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