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