi
1103
1104 rm -f conf$$ conf$$.file
1105
1106 if test "$LN_S_FILEONLY" = "ln -s"; then
1107    AC_MSG_RESULT([yes])
1108 else
1109    AC_MSG_RESULT([no, using $LN_S_FILEONLY])
1110 fi
1111
1112 AC_SUBST(LN_S_FILEONLY)
1113
1114
1115 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1116 dnl doesn't support links to directories, as in "ln file dir".  But that
1117 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1118 dnl executables at "make install" time.
1119 dnl See http://lists.gnu.org/archive/html/emacs-devel/2013-04/msg00475.html
1120 dnl for more details.
1121 if test "$opsys" = "mingw32"; then
1122   LN_S="/bin/ln"
1123 fi
1124
1125 dnl On some Debian versions, "install-info" prints irritating messages
1126 dnl "This is not dpkg install-info anymore, but GNU install-info"
1127 dnl if called via an absolute file name.
1128 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1129 dnl Sadly some people may have an old ginstall-info installed on
1130 dnl non-Debian systems, so we can't use this.
1131 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1132 dnl   $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1133
1134 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1135   $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1136 dnl Don't use GZIP, which is used by gzip for additional parameters.
1137 AC_PATH_PROG(GZIP_PROG, gzip)
1138
1139 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1140    GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1141
1142 if test $opsys = gnu-linux; then
1143   AC_PATH_PROG(PAXCTL, paxctl,,
1144     [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1145   if test "X$PAXCTL" != X; then
1146     AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1147     AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1148       [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then AC_MSG_RESULT(yes)
1149       else AC_MSG_RESULT(no); PAXCTL=""; fi])
1150   fi
1151
1152   if test "${SETFATTR+set}" != set; then
1153     AC_CACHE_CHECK([for setfattr],
1154       [emacs_cv_prog_setfattr],
1155       [touch conftest.tmp
1156        if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1157          emacs_cv_prog_setfattr=yes
1158        else
1159          emacs_cv_prog_setfattr=no
1160        fi])
1161     if test "$emacs_cv_prog_setfattr" = yes; then
1162       SETFATTR=setfattr
1163     else
1164       SETFATTR=
1165     fi
1166     rm -f conftest.tmp
1167     AC_SUBST([SETFATTR])
1168   fi
1169 fi
1170
1171 ## Need makeinfo >= 4.7 (?) to build the manuals.
1172 if test "$MAKEINFO" != "no"; then
1173   if test "$MAKEINFO" = "${am_missing_run}makeinfo"; then
1174     MAKEINFO=makeinfo
1175   fi
1176   case `($MAKEINFO --version) 2>/dev/null` in
1177     *' (GNU texinfo) '4.[[7-9]]* | \
1178     *' (GNU texinfo) '4.[[1-9][0-9]]* | \
1179     *' (GNU texinfo) '[[5-9]]* | \
1180     *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1181     *) MAKEINFO=no;;
1182   esac
1183 fi
1184
1185 ## Makeinfo is unusual.  For a released Emacs, the manuals are
1186 ## pre-built, and not deleted by the normal clean rules.  makeinfo is
1187 ## therefore in the category of "special tools" not normally required, which
1188 ## configure does not have to check for (eg autoconf itself).
1189 ## In a repository checkout on the other hand, the manuals are not included.
1190 ## So makeinfo is a requirement to build from the repository, and configure
1191 ## should test for it as it does for any other build requirement.
1192 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1193 ## with pre-built manuals, from a repository checkout.
1194 HAVE_MAKEINFO=yes
1195
1196 if test "$MAKEINFO" = "no"; then
1197   MAKEINFO=makeinfo
1198   if test "x${with_makeinfo}" = "xno"; then
1199     HAVE_MAKEINFO=no
1200   elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1201     AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.7, and your
1202 source tree does not seem to have pre-built manuals in the 'info' directory.
1203 Either install a suitable version of makeinfo, or re-run configure
1204 with the '--without-makeinfo' option to build without the manuals.] )
1205   fi
1206 fi
1207 AC_SUBST(HAVE_MAKEINFO)
1208
1209 if test $opsys = mingw32; then
1210    DOCMISC_W32=efaq-w32
1211 else
1212    DOCMISC_W32=
1213 fi
1214 AC_SUBST(DOCMISC_W32)
1215
1216 dnl Add our options to ac_link now, after it is set up.
1217
1218 if test x$GCC = xyes; then
1219   test "x$GCC_LINK_TEST_OPTIONS" != x && \
1220     ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1221 else
1222   test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1223     ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1224 fi
1225
1226 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1227 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1228 dnl (Don't use '-z nocombreloc' as -z takes no arg on Irix.)
1229 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1230 dnl if not built to support GNU ld.
1231
1232 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1233 dnl LD_SWITCH_SYSTEM_TEMACS.  That is:
1234 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1235 dnl   Eg "make LDFLAGS=... all" could run into problems,
1236 dnl   http://bugs.debian.org/684788
1237 dnl * unnecessary, since temacs is the only thing that actually needs it.
1238 dnl   Indeed this is where it was originally, prior to:
1239 dnl   http://lists.gnu.org/archive/html/emacs-pretest-bug/2004-03/msg00170.html
1240 late_LDFLAGS="$LDFLAGS"
1241 if test x$GCC = xyes; then
1242   LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1243 else
1244   LDFLAGS_NOCOMBRELOC="-znocombreloc"
1245 fi
1246
1247 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1248
1249 AC_MSG_CHECKING([for -znocombreloc])
1250 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1251   [AC_MSG_RESULT(yes)],
1252   LDFLAGS_NOCOMBRELOC=
1253   [AC_MSG_RESULT(no)])
1254
1255 LDFLAGS="$late_LDFLAGS"
1256
1257 AC_CACHE_CHECK([whether addresses are sanitized],
1258   [emacs_cv_sanitize_address],
1259   [AC_COMPILE_IFELSE(
1260      [AC_LANG_PROGRAM(
1261         [[#ifndef __has_feature
1262           #define __has_feature(f) 0
1263           #endif
1264           #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1265           #else
1266            error "Addresses are not sanitized.";
1267           #endif
1268         ]])],
1269      [emacs_cv_sanitize_address=yes],
1270      [emacs_cv_sanitize_address=no])])
1271
1272 dnl The function dump-emacs will not be defined and temacs will do
1273 dnl (load "loadup") automatically unless told otherwise.
1274 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1275 case "$opsys" in
1276   nacl) CANNOT_DUMP=yes ;;
1277 esac
1278
1279 if test "$CANNOT_DUMP" = "yes"; then
1280   AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1281 elif test "$emacs_cv_sanitize_address" = yes; then
1282   AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1283 fi
1284
1285 AC_SUBST(CANNOT_DUMP)
1286
1287
1288 UNEXEC_OBJ=unexelf.o
1289 case "$opsys" in
1290   # MSDOS uses unexcoff.o
1291   aix4-2)
1292    UNEXEC_OBJ=unexaix.o
1293    ;;
1294   cygwin)
1295    UNEXEC_OBJ=unexcw.o
1296    ;;
1297   darwin)
1298    UNEXEC_OBJ=unexmacosx.o
1299    ;;
1300   hpux10-20 | hpux11)
1301    UNEXEC_OBJ=unexhp9k800.o
1302    ;;
1303   mingw32)
1304    UNEXEC_OBJ=unexw32.o
1305    ;;
1306   sol2-10)
1307    # Use the Solaris dldump() function, called from unexsol.c, to dump
1308    # emacs, instead of the generic ELF dump code found in unexelf.c.
1309    # The resulting binary has a complete symbol table, and is better
1310    # for debugging and other observability tools (debuggers, pstack, etc).
1311    #
1312    # If you encounter a problem using dldump(), please consider sending
1313    # a message to the OpenSolaris tools-linking mailing list:
1314    #      http://mail.opensolaris.org/mailman/listinfo/tools-linking
1315    #
1316    # It is likely that dldump() works with older Solaris too, but this has
1317    # not been tested, so for now this change is for Solaris 10 or newer.
1318    UNEXEC_OBJ=unexsol.o
1319    ;;
1320 esac
1321
1322 LD_SWITCH_SYSTEM=
1323 case "$opsys" in
1324   freebsd|dragonfly)
1325    ## Let 'ld' find image libs and similar things in /usr/local/lib.
1326    ## The system compiler, GCC, has apparently been modified to not
1327    ## look there, contrary to what a stock GCC would do.
1328 ### It's not our place to do this.  See bug#10313#17.
1329 ###   LD_SWITCH_SYSTEM=-L/usr/local/lib
1330       :
1331    ;;
1332
1333   gnu-linux)
1334    ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1335    case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1336    ;;
1337
1338   netbsd)
1339 ### It's not our place to do this.  See bug#10313#17.
1340 ###   LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1341       :
1342    ;;
1343
1344   openbsd)
1345    ## Han Boetes <han@boetes.org> says this is necessary,
1346    ## otherwise Emacs dumps core on elf systems.
1347    LD_SWITCH_SYSTEM="-Z"
1348    ;;
1349 esac
1350 AC_SUBST(LD_SWITCH_SYSTEM)
1351
1352 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1353
1354 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1355 ## which has not been defined yet.  When this was handled with cpp,
1356 ## it was expanded to null when configure sourced the s/*.h file.
1357 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1358 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1359 ## (or somesuch), but because it is supposed to go at the _front_
1360 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1361 ## Compare with the gnu-linux case below, which added to the end
1362 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1363 ## LD_SWITCH_SYSTEM_TEMACS.
1364 case "$opsys" in
1365   netbsd|openbsd)
1366    LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1367 esac
1368
1369
1370 C_SWITCH_MACHINE=
1371 case $canonical in
1372  alpha*)
1373   AC_CHECK_DECL([__ELF__])
1374   if test "$ac_cv_have_decl___ELF__" = "yes"; then
1375     ## With ELF, make sure that all common symbols get allocated to in the
1376     ## data section.  Otherwise, the dump of temacs may miss variables in
1377     ## the shared library that have been initialized.  For example, with
1378     ## GNU libc, __malloc_initialized would normally be resolved to the
1379     ## shared library's .bss section, which is fatal.
1380     if test "x$GCC" = "xyes"; then
1381       C_SWITCH_MACHINE="-fno-common"
1382     else
1383       AC_MSG_ERROR([Non-GCC compilers are not supported.])
1384     fi
1385   else
1386       dnl This was the unexalpha.c case.  Removed in 24.1, 2010-07-24,
1387       dnl albeit under the mistaken assumption that said file
1388       dnl was no longer used.
1389       AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1390   fi
1391   ;;
1392 esac
1393 AC_SUBST(C_SWITCH_MACHINE)
1394
1395 AC_SUBST(UNEXEC_OBJ)
1396
1397 C_SWITCH_SYSTEM=
1398 ## Some programs in src produce warnings saying certain subprograms
1399 ## are too complex and need a MAXMEM value greater than 2000 for
1400 ## additional optimization.  --nils@exp-math.uni-essen.de
1401 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1402   C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1403 if test "$opsys" = "mingw32"; then
1404   case "$canonical" in
1405     x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1406     *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1407   esac
1408 fi
1409 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1410 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1411 AC_SUBST(C_SWITCH_SYSTEM)
1412
1413
1414 LIBS_SYSTEM=
1415 case "$opsys" in
1416   ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1417   aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1418
1419   freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1420
1421   hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1422
1423   sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1424
1425   ## Motif needs -lgen.
1426   unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1427 esac
1428
1429 AC_SUBST(LIBS_SYSTEM)
1430
1431 ### Make sure subsequent tests use flags consistent with the build flags.
1432
1433 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1434   CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1435 else
1436   CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1437 fi
1438
1439 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1440 AC_DEFUN([AC_TYPE_SIZE_T])
1441 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1442 AC_DEFUN([AC_TYPE_UID_T])
1443
1444 # sqrt and other floating-point functions such as fmod and frexp
1445 # are found in -lm on many systems.
1446 OLD_LIBS=$LIBS
1447 AC_SEARCH_LIBS([sqrt], [m])
1448 if test "X$LIBS" = "X$OLD_LIBS"; then
1449   LIB_MATH=
1450 else
1451   LIB_MATH=$ac_cv_search_sqrt
1452 fi
1453 LIBS=$OLD_LIBS
1454
1455 dnl Current possibilities handled by sed (aix4-2 -> aix,
1456 dnl gnu-linux -> gnu/linux, etc.):
1457 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux, irix.
1458 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1459 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1460
1461 case $opsys in
1462   cygwin )
1463     LIB_MATH=
1464     ;;
1465   darwin )
1466     ## Adding -lm confuses the dynamic linker, so omit it.
1467     LIB_MATH=
1468     ;;
1469   freebsd | dragonfly )
1470     SYSTEM_TYPE=berkeley-unix
1471     ;;
1472   gnu-linux | gnu-kfreebsd )
1473     ;;
1474   hpux10-20 | hpux11 )
1475     ;;
1476   mingw32 )
1477     LIB_MATH=
1478     SYSTEM_TYPE=windows-nt
1479     ;;
1480   dnl NB this may be adjusted below.
1481   netbsd | openbsd )
1482     SYSTEM_TYPE=berkeley-unix
1483     ;;
1484
1485   sol2* | unixware )
1486     SYSTEM_TYPE=usg-unix-v
1487     ;;
1488
1489 esac
1490
1491 AC_SUBST(LIB_MATH)
1492 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1493   [The type of system you are compiling for; sets 'system-type'.])
1494
1495
1496 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1497 pre_PKG_CONFIG_LIBS=$LIBS
1498
1499 PKG_PROG_PKG_CONFIG(0.9.0)
1500
1501 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1502 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1503 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1504 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1505 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1506 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1507 dnl actions.
1508 AC_DEFUN([EMACS_CHECK_MODULES],
1509   [PKG_CHECK_MODULES([$1], [$2],
1510      [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1511       m4_default([$3], [HAVE_$1=yes])],
1512      [m4_default([$4], [HAVE_$1=no])])])
1513
1514 HAVE_SOUND=no
1515 if test "${with_sound}" != "no"; then
1516   # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1517   AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1518     have_sound_header=yes, [], [
1519     #ifdef __MINGW32__
1520     #define WIN32_LEAN_AND_MEAN
1521     #include <windows.h>
1522     #endif
1523     ])
1524   test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1525     AC_MSG_ERROR([OSS sound support requested but not found.])
1526
1527   if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1528     # Emulation library used on NetBSD.
1529     AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1530     test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1531       AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1532     dnl FIXME?  If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1533     dnl Traditionally, we go on to check for alsa too.  Does that make sense?
1534   fi
1535   AC_SUBST(LIBSOUND)
1536
1537   if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1538     ALSA_REQUIRED=1.0.0
1539     ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1540     EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1541     if test $HAVE_ALSA = yes; then
1542       SAVE_CFLAGS="$CFLAGS"
1543       SAVE_LIBS="$LIBS"
1544       CFLAGS="$ALSA_CFLAGS $CFLAGS"
1545       LIBS="$ALSA_LIBS $LIBS"
1546       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1547                       emacs_alsa_normal=yes,
1548                     emacs_alsa_normal=no)
1549       if test "$emacs_alsa_normal" != yes; then
1550         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1551                        [[snd_lib_error_set_handler (0);]])],
1552                        emacs_alsa_subdir=yes,
1553                      emacs_alsa_subdir=no)
1554         if test "$emacs_alsa_subdir" != yes; then
1555           AC_MSG_ERROR([pkg-config found alsa, but it does not compile.  See config.log for error messages.])
1556         fi
1557         ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1558       fi
1559
1560       CFLAGS="$SAVE_CFLAGS"
1561       LIBS="$SAVE_LIBS"
1562       LIBSOUND="$LIBSOUND $ALSA_LIBS"
1563       CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1564       AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1565     elif test "${with_sound}" = "alsa"; then
1566       AC_MSG_ERROR([ALSA sound support requested but not found.])
1567     fi
1568   fi                            dnl with_sound = alsa|yes
1569
1570   dnl Define HAVE_SOUND if we have sound support.  We know it works and
1571   dnl compiles only on the specified platforms.  For others, it
1572   dnl probably doesn't make sense to try.
1573   dnl FIXME So surely we should bypass this whole section if not using
1574   dnl one of these platforms?
1575   if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1576      case "$opsys" in
1577        dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1578        dnl Adjust the --with-sound help text if you change this.
1579        gnu-linux|freebsd|netbsd|mingw32|cygwin)
1580          AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1581          HAVE_SOUND=yes
1582          ;;
1583      esac
1584   fi
1585
1586   AC_SUBST(CFLAGS_SOUND)
1587 fi
1588
1589 dnl checks for header files
1590 AC_CHECK_HEADERS_ONCE(
1591   sys/systeminfo.h
1592   sys/sysinfo.h
1593   coff.h pty.h
1594   sys/resource.h
1595   sys/utsname.h pwd.h utmp.h util.h)
1596
1597 AC_MSG_CHECKING(if personality LINUX32 can be set)
1598 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/personality.h>]], [[personality (PER_LINUX32)]])],
1599                emacs_cv_personality_linux32=yes,
1600                emacs_cv_personality_linux32=no)
1601 AC_MSG_RESULT($emacs_cv_personality_linux32)
1602
1603 if test $emacs_cv_personality_linux32 = yes; then
1604   AC_DEFINE(HAVE_PERSONALITY_LINUX32, 1,
1605             [Define to 1 if personality LINUX32 can be set.])
1606 fi
1607
1608 # Note that Solaris has sys/sysinfo.h which defines struct
1609 # sysinfo as well.  To make sure that we're using GNU/Linux
1610 # sysinfo, we explicitly set one of its fields.
1611 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1612   AC_MSG_CHECKING([if Linux sysinfo may be used])
1613   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1614                                      [[struct sysinfo si;
1615                                        si.totalram = 0;
1616                                        sysinfo (&si)]])],
1617     emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)
1618   AC_MSG_RESULT($emacs_cv_linux_sysinfo)
1619   if test $emacs_cv_linux_sysinfo = yes; then
1620     AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1621     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1622                                        [[struct sysinfo si; return si.mem_unit]])],
1623       AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1624                 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1625   fi
1626 fi
1627
1628 dnl On Solaris 8 there's a compilation warning for term.h because
1629 dnl it doesn't define 'bool'.
1630 AC_CHECK_HEADERS(term.h, , , -)
1631 AC_HEADER_TIME
1632 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1633                                       ]])
1634 if test $ac_cv_have_decl_sys_siglist != yes; then
1635   # For Tru64, at least:
1636   AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1637                                           ]])
1638 fi
1639 AC_HEADER_SYS_WAIT
1640
1641 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1642 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1643 #if HAVE_SYS_SOCKET_H
1644 #include <sys/socket.h>
1645 #endif])
1646 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1647 #if HAVE_SYS_SOCKET_H
1648 #include <sys/socket.h>
1649 #endif])
1650 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1651 #if HAVE_SYS_SOCKET_H
1652 #include <sys/socket.h>
1653 #endif])
1654
1655 dnl checks for structure members
1656 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1657                   struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1658                   struct ifreq.ifr_addr,
1659                   struct ifreq.ifr_addr.sa_len], , ,
1660                  [AC_INCLUDES_DEFAULT
1661 #if HAVE_SYS_SOCKET_H
1662 #include <sys/socket.h>
1663 #endif
1664 #if HAVE_NET_IF_H
1665 #include <net/if.h>
1666 #endif])
1667
1668 dnl Check for endianness.
1669 dnl AC_C_BIGENDIAN is done by gnulib.
1670
1671 dnl check for Make feature
1672
1673 AUTO_DEPEND=no
1674 dnl check if we have GCC and autodepend is on.
1675 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1676    AC_MSG_CHECKING([whether gcc understands -MMD -MF])
1677    SAVE_CFLAGS="$CFLAGS"
1678    CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1679    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], , ac_enable_autodepend=no)
1680    CFLAGS="$SAVE_CFLAGS"
1681    test -f deps.d || ac_enable_autodepend=no
1682    rm -rf deps.d
1683    AC_MSG_RESULT([$ac_enable_autodepend])
1684    if test $ac_enable_autodepend = yes; then
1685       AUTO_DEPEND=yes
1686    fi
1687 fi
1688 AC_SUBST(AUTO_DEPEND)
1689
1690 dnl checks for operating system services
1691 AC_SYS_LONG_FILE_NAMES
1692
1693 #### Choose a window system.
1694
1695 ## We leave window_system equal to none if
1696 ## we end up building without one.  Any new window system should
1697 ## set window_system to an appropriate value and add objects to
1698 ## window-system-specific substs.
1699
1700 window_system=none
1701 AC_PATH_X
1702 if test "$no_x" != yes; then
1703   window_system=x11
1704 fi
1705
1706 LD_SWITCH_X_SITE_RPATH=
1707 if test "${x_libraries}" != NONE; then
1708   if test -n "${x_libraries}"; then
1709     LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1710     LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1711       AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1712     `
1713   fi
1714   x_default_search_path=""
1715   x_search_path=${x_libraries}
1716   if test -z "${x_search_path}"; then
1717     x_search_path=/usr/lib
1718   fi
1719   for x_library in `AS_ECHO(["$x_search_path:"]) | \
1720                     sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1721     x_search_path="\
1722 ${x_library}/X11/%L/%T/%N%C%S:\
1723 ${x_library}/X11/%l/%T/%N%C%S:\
1724 ${x_library}/X11/%T/%N%C%S:\
1725 ${x_library}/X11/%L/%T/%N%S:\
1726 ${x_library}/X11/%l/%T/%N%S:\
1727 ${x_library}/X11/%T/%N%S"
1728     if test x"${x_default_search_path}" = x; then
1729       x_default_search_path=${x_search_path}
1730     else
1731       x_default_search_path="${x_search_path}:${x_default_search_path}"
1732     fi
1733   done
1734 fi
1735 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1736
1737 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1738   C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1739 fi
1740
1741 if test x"${x_includes}" = x; then
1742   bitmapdir=/usr/include/X11/bitmaps
1743 else
1744   # accumulate include directories that have X11 bitmap subdirectories
1745   bmd_acc=
1746   for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1747     if test -d "${bmd}/X11/bitmaps"; then
1748       bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1749     fi
1750     if test -d "${bmd}/bitmaps"; then
1751       bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1752     fi
1753   done
1754   bitmapdir=${bmd_acc#:}
1755 fi
1756
1757 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1758 HAVE_NS=no
1759 NS_GNUSTEP_CONFIG=no
1760 NS_IMPL_COCOA=no
1761 NS_IMPL_GNUSTEP=no
1762 tmp_CPPFLAGS="$CPPFLAGS"
1763 tmp_CFLAGS="$CFLAGS"
1764 CPPFLAGS="$CPPFLAGS -x objective-c"
1765 CFLAGS="$CFLAGS -x objective-c"
1766 GNU_OBJC_CFLAGS=
1767 LIBS_GNUSTEP=
1768 if test "${with_ns}" != no; then
1769   if test "${opsys}" = darwin; then
1770      NS_IMPL_COCOA=yes
1771      ns_appdir=`pwd`/nextstep/Emacs.app
1772      ns_appbindir=${ns_appdir}/Contents/MacOS
1773      ns_appresdir=${ns_appdir}/Contents/Resources
1774      ns_appsrc=Cocoa/Emacs.base
1775      ns_fontfile=macfont.o
1776   elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1777      NS_IMPL_GNUSTEP=yes
1778      NS_GNUSTEP_CONFIG=yes
1779      GNU_OBJC_CFLAGS=$flags
1780      LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1781   elif test -f $GNUSTEP_CONFIG_FILE; then
1782      NS_IMPL_GNUSTEP=yes
1783      dnl FIXME sourcing this several times in subshells seems inefficient.
1784      GNUSTEP_SYSTEM_HEADERS=$(
1785        . $GNUSTEP_CONFIG_FILE
1786        AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1787      )
1788      GNUSTEP_SYSTEM_LIBRARIES=$(
1789        . $GNUSTEP_CONFIG_FILE
1790        AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1791      )
1792      dnl I seemed to need these as well with GNUstep-startup 0.25.
1793      GNUSTEP_LOCAL_HEADERS=$(
1794        . $GNUSTEP_CONFIG_FILE
1795        AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1796      )
1797      GNUSTEP_LOCAL_LIBRARIES=$(
1798        . $GNUSTEP_CONFIG_FILE
1799        AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1800      )
1801      test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1802        GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1803      test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1804        GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1805      CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1806      CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1807      LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1808      LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1809      dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1810      dnl If they had chosen to either define it or not, we could have
1811      dnl just used AC_CHECK_DECL here.
1812      AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1813        emacs_cv_objc_exceptions,
1814 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1815 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1816 1;
1817 #else
1818 fail;
1819 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1820      if test $emacs_cv_objc_exceptions = yes; then
1821        dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1822        AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1823          [Define if GNUstep uses ObjC exceptions.])
1824        GNU_OBJC_CFLAGS="-fobjc-exceptions"
1825      fi
1826   fi
1827   if test $NS_IMPL_GNUSTEP = yes; then
1828      ns_appdir=`pwd`/nextstep/Emacs.app
1829      ns_appbindir=${ns_appdir}
1830      ns_appresdir=${ns_appdir}/Resources
1831      ns_appsrc=GNUstep/Emacs.base
1832      ns_fontfile=nsfont.o
1833   fi
1834
1835   dnl This is only used while we test the NS headers, it gets reset below.
1836   CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1837   CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1838
1839   AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1840                   [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1841 are required for a Nextstep build are missing or cannot be compiled.
1842 Either fix this, or re-configure with the option '--without-ns'.])])
1843
1844   macfont_file=""
1845   if test "${NS_IMPL_COCOA}" = "yes"; then
1846     AC_MSG_CHECKING([for OSX 10.6 or newer])
1847     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1848                                      [
1849 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1850 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1851  ; /* OK */
1852 #else
1853  error "OSX 10.6 or newer required";
1854 #endif
1855 #endif
1856                     ])],
1857                     ns_osx_have_106=yes,
1858                     ns_osx_have_106=no)
1859     AC_MSG_RESULT([$ns_osx_have_106])
1860
1861     if test $ns_osx_have_106 = no; then
1862        AC_MSG_ERROR([OSX 10.6 or newer is required]);
1863     fi
1864   fi
1865 fi
1866
1867 AC_SUBST(LIBS_GNUSTEP)
1868
1869 INSTALL_ARCH_INDEP_EXTRA=install-etc
1870 ns_self_contained=no
1871 NS_OBJ=
1872 NS_OBJC_OBJ=
1873 if test "${HAVE_NS}" = yes; then
1874   if test "$with_toolkit_scroll_bars" = "no"; then
1875     AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1876   fi
1877
1878   window_system=nextstep
1879   # set up packaging dirs
1880   if test "${EN_NS_SELF_CONTAINED}" = yes; then
1881      ns_self_contained=yes
1882      prefix=${ns_appresdir}
1883      exec_prefix=${ns_appbindir}
1884      dnl This one isn't really used, only archlibdir is.
1885      libexecdir="\${ns_appbindir}/libexec"
1886      archlibdir="\${ns_appbindir}/libexec"
1887      etcdocdir="\${ns_appresdir}/etc"
1888      etcdir="\${ns_appresdir}/etc"
1889      dnl FIXME maybe set datarootdir instead.
1890      dnl That would also get applications, icons, man.
1891      infodir="\${ns_appresdir}/info"
1892      mandir="\${ns_appresdir}/man"
1893      lispdir="\${ns_appresdir}/lisp"
1894      test "$locallisppathset" = no && locallisppath=""
1895      INSTALL_ARCH_INDEP_EXTRA=
1896   fi
1897
1898   NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1899 fi
1900 CFLAGS="$tmp_CFLAGS"
1901 CPPFLAGS="$tmp_CPPFLAGS"
1902 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1903 AC_SUBST(ns_self_contained)
1904 AC_SUBST(NS_OBJ)
1905 AC_SUBST(NS_OBJC_OBJ)
1906
1907 HAVE_W32=no
1908 W32_OBJ=
1909 W32_LIBS=
1910 EMACSRES=
1911 CLIENTRES=
1912 CLIENTW=
1913 W32_RES_LINK=
1914 EMACS_MANIFEST=
1915 UPDATE_MANIFEST=
1916 if test "${with_w32}" != no; then
1917   case "${opsys}" in
1918     cygwin)
1919       AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
1920              [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
1921                    cannot be found.])])
1922     ;;
1923     mingw32)
1924     ## Using --with-w32 with MinGW is a no-op, but we allow it.
1925     ;;
1926     *)
1927       AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
1928     ;;
1929   esac
1930 fi
1931
1932 if test "${opsys}" = "mingw32"; then
1933   AC_MSG_CHECKING([whether Windows API headers are recent enough])
1934   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1935      #include <windows.h>
1936      #include <usp10.h>]],
1937    [[PIMAGE_NT_HEADERS pHeader;
1938      PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
1939    [emacs_cv_w32api=yes
1940     HAVE_W32=yes],
1941    emacs_cv_w32api=no)
1942   AC_MSG_RESULT($emacs_cv_w32api)
1943   if test "${emacs_cv_w32api}" = "no"; then
1944     AC_MSG_ERROR([the Windows API headers are too old to support this build.])
1945   fi
1946 fi
1947
1948 FIRSTFILE_OBJ=
1949 NTDIR=
1950 LIBS_ECLIENT=
1951 LIB_WSOCK32=
1952 NTLIB=
1953 CM_OBJ="cm.o"
1954 XARGS_LIMIT=
1955 if test "${HAVE_W32}" = "yes"; then
1956   AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
1957   if test "$with_toolkit_scroll_bars" = "no"; then
1958     AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
1959   fi
1960   AC_CHECK_TOOL(WINDRES, [windres],
1961                 [AC_MSG_ERROR([No resource compiler found.])])
1962   W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
1963   W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
1964   EMACSRES="emacs.res"
1965   case "$canonical" in
1966     x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
1967     *) EMACS_MANIFEST="emacs-x86.manifest" ;;
1968   esac
1969   dnl Construct something of the form "24,4,0,0" with 4 components.
1970   comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
1971
1972   comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
1973   AC_SUBST(comma_version)
1974   AC_SUBST(comma_space_version)
1975   AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
1976   if test "${opsys}" = "cygwin"; then
1977     W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lgdi32 -lole32 -lcomdlg32"
1978     W32_LIBS="$W32_LIBS -lusp10 -lcomctl32 -lwinspool"
1979     # Tell the linker that emacs.res is an object (which we compile from
1980     # the rc file), not a linker script.
1981     W32_RES_LINK="-Wl,emacs.res"
1982   else
1983     UPDATE_MANIFEST=update-game-score.exe.manifest
1984     W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
1985     W32_LIBS="$W32_LIBS -lwinmm -lgdi32 -lcomdlg32"
1986     W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32 -lusp10"
1987     W32_RES_LINK="\$(EMACSRES)"
1988     CLIENTRES="emacsclient.res"
1989     CLIENTW="emacsclientw\$(EXEEXT)"
1990     FIRSTFILE_OBJ=firstfile.o
1991     NTDIR=nt
1992     CM_OBJ=
1993     LIBS_ECLIENT="-lcomctl32"
1994     LIB_WSOCK32="-lwsock32"
1995     NTLIB="ntlib.$ac_objext"
1996     XARGS_LIMIT="-s 10000"
1997   fi
1998 fi
1999 AC_SUBST(W32_OBJ)
2000 AC_SUBST(W32_LIBS)
2001 AC_SUBST(EMACSRES)
2002 AC_SUBST(EMACS_MANIFEST)
2003 AC_SUBST(UPDATE_MANIFEST)
2004 AC_SUBST(CLIENTRES)
2005 AC_SUBST(CLIENTW)
2006 AC_SUBST(W32_RES_LINK)
2007 AC_SUBST(FIRSTFILE_OBJ)
2008 AC_SUBST(NTDIR)
2009 AC_SUBST(CM_OBJ)
2010 AC_SUBST(LIBS_ECLIENT)
2011 AC_SUBST(LIB_WSOCK32)
2012 AC_SUBST(NTLIB)
2013 AC_SUBST(XARGS_LIMIT)
2014
2015 if test "${HAVE_W32}" = "yes"; then
2016   window_system=w32
2017   with_xft=no
2018 fi
2019
2020 ## $window_system is now set to the window system we will
2021 ## ultimately use.
2022
2023 if test "$window_system" = none && test "$gl_gcc_warnings" = yes; then
2024    # Too many warnings for now.
2025    nw=
2026    nw="$nw -Wsuggest-attribute=noreturn"
2027    gl_MANYWARN_COMPLEMENT([WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
2028
2029    gl_WARN_ADD([-Wno-unused-variable])
2030    gl_WARN_ADD([-Wno-unused-but-set-variable])
2031    gl_WARN_ADD([-Wno-unused-but-set-parameter])
2032 fi
2033
2034 term_header=
2035 HAVE_X_WINDOWS=no
2036 HAVE_X11=no
2037 USE_X_TOOLKIT=none
2038
2039 case "${window_system}" in
2040   x11 )
2041     HAVE_X_WINDOWS=yes
2042     HAVE_X11=yes
2043     term_header=xterm.h
2044     case "${with_x_toolkit}" in
2045       athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2046       motif ) USE_X_TOOLKIT=MOTIF ;;
2047       gtk ) with_gtk=yes
2048             term_header=gtkutil.h
2049 dnl Don't set this for GTK.  A lot of tests below assumes Xt when
2050 dnl USE_X_TOOLKIT is set.
2051             USE_X_TOOLKIT=none ;;
2052       gtk2 ) with_gtk2=yes
2053              term_header=gtkutil.h
2054              USE_X_TOOLKIT=none ;;
2055       gtk3 ) with_gtk3=yes
2056              term_header=gtkutil.h
2057              USE_X_TOOLKIT=none ;;
2058       no ) USE_X_TOOLKIT=none ;;
2059 dnl If user did not say whether to use a toolkit, make this decision later:
2060 dnl use the toolkit if we have gtk, or X11R5 or newer.
2061       * ) USE_X_TOOLKIT=maybe ;;
2062     esac
2063   ;;
2064   nextstep )
2065     term_header=nsterm.h
2066   ;;
2067   w32 )
2068     term_header=w32term.h
2069   ;;
2070 esac
2071
2072 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2073    AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2074    if test "$HAVE_XSERVER" = true ||
2075       test -n "$DISPLAY" ||
2076       {
2077         for emacs_libX11 in /usr/lib/libX11.*; do break; done
2078         test "$emacs_libX11" != '/usr/lib/libX11.*'
2079       }
2080    then
2081         AC_MSG_ERROR([You seem to be running X, but no X development libraries
2082 were found.  You should install the relevant development files for X
2083 and for the toolkit you want, such as Gtk+ or Motif.  Also make
2084 sure you have development files for image handling, i.e.
2085 tiff, gif, jpeg, png and xpm.
2086 If you are sure you want Emacs compiled without X window support, pass
2087   --without-x
2088 to configure.])
2089    fi
2090 fi
2091
2092 # Does the opsystem file prohibit the use of the GNU malloc?
2093 # Assume not, until told otherwise.
2094 GNU_MALLOC=yes
2095
2096 AC_CACHE_CHECK(
2097   [whether malloc is Doug Lea style],
2098   [emacs_cv_var_doug_lea_malloc],
2099   [emacs_cv_var_doug_lea_malloc=no
2100    dnl Hooks do not work with address sanitization.
2101    if test "$emacs_cv_sanitize_address" != yes; then
2102      AC_LINK_IFELSE(
2103        [AC_LANG_PROGRAM(
2104           [[#include <malloc.h>
2105             static void hook (void) {}]],
2106           [[malloc_set_state (malloc_get_state ());
2107             __after_morecore_hook = hook;
2108             __malloc_initialize_hook = hook;]])],
2109        [emacs_cv_var_doug_lea_malloc=yes])
2110    fi])
2111 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2112
2113 system_malloc=$emacs_cv_sanitize_address
2114
2115 hybrid_malloc=
2116
2117 case "$opsys" in
2118   ## darwin ld insists on the use of malloc routines in the System framework.
2119   darwin | mingw32 | nacl | sol2-10) system_malloc=yes ;;
2120   cygwin) hybrid_malloc=yes;;
2121 esac
2122
2123 GMALLOC_OBJ=
2124 if test "${system_malloc}" = "yes"; then
2125   AC_DEFINE([SYSTEM_MALLOC], 1,
2126     [Define to 1 to use the system memory allocator, even if it is not
2127      Doug Lea style.])
2128   GNU_MALLOC=no
2129   GNU_MALLOC_reason="
2130     (The GNU allocators don't work with this system configuration.)"
2131   VMLIMIT_OBJ=
2132 elif test "$hybrid_malloc" = yes; then
2133   AC_DEFINE(HYBRID_MALLOC, 1,
2134     [Define to use gmalloc before dumping and the system malloc after.])
2135   GNU_MALLOC=
2136   GNU_MALLOC_reason="only before dumping"
2137   GMALLOC_OBJ=gmalloc.o
2138   VMLIMIT_OBJ=
2139 else
2140   test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2141   VMLIMIT_OBJ=vm-limit.o
2142
2143   AC_CHECK_HEADERS([sys/vlimit.h])
2144   AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2145     [AC_LINK_IFELSE(
2146        [AC_LANG_PROGRAM(
2147          [[extern char data_start[]; char ch;]],
2148          [[return data_start < &ch;]])],
2149        [emacs_cv_data_start=yes],
2150        [emacs_cv_data_start=no])])
2151   if test $emacs_cv_data_start = yes; then
2152     AC_DEFINE([HAVE_DATA_START], 1,
2153       [Define to 1 if data_start is the address of the start
2154        of the main data segment.])
2155   fi
2156 fi
2157 AC_SUBST(GMALLOC_OBJ)
2158 AC_SUBST(VMLIMIT_OBJ)
2159
2160 if test "$doug_lea_malloc" = "yes" ; then
2161   if test "$GNU_MALLOC" = yes ; then
2162     GNU_MALLOC_reason="
2163       (Using Doug Lea's new malloc from the GNU C Library.)"
2164   fi
2165   AC_DEFINE(DOUG_LEA_MALLOC, 1,
2166     [Define to 1 if the system memory allocator is Doug Lea style,
2167      with malloc hooks and malloc_set_state.])
2168
2169   ## Use mmap directly for allocating larger buffers.
2170   ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2171   ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2172   ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2173   case "$opsys" in
2174     mingw32|gnu*) REL_ALLOC=no ;;
2175   esac
2176 fi
2177
2178 if test x"${REL_ALLOC}" = x; then
2179   REL_ALLOC=${GNU_MALLOC}
2180 fi
2181
2182 use_mmap_for_buffers=no
2183 case "$opsys" in
2184   cygwin|mingw32|freebsd|irix6-5) use_mmap_for_buffers=yes ;;
2185 esac
2186
2187 AC_FUNC_MMAP
2188 if test $use_mmap_for_buffers = yes; then
2189   AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2190   REL_ALLOC=no
2191 fi
2192
2193 LIBS="$LIBS_SYSTEM $LIBS"
2194
2195 dnl FIXME replace main with a function we actually want from this library.
2196 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2197
2198 dnl Check for the POSIX thread library.
2199 LIB_PTHREAD=
2200 AC_CHECK_HEADERS_ONCE(pthread.h)
2201 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2202   AC_CACHE_CHECK([for pthread library],
2203     [emacs_cv_pthread_lib],
2204     [emacs_cv_pthread_lib=no
2205      OLD_LIBS=$LIBS
2206      for emacs_pthread_lib in 'none needed' -lpthread; do
2207        case $emacs_pthread_lib in
2208          -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2209        esac
2210        AC_LINK_IFELSE(
2211          [AC_LANG_PROGRAM(
2212             [[#include <pthread.h>
2213               #include <signal.h>
2214               sigset_t old_mask, new_mask;
2215               void noop (void) {}]],
2216             [[pthread_t th = pthread_self ();
2217               int status = 0;
2218               status += pthread_create (&th, 0, 0, 0);
2219               status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2220               status += pthread_kill (th, 0);
2221               #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2222                      || defined DOUG_LEA_MALLOC)
2223               /* Test for pthread_atfork only if gmalloc uses it,
2224                  as older-style hosts like MirBSD 10 lack it.  */
2225               status += pthread_atfork (noop, noop, noop);
2226               #endif
2227               return status;]])],
2228          [emacs_cv_pthread_lib=$emacs_pthread_lib])
2229        LIBS=$OLD_LIBS
2230        if test "$emacs_cv_pthread_lib" != no; then
2231          break
2232        fi
2233      done])
2234   if test "$emacs_cv_pthread_lib" != no; then
2235     AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2236     case $emacs_cv_pthread_lib in
2237       -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2238     esac
2239     ac_cv_func_pthread_sigmask=yes
2240     # Some systems optimize for single-threaded programs by default, and
2241     # need special flags to disable these optimizations. For example, the
2242     # definition of 'errno' in <errno.h>.
2243     case $opsys in
2244       hpux* | sol*)
2245         AC_DEFINE([_REENTRANT], 1,
2246           [Define to 1 if your system requires this in multithreaded code.]);;
2247       aix4-2)
2248         AC_DEFINE([_THREAD_SAFE], 1,
2249           [Define to 1 if your system requires this in multithreaded code.]);;
2250     esac
2251   fi
2252 fi
2253 AC_SUBST([LIB_PTHREAD])
2254
2255 dnl Check for need for bigtoc support on IBM AIX
2256
2257 case ${host_os} in
2258 aix*)
2259   AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2260     case $GCC in
2261     yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2262     *) gdb_cv_bigtoc=-bbigtoc ;;
2263     esac
2264
2265     LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2266     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2267   ])
2268   ;;
2269 esac
2270
2271 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2272 # is for the tests that follow.  We set them back later on.
2273
2274 REAL_CFLAGS="$CFLAGS"
2275 REAL_CPPFLAGS="$CPPFLAGS"
2276 REAL_LIBS="$LIBS"
2277
2278 if test "${HAVE_X11}" = "yes"; then
2279   DEFS="$C_SWITCH_X_SITE $DEFS"
2280   LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2281   LIBS="-lX11 $LIBS"
2282   CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2283   CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2284
2285   # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2286   # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2287   # but it's more convenient here to set LD_RUN_PATH since this
2288   # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2289   if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2290     LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2291     export LD_RUN_PATH
2292   fi
2293
2294   if test "${opsys}" = "gnu-linux"; then
2295     AC_MSG_CHECKING(whether X on GNU/Linux needs -b to link)
2296     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2297      [[XOpenDisplay ("foo");]])],
2298      [xgnu_linux_first_failure=no],
2299      [xgnu_linux_first_failure=yes])
2300     if test "${xgnu_linux_first_failure}" = "yes"; then
2301       OLD_CPPFLAGS="$CPPFLAGS"
2302       OLD_LIBS="$LIBS"
2303       CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2304       LIBS="$LIBS -b i486-linuxaout"
2305       AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2306        [[XOpenDisplay ("foo");]])],
2307        [xgnu_linux_second_failure=no],
2308        [xgnu_linux_second_failure=yes])
2309       if test "${xgnu_linux_second_failure}" = "yes"; then
2310         # If we get the same failure with -b, there is no use adding -b.
2311         # So leave it out.  This plays safe.
2312         AC_MSG_RESULT(no)
2313       else
2314         LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2315         C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2316         AC_MSG_RESULT(yes)
2317       fi
2318       CPPFLAGS=$OLD_CPPFLAGS
2319       LIBS=$OLD_LIBS
2320     else
2321       AC_MSG_RESULT(no)
2322     fi
2323   fi
2324
2325   # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2326   # header files included from there.
2327   AC_MSG_CHECKING(for Xkb)
2328   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2329 #include <X11/XKBlib.h>]],
2330         [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2331         emacs_xkb=yes, emacs_xkb=no)
2332   AC_MSG_RESULT($emacs_xkb)
2333   if test $emacs_xkb = yes; then
2334     AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2335   fi
2336
2337   AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2338 XScreenNumberOfScreen)
2339 fi
2340
2341 if test "${window_system}" = "x11"; then
2342   AC_MSG_CHECKING(X11 version 6)
2343   AC_CACHE_VAL(emacs_cv_x11_version_6,
2344   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2345 [[#if XlibSpecificationRelease < 6
2346 fail;
2347 #endif
2348 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2349   if test $emacs_cv_x11_version_6 = yes; then
2350     AC_MSG_RESULT(6 or newer)
2351     AC_DEFINE(HAVE_X11R6, 1,
2352               [Define to 1 if you have the X11R6 or newer version of Xlib.])
2353     AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2354     ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2355     ## XIM support.
2356     case "$opsys" in
2357       sol2-*) : ;;
2358       *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2359            [Define if you have usable X11R6-style XIM support.])
2360          ;;
2361     esac
2362   else
2363     AC_MSG_RESULT(before 6)
2364   fi
2365 fi
2366
2367
2368 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2369 HAVE_RSVG=no
2370 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2371   if test "${with_rsvg}" != "no"; then
2372     RSVG_REQUIRED=2.11.0
2373     RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2374
2375     EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2376     AC_SUBST(RSVG_CFLAGS)
2377     AC_SUBST(RSVG_LIBS)
2378
2379     if test $HAVE_RSVG = yes; then
2380       AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2381       CFLAGS="$CFLAGS $RSVG_CFLAGS"
2382       # Windows loads librsvg dynamically
2383       if test "${opsys}" = "mingw32"; then
2384         RSVG_LIBS=
2385       fi
2386     fi
2387   fi
2388 fi
2389
2390 HAVE_IMAGEMAGICK=no
2391 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2392   if test "${with_imagemagick}" != "no"; then
2393     ## 6.3.5 is the earliest version known to work; see Bug#17339.
2394     ## 6.8.2 makes Emacs crash; see Bug#13867.
2395     IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2"
2396     EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2397     AC_SUBST(IMAGEMAGICK_CFLAGS)
2398     AC_SUBST(IMAGEMAGICK_LIBS)
2399
2400     if test $HAVE_IMAGEMAGICK = yes; then
2401       AC_DEFINE(HAVE_IMAGEMAGICK, 1, [Define to 1 if using imagemagick.])
2402       OLD_CFLAGS=$CFLAGS
2403       OLD_LIBS=$LIBS
2404       CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2405       LIBS="$IMAGEMAGICK_LIBS $LIBS"
2406       AC_CHECK_FUNCS(MagickExportImagePixels MagickMergeImageLayers)
2407       CFLAGS=$OLD_CFLAGS
2408       LIBS=$OLD_LIBS
2409     fi
2410   fi
2411 fi
2412
2413
2414 HAVE_GTK=no
2415 GTK_OBJ=
2416 gtk_term_header=$term_header
2417 check_gtk2=no
2418 gtk3_pkg_errors=
2419 if test "${opsys}" != "mingw32"; then
2420   if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2421     GLIB_REQUIRED=2.28
2422     GTK_REQUIRED=3.0
2423     GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2424
2425     dnl Checks for libraries.
2426     EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2427       [pkg_check_gtk=yes], [pkg_check_gtk=no])
2428     if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2429        AC_MSG_ERROR($GTK_PKG_ERRORS)
2430     fi
2431     if test "$pkg_check_gtk" = "yes"; then
2432        AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2433        GTK_OBJ=emacsgtkfixed.o
2434        gtk_term_header=gtkutil.h
2435        USE_GTK_TOOLKIT="GTK3"
2436        if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2437          AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2438            [Define to 1 to disable GTK+/GDK deprecation warnings.])
2439          AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2440            [Define to 1 to disable Glib deprecation warnings.])
2441        fi
2442     else
2443        check_gtk2=yes
2444        gtk3_pkg_errors="$GTK_PKG_ERRORS "
2445     fi
2446   fi
2447
2448   if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2449     GLIB_REQUIRED=2.10
2450     GTK_REQUIRED=2.10
2451     GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2452
2453     dnl Checks for libraries.
2454     EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2455       [pkg_check_gtk=yes], [pkg_check_gtk=no])
2456     if test "$pkg_check_gtk" = "no" &&
2457        { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2458     then
2459       AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2460     fi
2461     test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2462   fi
2463 fi
2464
2465 OLD_CFLAGS=$CFLAGS
2466 OLD_LIBS=$LIBS
2467
2468 if test x"$pkg_check_gtk" = xyes; then
2469
2470   AC_SUBST(GTK_LIBS)
2471   CFLAGS="$CFLAGS $GTK_CFLAGS"
2472   LIBS="$GTK_LIBS $LIBS"
2473   dnl Try to compile a simple GTK program.
2474   AC_MSG_CHECKING([whether GTK compiles])
2475   GTK_COMPILES=no
2476   AC_LINK_IFELSE(
2477     [AC_LANG_PROGRAM(
2478        [[/* Check the Gtk and Glib APIs.  */
2479          #include <gtk/gtk.h>
2480          #include <glib-object.h>
2481          static void
2482          callback (GObject *go, GParamSpec *spec, gpointer user_data)
2483          {}
2484        ]],
2485        [[
2486          GtkSettings *gs = 0;
2487          /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2488             strict C prohibits this.  Use gtk_main_iteration to test that the
2489             libraries are there.  */
2490          if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2491                                     0, 0, 0, G_CALLBACK (callback), 0))
2492            gtk_main_iteration ();
2493        ]])],
2494     [GTK_COMPILES=yes])
2495   AC_MSG_RESULT([$GTK_COMPILES])
2496   if test "${GTK_COMPILES}" != "yes"; then
2497     GTK_OBJ=
2498     if test "$USE_X_TOOLKIT" != "maybe"; then
2499       AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log.  Maybe some x11-devel files missing?]);
2500     fi
2501   else
2502     C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2503     HAVE_GTK=yes
2504     AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2505     GTK_OBJ="gtkutil.o $GTK_OBJ"
2506     term_header=$gtk_term_header
2507     USE_X_TOOLKIT=none
2508     AC_MSG_WARN([[Your version of Gtk+ will have problems with
2509        closing open displays.  This is no problem if you just use
2510        one display, but if you use more than one and close one of them
2511        Emacs may crash.
2512        See http://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2513     sleep 3
2514   fi
2515
2516 fi
2517 AC_SUBST(GTK_OBJ)
2518
2519
2520 if test "${HAVE_GTK}" = "yes"; then
2521
2522   dnl  GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2523   dnl  a lot if #ifdef:s, say we have toolkit scrollbars.
2524   if test "$with_toolkit_scroll_bars" != no; then
2525     with_toolkit_scroll_bars=yes
2526   fi
2527
2528   dnl  Check if we have the old file selection dialog declared and
2529   dnl  in the link library.  In 2.x it may be in the library,
2530   dnl  but not declared if deprecated featured has been selected out.
2531   dnl  AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2532   HAVE_GTK_FILE_SELECTION=no
2533   AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2534                    HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2535 #include <gtk/gtk.h>])
2536   if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2537     AC_CHECK_FUNCS(gtk_file_selection_new)
2538   fi
2539
2540   dnl Same as above for gtk_handle_box.
2541   HAVE_GTK_HANDLE_BOX=no
2542   AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2543                    HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2544 #include <gtk/gtk.h>])
2545   if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2546     AC_CHECK_FUNCS(gtk_handle_box_new)
2547   fi
2548
2549   dnl Same as above for gtk_tearoff_menu_item.
2550   HAVE_GTK_TEAROFF_MENU_ITEM=no
2551   AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2552                    HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2553 #include <gtk/gtk.h>])
2554   if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2555     AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2556   fi
2557
2558   dnl Check for functions introduced in 2.14 and later.
2559   AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2560                  gtk_dialog_get_action_area gtk_widget_get_sensitive \
2561                  gtk_widget_get_mapped gtk_adjustment_get_page_size \
2562                  gtk_orientable_set_orientation \
2563                  gtk_window_set_has_resize_grip)
2564
2565  term_header=gtkutil.h
2566 fi
2567
2568
2569 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2570 HAVE_XWIDGETS=no
2571 XWIDGETS_OBJ=
2572 DOES_XWIDGETS_USE_GIR=
2573 if test "$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
2587   GIR_REQUIRED=1.32.1
2588   GIR_MODULES="gobject-introspection-1.0 >= $GIR_REQUIRED"
2589   EMACS_CHECK_MODULES([GIR], [$GIR_MODULES])
2590   if test $HAVE_GIR = yes; then
2591      AC_DEFINE([HAVE_GIR], 1, [Define to 1 if you have GIR support.])
2592   fi
2593   DOES_XWIDGETS_USE_GIR="\
2594       Does Xwidgets use gobject introspection?            $HAVE_GIR"
2595 fi
2596 AC_SUBST(XWIDGETS_OBJ)
2597
2598 CFLAGS=$OLD_CFLAGS
2599 LIBS=$OLD_LIBS
2600
2601 dnl D-Bus has been tested under GNU/Linux only.  Must be adapted for
2602 dnl other platforms.
2603 HAVE_DBUS=no
2604 DBUS_OBJ=
2605 if test "${with_dbus}" = "yes"; then
2606    EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2607    if test "$HAVE_DBUS" = yes; then
2608      AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2609      dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2610      dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2611      dnl D-Bus 1.5.12.
2612      OLD_LIBS=$LIBS
2613      LIBS="$LIBS $DBUS_LIBS"
2614      AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2615                     dbus_type_is_valid \
2616                     dbus_validate_bus_name \
2617                     dbus_validate_path \
2618                     dbus_validate_interface \
2619                     dbus_validate_member)
2620      LIBS=$OLD_LIBS
2621      DBUS_OBJ=dbusbind.o
2622    fi
2623 fi
2624 AC_SUBST(DBUS_CFLAGS)
2625 AC_SUBST(DBUS_LIBS)
2626 AC_SUBST(DBUS_OBJ)
2627
2628 dnl GSettings has been tested under GNU/Linux only.
2629 HAVE_GSETTINGS=no
2630 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2631    EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2632    if test "$HAVE_GSETTINGS" = "yes"; then
2633       old_CFLAGS=$CFLAGS
2634       CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2635       old_LIBS=$LIBS
2636       LIBS="$LIBS $GSETTINGS_LIBS"
2637       AC_MSG_CHECKING([whether GSettings is in gio])
2638       AC_LINK_IFELSE(
2639          [AC_LANG_PROGRAM(
2640              [[/* Check that gsettings really is present.  */
2641              #include <glib-object.h>
2642              #include <gio/gio.h>
2643              ]],
2644              [[
2645                GSettings *settings;
2646                GVariant *val = g_settings_get_value (settings, "");
2647              ]])],
2648          [], HAVE_GSETTINGS=no)
2649       AC_MSG_RESULT([$HAVE_GSETTINGS])
2650
2651       if test "$HAVE_GSETTINGS" = "yes"; then
2652         AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2653         SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2654         SETTINGS_LIBS="$GSETTINGS_LIBS"
2655       fi
2656       CFLAGS=$old_CFLAGS
2657       LIBS=$old_LIBS
2658    fi
2659 fi
2660
2661 dnl GConf has been tested under GNU/Linux only.
2662 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2663 HAVE_GCONF=no
2664 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" = "yes"; then
2665    EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2666    if test "$HAVE_GCONF" = yes; then
2667       AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2668       dnl Newer GConf doesn't link with g_objects, so this is not defined.
2669       SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2670       SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2671    fi
2672 fi
2673
2674 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2675     EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2676     if test "$HAVE_GOBJECT" = "yes"; then
2677        SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2678        SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2679     fi
2680     SAVE_CFLAGS="$CFLAGS"
2681     SAVE_LIBS="$LIBS"
2682     CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2683     LIBS="$SETTINGS_LIBS $LIBS"
2684     CFLAGS="$SAVE_CFLAGS"
2685     LIBS="$SAVE_LIBS"
2686 fi
2687 AC_SUBST(SETTINGS_CFLAGS)
2688 AC_SUBST(SETTINGS_LIBS)
2689
2690
2691 dnl SELinux is available for GNU/Linux only.
2692 HAVE_LIBSELINUX=no
2693 LIBSELINUX_LIBS=
2694 if test "${with_selinux}" = "yes"; then
2695    AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2696    if test "$HAVE_LIBSELINUX" = yes; then
2697       AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2698       LIBSELINUX_LIBS=-lselinux
2699    fi
2700 fi
2701 AC_SUBST(LIBSELINUX_LIBS)
2702
2703 HAVE_GNUTLS=no
2704 if test "${with_gnutls}" = "yes" ; then
2705   EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.6.6],
2706     [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2707   if test "${HAVE_GNUTLS}" = "yes"; then
2708     AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2709     EMACS_CHECK_MODULES([LIBGNUTLS3], [gnutls >= 3.0.0],
2710       [AC_DEFINE(HAVE_GNUTLS3, 1, [Define if using GnuTLS v3.])], [])
2711   fi
2712
2713   # Windows loads GnuTLS dynamically
2714   if test "${opsys}" = "mingw32"; then
2715     LIBGNUTLS_LIBS=
2716   fi
2717 fi
2718
2719 AC_SUBST(LIBGNUTLS_LIBS)
2720 AC_SUBST(LIBGNUTLS_CFLAGS)
2721
2722 NOTIFY_OBJ=
2723 NOTIFY_SUMMARY=no
2724
2725 dnl FIXME?  Don't auto-detect on NS, but do allow someone to specify
2726 dnl a particular library.  This doesn't make much sense?
2727 if test "${HAVE_NS}" = yes && test ${with_file_notification} = yes; then
2728   with_file_notification=no
2729 fi
2730
2731 dnl MS Windows native file monitor is available for mingw32 only.
2732 case $with_file_notification,$opsys in
2733   w32,cygwin)
2734     AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2735     this is only supported on MS-Windows native and MinGW32 builds.
2736     Consider using gfile instead.])
2737     ;;
2738   w32,* | yes,mingw32)
2739     AC_CHECK_HEADER(windows.h)
2740     if test "$ac_cv_header_windows_h" = yes ; then
2741        AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2742        NOTIFY_OBJ=w32notify.o
2743        NOTIFY_SUMMARY="yes (w32)"
2744     fi ;;
2745 esac
2746
2747 dnl inotify is available only on GNU/Linux.
2748 case $with_file_notification,$NOTIFY_OBJ in
2749   inotify, | yes,)
2750     AC_CHECK_HEADER(sys/inotify.h)
2751     if test "$ac_cv_header_sys_inotify_h" = yes ; then
2752         AC_CHECK_FUNC(inotify_init1)
2753         if test "$ac_cv_func_inotify_init1" = yes; then
2754           AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2755           NOTIFY_OBJ=inotify.o
2756           NOTIFY_SUMMARY="yes -lglibc (inotify)"
2757        fi
2758     fi ;;
2759 esac
2760
2761 dnl g_file_monitor exists since glib 2.18.  G_FILE_MONITOR_EVENT_MOVED
2762 dnl has been added in glib 2.24.  It has been tested under
2763 dnl GNU/Linux only.
2764 case $with_file_notification,$NOTIFY_OBJ in
2765   gfile,* | yes,)
2766     EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2767     if test "$HAVE_GFILENOTIFY" = "yes"; then
2768        AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2769        NOTIFY_OBJ=gfilenotify.o
2770        NOTIFY_SUMMARY="yes -lgio (gfile)"
2771     fi ;;
2772 esac
2773
2774 case $with_file_notification,$NOTIFY_OBJ in
2775   yes,* | no,* | *,?*) ;;
2776   *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2777 esac
2778
2779 if test -n "$NOTIFY_OBJ"; then
2780    AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2781 fi
2782 AC_SUBST(NOTIFY_OBJ)
2783 AC_SUBST(GFILENOTIFY_CFLAGS)
2784 AC_SUBST(GFILENOTIFY_LIBS)
2785
2786 dnl Do not put whitespace before the #include statements below.
2787 dnl Older compilers (eg sunos4 cc) choke on it.
2788 HAVE_XAW3D=no
2789 LUCID_LIBW=
2790 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2791   if test "$with_xaw3d" != no; then
2792     AC_CACHE_VAL(emacs_cv_xaw3d,
2793     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2794 #include <X11/Intrinsic.h>
2795 #include <X11/Xaw3d/Simple.h>]],
2796       [[]])],
2797       [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2798                     emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2799       emacs_cv_xaw3d=no)])
2800   else
2801     emacs_cv_xaw3d=no
2802   fi
2803   if test $emacs_cv_xaw3d = yes; then
2804     AC_MSG_CHECKING(for xaw3d)
2805     AC_MSG_RESULT([yes; using Lucid toolkit])
2806     USE_X_TOOLKIT=LUCID
2807     HAVE_XAW3D=yes
2808     LUCID_LIBW=-lXaw3d
2809     AC_DEFINE(HAVE_XAW3D, 1,
2810               [Define to 1 if you have the Xaw3d library (-lXaw3d).])
2811   else
2812     AC_MSG_CHECKING(for xaw3d)
2813     AC_MSG_RESULT(no)
2814     AC_MSG_CHECKING(for libXaw)
2815     AC_CACHE_VAL(emacs_cv_xaw,
2816     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2817 #include <X11/Intrinsic.h>
2818 #include <X11/Xaw/Simple.h>]],
2819       [[]])],
2820       emacs_cv_xaw=yes,
2821       emacs_cv_xaw=no)])
2822     if test $emacs_cv_xaw = yes; then
2823       AC_MSG_RESULT([yes; using Lucid toolkit])
2824       USE_X_TOOLKIT=LUCID
2825       LUCID_LIBW=-lXaw
2826     elif test x"${USE_X_TOOLKIT}" = xLUCID; then
2827       AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
2828     else
2829       AC_MSG_ERROR([No X toolkit could be found.
2830 If you are sure you want Emacs compiled without an X toolkit, pass
2831   --with-x-toolkit=no
2832 to configure.  Otherwise, install the development libraries for the toolkit
2833 that you want to use (e.g. Gtk+) and re-run configure.])
2834     fi
2835   fi
2836 fi
2837
2838 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
2839
2840 LIBXTR6=
2841 LIBXMU=
2842 if test "${USE_X_TOOLKIT}" != "none"; then
2843   AC_MSG_CHECKING(X11 toolkit version)
2844   AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
2845   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
2846 [[#if XtSpecificationRelease < 6
2847 fail;
2848 #endif
2849 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
2850   HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
2851   if test $emacs_cv_x11_toolkit_version_6 = yes; then
2852     AC_MSG_RESULT(6 or newer)
2853     AC_DEFINE(HAVE_X11XTR6, 1,
2854               [Define to 1 if you have the X11R6 or newer version of Xt.])
2855     LIBXTR6="-lSM -lICE"
2856     case "$opsys" in
2857       ## Use libw.a along with X11R6 Xt.
2858       unixware) LIBXTR6="$LIBXTR6 -lw" ;;
2859     esac
2860   else
2861     AC_MSG_RESULT(before 6)
2862   fi
2863
2864 dnl If using toolkit, check whether libXmu.a exists.
2865 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
2866   OLDLIBS="$LIBS"
2867   if test x$HAVE_X11XTR6 = xyes; then
2868     OTHERLIBS='-lXt -lSM -lICE'
2869   else
2870     OTHERLIBS='-lXt'
2871   fi
2872   AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
2873   if test "X$LIBS" != "X$OLDLIBS"; then
2874     LIBXMU=$ac_cv_search_XmuConvertStandardSelection
2875   fi
2876   LIBS=$OLDLIBS
2877   dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
2878 fi
2879 AC_SUBST(LIBXTR6)
2880 AC_SUBST(LIBXMU)
2881
2882 LIBXP=
2883 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
2884   # OpenMotif may be installed in such a way on some GNU/Linux systems.
2885   if test -d /usr/include/openmotif; then
2886     CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
2887     emacs_cv_openmotif=yes
2888     case "$canonical" in
2889       x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
2890       test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
2891       ;;
2892       *)
2893       test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
2894     esac
2895   else
2896     emacs_cv_openmotif=no
2897   fi
2898   AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
2899   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
2900     [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
2901 int x = 5;
2902 #else
2903 Motif version prior to 2.1.
2904 #endif]])],
2905     emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
2906   if test $emacs_cv_motif_version_2_1 = yes; then
2907     AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
2908     if test x$emacs_cv_openmotif = xyes; then
2909       REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
2910     fi
2911   else
2912     AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
2913     # We put this in CFLAGS temporarily to precede other -I options
2914     # that might be in CFLAGS temporarily.
2915     # We put this in CPPFLAGS where it precedes the other -I options.
2916     OLD_CPPFLAGS=$CPPFLAGS
2917     OLD_CFLAGS=$CFLAGS
2918     CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
2919     CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
2920     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
2921       [[int x = 5;]])],
2922       emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
2923     if test $emacs_cv_lesstif = yes; then
2924       # Make sure this -I option remains in CPPFLAGS after it is set
2925       # back to REAL_CPPFLAGS.
2926       # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
2927       # have those other -I options anyway.  Ultimately, having this
2928       # directory ultimately in CPPFLAGS will be enough.
2929       REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
2930       LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
2931     else
2932       CFLAGS=$OLD_CFLAGS
2933       CPPFLAGS=$OLD_CPPFLAGS
2934     fi
2935   fi
2936   AC_CHECK_HEADER([Xm/BulletinB.h], [],
2937     [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
2938 fi
2939
2940 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
2941 dnl using Motif or Xaw3d is available, and unless
2942 dnl --with-toolkit-scroll-bars=no was specified.
2943
2944 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
2945             [Define to 1 if we should use toolkit scroll bars.])dnl
2946 USE_TOOLKIT_SCROLL_BARS=no
2947 if test "${with_toolkit_scroll_bars}" != "no"; then
2948   if test "${USE_X_TOOLKIT}" != "none"; then
2949     if test "${USE_X_TOOLKIT}" = "MOTIF"; then
2950       AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2951       HAVE_XAW3D=no
2952       USE_TOOLKIT_SCROLL_BARS=yes
2953     elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
2954       AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2955       USE_TOOLKIT_SCROLL_BARS=yes
2956     fi
2957   elif test "${HAVE_GTK}" = "yes"; then
2958     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2959     USE_TOOLKIT_SCROLL_BARS=yes
2960   elif test "${HAVE_NS}" = "yes"; then
2961     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2962     USE_TOOLKIT_SCROLL_BARS=yes
2963   elif test "${HAVE_W32}" = "yes"; then
2964     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2965     USE_TOOLKIT_SCROLL_BARS=yes
2966   fi
2967 fi
2968
2969 dnl See if XIM is available.
2970 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2971           #include <X11/Xlib.h>
2972           #include <X11/Xresource.h>]],
2973          [[XIMProc  callback;]])],
2974          [HAVE_XIM=yes
2975          AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
2976          HAVE_XIM=no)
2977
2978 dnl '--with-xim' now controls only the initial value of use_xim at run time.
2979
2980 if test "${with_xim}" != "no"; then
2981   AC_DEFINE(USE_XIM, 1,
2982             [Define to 1 if we should use XIM, if it is available.])
2983 fi
2984
2985
2986 if test "${HAVE_XIM}" != "no"; then
2987   late_CFLAGS=$CFLAGS
2988   if test "$GCC" = yes; then
2989     CFLAGS="$CFLAGS --pedantic-errors"
2990   fi
2991   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2992 #include <X11/Xlib.h>
2993 #include <X11/Xresource.h>]],
2994 [[Display *display;
2995 XrmDatabase db;
2996 char *res_name;
2997 char *res_class;
2998 XIMProc  callback;
2999 XPointer *client_data;
3000 #ifndef __GNUC__
3001 /* If we're not using GCC, it's probably not XFree86, and this is
3002    probably right, but we can't use something like --pedantic-errors.  */
3003 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3004                                            char*, XIMProc, XPointer*);
3005 #endif
3006 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3007    client_data);]])],
3008     [emacs_cv_arg6_star=yes])
3009   AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3010          [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3011 either XPointer or XPointer*.])dnl
3012   if test "$emacs_cv_arg6_star" = yes; then
3013     AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3014   else
3015     AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3016   fi
3017   CFLAGS=$late_CFLAGS
3018 fi
3019
3020 ### Start of font-backend (under any platform) section.
3021 # (nothing here yet -- this is a placeholder)
3022 ### End of font-backend (under any platform) section.
3023
3024 ### Start of font-backend (under X11) section.
3025 if test "${HAVE_X11}" = "yes"; then
3026     ## Use -lXft if available, unless '--with-xft=no'.
3027     HAVE_XFT=maybe
3028     if test "x${with_x}" = "xno"; then
3029       with_xft="no";
3030     fi
3031
3032     if test "$with_xft" != no; then
3033       EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3034       with_xft=$HAVE_FONTCONFIG
3035     fi
3036
3037     if test "x${with_xft}" != "xno"; then
3038
3039       EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3040       ## Because xftfont.c uses XRenderQueryExtension, we also
3041       ## need to link to -lXrender.
3042       HAVE_XRENDER=no
3043       AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3044       if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3045         OLD_CPPFLAGS="$CPPFLAGS"
3046         OLD_CFLAGS="$CFLAGS"
3047         OLD_LIBS="$LIBS"
3048         CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3049         CFLAGS="$CFLAGS $XFT_CFLAGS"
3050         XFT_LIBS="-lXrender $XFT_LIBS"
3051         LIBS="$XFT_LIBS $LIBS"
3052         AC_CHECK_HEADER(X11/Xft/Xft.h,
3053           AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3054           [[#include <X11/X.h>]])
3055
3056         if test "${HAVE_XFT}" = "yes"; then
3057           AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3058             AC_SUBST(XFT_LIBS)
3059           C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3060         fi                        # "${HAVE_XFT}" = "yes"
3061         CPPFLAGS=$OLD_CPPFLAGS
3062         CFLAGS=$OLD_CFLAGS
3063         LIBS=$OLD_LIBS
3064       fi                          # "$HAVE_XFT" != no
3065     fi                            # "x${with_xft}" != "xno"
3066
3067     ## We used to allow building with FreeType and without Xft.
3068     ## However, the ftx font backend driver is not in good shape.
3069     if test "$HAVE_XFT" != "yes"; then
3070        dnl For the "Does Emacs use" message at the end.
3071        HAVE_XFT=no
3072        HAVE_FREETYPE=no
3073     else
3074        dnl Strict linkers fail with
3075        dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3076        dnl if -lfreetype is not specified.
3077        dnl The following is needed to set FREETYPE_LIBS.
3078        EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3079
3080        test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3081     fi
3082
3083     HAVE_LIBOTF=no
3084     if test "${HAVE_FREETYPE}" = "yes"; then
3085       AC_DEFINE(HAVE_FREETYPE, 1,
3086                 [Define to 1 if using the freetype and fontconfig libraries.])
3087       if test "${with_libotf}" != "no"; then
3088         EMACS_CHECK_MODULES([LIBOTF], [libotf])
3089         if test "$HAVE_LIBOTF" = "yes"; then
3090           AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3091           AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3092                        HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3093                        HAVE_OTF_GET_VARIATION_GLYPHS=no)
3094           if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3095             AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3096                       [Define to 1 if libotf has OTF_get_variation_glyphs.])
3097           fi
3098         fi
3099       fi
3100     dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3101     dnl Does the new font backend require it, or can it work without it?
3102     fi
3103
3104     HAVE_M17N_FLT=no
3105     if test "${HAVE_LIBOTF}" = yes; then
3106       if test "${with_m17n_flt}" != "no"; then
3107         EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3108         if test "$HAVE_M17N_FLT" = "yes"; then
3109           AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3110         fi
3111       fi
3112     fi
3113 else
3114     HAVE_XFT=no
3115     HAVE_FREETYPE=no
3116     HAVE_LIBOTF=no
3117     HAVE_M17N_FLT=no
3118 fi
3119
3120 ### End of font-backend (under X11) section.
3121
3122 AC_SUBST(FREETYPE_CFLAGS)
3123 AC_SUBST(FREETYPE_LIBS)
3124 AC_SUBST(FONTCONFIG_CFLAGS)
3125 AC_SUBST(FONTCONFIG_LIBS)
3126 AC_SUBST(LIBOTF_CFLAGS)
3127 AC_SUBST(LIBOTF_LIBS)
3128 AC_SUBST(M17N_FLT_CFLAGS)
3129 AC_SUBST(M17N_FLT_LIBS)
3130
3131 USE_CAIRO=no
3132 if test "${HAVE_X11}" = "yes"; then
3133   if test "${with_cairo}" != "no"; then
3134     CAIRO_REQUIRED=1.12.0
3135     CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3136     EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE, USE_CAIRO=yes, :)
3137     if test $USE_CAIRO = yes; then
3138       AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3139     else
3140       AC_MSG_ERROR([cairo requested but not found.])
3141     fi
3142
3143     CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3144     LIBS="$LIBS $CAIRO_LIBS"
3145     AC_SUBST(CAIRO_CFLAGS)
3146     AC_SUBST(CAIRO_LIBS)
3147   fi
3148 fi
3149
3150 if test "${HAVE_X11}" = "yes"; then
3151   AC_CHECK_HEADER(X11/Xlib-xcb.h,
3152     AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3153   if test "${HAVE_XCB}" = "yes"; then
3154     AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3155     if test "${HAVE_X11_XCB}" = "yes"; then
3156       AC_DEFINE(USE_XCB, 1,
3157 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3158    X11/XCB programming.])
3159       XCB_LIBS="-lX11-xcb -lxcb"
3160       AC_SUBST(XCB_LIBS)
3161     fi
3162   fi
3163 fi
3164
3165 ### Use -lXpm if available, unless '--with-xpm=no'.
3166 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3167 ### In the Cygwin-w32 build, we need to use /usr/include/noX/X11/xpm.h
3168 ### rather than /usr/include/X11/xpm.h, so we set CPPFLAGS (and
3169 ### LDFLAGS) accordingly.
3170 HAVE_XPM=no
3171 LIBXPM=
3172 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3173   if test "${with_xpm}" != "no"; then
3174     SAVE_CPPFLAGS="$CPPFLAGS"
3175     SAVE_LDFLAGS="$LDFLAGS"
3176     CPPFLAGS="$CPPFLAGS -I/usr/include/noX"
3177     LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3178     AC_CHECK_HEADER(X11/xpm.h,
3179       [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3180     if test "${HAVE_XPM}" = "yes"; then
3181       AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3182       AC_EGREP_CPP(no_return_alloc_pixels,
3183       [#include "X11/xpm.h"
3184 #ifndef XpmReturnAllocPixels
3185 no_return_alloc_pixels
3186 #endif
3187       ], HAVE_XPM=no, HAVE_XPM=yes)
3188
3189       if test "${HAVE_XPM}" = "yes"; then
3190         REAL_CPPFLAGS="$REAL_CPPFLAGS -I/usr/include/noX"
3191         AC_MSG_RESULT(yes)
3192       else
3193         AC_MSG_RESULT(no)
3194         CPPFLAGS="$SAVE_CPPFLAGS"
3195         LDFLAGS="$SAVE_LDFLAGS"
3196       fi
3197     fi
3198   fi
3199
3200   if test "${HAVE_XPM}" = "yes"; then
3201     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3202     LIBXPM=-lXpm
3203   fi
3204 fi
3205
3206 if test "${HAVE_X11}" = "yes"; then
3207   dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3208   test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3209
3210   if test "${with_xpm}" != "no"; then
3211     AC_CHECK_HEADER(X11/xpm.h,
3212       [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3213     if test "${HAVE_XPM}" = "yes"; then
3214       AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3215       AC_EGREP_CPP(no_return_alloc_pixels,
3216       [#include "X11/xpm.h"
3217 #ifndef XpmReturnAllocPixels
3218 no_return_alloc_pixels
3219 #endif
3220       ], HAVE_XPM=no, HAVE_XPM=yes)
3221
3222       if test "${HAVE_XPM}" = "yes"; then
3223         AC_MSG_RESULT(yes)
3224       else
3225         AC_MSG_RESULT(no)
3226       fi
3227     fi
3228   fi
3229
3230   if test "${HAVE_XPM}" = "yes"; then
3231     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3232     LIBXPM=-lXpm
3233   elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3234     dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3235     LIBXPM=-lXpm
3236   fi
3237 fi
3238
3239 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3240 ### slightly different requirements wrt image libraries (it doesn't
3241 ### use -lXpm because it loads the xpm shared library dynamically at
3242 ### run time).
3243 if test "${opsys}" = "mingw32"; then
3244   if test "${with_xpm}" != "no"; then
3245     AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3246 #define FOR_MSW 1])
3247   fi
3248
3249   if test "${HAVE_XPM}" = "yes"; then
3250     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3251   fi
3252 fi
3253
3254 AC_SUBST(LIBXPM)
3255
3256 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3257 HAVE_JPEG=no
3258 LIBJPEG=
3259 if test "${with_jpeg}" != "no"; then
3260   AC_CACHE_CHECK([for jpeglib 6b or later],
3261     [emacs_cv_jpeglib],
3262     [OLD_LIBS=$LIBS
3263      for emacs_cv_jpeglib in yes -ljpeg no; do
3264        case $emacs_cv_jpeglib in
3265          yes) ;;
3266          no) break;;
3267          *) LIBS="$LIBS $emacs_cv_jpeglib";;
3268        esac
3269        AC_LINK_IFELSE(
3270          [AC_LANG_PROGRAM(
3271             [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision.  */
3272               #include <stdio.h> /* jpeglib.h needs FILE and size_t.  */
3273               #include <jpeglib.h>
3274               #include <jerror.h>
3275               char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3276               struct jpeg_decompress_struct cinfo;
3277             ]],
3278             [[
3279               jpeg_create_decompress (&cinfo);
3280               WARNMS (&cinfo, JWRN_JPEG_EOF);
3281               jpeg_destroy_decompress (&cinfo);
3282             ]])],
3283          [emacs_link_ok=yes],
3284          [emacs_link_ok=no])
3285        LIBS=$OLD_LIBS
3286        test $emacs_link_ok = yes && break
3287      done])
3288   if test "$emacs_cv_jpeglib" != no; then
3289     HAVE_JPEG=yes
3290     AC_DEFINE([HAVE_JPEG], 1,
3291       [Define to 1 if you have the jpeg library (typically -ljpeg).])
3292     ### mingw32 doesn't use -ljpeg, since it loads the library
3293     ### dynamically when needed, and doesn't want a run-time
3294     ### dependency on the jpeglib DLL.
3295     test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3296     && LIBJPEG=$emacs_cv_jpeglib
3297   fi
3298 fi
3299 AC_SUBST(LIBJPEG)
3300
3301 HAVE_ZLIB=no
3302 LIBZ=
3303 if test "${with_zlib}" != "no"; then
3304   OLIBS=$LIBS
3305   AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3306   LIBS=$OLIBS
3307   case $ac_cv_search_inflateEnd in
3308     -*) LIBZ=$ac_cv_search_inflateEnd ;;
3309   esac
3310 fi
3311 if test "${HAVE_ZLIB}" = "yes"; then
3312   AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3313   ### mingw32 doesn't use -lz, since it loads the library dynamically.
3314   if test "${opsys}" = "mingw32"; then
3315      LIBZ=
3316   fi
3317 fi
3318 AC_SUBST(LIBZ)
3319
3320 ### Dynamic modules support
3321 LIBMODULES=
3322 HAVE_MODULES=no
3323 MODULES_OBJ=
3324 MODULES_SUFFIX=
3325 if test "${with_modules}" != "no"; then
3326   if test "$opsys" = "gnu-linux"; then
3327     LIBMODULES="-ldl"
3328     MODULES_SUFFIX=".so"
3329     HAVE_MODULES=yes
3330   elif test "$opsys" = "cygwin"; then
3331     MODULES_SUFFIX=".dll"
3332     HAVE_MODULES=yes
3333   elif test "$opsys" = "darwin"; then
3334     MODULES_SUFFIX=".so"
3335     HAVE_MODULES=yes
3336   elif test "$opsys" = "mingw32"; then
3337     MODULES_SUFFIX=".dll"
3338     HAVE_MODULES=yes
3339   else
3340     # BSD system have dlopen in the libc
3341     AC_CHECK_FUNC(dlopen, [MODULES_SUFFIX=".so"]
3342                           [HAVE_MODULES=yes], [])
3343   fi
3344
3345   if test "${HAVE_MODULES}" = no; then
3346     AC_MSG_ERROR([Dynamic modules are not supported on your system])
3347   else
3348     SAVE_LIBS=$LIBS
3349     LIBS="$LIBS $LIBMODULES"
3350     AC_CHECK_FUNCS([dlfunc])
3351     LIBS=$SAVE_LIBS
3352   fi
3353 fi
3354
3355 if test "${HAVE_MODULES}" = yes; then
3356    MODULES_OBJ="dynlib.o emacs-module.o"
3357    AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3358    AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3359      [System extension for dynamic libraries])
3360 fi
3361 AC_SUBST(MODULES_OBJ)
3362 AC_SUBST(LIBMODULES)
3363 AC_CHECK_FUNCS(dladdr)
3364
3365 ### Use -lpng if available, unless '--with-png=no'.
3366 HAVE_PNG=no
3367 LIBPNG=
3368 PNG_CFLAGS=
3369 if test "${NS_IMPL_COCOA}" = yes; then
3370   : # Nothing to do
3371 elif test "${with_png}" != no; then
3372   # mingw32 loads the library dynamically.
3373   if test "$opsys" = mingw32; then
3374     AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3375   elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3376     AC_MSG_CHECKING([for png])
3377     png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3378     png_libs=`(libpng-config --libs) 2>&AS_MESSAGE_LOG_FD` || {
3379       # libpng-config does not work; configure by hand.
3380       # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3381       # in /usr/include/libpng.
3382       if test -r /usr/include/libpng/png.h &&
3383          test ! -r /usr/include/png.h; then
3384         png_cflags=-I/usr/include/libpng
3385       else
3386         png_cflags=
3387       fi
3388       png_libs='-lpng'
3389     }
3390     SAVE_CFLAGS=$CFLAGS
3391     SAVE_LIBS=$LIBS
3392     CFLAGS="$CFLAGS $png_cflags"
3393     LIBS="$png_libs -lz -lm $LIBS"
3394     AC_LINK_IFELSE(
3395       [AC_LANG_PROGRAM([[#include <png.h>]],
3396          [[return !png_get_channels (0, 0);]])],
3397       [HAVE_PNG=yes
3398        PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3399        LIBPNG=$png_libs
3400        # $LIBPNG requires explicit -lz in some cases.
3401        # We don't know what those cases are, exactly, so play it safe and
3402        # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3403        if test -n "$LIBPNG" && test -z "$LIBZ"; then
3404          LIBPNG="$LIBPNG -lz"
3405        fi])
3406     CFLAGS=$SAVE_CFLAGS
3407     LIBS=$SAVE_LIBS
3408     AC_MSG_RESULT([$HAVE_PNG])
3409   fi
3410 fi
3411 if test $HAVE_PNG = yes; then
3412   AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3413
3414   SAVE_CFLAGS=$CFLAGS
3415   CFLAGS="$CFLAGS $PNG_CFLAGS"
3416   AC_CHECK_DECL([png_longjmp],
3417     [],
3418     [AC_DEFINE([PNG_DEPSTRUCT], [],
3419        [Define to empty to suppress deprecation warnings when building
3420         with --enable-gcc-warnings and with libpng versions before 1.5,
3421         which lack png_longjmp.])],
3422     [[#include <png.h>
3423     ]])
3424   CFLAGS=$SAVE_CFLAGS
3425 fi
3426 AC_SUBST(LIBPNG)
3427 AC_SUBST(PNG_CFLAGS)
3428
3429 ### Use -ltiff if available, unless '--with-tiff=no'.
3430 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3431 HAVE_TIFF=no
3432 LIBTIFF=
3433 if test "${opsys}" = "mingw32"; then
3434   if test "${with_tiff}" != "no"; then
3435     AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3436   fi
3437   if test "${HAVE_TIFF}" = "yes"; then
3438     AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3439   fi
3440 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3441   if test "${with_tiff}" != "no"; then
3442     AC_CHECK_HEADER(tiffio.h,
3443       [tifflibs="-lz -lm"
3444       # At least one tiff package requires the jpeg library.
3445       if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3446       AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3447   fi
3448
3449   if test "${HAVE_TIFF}" = "yes"; then
3450     AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3451     dnl FIXME -lz -lm, as per libpng?
3452     LIBTIFF=-ltiff
3453   fi
3454 fi
3455 AC_SUBST(LIBTIFF)
3456
3457 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3458 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3459 HAVE_GIF=no
3460 LIBGIF=
3461 if test "${opsys}" = "mingw32"; then
3462   if test "${with_gif}" != "no"; then
3463     AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3464   fi
3465   if test "${HAVE_GIF}" = "yes"; then
3466     AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3467   fi
3468 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3469         || test "${HAVE_W32}" = "yes"; then
3470   AC_CHECK_HEADER(gif_lib.h,
3471 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3472 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3473     [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3474         [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3475
3476   if test "$HAVE_GIF" = yes; then
3477     LIBGIF=-lgif
3478   elif test "$HAVE_GIF" = maybe; then
3479 # If gif_lib.h but no libgif, try libungif.
3480     AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3481     test "$HAVE_GIF" = yes && LIBGIF=-lungif
3482   fi
3483
3484   if test "${HAVE_GIF}" = "yes"; then
3485     AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3486   fi
3487 fi
3488 AC_SUBST(LIBGIF)
3489
3490 dnl Check for required libraries.
3491 if test "${HAVE_X11}" = "yes"; then
3492   MISSING=""
3493   WITH_NO=""
3494   test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3495     MISSING="libXpm" && WITH_NO="--with-xpm=no"
3496   test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3497     MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3498   test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3499     MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3500   test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3501     MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3502   test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3503     MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3504
3505   if test "X${MISSING}" != X; then
3506     AC_MSG_ERROR([The following required libraries were not found:
3507     $MISSING
3508 Maybe some development libraries/packages are missing?
3509 If you don't want to link with them give
3510     $WITH_NO
3511 as options to configure])
3512   fi
3513 fi
3514
3515 ### Use -lgpm if available, unless '--with-gpm=no'.
3516 HAVE_GPM=no
3517 LIBGPM=
3518 if test "${with_gpm}" != "no"; then
3519   AC_CHECK_HEADER(gpm.h,
3520     [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3521
3522   if test "${HAVE_GPM}" = "yes"; then
3523     AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3524     LIBGPM=-lgpm
3525   fi
3526 fi
3527 AC_SUBST(LIBGPM)
3528
3529 dnl Check for malloc/malloc.h on darwin
3530 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3531
3532 GNUSTEP_CFLAGS=
3533 ### Use NeXTstep API to implement GUI.
3534 if test "${HAVE_NS}" = "yes"; then
3535   AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on Mac OS X.])
3536   if test "${NS_IMPL_COCOA}" = "yes"; then
3537     AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under MacOS X.])
3538   fi
3539   if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3540     AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3541     if test $NS_GNUSTEP_CONFIG != yes; then
3542       # See also .m.o rule in src/Makefile.in.  */
3543       # FIXME: are all these flags really needed?  Document here why.  */
3544       GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3545       ## Extra CFLAGS applied to src/*.m files.
3546       GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3547     fi
3548   fi
3549   OTHER_FILES=ns-app
3550 fi
3551
3552 ### Use session management (-lSM -lICE) if available
3553 HAVE_X_SM=no
3554 LIBXSM=
3555 if test "${HAVE_X11}" = "yes"; then
3556   AC_CHECK_HEADER(X11/SM/SMlib.h,
3557     [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3558
3559   if test "${HAVE_X_SM}" = "yes"; then
3560     AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3561     LIBXSM="-lSM -lICE"
3562   fi
3563 fi
3564 AC_SUBST(LIBXSM)
3565
3566 ### Use XRandr (-lXrandr) if available
3567 HAVE_XRANDR=no
3568 if test "${HAVE_X11}" = "yes"; then
3569   XRANDR_REQUIRED=1.2.2
3570   XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3571   EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3572   if test $HAVE_XRANDR = no; then
3573     # Test old way in case pkg-config doesn't have it (older machines).
3574     # Include Xrender.h by hand to work around bug in older Xrandr.h
3575     # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3576     AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3577       [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3578       [], [AC_INCLUDES_DEFAULT
3579 #include <X11/extensions/Xrender.h>])
3580     if test $HAVE_XRANDR = yes; then
3581       XRANDR_LIBS=-lXrandr
3582     fi
3583   fi
3584   if test $HAVE_XRANDR = yes; then
3585     SAVE_CFLAGS="$CFLAGS"
3586     SAVE_LIBS="$LIBS"
3587     CFLAGS="$XRANDR_CFLAGS $CFLAGS"
3588     LIBS="$XRANDR_LIBS $LIBS"
3589     AC_CHECK_FUNCS(XRRGetOutputPrimary XRRGetScreenResourcesCurrent)
3590     CFLAGS="$SAVE_CFLAGS"
3591     LIBS="$SAVE_LIBS"
3592
3593     AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3594   fi
3595 fi
3596 AC_SUBST(XRANDR_CFLAGS)
3597 AC_SUBST(XRANDR_LIBS)
3598
3599 ### Use Xinerama (-lXinerama) if available
3600 HAVE_XINERAMA=no
3601 if test "${HAVE_X11}" = "yes"; then
3602   XINERAMA_REQUIRED=1.0.2
3603   XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3604   EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3605   if test $HAVE_XINERAMA = no; then
3606     # Test old way in case pkg-config doesn't have it (older machines).
3607     AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3608       [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3609     if test $HAVE_XINERAMA = yes; then
3610       XINERAMA_LIBS=-lXinerama
3611     fi
3612   fi
3613   if test $HAVE_XINERAMA = yes; then
3614     AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3615   fi
3616 fi
3617 AC_SUBST(XINERAMA_CFLAGS)
3618 AC_SUBST(XINERAMA_LIBS)
3619
3620 ### Use Xfixes (-lXfixes) if available
3621 HAVE_XFIXES=no
3622 if test "${HAVE_X11}" = "yes"; then
3623   XFIXES_REQUIRED=4.0.0
3624   XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3625   EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3626   if test $HAVE_XFIXES = no; then
3627     # Test old way in case pkg-config doesn't have it (older machines).
3628     AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3629       [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3630     if test $HAVE_XFIXES = yes; then
3631       XFIXES_LIBS=-lXfixes
3632     fi
3633   fi
3634   if test $HAVE_XFIXES = yes; then
3635     AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3636   fi
3637 fi
3638 AC_SUBST(XFIXES_CFLAGS)
3639 AC_SUBST(XFIXES_LIBS)
3640
3641 ### Use libxml (-lxml2) if available
3642 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3643 HAVE_LIBXML2=no
3644 if test "${with_xml2}" != "no"; then
3645   ### I'm not sure what the version number should be, so I just guessed.
3646   EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3647   # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3648   if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3649     SAVE_CPPFLAGS="$CPPFLAGS"
3650     if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3651       dnl /usr/include is not found.  Try Xcode SDK dir if it is sane.
3652       xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3653       case $xcsdkdir in
3654         *[[\\\"\#\$\&\'\`$am_lf\ \      ]]*)
3655         xcsdkdir="" ;;
3656       esac
3657     fi
3658     CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
3659     AC_CHECK_HEADER(libxml/HTMLparser.h,
3660       [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3661                      [#include <libxml/HTMLparser.h>])])
3662     CPPFLAGS="$SAVE_CPPFLAGS"
3663     if test "${HAVE_LIBXML2}" = "yes"; then
3664       LIBXML2_CFLAGS="-I'$xcsdkdir/usr/include/libxml2'"
3665       LIBXML2_LIBS="-lxml2"
3666     fi
3667   fi
3668   if test "${HAVE_LIBXML2}" = "yes"; then
3669     if test "${opsys}" != "mingw32"; then
3670       AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3671         [$LIBXML2_LIBS])
3672     else
3673       LIBXML2_LIBS=""
3674     fi
3675     if test "${HAVE_LIBXML2}" = "yes"; then
3676       AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3677     else
3678       LIBXML2_LIBS=""
3679       LIBXML2_CFLAGS=""
3680     fi
3681   fi
3682 fi
3683 AC_SUBST(LIBXML2_LIBS)
3684 AC_SUBST(LIBXML2_CFLAGS)
3685
3686 # If netdb.h doesn't declare h_errno, we must declare it by hand.
3687 # On MinGW, that is provided by nt/inc/sys/socket.h and w32.c.
3688 if test "${opsys}" = "mingw32"; then
3689   emacs_cv_netdb_declares_h_errno=yes
3690 fi
3691 AC_CACHE_CHECK(whether netdb declares h_errno,
3692                emacs_cv_netdb_declares_h_errno,
3693 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
3694   [[return h_errno;]])],
3695   emacs_cv_netdb_declares_h_errno=yes, emacs_cv_netdb_declares_h_errno=no)])
3696 if test $emacs_cv_netdb_declares_h_errno = yes; then
3697   AC_DEFINE(HAVE_H_ERRNO, 1, [Define to 1 if netdb.h declares h_errno.])
3698 fi
3699
3700 # Check for mail-locking functions in a "mail" library.  Probably this should
3701 # have the same check as for liblockfile below.
3702 AC_CHECK_LIB(mail, maillock, have_mail=yes, have_mail=no)
3703 if test $have_mail = yes; then
3704   LIBS_MAIL=-lmail
3705   AC_DEFINE(HAVE_LIBMAIL, 1, [Define to 1 if you have the 'mail' library (-lmail).])
3706
3707   OLD_LIBS=$LIBS
3708   LIBS="$LIBS_MAIL $LIBS"
3709   AC_CHECK_FUNCS(touchlock)
3710   LIBS=$OLD_LIBS
3711 else
3712   LIBS_MAIL=
3713 fi
3714 dnl Debian, at least:
3715 AC_CHECK_LIB(lockfile, maillock, have_lockfile=yes, have_lockfile=no)
3716 if test $have_lockfile = yes; then
3717    LIBS_MAIL=-llockfile
3718    AC_DEFINE(HAVE_LIBLOCKFILE, 1, [Define to 1 if you have the 'lockfile' library (-llockfile).])
3719 else
3720 # If we have the shared liblockfile, assume we must use it for mail
3721 # locking (e.g. Debian).  If we couldn't link against liblockfile
3722 # (no liblockfile.a installed), ensure that we don't need to.
3723   dnl This works for files generally, not just executables.
3724   dnl Should we look elsewhere for it?  Maybe examine /etc/ld.so.conf?
3725   AC_CHECK_PROG(liblockfile, liblockfile.so, yes, no,
3726                 /usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH)
3727   if test $ac_cv_prog_liblockfile = yes; then
3728     AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3729 This probably means that movemail could lose mail.
3730 There may be a 'development' package to install containing liblockfile.])
3731   fi
3732 fi
3733 AC_CHECK_HEADERS_ONCE(maillock.h)
3734 AC_SUBST(LIBS_MAIL)
3735
3736 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3737 ## interlock access to the mail spool.  The alternative is a lock file named
3738 ## /usr/spool/mail/$USER.lock.
3739 mail_lock=no
3740 case "$opsys" in
3741   aix4-2) mail_lock="lockf" ;;
3742
3743   gnu|freebsd|dragonfly|netbsd|openbsd|darwin|irix6-5) mail_lock="flock" ;;
3744
3745   ## On GNU/Linux systems, both methods are used by various mail programs.
3746   ## I assume most people are using newer mailers that have heard of flock.
3747   ## Change this if you need to.
3748   ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3749   ## configure gets the right answers, and that means *NOT* using flock.
3750   ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3751   ## for details." and then uses '#ifdef DEBIAN'.  Unfortunately the
3752   ## Debian maintainer hasn't provided a clean fix for Emacs.
3753   ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3754   ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3755   ## correct logic.  -- fx
3756   ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3757   ## liblockfile is a Free Software replacement for libmail, used on
3758   ## Debian systems and elsewhere. -rfr.
3759   gnu-*)
3760     mail_lock="flock"
3761     if test $have_mail = yes || test $have_lockfile = yes; then
3762       test $ac_cv_header_maillock_h = yes && mail_lock=no
3763     fi
3764     ;;
3765
3766   mingw32)
3767     mail_lock="none-needed" ;;
3768 esac
3769
3770 BLESSMAIL_TARGET=
3771 case "$mail_lock" in
3772   flock) AC_DEFINE(MAIL_USE_FLOCK, 1, [Define if the mailer uses flock to interlock the mail spool.]) ;;
3773
3774   lockf) AC_DEFINE(MAIL_USE_LOCKF, 1, [Define if the mailer uses lockf to interlock the mail spool.]) ;;
3775
3776   none-needed) ;;
3777
3778   *) BLESSMAIL_TARGET="need-blessmail" ;;
3779 esac
3780 AC_SUBST(BLESSMAIL_TARGET)
3781
3782 OLD_LIBS=$LIBS
3783 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
3784 AC_CHECK_FUNCS(accept4 fchdir gethostname \
3785 getrusage get_current_dir_name \
3786 lrand48 random rint \
3787 select getpagesize setlocale newlocale \
3788 getrlimit setrlimit shutdown getaddrinfo \
3789 pthread_sigmask strsignal setitimer \
3790 sendto recvfrom getsockname getpeername getifaddrs freeifaddrs \
3791 gai_strerror sync \
3792 getpwent endpwent getgrent endgrent \
3793 cfmakeraw cfsetspeed copysign __executable_start log2)
3794 LIBS=$OLD_LIBS
3795
3796 dnl No need to check for aligned_alloc and posix_memalign if using
3797 dnl gmalloc.o, as it supplies them, unless we're using hybrid_malloc.
3798 dnl Don't use these functions on Darwin as they are incompatible with
3799 dnl unexmacosx.c.
3800 if (test -z "$GMALLOC_OBJ" || test "$hybrid_malloc" = yes) \
3801   && test "$opsys" != darwin; then
3802   AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
3803 fi
3804
3805 dnl Cannot use AC_CHECK_FUNCS
3806 AC_CACHE_CHECK([for __builtin_unwind_init],
3807                emacs_cv_func___builtin_unwind_init,
3808 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
3809                 emacs_cv_func___builtin_unwind_init=yes,
3810                 emacs_cv_func___builtin_unwind_init=no)])
3811 if test $emacs_cv_func___builtin_unwind_init = yes; then
3812   AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
3813             [Define to 1 if you have the '__builtin_unwind_init' function.])
3814 fi
3815
3816 AC_CHECK_HEADERS_ONCE(sys/un.h)
3817
3818 AC_FUNC_FSEEKO
3819
3820 # UNIX98 PTYs.
3821 AC_CHECK_FUNCS(grantpt)
3822
3823 # PTY-related GNU extensions.
3824 AC_CHECK_FUNCS(getpt posix_openpt)
3825
3826 # Check this now, so that we will NOT find the above functions in ncurses.
3827 # That is because we have not set up to link ncurses in lib-src.
3828 # It's better to believe a function is not available
3829 # than to expect to find it in ncurses.
3830 # Also we need tputs and friends to be able to build at all.
3831 AC_MSG_CHECKING([for library containing tputs])
3832 # Run a test program that contains a call to tputs, a call that is
3833 # never executed.  This tests whether a pre-'main' dynamic linker
3834 # works with the library.  It's too much trouble to actually call
3835 # tputs in the test program, due to portability hassles.  When
3836 # cross-compiling, assume the test program will run if it links.
3837 AC_DEFUN([tputs_link_source], [
3838   AC_LANG_SOURCE(
3839      [[extern void tputs (const char *, int, int (*)(int));
3840        int main (int argc, char **argv)
3841        {
3842           if (argc == 10000)
3843             tputs (argv[0], 0, 0);
3844           return 0;
3845        }]])
3846 ])
3847 if test "${opsys}" = "mingw32"; then
3848   msg='none required'
3849 else
3850   # Maybe curses should be tried earlier?
3851   # See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
3852   for tputs_library in '' tinfo ncurses terminfo termcap curses; do
3853     OLIBS=$LIBS
3854     if test -z "$tputs_library"; then
3855       LIBS_TERMCAP=
3856       msg='none required'
3857     else
3858       LIBS_TERMCAP=-l$tputs_library
3859       msg=$LIBS_TERMCAP
3860       LIBS="$LIBS_TERMCAP $LIBS"
3861     fi
3862     AC_RUN_IFELSE([tputs_link_source], [], [msg=no],
3863       [AC_LINK_IFELSE([tputs_link_source], [], [msg=no])])
3864     LIBS=$OLIBS
3865     if test "X$msg" != Xno; then
3866       break
3867     fi
3868   done
3869 fi
3870 AC_MSG_RESULT([$msg])
3871 if test "X$msg" = Xno; then
3872   AC_MSG_ERROR([The required function 'tputs' was not found in any library.
3873 The following libraries were tried (in order):
3874   libtinfo, libncurses, libterminfo, libtermcap, libcurses
3875 Please try installing whichever of these libraries is most appropriate
3876 for your system, together with its header files.
3877 For example, a libncurses-dev(el) or similar package.])
3878 fi
3879
3880 ## Use termcap instead of terminfo?
3881 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
3882 TERMINFO=yes
3883 ## FIXME?  In the cases below where we unconditionally set
3884 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
3885 ## if that was found above to have tputs.
3886 ## Should we use the gnu* logic everywhere?
3887 case "$opsys" in
3888   ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
3889   ##  The ncurses library has been moved out of the System framework in
3890   ##  Mac OS X 10.2.  So if configure detects it, set the command-line
3891   ##  option to use it.
3892   darwin) LIBS_TERMCAP="-lncurses" ;;
3893
3894   gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
3895
3896   freebsd)
3897     AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
3898     AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
3899     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
3900 [[#if __FreeBSD_version < 400000
3901 fail;
3902 #endif
3903 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
3904
3905     AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
3906
3907     if test $emacs_cv_freebsd_terminfo = yes; then
3908       LIBS_TERMCAP="-lncurses"
3909     else
3910       TERMINFO=no
3911       LIBS_TERMCAP="-ltermcap"
3912     fi
3913     ;;
3914
3915   mingw32)
3916     TERMINFO=no
3917     LIBS_TERMCAP=
3918     ;;
3919
3920   netbsd)
3921     if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
3922       TERMINFO=no
3923       LIBS_TERMCAP="-ltermcap"
3924     fi
3925     ;;
3926
3927   openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
3928
3929   ## hpux: Make sure we get select from libc rather than from libcurses
3930   ##  because libcurses on HPUX 10.10 has a broken version of select.
3931   ##  We used to use -lc -lcurses, but this may be cleaner.
3932   ## FIXME?  But TERMINFO = yes on hpux (it used to be explicitly
3933   # set that way, now it uses the default).  Isn't this a contradiction?
3934   hpux*) LIBS_TERMCAP="-ltermcap" ;;
3935
3936 esac
3937
3938 TERMCAP_OBJ=tparam.o
3939 if test $TERMINFO = yes; then
3940   AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
3941   TERMCAP_OBJ=terminfo.o
3942 fi
3943 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
3944   AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
3945 fi
3946 AC_SUBST(LIBS_TERMCAP)
3947 AC_SUBST(TERMCAP_OBJ)
3948
3949 # GNU/Linux-specific timer functions.
3950 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
3951   [AC_COMPILE_IFELSE(
3952      [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
3953                       ]],
3954                       [[timerfd_create (CLOCK_REALTIME,
3955                                         TFD_CLOEXEC | TFD_NONBLOCK);
3956                         timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
3957      [emacs_cv_have_timerfd=yes],
3958      [emacs_cv_have_timerfd=no])])
3959 if test "$emacs_cv_have_timerfd" = yes; then
3960   AC_DEFINE([HAVE_TIMERFD], 1,
3961     [Define to 1 if timerfd functions are supported as in GNU/Linux.])
3962 fi
3963
3964 # Alternate stack for signal handlers.
3965 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
3966                [emacs_cv_alternate_stack],
3967   [AC_COMPILE_IFELSE(
3968      [AC_LANG_PROGRAM([[#include <signal.h>
3969                       ]],
3970                       [[stack_t ss;
3971                         struct sigaction sa;
3972                         ss.ss_sp = malloc (SIGSTKSZ);
3973                         ss.ss_size = SIGSTKSZ;
3974                         sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
3975                         sigaltstack (&ss, 0);
3976                         sigaction (SIGSEGV, &sa, 0);]])],
3977      [emacs_cv_alternate_stack=yes],
3978      [emacs_cv_alternate_stack=no])])
3979
3980 # Do we have res_init, for detecting changes in /etc/resolv.conf?
3981 # On Darwin, res_init appears not to be useful: see bug#562 and
3982 # http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg01467.html
3983 resolv=no
3984
3985 if test $opsys != darwin; then
3986
3987   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
3988 #include <arpa/nameser.h>
3989 #include <resolv.h>]],
3990     [[return res_init();]])],
3991     have_res_init=yes, have_res_init=no)
3992   if test "$have_res_init" = no; then
3993     OLIBS="$LIBS"
3994     LIBS="$LIBS -lresolv"
3995     AC_MSG_CHECKING(for res_init with -lresolv)
3996     AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
3997 #include <arpa/nameser.h>
3998 #include <resolv.h>]],
3999       [[return res_init();]])],
4000       have_res_init=yes, have_res_init=no)
4001     AC_MSG_RESULT($have_res_init)
4002     if test "$have_res_init" = yes ; then
4003       resolv=yes
4004     fi
4005     LIBS="$OLIBS"
4006   fi
4007
4008   if test "$have_res_init" = yes; then
4009     AC_DEFINE(HAVE_RES_INIT, 1, [Define to 1 if res_init is available.])
4010   fi
4011 fi                              dnl !darwin
4012
4013 # Do we need the Hesiod library to provide the support routines?
4014 dnl FIXME?  Should we be skipping this on Darwin too?
4015 LIBHESIOD=
4016 if test "$with_hesiod" != no ; then
4017   # Don't set $LIBS here -- see comments above.  FIXME which comments?
4018   AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4019      [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4020                   [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4021   if test "$resolv" = yes ; then
4022     RESOLVLIB=-lresolv
4023   else
4024     RESOLVLIB=
4025   fi
4026   AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4027         hesiod=yes, :, $RESOLVLIB)])
4028
4029   if test x"$hesiod" = xyes; then
4030     LIBHESIOD=-lhesiod
4031   fi
4032 fi
4033 AC_SUBST(LIBHESIOD)
4034
4035 # Do we need libresolv (due to res_init or Hesiod)?
4036 if test "$resolv" = yes && test $opsys != darwin; then
4037   LIBRESOLV=-lresolv
4038 else
4039   LIBRESOLV=
4040 fi
4041 AC_SUBST(LIBRESOLV)
4042
4043 # These tell us which Kerberos-related libraries to use.
4044 COM_ERRLIB=
4045 CRYPTOLIB=
4046 KRB5LIB=
4047 DESLIB=
4048 KRB4LIB=
4049
4050 if test "${with_kerberos}" != no; then
4051   OLD_LIBS=$LIBS
4052   AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4053   if test $have_com_err = yes; then
4054     COM_ERRLIB=-lcom_err
4055     LIBS="$COM_ERRLIB $LIBS"
4056   fi
4057   AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4058   if test $have_crypto = yes; then
4059     CRYPTOLIB=-lcrypto
4060     LIBS="$CRYPTOLIB $LIBS"
4061   fi
4062   AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4063   if test $have_k5crypto = yes; then
4064     CRYPTOLIB=-lk5crypto
4065     LIBS="$CRYPTOLIB $LIBS"
4066   fi
4067   AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4068   if test $have_krb5=yes; then
4069     KRB5LIB=-lkrb5
4070     LIBS="$KRB5LIB $LIBS"
4071   fi
4072   dnl FIXME Simplify.  Does not match 22 logic, thanks to default_off?
4073   if test "${with_kerberos5}" = no; then
4074     AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4075     if test $have_des425 = yes; then
4076       DESLIB=-ldes425
4077       LIBS="$DESLIB $LIBS"
4078     else
4079       AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4080       if test $have_des = yes; then
4081         DESLIB=-ldes
4082         LIBS="$DESLIB $LIBS"
4083       fi
4084     fi
4085     AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4086     if test $have_krb4 = yes; then
4087       KRB4LIB=-lkrb4
4088       LIBS="$KRB4LIB $LIBS"
4089     else
4090       AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4091       if test $have_krb = yes; then
4092         KRB4LIB=-lkrb
4093         LIBS="$KRB4LIB $LIBS"
4094       fi
4095     fi
4096   fi
4097
4098   if test "${with_kerberos5}" != no; then
4099     AC_CHECK_HEADERS(krb5.h,
4100       [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4101                         [#include <krb5.h>])])
4102   else
4103     AC_CHECK_HEADERS(krb.h,,
4104                      [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4105                                        [AC_CHECK_HEADERS(kerberos/krb.h)])])
4106   fi
4107   AC_CHECK_HEADERS(com_err.h)
4108   LIBS=$OLD_LIBS
4109 fi
4110
4111 AC_SUBST(COM_ERRLIB)
4112 AC_SUBST(CRYPTOLIB)
4113 AC_SUBST(KRB5LIB)
4114 AC_SUBST(DESLIB)
4115 AC_SUBST(KRB4LIB)
4116
4117 AC_CHECK_HEADERS(valgrind/valgrind.h)
4118
4119 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4120
4121 AC_CHECK_FUNCS_ONCE(tzset)
4122
4123 ok_so_far=yes
4124 AC_CHECK_FUNC(socket, , ok_so_far=no)
4125 if test $ok_so_far = yes; then
4126   AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4127 fi
4128 if test $ok_so_far = yes; then
4129   AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4130 fi
4131 if test $ok_so_far = yes; then
4132 dnl Fixme: Not used.  Should this be HAVE_SOCKETS?
4133   AC_DEFINE(HAVE_INET_SOCKETS, 1,
4134             [Define to 1 if you have inet sockets.])
4135 fi
4136
4137 AC_FUNC_FORK
4138
4139 AC_CHECK_FUNCS(snprintf)
4140
4141 dnl Check for glib.  This differs from other library checks in that
4142 dnl Emacs need not link to glib unless some other library is already
4143 dnl linking to glib.  Although glib provides no facilities that Emacs
4144 dnl needs for its own purposes, when glib is present Emacs needs to
4145 dnl use primitives like g_main_context_query to avoid clashing with
4146 dnl glib at a low level.
4147 dnl
4148 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4149 XGSELOBJ=
4150 OLDCFLAGS="$CFLAGS"
4151 OLDLIBS="$LIBS"
4152 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4153 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4154 CFLAGS="$CFLAGS $GFILENOTIFY_CFLAGS $CAIRO_CFLAGS"
4155 LIBS="$LIBS $GFILENOTIFY_LIBS $CAIRO_LIBS"
4156 AC_MSG_CHECKING([whether GLib is linked in])
4157 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4158         [[#include <glib.h>
4159         ]],
4160         [[g_print ("Hello world");]])],
4161      [links_glib=yes],
4162      [links_glib=no])
4163 AC_MSG_RESULT([$links_glib])
4164 if test "${links_glib}" = "yes"; then
4165   AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4166   if test "$HAVE_NS" = no;then
4167     XGSELOBJ=xgselect.o
4168   fi
4169 fi
4170 CFLAGS="$OLDCFLAGS"
4171 LIBS="$OLDLIBS"
4172 AC_SUBST(XGSELOBJ)
4173
4174 dnl Adapted from Haible's version.
4175 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4176   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4177     [[char* cs = nl_langinfo(CODESET);]])],
4178     emacs_cv_langinfo_codeset=yes,
4179     emacs_cv_langinfo_codeset=no)
4180   ])
4181 if test $emacs_cv_langinfo_codeset = yes; then
4182   AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4183     [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4184 fi
4185
4186 AC_TYPE_MBSTATE_T
4187
4188 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4189 dnl how the tty code is related to POSIX and/or other versions of termios.
4190 dnl The following looks like a useful start.
4191 dnl
4192 dnl AC_SYS_POSIX_TERMIOS
4193 dnl if test $ac_cv_sys_posix_termios = yes; then
4194 dnl    AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4195 dnl                                and macros for terminal control.])
4196 dnl    AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4197 dnl fi
4198
4199 dnl Turned on June 1996 supposing nobody will mind it.
4200 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4201 if test "${opsys}" != "mingw32"; then
4202    AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4203      in the full name stands for the login id.])
4204 fi
4205
4206 dnl Everybody supports this, except MS.
4207 dnl Seems like the kind of thing we should be testing for, though.
4208 ## Note: PTYs are broken on darwin <6.  Use at your own risk.
4209 if test "${opsys}" != "mingw32"; then
4210   AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4211 fi
4212
4213 dnl Everybody supports this, except MS-DOS.
4214 dnl Seems like the kind of thing we should be testing for, though.
4215 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4216 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4217   4.2-compatible sockets.])
4218
4219 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4220
4221 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4222   a null file, or a data sink.])
4223 if test "${opsys}" = "mingw32"; then
4224   AC_DEFINE(NULL_DEVICE, ["NUL:"])
4225 else
4226   AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4227 fi
4228
4229 if test "${opsys}" = "mingw32"; then
4230   SEPCHAR=';'
4231 else
4232   SEPCHAR=':'
4233 fi
4234 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4235 dnl This is for MinGW, and is used in test/automated/Makefile.in.
4236 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4237 dnl decides that a command-line argument to be passed to a MinGW program
4238 dnl is a PATH-style list of directories.  But that heuristics plays it
4239 dnl safe, and only does the replacement when it is _absolutely_ sure it
4240 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4241 dnl which breaks in-tree builds.  So we do this manually instead.
4242 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4243 dnl be computed as ':' in MSYS Bash.
4244 AC_SUBST(SEPCHAR)
4245
4246 dnl Everybody supports this, except MS-DOS.
4247 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4248
4249 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4250
4251
4252 AC_DEFINE(DIRECTORY_SEP, ['/'],
4253   [Character that separates directories in a file name.])
4254
4255 if test "${opsys}" = "mingw32"; then
4256   AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4257     [Returns true if character is a device separator.])
4258
4259   AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4260     [Returns true if character is a directory separator.])
4261
4262   AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4263     [Returns true if character is any form of separator.])
4264 else
4265   AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4266     [Returns true if character is a device separator.])
4267
4268   AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4269     [Returns true if character is a directory separator.])
4270
4271   AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4272     [Returns true if character is any form of separator.])
4273 fi
4274
4275 AH_TEMPLATE(NO_EDITRES, [Define if XEditRes should not be used.])
4276
4277 case $opsys in
4278   aix4-2)
4279     dnl Unfortunately without libXmu we cannot support EditRes.
4280     if test "x$ac_cv_search_XmuConvertStandardSelection" = xno; then
4281       AC_DEFINE(NO_EDITRES, 1)
4282     fi
4283     ;;
4284
4285   hpux*)
4286     dnl Assar Westerlund <assar@sics.se> says this is necessary for
4287     dnl HP-UX 10.20, and that it works for HP-UX 0 as well.
4288     AC_DEFINE(NO_EDITRES, 1)
4289     ;;
4290 esac
4291
4292
4293 case $opsys in
4294   irix6-5 | sol2* | unixware )
4295     dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4296     dnl instead, there's a system variable _sys_nsig.  Unfortunately, we
4297     dnl need the constant to dimension an array.  So wire in the appropriate
4298     dnl value here.
4299     AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4300     ;;
4301 esac
4302
4303 emacs_broken_SIGIO=no
4304
4305 case $opsys in
4306   dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4307   dnl See eg <http://article.gmane.org/gmane.os.openbsd.ports/46831>.
4308   hpux* | irix6-5 | nacl | openbsd | sol2* | unixware )
4309     emacs_broken_SIGIO=yes
4310     ;;
4311
4312   aix4-2)
4313     dnl On AIX Emacs uses the gmalloc.c malloc implementation.  But given
4314     dnl the way this system works, libc functions that return malloced
4315     dnl memory use the libc malloc implementation. Calling xfree or
4316     dnl xrealloc on the results of such functions results in a crash.
4317     dnl
4318     dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4319     dnl but that does not currently work on this system.
4320     dnl
4321     dnl It is possible to completely override the malloc implementation on
4322     dnl AIX, but that involves putting the malloc functions in a shared
4323     dnl library and setting the MALLOCTYPE environment variable to point to
4324     dnl that shared library.
4325     dnl
4326     dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4327     dnl to avoid a crash just use the Emacs implementation for that function.
4328     dnl
4329     dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4330     dnl of this file, so that we do not check for get_current_dir_name
4331     dnl on AIX.  But that might be fragile if something else ends
4332     dnl up testing for get_current_dir_name as a dependency.
4333     AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4334       get_current_dir_name should not be used.])
4335     ;;
4336
4337   freebsd)
4338     dnl Circumvent a bug in FreeBSD.  In the following sequence of
4339     dnl writes/reads on a PTY, read(2) returns bogus data:
4340     dnl
4341     dnl write(2)  1022 bytes
4342     dnl write(2)   954 bytes, get EAGAIN
4343     dnl read(2)   1024 bytes in process_read_output
4344     dnl read(2)     11 bytes in process_read_output
4345     dnl
4346     dnl That is, read(2) returns more bytes than have ever been written
4347     dnl successfully.  The 1033 bytes read are the 1022 bytes written
4348     dnl successfully after processing (for example with CRs added if the
4349     dnl terminal is set up that way which it is here).  The same bytes will
4350     dnl be seen again in a later read(2), without the CRs.
4351     AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4352       work around an issue when reading from a PTY.])
4353     ;;
4354 esac
4355
4356 case $opsys in
4357   gnu-* | sol2-10 )
4358     dnl FIXME Can't we test if this exists (eg /proc/$$)?
4359     AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4360   ;;
4361 esac
4362
4363 case $opsys in
4364   darwin | dragonfly | freebsd | netbsd | openbsd )
4365     AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4366       close a pty to make it a controlling terminal (it is already a
4367       controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4368   ;;
4369 esac
4370
4371 dnl FIXME Surely we can test for this rather than hard-code it.
4372 case $opsys in
4373   netbsd | openbsd) sound_device="/dev/audio" ;;
4374   *) sound_device="/dev/dsp" ;;
4375 esac
4376
4377 dnl Used in sound.c
4378 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4379   [Name of the default sound device.])
4380
4381
4382 dnl Emacs can read input using SIGIO and buffering characters itself,
4383 dnl or using CBREAK mode and making C-g cause SIGINT.
4384 dnl The choice is controlled by the variable interrupt_input.
4385 dnl
4386 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4387 dnl
4388 dnl Emacs uses the presence of the USABLE_SIGIO macro
4389 dnl to indicate whether or not signal-driven I/O is possible.  It uses
4390 dnl INTERRUPT_INPUT to decide whether to use it by default.
4391 dnl
4392 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4393 dnl CBREAK mode has two disadvantages
4394 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4395 dnl I hear that in system V this problem does not exist.
4396 dnl 2) Control-G causes output to be discarded.
4397 dnl I do not know whether this can be fixed in system V.
4398 dnl
4399 dnl Another method of doing input is planned but not implemented.
4400 dnl It would have Emacs fork off a separate process
4401 dnl to read the input and send it to the true Emacs process
4402 dnl through a pipe.
4403 case $opsys in
4404   darwin | gnu-linux | gnu-kfreebsd )
4405     AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4406   ;;
4407 esac
4408
4409
4410 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4411 dnl as 'NO', we must define NARROWPROTO manually.  Such a define is
4412 dnl generated in the Makefile generated by 'xmkmf'.  If we don't define
4413 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4414 dnl taking float or double parameters.
4415 case $opsys in
4416   cygwin|gnu|gnu-linux|gnu-kfreebsd|irix6-5|freebsd|netbsd|openbsd)
4417     AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4418       file defines 'NeedWidePrototypes' as 'NO'.])
4419   ;;
4420 esac
4421
4422
4423 dnl Used in process.c, this must be a loop, even if it only runs once.
4424 dnl (Except on SGI; see below.  Take that, clarity and consistency!)
4425 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4426 dnl Only used if !PTY_ITERATION.  Iterate from FIRST_PTY_LETTER to z,
4427 dnl trying suffixes 0-16.
4428 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4429   first PTY, if PTYs are supported.])
4430 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4431 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4432   end of a PTY, if non-standard.])
4433 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4434   end of a PTY, if non-standard.])
4435
4436 case $opsys in
4437   aix4-2 )
4438     AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4439     dnl You allocate a pty by opening /dev/ptc to get the master side.
4440     dnl To get the name of the slave side, you just ttyname() the master side.
4441     AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4442     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4443     ;;
4444
4445   cygwin )
4446     AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4447     dnl multi-line AC_DEFINEs are hard. :(
4448     AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (false)])
4449     AC_DEFINE(PTY_NAME_SPRINTF, [])
4450     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4451     ;;
4452
4453   gnu | openbsd )
4454     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4455     ;;
4456
4457   gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4458     dnl if HAVE_GRANTPT
4459     if test "x$ac_cv_func_grantpt" = xyes; then
4460       AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4461       AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4462       dnl Note that grantpt and unlockpt may fork.  We must block SIGCHLD
4463       dnl to prevent sigchld_handler from intercepting the child's death.
4464       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); }])
4465       dnl if HAVE_POSIX_OPENPT
4466       if test "x$ac_cv_func_posix_openpt" = xyes; then
4467         AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4468         AC_DEFINE(PTY_NAME_SPRINTF, [])
4469       dnl if HAVE_GETPT
4470       elif test "x$ac_cv_func_getpt" = xyes; then
4471         AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4472         AC_DEFINE(PTY_NAME_SPRINTF, [])
4473       else
4474         AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4475       fi
4476     else
4477       AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4478     fi
4479     ;;
4480
4481   hpux*)
4482     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4483     AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4484     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4485     ;;
4486
4487   irix6-5 )
4488     dnl It looks like this cannot be right, because it is not a loop.
4489     dnl However, process.c actually does this:
4490     dnl # ifndef __sgi
4491     dnl   continue;
4492     dnl # else
4493     dnl   return -1;
4494     dnl # endif
4495     dnl which presumably makes it OK, since irix == sgi (?).
4496     dnl FIXME it seems like this special treatment is unnecessary?
4497     dnl Why can't irix use a single-trip loop like eg cygwin?
4498     AC_DEFINE(PTY_ITERATION, [])
4499     dnl Not used, because PTY_ITERATION is defined.
4500     AC_DEFINE(FIRST_PTY_LETTER, ['q'])
4501     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); }])
4502     dnl No need to get the pty name at all.
4503     AC_DEFINE(PTY_NAME_SPRINTF, [])
4504     dnl No need to use sprintf to get the tty name--we get that from _getpty.
4505     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4506     ;;
4507
4508   sol2* )
4509     dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4510     dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4511     dnl from intercepting that death.  If any child but grantpt's should die
4512     dnl within, it should be caught after sigrelse(2).
4513     AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4514     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); }])
4515     ;;
4516
4517   unixware )
4518     dnl Comments are as per sol2*.
4519     AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4520     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); }])
4521     ;;
4522 esac
4523
4524
4525 case $opsys in
4526   sol2* | unixware )
4527     dnl This change means that we don't loop through allocate_pty too
4528     dnl many times in the (rare) event of a failure.
4529     AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4530     AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4531     dnl Push various streams modules onto a PTY channel.  Used in process.c.
4532     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.])
4533     ;;
4534 esac
4535
4536
4537 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4538 "typing" a signal character on the pty.])
4539
4540 case $opsys in
4541   dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4542   dnl thomas@mathematik.uni-bremen.de says this is needed for IRIX.
4543   aix4-2 | cygwin | gnu | irix6-5 | dragonfly | freebsd | netbsd | openbsd | darwin )
4544     AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4545     ;;
4546
4547   dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4548   dnl FIXME Does gnu-kfreebsd have linux/version.h?  It seems unlikely...
4549   gnu-linux | gnu-kfreebsd )
4550
4551     AC_MSG_CHECKING([for signals via characters])
4552     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4553 #include <linux/version.h>
4554 #if LINUX_VERSION_CODE < 0x20400
4555 # error "Linux version too old"
4556 #endif
4557       ]], [[]])], emacs_signals_via_chars=yes, emacs_signals_via_chars=no)
4558
4559     AC_MSG_RESULT([$emacs_signals_via_chars])
4560     test $emacs_signals_via_chars = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4561     ;;
4562 esac
4563
4564
4565 AH_TEMPLATE(TAB3, [Undocumented.])
4566
4567 case $opsys in
4568   darwin) AC_DEFINE(TAB3, OXTABS) ;;
4569
4570   gnu | dragonfly | freebsd | netbsd | openbsd )
4571     AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4572     AC_DEFINE(TAB3, OXTABS)
4573     ;;
4574
4575   gnu-linux | gnu-kfreebsd )
4576     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4577 #ifndef __ia64__
4578 # error "not ia64"
4579 #endif
4580       ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4581         [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)],
4582         [Mark a secondary stack, like the register stack on the ia64.]), [])
4583     ;;
4584
4585   hpux*)
4586     AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4587       run_time_remap; for HPUX.])
4588     ;;
4589 esac
4590
4591
4592 dnl This won't be used automatically yet.  We also need to know, at least,
4593 dnl that the stack is continuous.
4594 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4595   registers relevant for conservative garbage collection in the jmp_buf.])
4596
4597
4598 case $opsys in
4599   dnl Not all the architectures are tested, but there are Debian packages
4600   dnl for SCM and/or Guile on them, so the technique must work.  See also
4601   dnl comments in alloc.c concerning setjmp and gcc.
4602   dnl Fixme: it's probably safe to just use the GCC conditional below.
4603   gnu-linux | gnu-kfreebsd )
4604     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4605 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4606   || defined __alpha__ || defined __mips__ || defined __s390__ \
4607   || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4608   || defined __ia64__ || defined __sh__
4609 /* ok */
4610 #else
4611 # error "setjmp not known to work on this arch"
4612 #endif
4613     ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4614     ;;
4615 esac
4616
4617
4618 if test x$GCC = xyes; then
4619    dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4620    AC_DEFINE(GC_SETJMP_WORKS, 1)
4621 else
4622   case $opsys in
4623     dnl irix: Tested on Irix 6.5.  SCM worked on earlier versions.
4624     aix* | dragonfly | freebsd | netbsd | openbsd | irix6-5 | sol2* )
4625       AC_DEFINE(GC_SETJMP_WORKS, 1)
4626       ;;
4627   esac
4628 fi                              dnl GCC?
4629
4630 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4631 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4632   [AC_LINK_IFELSE(
4633      [AC_LANG_PROGRAM(
4634        [[#include <setjmp.h>
4635          #ifdef __MINGW32__
4636          # define _longjmp longjmp
4637          #endif
4638        ]],
4639        [[jmp_buf j;
4640          if (! _setjmp (j))
4641            _longjmp (j, 1);]])],
4642      [emacs_cv_func__setjmp=yes],
4643      [emacs_cv_func__setjmp=no])])
4644 if test $emacs_cv_func__setjmp = yes; then
4645   AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4646 fi
4647
4648 # We need to preserve signal mask to handle C stack overflows.
4649 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4650   [AC_LINK_IFELSE(
4651      [AC_LANG_PROGRAM(
4652        [[#include <setjmp.h>
4653        ]],
4654        [[sigjmp_buf j;
4655          if (! sigsetjmp (j, 1))
4656            siglongjmp (j, 1);]])],
4657      [emacs_cv_func_sigsetjmp=yes],
4658      [emacs_cv_func_sigsetjmp=no])])
4659 if test $emacs_cv_func_sigsetjmp = yes; then
4660   AC_DEFINE([HAVE_SIGSETJMP], 1,
4661     [Define to 1 if sigsetjmp and siglongjmp work.])
4662 fi
4663
4664 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4665   yes,yes,* | *,*,mingw32)
4666     AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4667       [Define to 1 if C stack overflow can be handled in some cases.]);;
4668 esac
4669
4670 case $opsys in
4671   sol2* | unixware )
4672     dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4673     dnl subprocesses the usual way.  But TIOCSIGNAL does work for PTYs,
4674     dnl and this is all we need.
4675     AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4676     ;;
4677 esac
4678
4679
4680 case $opsys in
4681   hpux* | sol2* )
4682     dnl Used in xfaces.c.
4683     AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4684       some systems, where it requires time.h.])
4685     ;;
4686 esac
4687
4688
4689 dnl Define symbols to identify the version of Unix this is.
4690 dnl Define all the symbols that apply correctly.
4691 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4692 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4693 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4694 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4695
4696 case $opsys in
4697   aix4-2)
4698     AC_DEFINE(USG, [])
4699     dnl This symbol should be defined on AIX Version 3  ???????
4700     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4701 #ifndef _AIX
4702 # error "_AIX not defined"
4703 #endif
4704     ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4705     ;;
4706
4707   cygwin)
4708     AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4709     ;;
4710
4711   darwin)
4712     dnl Not __APPLE__, as this may not be defined on non-OSX Darwin.
4713     dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4714     dnl distinguish OS X from pure Darwin.
4715     AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4716     ;;
4717
4718   gnu-linux | gnu-kfreebsd )
4719     AC_DEFINE(USG, [])
4720     AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4721     ;;
4722
4723   hpux*)
4724     AC_DEFINE(USG, [])
4725     AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4726     ;;
4727
4728   irix6-5)
4729     AC_DEFINE(USG, [])
4730     AC_DEFINE(USG5_4, [])
4731     AC_DEFINE(IRIX6_5, [], [Define if the system is IRIX.])
4732     ;;
4733
4734   mingw32)
4735     AC_DEFINE(DOS_NT, [])
4736     AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4737     if test "x$ac_enable_checking" != "x" ; then
4738       AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4739     fi
4740     ;;
4741
4742   sol2*)
4743     AC_DEFINE(USG, [])
4744     AC_DEFINE(USG5_4, [])
4745     AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4746     ;;
4747
4748   unixware)
4749     AC_DEFINE(USG, [])
4750     AC_DEFINE(USG5_4, [])
4751     ;;
4752 esac
4753
4754 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4755   [case $opsys in
4756      aix4-2 | nacl)
4757        dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4758        emacs_cv_usable_FIONREAD=no
4759        ;;
4760
4761      mingw32)
4762        emacs_cv_usable_FIONREAD=yes
4763        ;;
4764
4765      *)
4766        AC_COMPILE_IFELSE(
4767          [AC_LANG_PROGRAM([[#include <sys/types.h>
4768                             #include <sys/ioctl.h>
4769                             #ifdef USG5_4
4770                             # include <sys/filio.h>
4771                             #endif
4772                           ]],
4773                           [[int foo = ioctl (0, FIONREAD, &foo);]])],
4774          [emacs_cv_usable_FIONREAD=yes],
4775          [emacs_cv_usable_FIONREAD=no])
4776        ;;
4777    esac])
4778 if test $emacs_cv_usable_FIONREAD = yes; then
4779   AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4780
4781   if test $emacs_broken_SIGIO = no; then
4782     AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4783       [AC_COMPILE_IFELSE(
4784          [AC_LANG_PROGRAM([[#include <fcntl.h>
4785                             #include <signal.h>
4786                           ]],
4787                           [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4788          [emacs_cv_usable_SIGIO=yes],
4789          [emacs_cv_usable_SIGIO=no])],
4790       [emacs_cv_usable_SIGIO=yes],
4791       [emacs_cv_usable_SIGIO=no])
4792     if test $emacs_cv_usable_SIGIO = yes; then
4793       AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4794     fi
4795   fi
4796 fi
4797
4798 case $opsys in
4799   hpux11)
4800     dnl It works to open the pty's tty in the parent (Emacs), then
4801     dnl close and reopen it in the child.
4802     AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4803       works to open a pty's tty in the parent process, then close and
4804       reopen it in the child.])
4805     ;;
4806
4807   irix6-5)
4808     AC_DEFINE(PREFER_VSUSP, 1, [Define if process_send_signal should
4809       use VSUSP instead of VSWTCH.])
4810     ;;
4811
4812   sol2-10)
4813     AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4814       on Solaris.])
4815     ;;
4816 esac
4817
4818 # Set up the CFLAGS for real compilation, so we can substitute it.
4819 CFLAGS="$REAL_CFLAGS"
4820 CPPFLAGS="$REAL_CPPFLAGS"
4821 LIBS="$REAL_LIBS"
4822
4823 ## Hack to detect a buggy GCC version.
4824 if test "$GCC" = yes && \
4825    $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4826   case $CFLAGS in
4827     *-fno-optimize-sibling-calls*) ;;
4828     *-O@<:@23@:>@*)
4829       AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4830   esac
4831 fi
4832
4833 version=$PACKAGE_VERSION
4834
4835 copyright="Copyright (C) 2016 Free Software Foundation, Inc."
4836 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4837   [Short copyright string for this version of Emacs.])
4838 AC_SUBST(copyright)
4839
4840 ### Specify what sort of things we'll be editing into Makefile and config.h.
4841 ### Use configuration here uncanonicalized to avoid exceeding size limits.
4842 AC_SUBST(version)
4843 AC_SUBST(configuration)
4844 ## Unused?
4845 AC_SUBST(canonical)
4846 AC_SUBST(srcdir)
4847 AC_SUBST(prefix)
4848 AC_SUBST(exec_prefix)
4849 AC_SUBST(bindir)
4850 AC_SUBST(datadir)
4851 AC_SUBST(sharedstatedir)
4852 AC_SUBST(libexecdir)
4853 AC_SUBST(mandir)
4854 AC_SUBST(infodir)
4855 AC_SUBST(lispdir)
4856 AC_SUBST(standardlisppath)
4857 AC_SUBST(locallisppath)
4858 AC_SUBST(lisppath)
4859 AC_SUBST(x_default_search_path)
4860 AC_SUBST(etcdir)
4861 AC_SUBST(archlibdir)
4862 AC_SUBST(etcdocdir)
4863 AC_SUBST(bitmapdir)
4864 AC_SUBST(gamedir)
4865 AC_SUBST(gameuser)
4866 AC_SUBST(gamegroup)
4867 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
4868 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
4869 ## end of LIBX_BASE, but nothing ever set it.
4870 AC_SUBST(LD_SWITCH_X_SITE)
4871 AC_SUBST(C_SWITCH_X_SITE)
4872 AC_SUBST(GNUSTEP_CFLAGS)
4873 AC_SUBST(CFLAGS)
4874 ## Used in lwlib/Makefile.in.
4875 AC_SUBST(X_TOOLKIT_TYPE)
4876 AC_SUBST(ns_appdir)
4877 AC_SUBST(ns_appbindir)
4878 AC_SUBST(ns_appresdir)
4879 AC_SUBST(ns_appsrc)
4880 AC_SUBST(GNU_OBJC_CFLAGS)
4881 AC_SUBST(OTHER_FILES)
4882
4883 if test -n "${term_header}"; then
4884     AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
4885         [Define to the header for the built-in window system.])
4886 fi
4887
4888 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION,  "${canonical}",
4889                    [Define to the canonical Emacs configuration name.])
4890 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
4891                    [Define to the options passed to configure.])
4892 AH_TEMPLATE(config_opsysfile, [Some platforms that do not use configure
4893   define this to include extra configuration information.])
4894
4895 case $opsys in
4896   mingw32)
4897     AC_DEFINE(config_opsysfile, <ms-w32.h>, [])
4898     ;;
4899 esac
4900
4901 XMENU_OBJ=
4902 XOBJ=
4903 FONT_OBJ=
4904 if test "${HAVE_X_WINDOWS}" = "yes" ; then
4905   AC_DEFINE(HAVE_X_WINDOWS, 1,
4906             [Define to 1 if you want to use the X window system.])
4907   XMENU_OBJ=xmenu.o
4908   XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
4909   FONT_OBJ=xfont.o
4910   if test "$USE_CAIRO" = "yes"; then
4911     FONT_OBJ="ftfont.o ftcrfont.o"
4912   elif test "$HAVE_XFT" = "yes"; then
4913     FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
4914   elif test "$HAVE_FREETYPE" = "yes"; then
4915     FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
4916   fi
4917   AC_SUBST(FONT_OBJ)
4918 fi
4919 AC_SUBST(XMENU_OBJ)
4920 AC_SUBST(XOBJ)
4921 AC_SUBST(FONT_OBJ)
4922
4923 WIDGET_OBJ=
4924 MOTIF_LIBW=
4925 if test "${USE_X_TOOLKIT}" != "none" ; then
4926   WIDGET_OBJ=widget.o
4927   AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
4928   if test "${USE_X_TOOLKIT}" = "LUCID"; then
4929     AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
4930   elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
4931     AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
4932     MOTIF_LIBW=-lXm
4933     case "$opsys" in
4934       gnu-linux)
4935         ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
4936         MOTIF_LIBW="$MOTIF_LIBW -lXpm"
4937         ;;
4938
4939       unixware)
4940         ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
4941         ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
4942         MOTIF_LIBW="MOTIF_LIBW -lXimp"
4943         ;;
4944
4945       aix4-2)
4946         ## olson@mcs.anl.gov says -li18n is needed by -lXm.
4947         MOTIF_LIBW="$MOTIF_LIBW -li18n"
4948         ;;
4949     esac
4950     MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
4951   fi
4952 fi
4953 AC_SUBST(WIDGET_OBJ)
4954
4955 TOOLKIT_LIBW=
4956 case "$USE_X_TOOLKIT" in
4957   MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
4958   LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
4959   none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
4960 esac
4961 if test "$HAVE_XWIDGETS" = "yes"; then
4962   TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
4963 fi
4964 AC_SUBST(TOOLKIT_LIBW)
4965
4966 if test "${opsys}" != "mingw32"; then
4967   if test "$USE_X_TOOLKIT" = "none"; then
4968     LIBXT_OTHER="\$(LIBXSM)"
4969   else
4970     LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
4971   fi
4972 fi
4973 AC_SUBST(LIBXT_OTHER)
4974
4975 if test "${HAVE_X11}" = "yes" ; then
4976   AC_DEFINE(HAVE_X11, 1,
4977             [Define to 1 if you want to use version 11 of X windows.])
4978   LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
4979 else
4980   LIBX_OTHER=
4981 fi
4982 AC_SUBST(LIBX_OTHER)
4983
4984 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
4985   LIBXMENU=
4986 elif test "$USE_X_TOOLKIT" = none; then
4987   LIBXMENU='$(oldXMenudir)/libXMenu11.a'
4988 else
4989   LIBXMENU='$(lwlibdir)/liblw.a'
4990 fi
4991 AC_SUBST(LIBXMENU)
4992
4993 AC_CACHE_CHECK([for struct alignment],
4994   [emacs_cv_struct_alignment],
4995   [AC_COMPILE_IFELSE(
4996      [AC_LANG_PROGRAM([[#include <stddef.h>
4997                         struct __attribute__ ((aligned (8))) s { char c; };
4998                         struct t { char c; struct s s; };
4999                         char verify[offsetof (struct t, s) == 8 ? 1 : -1];
5000                       ]])],
5001      [emacs_cv_struct_alignment=yes],
5002      [emacs_cv_struct_alignment=no])])
5003 if test "$emacs_cv_struct_alignment" = yes; then
5004   AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5005     [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5006      structure to an N-byte boundary.])
5007 fi
5008
5009 if test "${GNU_MALLOC}" = "yes" ; then
5010   AC_DEFINE(GNU_MALLOC, 1,
5011             [Define to 1 if you want to use the GNU memory allocator.])
5012 fi
5013
5014 RALLOC_OBJ=
5015 if test "${REL_ALLOC}" = "yes" ; then
5016   AC_DEFINE(REL_ALLOC, 1,
5017             [Define REL_ALLOC if you want to use the relocating allocator for
5018              buffer space.])
5019
5020   test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5021 fi
5022 AC_SUBST(RALLOC_OBJ)
5023
5024 if test "$opsys" = "cygwin"; then
5025   CYGWIN_OBJ="sheap.o cygw32.o"
5026   ## Cygwin differs because of its unexec().
5027   PRE_ALLOC_OBJ=
5028   POST_ALLOC_OBJ=lastfile.o
5029 elif test "$opsys" = "mingw32"; then
5030   CYGWIN_OBJ=
5031   PRE_ALLOC_OBJ=
5032   POST_ALLOC_OBJ=lastfile.o
5033 else
5034   CYGWIN_OBJ=
5035   PRE_ALLOC_OBJ=lastfile.o
5036   POST_ALLOC_OBJ=
5037 fi
5038 AC_SUBST(CYGWIN_OBJ)
5039 AC_SUBST(PRE_ALLOC_OBJ)
5040 AC_SUBST(POST_ALLOC_OBJ)
5041
5042 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5043 dnl verbatim defined above.  The tricky name is apropos, as this hack
5044 dnl makes Fortify go sour!
5045 AH_VERBATIM([FORTIFY_SOUR],
5046 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5047    The workaround disables some useful run-time checking, so it
5048    should be conditional to the platforms with the performance bug.
5049    Perhaps Apple will fix this some day; also see m4/extern-inline.m4.  */
5050 #if defined __APPLE__ && defined __GNUC__
5051 # ifndef _DONT_USE_CTYPE_INLINE_
5052 #  define _DONT_USE_CTYPE_INLINE_
5053 # endif
5054 # ifndef _FORTIFY_SOURCE
5055 #  define _FORTIFY_SOURCE 0
5056 # endif
5057 #endif
5058 ])
5059
5060 # If user asks to omit features, disable optional features that gnulib
5061 # might otherwise enable.
5062 if test "$with_features" = no && test "$enable_acl" != yes; then
5063   enable_acl=no
5064 fi
5065
5066 # Configure gnulib.  Although this does not affect CFLAGS or LIBS permanently.
5067 # it temporarily reverts them to their pre-pkg-config values,
5068 # because gnulib needs to work with both src (which uses the
5069 # pkg-config stuff) and lib-src (which does not).  For example, gnulib
5070 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5071 # and it therefore needs to run in an environment where LIBS does not
5072 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5073 # for some package unrelated to lib-src.
5074 SAVE_CFLAGS=$CFLAGS
5075 SAVE_LIBS=$LIBS
5076 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5077 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5078 gl_ASSERT_NO_GNULIB_POSIXCHECK
5079 gl_ASSERT_NO_GNULIB_TESTS
5080 gl_INIT
5081 CFLAGS=$SAVE_CFLAGS
5082 LIBS=$SAVE_LIBS
5083
5084 if test "${opsys}" = "mingw32"; then
5085   CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5086   # Remove unneeded switches from the value of CC that goes to Makefiles
5087   CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5088 fi
5089
5090 case "$opsys" in
5091   aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5092
5093   cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5094
5095   darwin)
5096    ## The -headerpad option tells ld (see man page) to leave room at the
5097    ## end of the header for adding load commands.  Needed for dumping.
5098    ## 0x1000 is enough for roughly 52 load commands on the x86_64
5099    ## architecture (where they are 78 bytes each). The actual number of
5100    ## load commands added is not consistent but normally ranges from
5101    ## about 14 to about 34. Setting it high gets us plenty of slop and
5102    ## only costs about 1.5K of wasted binary space.
5103    headerpad_extra=1000
5104    if test "$HAVE_NS" = "yes"; then
5105      libs_nsgui="-framework AppKit"
5106      if test "$NS_IMPL_COCOA" = "yes"; then
5107         libs_nsgui="$libs_nsgui -framework IOKit"
5108      fi
5109    else
5110      libs_nsgui=
5111    fi
5112    LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5113
5114    ## This is here because src/Makefile.in did some extra fiddling around
5115    ## with LD_SWITCH_SYSTEM.  It seems cleaner to put this in
5116    ## LD_SWITCH_SYSTEM_TEMACS instead,
5117    test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5118      LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5119    ;;
5120
5121   ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5122   ## find X at run-time.
5123   ## When handled by cpp, this was in LD_SWITCH_SYSTEM.  However, at the
5124   ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5125   ## had not yet been defined and was expanded to null.  Hence LD_SWITCH_SYSTEM
5126   ## had different values in configure (in ac_link) and src/Makefile.in.
5127   ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5128   gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5129
5130   mingw32)
5131    ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5132    case "$canonical" in
5133      x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5134      *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5135    esac
5136    ;;
5137
5138   *) LD_SWITCH_SYSTEM_TEMACS= ;;
5139 esac
5140
5141 # -nopie fixes a temacs segfault on Gentoo, OpenBSD, and other systems
5142 # with "hardened" GCC configurations for some reason (Bug#18784).
5143 # We don't know why -nopie works, but not segfaulting is better than
5144 # segfaulting.  Use ac_c_werror_flag=yes when trying -nopie, otherwise
5145 # clang keeps warning that it does not understand -nopie, and pre-4.6
5146 # GCC has a similar problem (Bug#20338).
5147 AC_CACHE_CHECK([whether $CC accepts -nopie],
5148   [emacs_cv_prog_cc_nopie],
5149   [emacs_save_c_werror_flag=$ac_c_werror_flag
5150    emacs_save_LDFLAGS=$LDFLAGS
5151    ac_c_werror_flag=yes
5152    LDFLAGS="$LDFLAGS -nopie"
5153    AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
5154      [emacs_cv_prog_cc_nopie=yes],
5155      [emacs_cv_prog_cc_nopie=no])
5156    ac_c_werror_flag=$emacs_save_c_werror_flag
5157    LDFLAGS=$emacs_save_LDFLAGS])
5158 if test "$emacs_cv_prog_cc_nopie" = yes; then
5159   LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -nopie"
5160 fi
5161
5162 if test x$ac_enable_profiling != x ; then
5163   case $opsys in
5164     *freebsd | gnu-linux) ;;
5165     *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5166   esac
5167 fi
5168
5169 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5170
5171 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5172
5173 ## Common for all window systems
5174 if test "$window_system" != "none"; then
5175   AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5176   AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5177   WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5178 fi
5179
5180 AC_SUBST(WINDOW_SYSTEM_OBJ)
5181
5182 AH_TOP([/* GNU Emacs site configuration template file.
5183
5184 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2016
5185   Free Software Foundation, Inc.
5186
5187 This file is part of GNU Emacs.
5188
5189 GNU Emacs is free software: you can redistribute it and/or modify
5190 it under the terms of the GNU General Public License as published by
5191 the Free Software Foundation, either version 3 of the License, or
5192 (at your option) any later version.
5193
5194 GNU Emacs is distributed in the hope that it will be useful,
5195 but WITHOUT ANY WARRANTY; without even the implied warranty of
5196 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
5197 GNU General Public License for more details.
5198
5199 You should have received a copy of the GNU General Public License
5200 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
5201
5202
5203 /* No code in Emacs #includes config.h twice, but some bits of code
5204    intended to work with other packages as well (like gmalloc.c)
5205    think they can include it as many times as they like.  */
5206 #ifndef EMACS_CONFIG_H
5207 #define EMACS_CONFIG_H
5208 ])dnl
5209
5210 AH_BOTTOM([#include <conf_post.h>
5211
5212 #endif /* EMACS_CONFIG_H */
5213
5214 /*
5215 Local Variables:
5216 mode: c
5217 End:
5218 */
5219 ])dnl
5220
5221 #### Report on what we decided to do.
5222 #### Report GTK as a toolkit, even if it doesn't use Xt.
5223 #### It makes printing result more understandable as using GTK sets
5224 #### toolkit_scroll_bars to yes by default.
5225 if test "${HAVE_GTK}" = "yes"; then
5226   USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5227 fi
5228
5229 if test $USE_ACL -ne 0; then
5230   ACL_SUMMARY="yes $LIB_ACL"
5231 else
5232   ACL_SUMMARY=no
5233 fi
5234
5235 emacs_standard_dirs='Standard dirs'
5236 AS_ECHO(["
5237 Configured for '${canonical}'.
5238
5239   Where should the build process find the source code?    ${srcdir}
5240   What compiler should emacs be built with?               ${CC} ${CFLAGS}
5241   Should Emacs use the GNU version of malloc?             ${GNU_MALLOC}${GNU_MALLOC_reason}
5242   Should Emacs use a relocating allocator for buffers?    ${REL_ALLOC}
5243   Should Emacs use mmap(2) for buffer allocation?         $use_mmap_for_buffers
5244   What window system should Emacs use?                    ${window_system}
5245   What toolkit should Emacs use?                          ${USE_X_TOOLKIT}
5246   Where do we find X Windows header files?                ${x_includes:-$emacs_standard_dirs}
5247   Where do we find X Windows libraries?                   ${x_libraries:-$emacs_standard_dirs}"])
5248
5249 optsep=
5250 emacs_config_features=
5251 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5252   GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5253   LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT X11 NS MODULES \
5254   XWIDGETS WEBKIT GIR; do
5255
5256     case $opt in
5257       NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5258       CAIRO|TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5259       *) eval val=\${HAVE_$opt} ;;
5260     esac
5261     case x$val in
5262       xno|xnone|x) continue ;;
5263     esac
5264     case $opt in
5265       X_TOOLKIT)
5266         case $val in
5267           GTK*|LUCID|MOTIF) opt=$val ;;
5268           *) continue ;;
5269         esac
5270       ;;
5271     esac
5272     AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5273     optsep=' '
5274 done
5275 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5276   [Summary of some of the main features enabled by configure.])
5277
5278 AS_ECHO(["  Does Emacs use -lXaw3d?                                 ${HAVE_XAW3D}
5279   Does Emacs use -lXpm?                                   ${HAVE_XPM}
5280   Does Emacs use -ljpeg?                                  ${HAVE_JPEG}
5281   Does Emacs use -ltiff?                                  ${HAVE_TIFF}
5282   Does Emacs use a gif library?                           ${HAVE_GIF} $LIBGIF
5283   Does Emacs use a png library?                           ${HAVE_PNG} $LIBPNG
5284   Does Emacs use -lrsvg-2?                                ${HAVE_RSVG}
5285   Does Emacs use cairo?                                   ${USE_CAIRO}
5286   Does Emacs use imagemagick?                             ${HAVE_IMAGEMAGICK}
5287   Does Emacs support sound?                               ${HAVE_SOUND}
5288   Does Emacs use -lgpm?                                   ${HAVE_GPM}
5289   Does Emacs use -ldbus?                                  ${HAVE_DBUS}
5290   Does Emacs use -lgconf?                                 ${HAVE_GCONF}
5291   Does Emacs use GSettings?                               ${HAVE_GSETTINGS}
5292   Does Emacs use a file notification library?             ${NOTIFY_SUMMARY}
5293   Does Emacs use access control lists?                    ${ACL_SUMMARY}
5294   Does Emacs use -lselinux?                               ${HAVE_LIBSELINUX}
5295   Does Emacs use -lgnutls?                                ${HAVE_GNUTLS}
5296   Does Emacs use -lxml2?                                  ${HAVE_LIBXML2}
5297   Does Emacs use -lfreetype?                              ${HAVE_FREETYPE}
5298   Does Emacs use -lm17n-flt?                              ${HAVE_M17N_FLT}
5299   Does Emacs use -lotf?                                   ${HAVE_LIBOTF}
5300   Does Emacs use -lxft?                                   ${HAVE_XFT}
5301   Does Emacs directly use zlib?                           ${HAVE_ZLIB}
5302   Does Emacs have dynamic modules support?                ${HAVE_MODULES}
5303   Does Emacs use toolkit scroll bars?                     ${USE_TOOLKIT_SCROLL_BARS}
5304   Does Emacs support Xwidgets (requires gtk3)?            ${HAVE_XWIDGETS}
5305 ${DOES_XWIDGETS_USE_GIR}"])
5306
5307 if test -n "${EMACSDATA}"; then
5308    AS_ECHO(["  Environment variable EMACSDATA set to:                  $EMACSDATA"])
5309 fi
5310 if test -n "${EMACSDOC}"; then
5311    AS_ECHO(["  Environment variable EMACSDOC set to:                   $EMACSDOC"])
5312 fi
5313
5314 echo
5315
5316 if test "$HAVE_NS" = "yes"; then
5317    echo
5318    AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5319 The installed application will go to nextstep/Emacs.app and can be
5320 run or moved from there."])
5321    if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5322       echo "The application will be fully self-contained."
5323     else
5324       AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5325 You may need to run \"${MAKE-make} install\" with sudo.  The application will fail
5326 to run if these resources are not installed."])
5327    fi
5328    echo
5329 fi
5330
5331 if test "${opsys}" = "cygwin"; then
5332   case `uname -r` in
5333     1.5.*) AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5334            echo
5335            ;;
5336   esac
5337 fi
5338
5339 # Remove any trailing slashes in these variables.
5340 case $prefix in
5341   */) prefix=`AS_DIRNAME(["$prefix."])`;;
5342 esac
5343 case $exec_prefix in
5344   */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5345 esac
5346
5347 if test "$HAVE_NS" = "yes"; then
5348   if test "$NS_IMPL_GNUSTEP" = yes; then
5349     AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5350       nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5351     ns_check_file=Resources/Info-gnustep.plist
5352   else
5353     AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5354       nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5355     ns_check_file=Contents/Info.plist
5356   fi
5357   AC_SUBST(ns_check_file)
5358 fi
5359
5360 dnl config.status treats $srcdir specially, so I think this is ok...
5361 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5362
5363 dnl Obviously there is duplication here wrt $SUBDIR_MAKEFILES.
5364 dnl You _can_ use that variable in AC_CONFIG_FILES, so long as any directory
5365 dnl using automake (ie lib/) is explicitly listed and not "hidden" in a variable
5366 dnl (else you get "no 'Makefile.am' found for any configure output").
5367 dnl This will work, but you get a config.status that is not quite right
5368 dnl (see http://lists.gnu.org/archive/html/bug-autoconf/2008-08/msg00028.html).
5369 dnl That doesn't have any obvious consequences for Emacs, but on the whole
5370 dnl it seems better to just live with the duplication.
5371 SUBDIR_MAKEFILES="lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile nt/Makefile"
5372
5373 AC_CONFIG_FILES([Makefile lib/Makefile lib-src/Makefile oldXMenu/Makefile \
5374        doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile \
5375        doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile \
5376        leim/Makefile nextstep/Makefile nt/Makefile])
5377
5378 dnl test/ is not present in release tarfiles.
5379 opt_makefile=test/automated/Makefile
5380
5381 if test -f "$srcdir/$opt_makefile.in"; then
5382   SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5383   dnl Again, it's best not to use a variable.  Though you can add
5384   dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5385   AC_CONFIG_FILES([test/automated/Makefile])
5386 fi
5387
5388
5389 dnl The admin/ directory used to be excluded from tarfiles.
5390 if test -d $srcdir/admin; then
5391   SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5392   AC_CONFIG_FILES([admin/charsets/Makefile])
5393   AC_CONFIG_FILES([admin/unidata/Makefile])
5394   AC_CONFIG_FILES([admin/grammars/Makefile])
5395 fi                              dnl -d admin
5396
5397
5398 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5399
5400 AC_SUBST(SUBDIR_MAKEFILES_IN)
5401
5402 dnl You might wonder (I did) why epaths.h is generated by running make,
5403 dnl rather than just letting configure generate it from epaths.in.
5404 dnl One reason is that the various paths are not fully expanded (see above);
5405 dnl eg gamedir=${prefix}/var/games/emacs.
5406 dnl Secondly, the GNU Coding standards require that one should be able
5407 dnl to run 'make prefix=/some/where/else' and override the values set
5408 dnl by configure.  This also explains the 'move-if-change' test and
5409 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5410 AC_CONFIG_COMMANDS([src/epaths.h], [
5411 if test "${opsys}" = "mingw32"; then
5412   ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5413 else
5414   ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5415 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5416 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5417
5418 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5419 dnl is not yet set, sigh.  Or we could use ../$srcdir/src/.gdbinit,
5420 dnl or a symlink?
5421 AC_CONFIG_COMMANDS([src/.gdbinit], [
5422 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5423   AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5424 fi
5425 ])
5426
5427 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5428 dnl See comments for etc-refcards-emacsver.tex.
5429 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5430 dnl it is not quite the same.  But we are generating in $srcdir.
5431 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5432 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5433 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5434 ])
5435
5436 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5437 dnl then a directory etc/refcards is created in the build directory,
5438 dnl which is probably harmless, but confusing (in out-of-tree builds).
5439 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5440 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5441 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5442 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5443 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5444 ])
5445
5446 AC_OUTPUT
5447
5448 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])