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=$OLD_LIBS
2407     fi
2408   fi
2409 fi
2410
2411 GETADDRINFO_A_LIBS="-lanl"
2412 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes, HAVE_GETADDRINFO_A=no,
2413         [$GETADDRINFO_A_LIBS])
2414 AC_SUBST(GETADDRINFO_A_LIBS)
2415
2416 OLD_LIBS=$LIBS
2417 LIBS="-lanl $LIBS"
2418 AC_CHECK_FUNCS(getaddrinfo_a)
2419 LIBS=$OLD_LIBS
2420
2421 HAVE_GTK=no
2422 GTK_OBJ=
2423 gtk_term_header=$term_header
2424 check_gtk2=no
2425 gtk3_pkg_errors=
2426 if test "${opsys}" != "mingw32"; then
2427   if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2428     GLIB_REQUIRED=2.28
2429     GTK_REQUIRED=3.0
2430     GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2431
2432     dnl Checks for libraries.
2433     EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2434       [pkg_check_gtk=yes], [pkg_check_gtk=no])
2435     if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2436        AC_MSG_ERROR($GTK_PKG_ERRORS)
2437     fi
2438     if test "$pkg_check_gtk" = "yes"; then
2439        AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2440        GTK_OBJ=emacsgtkfixed.o
2441        gtk_term_header=gtkutil.h
2442        USE_GTK_TOOLKIT="GTK3"
2443        if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2444          AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2445            [Define to 1 to disable GTK+/GDK deprecation warnings.])
2446          AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2447            [Define to 1 to disable Glib deprecation warnings.])
2448        fi
2449     else
2450        check_gtk2=yes
2451        gtk3_pkg_errors="$GTK_PKG_ERRORS "
2452     fi
2453   fi
2454
2455   if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2456     GLIB_REQUIRED=2.10
2457     GTK_REQUIRED=2.10
2458     GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2459
2460     dnl Checks for libraries.
2461     EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2462       [pkg_check_gtk=yes], [pkg_check_gtk=no])
2463     if test "$pkg_check_gtk" = "no" &&
2464        { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2465     then
2466       AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2467     fi
2468     test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2469   fi
2470 fi
2471
2472 OLD_CFLAGS=$CFLAGS
2473 OLD_LIBS=$LIBS
2474
2475 if test x"$pkg_check_gtk" = xyes; then
2476
2477   AC_SUBST(GTK_LIBS)
2478   CFLAGS="$CFLAGS $GTK_CFLAGS"
2479   LIBS="$GTK_LIBS $LIBS"
2480   dnl Try to compile a simple GTK program.
2481   AC_MSG_CHECKING([whether GTK compiles])
2482   GTK_COMPILES=no
2483   AC_LINK_IFELSE(
2484     [AC_LANG_PROGRAM(
2485        [[/* Check the Gtk and Glib APIs.  */
2486          #include <gtk/gtk.h>
2487          #include <glib-object.h>
2488          static void
2489          callback (GObject *go, GParamSpec *spec, gpointer user_data)
2490          {}
2491        ]],
2492        [[
2493          GtkSettings *gs = 0;
2494          /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2495             strict C prohibits this.  Use gtk_main_iteration to test that the
2496             libraries are there.  */
2497          if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2498                                     0, 0, 0, G_CALLBACK (callback), 0))
2499            gtk_main_iteration ();
2500        ]])],
2501     [GTK_COMPILES=yes])
2502   AC_MSG_RESULT([$GTK_COMPILES])
2503   if test "${GTK_COMPILES}" != "yes"; then
2504     GTK_OBJ=
2505     if test "$USE_X_TOOLKIT" != "maybe"; then
2506       AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log.  Maybe some x11-devel files missing?]);
2507     fi
2508   else
2509     C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2510     HAVE_GTK=yes
2511     AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2512     GTK_OBJ="gtkutil.o $GTK_OBJ"
2513     term_header=$gtk_term_header
2514     USE_X_TOOLKIT=none
2515     AC_MSG_WARN([[Your version of Gtk+ will have problems with
2516        closing open displays.  This is no problem if you just use
2517        one display, but if you use more than one and close one of them
2518        Emacs may crash.
2519        See http://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2520     sleep 3
2521   fi
2522
2523 fi
2524 AC_SUBST(GTK_OBJ)
2525
2526
2527 if test "${HAVE_GTK}" = "yes"; then
2528
2529   dnl  GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2530   dnl  a lot if #ifdef:s, say we have toolkit scrollbars.
2531   if test "$with_toolkit_scroll_bars" != no; then
2532     with_toolkit_scroll_bars=yes
2533   fi
2534
2535   dnl  Check if we have the old file selection dialog declared and
2536   dnl  in the link library.  In 2.x it may be in the library,
2537   dnl  but not declared if deprecated featured has been selected out.
2538   dnl  AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2539   HAVE_GTK_FILE_SELECTION=no
2540   AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2541                    HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2542 #include <gtk/gtk.h>])
2543   if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2544     AC_CHECK_FUNCS(gtk_file_selection_new)
2545   fi
2546
2547   dnl Same as above for gtk_handle_box.
2548   HAVE_GTK_HANDLE_BOX=no
2549   AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2550                    HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2551 #include <gtk/gtk.h>])
2552   if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2553     AC_CHECK_FUNCS(gtk_handle_box_new)
2554   fi
2555
2556   dnl Same as above for gtk_tearoff_menu_item.
2557   HAVE_GTK_TEAROFF_MENU_ITEM=no
2558   AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2559                    HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2560 #include <gtk/gtk.h>])
2561   if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2562     AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2563   fi
2564
2565   dnl Check for functions introduced in 2.14 and later.
2566   AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2567                  gtk_dialog_get_action_area gtk_widget_get_sensitive \
2568                  gtk_widget_get_mapped gtk_adjustment_get_page_size \
2569                  gtk_orientable_set_orientation \
2570                  gtk_window_set_has_resize_grip)
2571
2572  term_header=gtkutil.h
2573 fi
2574
2575 CFLAGS=$OLD_CFLAGS
2576 LIBS=$OLD_LIBS
2577
2578 dnl D-Bus has been tested under GNU/Linux only.  Must be adapted for
2579 dnl other platforms.
2580 HAVE_DBUS=no
2581 DBUS_OBJ=
2582 if test "${with_dbus}" = "yes"; then
2583    EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2584    if test "$HAVE_DBUS" = yes; then
2585      AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2586      dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2587      dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2588      dnl D-Bus 1.5.12.
2589      OLD_LIBS=$LIBS
2590      LIBS="$LIBS $DBUS_LIBS"
2591      AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2592                     dbus_type_is_valid \
2593                     dbus_validate_bus_name \
2594                     dbus_validate_path \
2595                     dbus_validate_interface \
2596                     dbus_validate_member)
2597      LIBS=$OLD_LIBS
2598      DBUS_OBJ=dbusbind.o
2599    fi
2600 fi
2601 AC_SUBST(DBUS_CFLAGS)
2602 AC_SUBST(DBUS_LIBS)
2603 AC_SUBST(DBUS_OBJ)
2604
2605 dnl GSettings has been tested under GNU/Linux only.
2606 HAVE_GSETTINGS=no
2607 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2608    EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2609    if test "$HAVE_GSETTINGS" = "yes"; then
2610       old_CFLAGS=$CFLAGS
2611       CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2612       old_LIBS=$LIBS
2613       LIBS="$LIBS $GSETTINGS_LIBS"
2614       AC_MSG_CHECKING([whether GSettings is in gio])
2615       AC_LINK_IFELSE(
2616          [AC_LANG_PROGRAM(
2617              [[/* Check that gsettings really is present.  */
2618              #include <glib-object.h>
2619              #include <gio/gio.h>
2620              ]],
2621              [[
2622                GSettings *settings;
2623                GVariant *val = g_settings_get_value (settings, "");
2624              ]])],
2625          [], HAVE_GSETTINGS=no)
2626       AC_MSG_RESULT([$HAVE_GSETTINGS])
2627
2628       if test "$HAVE_GSETTINGS" = "yes"; then
2629         AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2630         SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2631         SETTINGS_LIBS="$GSETTINGS_LIBS"
2632       fi
2633       CFLAGS=$old_CFLAGS
2634       LIBS=$old_LIBS
2635    fi
2636 fi
2637
2638 dnl GConf has been tested under GNU/Linux only.
2639 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2640 HAVE_GCONF=no
2641 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" = "yes"; then
2642    EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2643    if test "$HAVE_GCONF" = yes; then
2644       AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2645       dnl Newer GConf doesn't link with g_objects, so this is not defined.
2646       SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2647       SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2648    fi
2649 fi
2650
2651 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2652     EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2653     if test "$HAVE_GOBJECT" = "yes"; then
2654        SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2655        SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2656     fi
2657     SAVE_CFLAGS="$CFLAGS"
2658     SAVE_LIBS="$LIBS"
2659     CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2660     LIBS="$SETTINGS_LIBS $LIBS"
2661     CFLAGS="$SAVE_CFLAGS"
2662     LIBS="$SAVE_LIBS"
2663 fi
2664 AC_SUBST(SETTINGS_CFLAGS)
2665 AC_SUBST(SETTINGS_LIBS)
2666
2667
2668 dnl SELinux is available for GNU/Linux only.
2669 HAVE_LIBSELINUX=no
2670 LIBSELINUX_LIBS=
2671 if test "${with_selinux}" = "yes"; then
2672    AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2673    if test "$HAVE_LIBSELINUX" = yes; then
2674       AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2675       LIBSELINUX_LIBS=-lselinux
2676    fi
2677 fi
2678 AC_SUBST(LIBSELINUX_LIBS)
2679
2680 HAVE_GNUTLS=no
2681 if test "${with_gnutls}" = "yes" ; then
2682   EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.6.6],
2683     [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2684   if test "${HAVE_GNUTLS}" = "yes"; then
2685     AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2686     EMACS_CHECK_MODULES([LIBGNUTLS3], [gnutls >= 3.0.0],
2687       [AC_DEFINE(HAVE_GNUTLS3, 1, [Define if using GnuTLS v3.])], [])
2688   fi
2689
2690   # Windows loads GnuTLS dynamically
2691   if test "${opsys}" = "mingw32"; then
2692     LIBGNUTLS_LIBS=
2693   fi
2694 fi
2695
2696 AC_SUBST(LIBGNUTLS_LIBS)
2697 AC_SUBST(LIBGNUTLS_CFLAGS)
2698
2699 NOTIFY_OBJ=
2700 NOTIFY_SUMMARY=no
2701
2702 dnl MS Windows native file monitor is available for mingw32 only.
2703 case $with_file_notification,$opsys in
2704   w32,cygwin)
2705     AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2706     this is only supported on MS-Windows native and MinGW32 builds.
2707     Consider using gfile instead.])
2708     ;;
2709   w32,* | yes,mingw32)
2710     AC_CHECK_HEADER(windows.h)
2711     if test "$ac_cv_header_windows_h" = yes ; then
2712        AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2713        NOTIFY_OBJ=w32notify.o
2714        NOTIFY_SUMMARY="yes (w32)"
2715     fi ;;
2716 esac
2717
2718 dnl inotify is available only on GNU/Linux.
2719 case $with_file_notification,$NOTIFY_OBJ in
2720   inotify, | yes,)
2721     AC_CHECK_HEADER(sys/inotify.h)
2722     if test "$ac_cv_header_sys_inotify_h" = yes ; then
2723         AC_CHECK_FUNC(inotify_init1)
2724         if test "$ac_cv_func_inotify_init1" = yes; then
2725           AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2726           NOTIFY_OBJ=inotify.o
2727           NOTIFY_SUMMARY="yes -lglibc (inotify)"
2728        fi
2729     fi ;;
2730 esac
2731
2732 dnl kqueue is available on BSD-like systems.
2733 case $with_file_notification,$NOTIFY_OBJ in
2734   kqueue,* | yes,)
2735     EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2736     if test "$HAVE_KQUEUE" = "yes"; then
2737        AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2738        CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2739        NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2740        NOTIFY_LIBS=$KQUEUE_LIBS
2741        NOTIFY_OBJ=kqueue.o
2742        NOTIFY_SUMMARY="yes -lkqueue"
2743     else
2744        AC_SEARCH_LIBS(kqueue, [])
2745        if test "$ac_cv_search_kqueue" != no; then
2746          AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2747          NOTIFY_OBJ=kqueue.o
2748          NOTIFY_SUMMARY="yes (kqueue)"
2749        fi
2750     fi ;;
2751 esac
2752
2753 dnl g_file_monitor exists since glib 2.18.  G_FILE_MONITOR_EVENT_MOVED
2754 dnl has been added in glib 2.24.  It has been tested under
2755 dnl GNU/Linux only.
2756 case $with_file_notification,$NOTIFY_OBJ in
2757   gfile,* | yes,)
2758     if test "${HAVE_NS}" = yes; then
2759        AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2760 Consider kqueue instead.])
2761     else
2762        EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2763        if test "$HAVE_GFILENOTIFY" = "yes"; then
2764           AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2765           NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2766           NOTIFY_LIBS=$GFILENOTIFY_LIBS
2767           NOTIFY_OBJ=gfilenotify.o
2768           NOTIFY_SUMMARY="yes -lgio (gfile)"
2769        fi
2770     fi ;;
2771 esac
2772
2773 case $with_file_notification,$NOTIFY_OBJ in
2774   yes,* | no,* | *,?*) ;;
2775   *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2776 esac
2777
2778 if test -n "$NOTIFY_OBJ"; then
2779    AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2780 fi
2781 AC_SUBST(NOTIFY_CFLAGS)
2782 AC_SUBST(NOTIFY_LIBS)
2783 AC_SUBST(NOTIFY_OBJ)
2784
2785 dnl Do not put whitespace before the #include statements below.
2786 dnl Older compilers (eg sunos4 cc) choke on it.
2787 HAVE_XAW3D=no
2788 LUCID_LIBW=
2789 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2790   if test "$with_xaw3d" != no; then
2791     AC_CACHE_VAL(emacs_cv_xaw3d,
2792     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2793 #include <X11/Intrinsic.h>
2794 #include <X11/Xaw3d/Simple.h>]],
2795       [[]])],
2796       [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2797                     emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2798       emacs_cv_xaw3d=no)])
2799   else
2800     emacs_cv_xaw3d=no
2801   fi
2802   if test $emacs_cv_xaw3d = yes; then
2803     AC_MSG_CHECKING(for xaw3d)
2804     AC_MSG_RESULT([yes; using Lucid toolkit])
2805     USE_X_TOOLKIT=LUCID
2806     HAVE_XAW3D=yes
2807     LUCID_LIBW=-lXaw3d
2808     AC_DEFINE(HAVE_XAW3D, 1,
2809               [Define to 1 if you have the Xaw3d library (-lXaw3d).])
2810   else
2811     AC_MSG_CHECKING(for xaw3d)
2812     AC_MSG_RESULT(no)
2813     AC_MSG_CHECKING(for libXaw)
2814     AC_CACHE_VAL(emacs_cv_xaw,
2815     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2816 #include <X11/Intrinsic.h>
2817 #include <X11/Xaw/Simple.h>]],
2818       [[]])],
2819       emacs_cv_xaw=yes,
2820       emacs_cv_xaw=no)])
2821     if test $emacs_cv_xaw = yes; then
2822       AC_MSG_RESULT([yes; using Lucid toolkit])
2823       USE_X_TOOLKIT=LUCID
2824       LUCID_LIBW=-lXaw
2825     elif test x"${USE_X_TOOLKIT}" = xLUCID; then
2826       AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
2827     else
2828       AC_MSG_ERROR([No X toolkit could be found.
2829 If you are sure you want Emacs compiled without an X toolkit, pass
2830   --with-x-toolkit=no
2831 to configure.  Otherwise, install the development libraries for the toolkit
2832 that you want to use (e.g. Gtk+) and re-run configure.])
2833     fi
2834   fi
2835 fi
2836
2837 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
2838
2839 LIBXTR6=
2840 LIBXMU=
2841 if test "${USE_X_TOOLKIT}" != "none"; then
2842   AC_MSG_CHECKING(X11 toolkit version)
2843   AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
2844   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
2845 [[#if XtSpecificationRelease < 6
2846 fail;
2847 #endif
2848 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
2849   HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
2850   if test $emacs_cv_x11_toolkit_version_6 = yes; then
2851     AC_MSG_RESULT(6 or newer)
2852     AC_DEFINE(HAVE_X11XTR6, 1,
2853               [Define to 1 if you have the X11R6 or newer version of Xt.])
2854     LIBXTR6="-lSM -lICE"
2855     case "$opsys" in
2856       ## Use libw.a along with X11R6 Xt.
2857       unixware) LIBXTR6="$LIBXTR6 -lw" ;;
2858     esac
2859   else
2860     AC_MSG_RESULT(before 6)
2861   fi
2862
2863 dnl If using toolkit, check whether libXmu.a exists.
2864 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
2865   OLDLIBS="$LIBS"
2866   if test x$HAVE_X11XTR6 = xyes; then
2867     OTHERLIBS='-lXt -lSM -lICE'
2868   else
2869     OTHERLIBS='-lXt'
2870   fi
2871   AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
2872   if test "X$LIBS" != "X$OLDLIBS"; then
2873     LIBXMU=$ac_cv_search_XmuConvertStandardSelection
2874   fi
2875   LIBS=$OLDLIBS
2876   dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
2877 fi
2878 AC_SUBST(LIBXTR6)
2879 AC_SUBST(LIBXMU)
2880
2881 LIBXP=
2882 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
2883   # OpenMotif may be installed in such a way on some GNU/Linux systems.
2884   if test -d /usr/include/openmotif; then
2885     CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
2886     emacs_cv_openmotif=yes
2887     case "$canonical" in
2888       x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
2889       test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
2890       ;;
2891       *)
2892       test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
2893     esac
2894   else
2895     emacs_cv_openmotif=no
2896   fi
2897   AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
2898   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
2899     [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
2900 int x = 5;
2901 #else
2902 Motif version prior to 2.1.
2903 #endif]])],
2904     emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
2905   if test $emacs_cv_motif_version_2_1 = yes; then
2906     AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
2907     if test x$emacs_cv_openmotif = xyes; then
2908       REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
2909     fi
2910   else
2911     AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
2912     # We put this in CFLAGS temporarily to precede other -I options
2913     # that might be in CFLAGS temporarily.
2914     # We put this in CPPFLAGS where it precedes the other -I options.
2915     OLD_CPPFLAGS=$CPPFLAGS
2916     OLD_CFLAGS=$CFLAGS
2917     CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
2918     CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
2919     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
2920       [[int x = 5;]])],
2921       emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
2922     if test $emacs_cv_lesstif = yes; then
2923       # Make sure this -I option remains in CPPFLAGS after it is set
2924       # back to REAL_CPPFLAGS.
2925       # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
2926       # have those other -I options anyway.  Ultimately, having this
2927       # directory ultimately in CPPFLAGS will be enough.
2928       REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
2929       LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
2930     else
2931       CFLAGS=$OLD_CFLAGS
2932       CPPFLAGS=$OLD_CPPFLAGS
2933     fi
2934   fi
2935   AC_CHECK_HEADER([Xm/BulletinB.h], [],
2936     [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
2937 fi
2938
2939 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
2940 dnl using Motif or Xaw3d is available, and unless
2941 dnl --with-toolkit-scroll-bars=no was specified.
2942
2943 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
2944             [Define to 1 if we should use toolkit scroll bars.])dnl
2945 USE_TOOLKIT_SCROLL_BARS=no
2946 if test "${with_toolkit_scroll_bars}" != "no"; then
2947   if test "${USE_X_TOOLKIT}" != "none"; then
2948     if test "${USE_X_TOOLKIT}" = "MOTIF"; then
2949       AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2950       HAVE_XAW3D=no
2951       USE_TOOLKIT_SCROLL_BARS=yes
2952     elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
2953       AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2954       USE_TOOLKIT_SCROLL_BARS=yes
2955     fi
2956   elif test "${HAVE_GTK}" = "yes"; then
2957     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2958     USE_TOOLKIT_SCROLL_BARS=yes
2959   elif test "${HAVE_NS}" = "yes"; then
2960     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2961     USE_TOOLKIT_SCROLL_BARS=yes
2962   elif test "${HAVE_W32}" = "yes"; then
2963     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2964     USE_TOOLKIT_SCROLL_BARS=yes
2965   fi
2966 fi
2967
2968 dnl See if XIM is available.
2969 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2970           #include <X11/Xlib.h>
2971           #include <X11/Xresource.h>]],
2972          [[XIMProc  callback;]])],
2973          [HAVE_XIM=yes
2974          AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
2975          HAVE_XIM=no)
2976
2977 dnl '--with-xim' now controls only the initial value of use_xim at run time.
2978
2979 if test "${with_xim}" != "no"; then
2980   AC_DEFINE(USE_XIM, 1,
2981             [Define to 1 if we should use XIM, if it is available.])
2982 fi
2983
2984
2985 if test "${HAVE_XIM}" != "no"; then
2986   late_CFLAGS=$CFLAGS
2987   if test "$GCC" = yes; then
2988     CFLAGS="$CFLAGS --pedantic-errors"
2989   fi
2990   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2991 #include <X11/Xlib.h>
2992 #include <X11/Xresource.h>]],
2993 [[Display *display;
2994 XrmDatabase db;
2995 char *res_name;
2996 char *res_class;
2997 XIMProc  callback;
2998 XPointer *client_data;
2999 #ifndef __GNUC__
3000 /* If we're not using GCC, it's probably not XFree86, and this is
3001    probably right, but we can't use something like --pedantic-errors.  */
3002 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3003                                            char*, XIMProc, XPointer*);
3004 #endif
3005 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3006    client_data);]])],
3007     [emacs_cv_arg6_star=yes])
3008   AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3009          [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3010 either XPointer or XPointer*.])dnl
3011   if test "$emacs_cv_arg6_star" = yes; then
3012     AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3013   else
3014     AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3015   fi
3016   CFLAGS=$late_CFLAGS
3017 fi
3018
3019 ### Start of font-backend (under any platform) section.
3020 # (nothing here yet -- this is a placeholder)
3021 ### End of font-backend (under any platform) section.
3022
3023 ### Start of font-backend (under X11) section.
3024 if test "${HAVE_X11}" = "yes"; then
3025     ## Use -lXft if available, unless '--with-xft=no'.
3026     HAVE_XFT=maybe
3027     if test "x${with_x}" = "xno"; then
3028       with_xft="no";
3029     fi
3030
3031     if test "$with_xft" != no; then
3032       EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3033       with_xft=$HAVE_FONTCONFIG
3034     fi
3035
3036     if test "x${with_xft}" != "xno"; then
3037
3038       EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3039       ## Because xftfont.c uses XRenderQueryExtension, we also
3040       ## need to link to -lXrender.
3041       HAVE_XRENDER=no
3042       AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3043       if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3044         OLD_CPPFLAGS="$CPPFLAGS"
3045         OLD_CFLAGS="$CFLAGS"
3046         OLD_LIBS="$LIBS"
3047         CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3048         CFLAGS="$CFLAGS $XFT_CFLAGS"
3049         XFT_LIBS="-lXrender $XFT_LIBS"
3050         LIBS="$XFT_LIBS $LIBS"
3051         AC_CHECK_HEADER(X11/Xft/Xft.h,
3052           AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3053           [[#include <X11/X.h>]])
3054
3055         if test "${HAVE_XFT}" = "yes"; then
3056           AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3057             AC_SUBST(XFT_LIBS)
3058           C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3059         fi                        # "${HAVE_XFT}" = "yes"
3060         CPPFLAGS=$OLD_CPPFLAGS
3061         CFLAGS=$OLD_CFLAGS
3062         LIBS=$OLD_LIBS
3063       fi                          # "$HAVE_XFT" != no
3064     fi                            # "x${with_xft}" != "xno"
3065
3066     ## We used to allow building with FreeType and without Xft.
3067     ## However, the ftx font backend driver is not in good shape.
3068     if test "$HAVE_XFT" != "yes"; then
3069        dnl For the "Does Emacs use" message at the end.
3070        HAVE_XFT=no
3071        HAVE_FREETYPE=no
3072     else
3073        dnl Strict linkers fail with
3074        dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3075        dnl if -lfreetype is not specified.
3076        dnl The following is needed to set FREETYPE_LIBS.
3077        EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3078
3079        test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3080     fi
3081
3082     HAVE_LIBOTF=no
3083     if test "${HAVE_FREETYPE}" = "yes"; then
3084       AC_DEFINE(HAVE_FREETYPE, 1,
3085                 [Define to 1 if using the freetype and fontconfig libraries.])
3086       if test "${with_libotf}" != "no"; then
3087         EMACS_CHECK_MODULES([LIBOTF], [libotf])
3088         if test "$HAVE_LIBOTF" = "yes"; then
3089           AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3090           AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3091                        HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3092                        HAVE_OTF_GET_VARIATION_GLYPHS=no)
3093           if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3094             AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3095                       [Define to 1 if libotf has OTF_get_variation_glyphs.])
3096           fi
3097         fi
3098       fi
3099     dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3100     dnl Does the new font backend require it, or can it work without it?
3101     fi
3102
3103     HAVE_M17N_FLT=no
3104     if test "${HAVE_LIBOTF}" = yes; then
3105       if test "${with_m17n_flt}" != "no"; then
3106         EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3107         if test "$HAVE_M17N_FLT" = "yes"; then
3108           AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3109         fi
3110       fi
3111     fi
3112 else
3113     HAVE_XFT=no
3114     HAVE_FREETYPE=no
3115     HAVE_LIBOTF=no
3116     HAVE_M17N_FLT=no
3117 fi
3118
3119 ### End of font-backend (under X11) section.
3120
3121 AC_SUBST(FREETYPE_CFLAGS)
3122 AC_SUBST(FREETYPE_LIBS)
3123 AC_SUBST(FONTCONFIG_CFLAGS)
3124 AC_SUBST(FONTCONFIG_LIBS)
3125 AC_SUBST(LIBOTF_CFLAGS)
3126 AC_SUBST(LIBOTF_LIBS)
3127 AC_SUBST(M17N_FLT_CFLAGS)
3128 AC_SUBST(M17N_FLT_LIBS)
3129
3130 USE_CAIRO=no
3131 if test "${HAVE_X11}" = "yes"; then
3132   if test "${with_cairo}" != "no"; then
3133     CAIRO_REQUIRED=1.12.0
3134     CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3135     PKG_CHECK_MODULES(CAIRO, $CAIRO_MODULE, USE_CAIRO=yes, :)
3136     if test $USE_CAIRO = yes; then
3137       AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3138     else
3139       AC_MSG_ERROR([cairo requested but not found.])
3140     fi
3141
3142     CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3143     LIBS="$LIBS $CAIRO_LIBS"
3144     AC_SUBST(CAIRO_CFLAGS)
3145     AC_SUBST(CAIRO_LIBS)
3146   fi
3147 fi
3148
3149 if test "${HAVE_X11}" = "yes"; then
3150   AC_CHECK_HEADER(X11/Xlib-xcb.h,
3151     AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3152   if test "${HAVE_XCB}" = "yes"; then
3153     AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3154     if test "${HAVE_X11_XCB}" = "yes"; then
3155       AC_DEFINE(USE_XCB, 1,
3156 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3157    X11/XCB programming.])
3158       XCB_LIBS="-lX11-xcb -lxcb"
3159       AC_SUBST(XCB_LIBS)
3160     fi
3161   fi
3162 fi
3163
3164 ### Use -lXpm if available, unless '--with-xpm=no'.
3165 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3166 ### In the Cygwin-w32 build, we need to use /usr/include/noX/X11/xpm.h
3167 ### rather than /usr/include/X11/xpm.h, so we set CPPFLAGS (and
3168 ### LDFLAGS) accordingly.
3169 HAVE_XPM=no
3170 LIBXPM=
3171 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3172   if test "${with_xpm}" != "no"; then
3173     SAVE_CPPFLAGS="$CPPFLAGS"
3174     SAVE_LDFLAGS="$LDFLAGS"
3175     CPPFLAGS="$CPPFLAGS -I/usr/include/noX"
3176     LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3177     AC_CHECK_HEADER(X11/xpm.h,
3178       [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3179     if test "${HAVE_XPM}" = "yes"; then
3180       AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3181       AC_EGREP_CPP(no_return_alloc_pixels,
3182       [#include "X11/xpm.h"
3183 #ifndef XpmReturnAllocPixels
3184 no_return_alloc_pixels
3185 #endif
3186       ], HAVE_XPM=no, HAVE_XPM=yes)
3187
3188       if test "${HAVE_XPM}" = "yes"; then
3189         REAL_CPPFLAGS="$REAL_CPPFLAGS -I/usr/include/noX"
3190         AC_MSG_RESULT(yes)
3191       else
3192         AC_MSG_RESULT(no)
3193         CPPFLAGS="$SAVE_CPPFLAGS"
3194         LDFLAGS="$SAVE_LDFLAGS"
3195       fi
3196     fi
3197   fi
3198
3199   if test "${HAVE_XPM}" = "yes"; then
3200     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3201     LIBXPM=-lXpm
3202   fi
3203 fi
3204
3205 if test "${HAVE_X11}" = "yes"; then
3206   dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3207   test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3208
3209   if test "${with_xpm}" != "no"; then
3210     AC_CHECK_HEADER(X11/xpm.h,
3211       [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3212     if test "${HAVE_XPM}" = "yes"; then
3213       AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3214       AC_EGREP_CPP(no_return_alloc_pixels,
3215       [#include "X11/xpm.h"
3216 #ifndef XpmReturnAllocPixels
3217 no_return_alloc_pixels
3218 #endif
3219       ], HAVE_XPM=no, HAVE_XPM=yes)
3220
3221       if test "${HAVE_XPM}" = "yes"; then
3222         AC_MSG_RESULT(yes)
3223       else
3224         AC_MSG_RESULT(no)
3225       fi
3226     fi
3227   fi
3228
3229   if test "${HAVE_XPM}" = "yes"; then
3230     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3231     LIBXPM=-lXpm
3232   elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3233     dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3234     LIBXPM=-lXpm
3235   fi
3236 fi
3237
3238 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3239 ### slightly different requirements wrt image libraries (it doesn't
3240 ### use -lXpm because it loads the xpm shared library dynamically at
3241 ### run time).
3242 if test "${opsys}" = "mingw32"; then
3243   if test "${with_xpm}" != "no"; then
3244     AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3245 #define FOR_MSW 1])
3246   fi
3247
3248   if test "${HAVE_XPM}" = "yes"; then
3249     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3250   fi
3251 fi
3252
3253 AC_SUBST(LIBXPM)
3254
3255 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3256 HAVE_JPEG=no
3257 LIBJPEG=
3258 if test "${with_jpeg}" != "no"; then
3259   AC_CACHE_CHECK([for jpeglib 6b or later],
3260     [emacs_cv_jpeglib],
3261     [OLD_LIBS=$LIBS
3262      for emacs_cv_jpeglib in yes -ljpeg no; do
3263        case $emacs_cv_jpeglib in
3264          yes) ;;
3265          no) break;;
3266          *) LIBS="$LIBS $emacs_cv_jpeglib";;
3267        esac
3268        AC_LINK_IFELSE(
3269          [AC_LANG_PROGRAM(
3270             [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision.  */
3271               #include <stdio.h> /* jpeglib.h needs FILE and size_t.  */
3272               #include <jpeglib.h>
3273               #include <jerror.h>
3274               char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3275               struct jpeg_decompress_struct cinfo;
3276             ]],
3277             [[
3278               jpeg_create_decompress (&cinfo);
3279               WARNMS (&cinfo, JWRN_JPEG_EOF);
3280               jpeg_destroy_decompress (&cinfo);
3281             ]])],
3282          [emacs_link_ok=yes],
3283          [emacs_link_ok=no])
3284        LIBS=$OLD_LIBS
3285        test $emacs_link_ok = yes && break
3286      done])
3287   if test "$emacs_cv_jpeglib" != no; then
3288     HAVE_JPEG=yes
3289     AC_DEFINE([HAVE_JPEG], 1,
3290       [Define to 1 if you have the jpeg library (typically -ljpeg).])
3291     ### mingw32 doesn't use -ljpeg, since it loads the library
3292     ### dynamically when needed, and doesn't want a run-time
3293     ### dependency on the jpeglib DLL.
3294     test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3295     && LIBJPEG=$emacs_cv_jpeglib
3296   fi
3297 fi
3298 AC_SUBST(LIBJPEG)
3299
3300 HAVE_ZLIB=no
3301 LIBZ=
3302 if test "${with_zlib}" != "no"; then
3303   OLIBS=$LIBS
3304   AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3305   LIBS=$OLIBS
3306   case $ac_cv_search_inflateEnd in
3307     -*) LIBZ=$ac_cv_search_inflateEnd ;;
3308   esac
3309 fi
3310 if test "${HAVE_ZLIB}" = "yes"; then
3311   AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3312   ### mingw32 doesn't use -lz, since it loads the library dynamically.
3313   if test "${opsys}" = "mingw32"; then
3314      LIBZ=
3315   fi
3316 fi
3317 AC_SUBST(LIBZ)
3318
3319 ### Dynamic modules support
3320 LIBMODULES=
3321 HAVE_MODULES=no
3322 MODULES_OBJ=
3323 MODULES_SUFFIX=
3324 if test "${with_modules}" != "no"; then
3325   if test "$opsys" = "gnu-linux"; then
3326     LIBMODULES="-ldl"
3327     MODULES_SUFFIX=".so"
3328     HAVE_MODULES=yes
3329   elif test "$opsys" = "cygwin"; then
3330     MODULES_SUFFIX=".dll"
3331     HAVE_MODULES=yes
3332   elif test "$opsys" = "darwin"; then
3333     MODULES_SUFFIX=".so"
3334     HAVE_MODULES=yes
3335   elif test "$opsys" = "mingw32"; then
3336     MODULES_SUFFIX=".dll"
3337     HAVE_MODULES=yes
3338   else
3339     # BSD system have dlopen in the libc
3340     AC_CHECK_FUNC(dlopen, [MODULES_SUFFIX=".so"]
3341                           [HAVE_MODULES=yes], [])
3342   fi
3343
3344   if test "${HAVE_MODULES}" = no; then
3345     AC_MSG_ERROR([Dynamic modules are not supported on your system])
3346   else
3347     SAVE_LIBS=$LIBS
3348     LIBS="$LIBS $LIBMODULES"
3349     AC_CHECK_FUNCS([dlfunc])
3350     LIBS=$SAVE_LIBS
3351   fi
3352 fi
3353
3354 if test "${HAVE_MODULES}" = yes; then
3355    MODULES_OBJ="dynlib.o emacs-module.o"
3356    AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3357    AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3358      [System extension for dynamic libraries])
3359 fi
3360 AC_SUBST(MODULES_OBJ)
3361 AC_SUBST(LIBMODULES)
3362 AC_CHECK_FUNCS(dladdr)
3363
3364 ### Use -lpng if available, unless '--with-png=no'.
3365 HAVE_PNG=no
3366 LIBPNG=
3367 PNG_CFLAGS=
3368 if test "${NS_IMPL_COCOA}" = yes; then
3369   : # Nothing to do
3370 elif test "${with_png}" != no; then
3371   # mingw32 loads the library dynamically.
3372   if test "$opsys" = mingw32; then
3373     AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3374   elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3375     AC_MSG_CHECKING([for png])
3376     png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3377     png_libs=`(libpng-config --libs) 2>&AS_MESSAGE_LOG_FD` || {
3378       # libpng-config does not work; configure by hand.
3379       # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3380       # in /usr/include/libpng.
3381       if test -r /usr/include/libpng/png.h &&
3382          test ! -r /usr/include/png.h; then
3383         png_cflags=-I/usr/include/libpng
3384       else
3385         png_cflags=
3386       fi
3387       png_libs='-lpng'
3388     }
3389     SAVE_CFLAGS=$CFLAGS
3390     SAVE_LIBS=$LIBS
3391     CFLAGS="$CFLAGS $png_cflags"
3392     LIBS="$png_libs -lz -lm $LIBS"
3393     AC_LINK_IFELSE(
3394       [AC_LANG_PROGRAM([[#include <png.h>]],
3395          [[return !png_get_channels (0, 0);]])],
3396       [HAVE_PNG=yes
3397        PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3398        LIBPNG=$png_libs
3399        # $LIBPNG requires explicit -lz in some cases.
3400        # We don't know what those cases are, exactly, so play it safe and
3401        # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3402        if test -n "$LIBPNG" && test -z "$LIBZ"; then
3403          LIBPNG="$LIBPNG -lz"
3404        fi])
3405     CFLAGS=$SAVE_CFLAGS
3406     LIBS=$SAVE_LIBS
3407     AC_MSG_RESULT([$HAVE_PNG])
3408   fi
3409 fi
3410 if test $HAVE_PNG = yes; then
3411   AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3412
3413   SAVE_CFLAGS=$CFLAGS
3414   CFLAGS="$CFLAGS $PNG_CFLAGS"
3415   AC_CHECK_DECL([png_longjmp],
3416     [],
3417     [AC_DEFINE([PNG_DEPSTRUCT], [],
3418        [Define to empty to suppress deprecation warnings when building
3419         with --enable-gcc-warnings and with libpng versions before 1.5,
3420         which lack png_longjmp.])],
3421     [[#include <png.h>
3422     ]])
3423   CFLAGS=$SAVE_CFLAGS
3424 fi
3425 AC_SUBST(LIBPNG)
3426 AC_SUBST(PNG_CFLAGS)
3427
3428 ### Use -ltiff if available, unless '--with-tiff=no'.
3429 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3430 HAVE_TIFF=no
3431 LIBTIFF=
3432 if test "${opsys}" = "mingw32"; then
3433   if test "${with_tiff}" != "no"; then
3434     AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3435   fi
3436   if test "${HAVE_TIFF}" = "yes"; then
3437     AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3438   fi
3439 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3440   if test "${with_tiff}" != "no"; then
3441     AC_CHECK_HEADER(tiffio.h,
3442       [tifflibs="-lz -lm"
3443       # At least one tiff package requires the jpeg library.
3444       if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3445       AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3446   fi
3447
3448   if test "${HAVE_TIFF}" = "yes"; then
3449     AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3450     dnl FIXME -lz -lm, as per libpng?
3451     LIBTIFF=-ltiff
3452   fi
3453 fi
3454 AC_SUBST(LIBTIFF)
3455
3456 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3457 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3458 HAVE_GIF=no
3459 LIBGIF=
3460 if test "${opsys}" = "mingw32"; then
3461   if test "${with_gif}" != "no"; then
3462     AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3463   fi
3464   if test "${HAVE_GIF}" = "yes"; then
3465     AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3466   fi
3467 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3468         || test "${HAVE_W32}" = "yes"; then
3469   AC_CHECK_HEADER(gif_lib.h,
3470 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3471 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3472     [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3473         [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3474
3475   if test "$HAVE_GIF" = yes; then
3476     LIBGIF=-lgif
3477   elif test "$HAVE_GIF" = maybe; then
3478 # If gif_lib.h but no libgif, try libungif.
3479     AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3480     test "$HAVE_GIF" = yes && LIBGIF=-lungif
3481   fi
3482
3483   if test "${HAVE_GIF}" = "yes"; then
3484     AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3485   fi
3486 fi
3487 AC_SUBST(LIBGIF)
3488
3489 dnl Check for required libraries.
3490 if test "${HAVE_X11}" = "yes"; then
3491   MISSING=""
3492   WITH_NO=""
3493   test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3494     MISSING="libXpm" && WITH_NO="--with-xpm=no"
3495   test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3496     MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3497   test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3498     MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3499   test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3500     MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3501   test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3502     MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3503
3504   if test "X${MISSING}" != X; then
3505     AC_MSG_ERROR([The following required libraries were not found:
3506     $MISSING
3507 Maybe some development libraries/packages are missing?
3508 If you don't want to link with them give
3509     $WITH_NO
3510 as options to configure])
3511   fi
3512 fi
3513
3514 ### Use -lgpm if available, unless '--with-gpm=no'.
3515 HAVE_GPM=no
3516 LIBGPM=
3517 if test "${with_gpm}" != "no"; then
3518   AC_CHECK_HEADER(gpm.h,
3519     [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3520
3521   if test "${HAVE_GPM}" = "yes"; then
3522     AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3523     LIBGPM=-lgpm
3524   fi
3525 fi
3526 AC_SUBST(LIBGPM)
3527
3528 dnl Check for malloc/malloc.h on darwin
3529 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3530
3531 GNUSTEP_CFLAGS=
3532 ### Use NeXTstep API to implement GUI.
3533 if test "${HAVE_NS}" = "yes"; then
3534   AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on Mac OS X.])
3535   if test "${NS_IMPL_COCOA}" = "yes"; then
3536     AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under MacOS X.])
3537   fi
3538   if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3539     AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3540     if test $NS_GNUSTEP_CONFIG != yes; then
3541       # See also .m.o rule in src/Makefile.in.  */
3542       # FIXME: are all these flags really needed?  Document here why.  */
3543       GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3544       ## Extra CFLAGS applied to src/*.m files.
3545       GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3546     fi
3547   fi
3548   OTHER_FILES=ns-app
3549 fi
3550
3551 ### Use session management (-lSM -lICE) if available
3552 HAVE_X_SM=no
3553 LIBXSM=
3554 if test "${HAVE_X11}" = "yes"; then
3555   AC_CHECK_HEADER(X11/SM/SMlib.h,
3556     [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3557
3558   if test "${HAVE_X_SM}" = "yes"; then
3559     AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3560     LIBXSM="-lSM -lICE"
3561   fi
3562 fi
3563 AC_SUBST(LIBXSM)
3564
3565 ### Use XRandr (-lXrandr) if available
3566 HAVE_XRANDR=no
3567 if test "${HAVE_X11}" = "yes"; then
3568   XRANDR_REQUIRED=1.2.2
3569   XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3570   EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3571   if test $HAVE_XRANDR = no; then
3572     # Test old way in case pkg-config doesn't have it (older machines).
3573     # Include Xrender.h by hand to work around bug in older Xrandr.h
3574     # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3575     AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3576       [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3577       [], [AC_INCLUDES_DEFAULT
3578 #include <X11/extensions/Xrender.h>])
3579     if test $HAVE_XRANDR = yes; then
3580       XRANDR_LIBS=-lXrandr
3581     fi
3582   fi
3583   if test $HAVE_XRANDR = yes; then
3584     SAVE_CFLAGS="$CFLAGS"
3585     SAVE_LIBS="$LIBS"
3586     CFLAGS="$XRANDR_CFLAGS $CFLAGS"
3587     LIBS="$XRANDR_LIBS $LIBS"
3588     AC_CHECK_FUNCS(XRRGetOutputPrimary XRRGetScreenResourcesCurrent)
3589     CFLAGS="$SAVE_CFLAGS"
3590     LIBS="$SAVE_LIBS"
3591
3592     AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3593   fi
3594 fi
3595 AC_SUBST(XRANDR_CFLAGS)
3596 AC_SUBST(XRANDR_LIBS)
3597
3598 ### Use Xinerama (-lXinerama) if available
3599 HAVE_XINERAMA=no
3600 if test "${HAVE_X11}" = "yes"; then
3601   XINERAMA_REQUIRED=1.0.2
3602   XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3603   EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3604   if test $HAVE_XINERAMA = no; then
3605     # Test old way in case pkg-config doesn't have it (older machines).
3606     AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3607       [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3608     if test $HAVE_XINERAMA = yes; then
3609       XINERAMA_LIBS=-lXinerama
3610     fi
3611   fi
3612   if test $HAVE_XINERAMA = yes; then
3613     AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3614   fi
3615 fi
3616 AC_SUBST(XINERAMA_CFLAGS)
3617 AC_SUBST(XINERAMA_LIBS)
3618
3619 ### Use Xfixes (-lXfixes) if available
3620 HAVE_XFIXES=no
3621 if test "${HAVE_X11}" = "yes"; then
3622   XFIXES_REQUIRED=4.0.0
3623   XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3624   EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3625   if test $HAVE_XFIXES = no; then
3626     # Test old way in case pkg-config doesn't have it (older machines).
3627     AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3628       [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3629     if test $HAVE_XFIXES = yes; then
3630       XFIXES_LIBS=-lXfixes
3631     fi
3632   fi
3633   if test $HAVE_XFIXES = yes; then
3634     AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3635   fi
3636 fi
3637 AC_SUBST(XFIXES_CFLAGS)
3638 AC_SUBST(XFIXES_LIBS)
3639
3640 ### Use libxml (-lxml2) if available
3641 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3642 HAVE_LIBXML2=no
3643 if test "${with_xml2}" != "no"; then
3644   ### I'm not sure what the version number should be, so I just guessed.
3645   EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3646   # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3647   if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3648     SAVE_CPPFLAGS="$CPPFLAGS"
3649     if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3650       dnl /usr/include is not found.  Try Xcode SDK dir if it is sane.
3651       xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3652       case $xcsdkdir in
3653         *[[\\\"\#\$\&\'\`$am_lf\ \      ]]*)
3654         xcsdkdir="" ;;
3655       esac
3656     fi
3657     CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
3658     AC_CHECK_HEADER(libxml/HTMLparser.h,
3659       [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3660                      [#include <libxml/HTMLparser.h>])])
3661     CPPFLAGS="$SAVE_CPPFLAGS"
3662     if test "${HAVE_LIBXML2}" = "yes"; then
3663       LIBXML2_CFLAGS="-I'$xcsdkdir/usr/include/libxml2'"
3664       LIBXML2_LIBS="-lxml2"
3665     fi
3666   fi
3667   if test "${HAVE_LIBXML2}" = "yes"; then
3668     if test "${opsys}" != "mingw32"; then
3669       AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3670         [$LIBXML2_LIBS])
3671     else
3672       LIBXML2_LIBS=""
3673     fi
3674     if test "${HAVE_LIBXML2}" = "yes"; then
3675       AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3676     else
3677       LIBXML2_LIBS=""
3678       LIBXML2_CFLAGS=""
3679     fi
3680   fi
3681 fi
3682 AC_SUBST(LIBXML2_LIBS)
3683 AC_SUBST(LIBXML2_CFLAGS)
3684
3685 # If netdb.h doesn't declare h_errno, we must declare it by hand.
3686 # On MinGW, that is provided by nt/inc/sys/socket.h and w32.c.
3687 if test "${opsys}" = "mingw32"; then
3688   emacs_cv_netdb_declares_h_errno=yes
3689 fi
3690 AC_CACHE_CHECK(whether netdb declares h_errno,
3691                emacs_cv_netdb_declares_h_errno,
3692 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
3693   [[return h_errno;]])],
3694   emacs_cv_netdb_declares_h_errno=yes, emacs_cv_netdb_declares_h_errno=no)])
3695 if test $emacs_cv_netdb_declares_h_errno = yes; then
3696   AC_DEFINE(HAVE_H_ERRNO, 1, [Define to 1 if netdb.h declares h_errno.])
3697 fi
3698
3699 # Check for mail-locking functions in a "mail" library.  Probably this should
3700 # have the same check as for liblockfile below.
3701 AC_CHECK_LIB(mail, maillock, have_mail=yes, have_mail=no)
3702 if test $have_mail = yes; then
3703   LIBS_MAIL=-lmail
3704   AC_DEFINE(HAVE_LIBMAIL, 1, [Define to 1 if you have the 'mail' library (-lmail).])
3705
3706   OLD_LIBS=$LIBS
3707   LIBS="$LIBS_MAIL $LIBS"
3708   AC_CHECK_FUNCS(touchlock)
3709   LIBS=$OLD_LIBS
3710 else
3711   LIBS_MAIL=
3712 fi
3713 dnl Debian, at least:
3714 AC_CHECK_LIB(lockfile, maillock, have_lockfile=yes, have_lockfile=no)
3715 if test $have_lockfile = yes; then
3716    LIBS_MAIL=-llockfile
3717    AC_DEFINE(HAVE_LIBLOCKFILE, 1, [Define to 1 if you have the 'lockfile' library (-llockfile).])
3718 else
3719 # If we have the shared liblockfile, assume we must use it for mail
3720 # locking (e.g. Debian).  If we couldn't link against liblockfile
3721 # (no liblockfile.a installed), ensure that we don't need to.
3722   dnl This works for files generally, not just executables.
3723   dnl Should we look elsewhere for it?  Maybe examine /etc/ld.so.conf?
3724   AC_CHECK_PROG(liblockfile, liblockfile.so, yes, no,
3725                 /usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH)
3726   if test $ac_cv_prog_liblockfile = yes; then
3727     AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3728 This probably means that movemail could lose mail.
3729 There may be a 'development' package to install containing liblockfile.])
3730   fi
3731 fi
3732 AC_CHECK_HEADERS_ONCE(maillock.h)
3733 AC_SUBST(LIBS_MAIL)
3734
3735 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3736 ## interlock access to the mail spool.  The alternative is a lock file named
3737 ## /usr/spool/mail/$USER.lock.
3738 mail_lock=no
3739 case "$opsys" in
3740   aix4-2) mail_lock="lockf" ;;
3741
3742   gnu|freebsd|dragonfly|netbsd|openbsd|darwin|irix6-5) mail_lock="flock" ;;
3743
3744   ## On GNU/Linux systems, both methods are used by various mail programs.
3745   ## I assume most people are using newer mailers that have heard of flock.
3746   ## Change this if you need to.
3747   ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3748   ## configure gets the right answers, and that means *NOT* using flock.
3749   ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3750   ## for details." and then uses '#ifdef DEBIAN'.  Unfortunately the
3751   ## Debian maintainer hasn't provided a clean fix for Emacs.
3752   ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3753   ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3754   ## correct logic.  -- fx
3755   ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3756   ## liblockfile is a Free Software replacement for libmail, used on
3757   ## Debian systems and elsewhere. -rfr.
3758   gnu-*)
3759     mail_lock="flock"
3760     if test $have_mail = yes || test $have_lockfile = yes; then
3761       test $ac_cv_header_maillock_h = yes && mail_lock=no
3762     fi
3763     ;;
3764
3765   mingw32)
3766     mail_lock="none-needed" ;;
3767 esac
3768
3769 BLESSMAIL_TARGET=
3770 case "$mail_lock" in
3771   flock) AC_DEFINE(MAIL_USE_FLOCK, 1, [Define if the mailer uses flock to interlock the mail spool.]) ;;
3772
3773   lockf) AC_DEFINE(MAIL_USE_LOCKF, 1, [Define if the mailer uses lockf to interlock the mail spool.]) ;;
3774
3775   none-needed) ;;
3776
3777   *) BLESSMAIL_TARGET="need-blessmail" ;;
3778 esac
3779 AC_SUBST(BLESSMAIL_TARGET)
3780
3781 OLD_LIBS=$LIBS
3782 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
3783 AC_CHECK_FUNCS(accept4 fchdir gethostname \
3784 getrusage get_current_dir_name \
3785 lrand48 random rint \
3786 select getpagesize setlocale newlocale \
3787 getrlimit setrlimit shutdown getaddrinfo \
3788 pthread_sigmask strsignal setitimer \
3789 sendto recvfrom getsockname getpeername getifaddrs freeifaddrs \
3790 gai_strerror sync \
3791 getpwent endpwent getgrent endgrent \
3792 cfmakeraw cfsetspeed copysign __executable_start log2)
3793 LIBS=$OLD_LIBS
3794
3795 dnl No need to check for aligned_alloc and posix_memalign if using
3796 dnl gmalloc.o, as it supplies them, unless we're using hybrid_malloc.
3797 dnl Don't use these functions on Darwin as they are incompatible with
3798 dnl unexmacosx.c.
3799 if (test -z "$GMALLOC_OBJ" || test "$hybrid_malloc" = yes) \
3800   && test "$opsys" != darwin; then
3801   AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
3802 fi
3803
3804 dnl Cannot use AC_CHECK_FUNCS
3805 AC_CACHE_CHECK([for __builtin_unwind_init],
3806                emacs_cv_func___builtin_unwind_init,
3807 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
3808                 emacs_cv_func___builtin_unwind_init=yes,
3809                 emacs_cv_func___builtin_unwind_init=no)])
3810 if test $emacs_cv_func___builtin_unwind_init = yes; then
3811   AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
3812             [Define to 1 if you have the '__builtin_unwind_init' function.])
3813 fi
3814
3815 AC_CHECK_HEADERS_ONCE(sys/un.h)
3816
3817 AC_FUNC_FSEEKO
3818
3819 # UNIX98 PTYs.
3820 AC_CHECK_FUNCS(grantpt)
3821
3822 # PTY-related GNU extensions.
3823 AC_CHECK_FUNCS(getpt posix_openpt)
3824
3825 # Check this now, so that we will NOT find the above functions in ncurses.
3826 # That is because we have not set up to link ncurses in lib-src.
3827 # It's better to believe a function is not available
3828 # than to expect to find it in ncurses.
3829 # Also we need tputs and friends to be able to build at all.
3830 AC_MSG_CHECKING([for library containing tputs])
3831 # Run a test program that contains a call to tputs, a call that is
3832 # never executed.  This tests whether a pre-'main' dynamic linker
3833 # works with the library.  It's too much trouble to actually call
3834 # tputs in the test program, due to portability hassles.  When
3835 # cross-compiling, assume the test program will run if it links.
3836 AC_DEFUN([tputs_link_source], [
3837   AC_LANG_SOURCE(
3838      [[extern void tputs (const char *, int, int (*)(int));
3839        int main (int argc, char **argv)
3840        {
3841           if (argc == 10000)
3842             tputs (argv[0], 0, 0);
3843           return 0;
3844        }]])
3845 ])
3846 if test "${opsys}" = "mingw32"; then
3847   msg='none required'
3848 else
3849   # Maybe curses should be tried earlier?
3850   # See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
3851   for tputs_library in '' tinfo ncurses terminfo termcap curses; do
3852     OLIBS=$LIBS
3853     if test -z "$tputs_library"; then
3854       LIBS_TERMCAP=
3855       msg='none required'
3856     else
3857       LIBS_TERMCAP=-l$tputs_library
3858       msg=$LIBS_TERMCAP
3859       LIBS="$LIBS_TERMCAP $LIBS"
3860     fi
3861     AC_RUN_IFELSE([tputs_link_source], [], [msg=no],
3862       [AC_LINK_IFELSE([tputs_link_source], [], [msg=no])])
3863     LIBS=$OLIBS
3864     if test "X$msg" != Xno; then
3865       break
3866     fi
3867   done
3868 fi
3869 AC_MSG_RESULT([$msg])
3870 if test "X$msg" = Xno; then
3871   AC_MSG_ERROR([The required function 'tputs' was not found in any library.
3872 The following libraries were tried (in order):
3873   libtinfo, libncurses, libterminfo, libtermcap, libcurses
3874 Please try installing whichever of these libraries is most appropriate
3875 for your system, together with its header files.
3876 For example, a libncurses-dev(el) or similar package.])
3877 fi
3878
3879 ## Use termcap instead of terminfo?
3880 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
3881 TERMINFO=yes
3882 ## FIXME?  In the cases below where we unconditionally set
3883 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
3884 ## if that was found above to have tputs.
3885 ## Should we use the gnu* logic everywhere?
3886 case "$opsys" in
3887   ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
3888   ##  The ncurses library has been moved out of the System framework in
3889   ##  Mac OS X 10.2.  So if configure detects it, set the command-line
3890   ##  option to use it.
3891   darwin) LIBS_TERMCAP="-lncurses" ;;
3892
3893   gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
3894
3895   freebsd)
3896     AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
3897     AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
3898     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
3899 [[#if __FreeBSD_version < 400000
3900 fail;
3901 #endif
3902 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
3903
3904     AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
3905
3906     if test $emacs_cv_freebsd_terminfo = yes; then
3907       LIBS_TERMCAP="-lncurses"
3908     else
3909       TERMINFO=no
3910       LIBS_TERMCAP="-ltermcap"
3911     fi
3912     ;;
3913
3914   mingw32)
3915     TERMINFO=no
3916     LIBS_TERMCAP=
3917     ;;
3918
3919   netbsd)
3920     if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
3921       TERMINFO=no
3922       LIBS_TERMCAP="-ltermcap"
3923     fi
3924     ;;
3925
3926   openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
3927
3928   ## hpux: Make sure we get select from libc rather than from libcurses
3929   ##  because libcurses on HPUX 10.10 has a broken version of select.
3930   ##  We used to use -lc -lcurses, but this may be cleaner.
3931   ## FIXME?  But TERMINFO = yes on hpux (it used to be explicitly
3932   # set that way, now it uses the default).  Isn't this a contradiction?
3933   hpux*) LIBS_TERMCAP="-ltermcap" ;;
3934
3935 esac
3936
3937 TERMCAP_OBJ=tparam.o
3938 if test $TERMINFO = yes; then
3939   AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
3940   TERMCAP_OBJ=terminfo.o
3941 fi
3942 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
3943   AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
3944 fi
3945 AC_SUBST(LIBS_TERMCAP)
3946 AC_SUBST(TERMCAP_OBJ)
3947
3948 # GNU/Linux-specific timer functions.
3949 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
3950   [AC_COMPILE_IFELSE(
3951      [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
3952                       ]],
3953                       [[timerfd_create (CLOCK_REALTIME,
3954                                         TFD_CLOEXEC | TFD_NONBLOCK);
3955                         timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
3956      [emacs_cv_have_timerfd=yes],
3957      [emacs_cv_have_timerfd=no])])
3958 if test "$emacs_cv_have_timerfd" = yes; then
3959   AC_DEFINE([HAVE_TIMERFD], 1,
3960     [Define to 1 if timerfd functions are supported as in GNU/Linux.])
3961 fi
3962
3963 # Alternate stack for signal handlers.
3964 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
3965                [emacs_cv_alternate_stack],
3966   [AC_COMPILE_IFELSE(
3967      [AC_LANG_PROGRAM([[#include <signal.h>
3968                       ]],
3969                       [[stack_t ss;
3970                         struct sigaction sa;
3971                         ss.ss_sp = malloc (SIGSTKSZ);
3972                         ss.ss_size = SIGSTKSZ;
3973                         sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
3974                         sigaltstack (&ss, 0);
3975                         sigaction (SIGSEGV, &sa, 0);]])],
3976      [emacs_cv_alternate_stack=yes],
3977      [emacs_cv_alternate_stack=no])])
3978
3979 # Do we have res_init, for detecting changes in /etc/resolv.conf?
3980 # On Darwin, res_init appears not to be useful: see bug#562 and
3981 # http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg01467.html
3982 resolv=no
3983
3984 if test $opsys != darwin; then
3985
3986   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
3987 #include <arpa/nameser.h>
3988 #include <resolv.h>]],
3989     [[return res_init();]])],
3990     have_res_init=yes, have_res_init=no)
3991   if test "$have_res_init" = no; then
3992     OLIBS="$LIBS"
3993     LIBS="$LIBS -lresolv"
3994     AC_MSG_CHECKING(for res_init with -lresolv)
3995     AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
3996 #include <arpa/nameser.h>
3997 #include <resolv.h>]],
3998       [[return res_init();]])],
3999       have_res_init=yes, have_res_init=no)
4000     AC_MSG_RESULT($have_res_init)
4001     if test "$have_res_init" = yes ; then
4002       resolv=yes
4003     fi
4004     LIBS="$OLIBS"
4005   fi
4006
4007   if test "$have_res_init" = yes; then
4008     AC_DEFINE(HAVE_RES_INIT, 1, [Define to 1 if res_init is available.])
4009   fi
4010 fi                              dnl !darwin
4011
4012 # Do we need the Hesiod library to provide the support routines?
4013 dnl FIXME?  Should we be skipping this on Darwin too?
4014 LIBHESIOD=
4015 if test "$with_hesiod" != no ; then
4016   # Don't set $LIBS here -- see comments above.  FIXME which comments?
4017   AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4018      [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4019                   [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4020   if test "$resolv" = yes ; then
4021     RESOLVLIB=-lresolv
4022   else
4023     RESOLVLIB=
4024   fi
4025   AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4026         hesiod=yes, :, $RESOLVLIB)])
4027
4028   if test x"$hesiod" = xyes; then
4029     LIBHESIOD=-lhesiod
4030   fi
4031 fi
4032 AC_SUBST(LIBHESIOD)
4033
4034 # Do we need libresolv (due to res_init or Hesiod)?
4035 if test "$resolv" = yes && test $opsys != darwin; then
4036   LIBRESOLV=-lresolv
4037 else
4038   LIBRESOLV=
4039 fi
4040 AC_SUBST(LIBRESOLV)
4041
4042 # These tell us which Kerberos-related libraries to use.
4043 COM_ERRLIB=
4044 CRYPTOLIB=
4045 KRB5LIB=
4046 DESLIB=
4047 KRB4LIB=
4048
4049 if test "${with_kerberos}" != no; then
4050   OLD_LIBS=$LIBS
4051   AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4052   if test $have_com_err = yes; then
4053     COM_ERRLIB=-lcom_err
4054     LIBS="$COM_ERRLIB $LIBS"
4055   fi
4056   AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4057   if test $have_crypto = yes; then
4058     CRYPTOLIB=-lcrypto
4059     LIBS="$CRYPTOLIB $LIBS"
4060   fi
4061   AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4062   if test $have_k5crypto = yes; then
4063     CRYPTOLIB=-lk5crypto
4064     LIBS="$CRYPTOLIB $LIBS"
4065   fi
4066   AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4067   if test $have_krb5=yes; then
4068     KRB5LIB=-lkrb5
4069     LIBS="$KRB5LIB $LIBS"
4070   fi
4071   dnl FIXME Simplify.  Does not match 22 logic, thanks to default_off?
4072   if test "${with_kerberos5}" = no; then
4073     AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4074     if test $have_des425 = yes; then
4075       DESLIB=-ldes425
4076       LIBS="$DESLIB $LIBS"
4077     else
4078       AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4079       if test $have_des = yes; then
4080         DESLIB=-ldes
4081         LIBS="$DESLIB $LIBS"
4082       fi
4083     fi
4084     AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4085     if test $have_krb4 = yes; then
4086       KRB4LIB=-lkrb4
4087       LIBS="$KRB4LIB $LIBS"
4088     else
4089       AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4090       if test $have_krb = yes; then
4091         KRB4LIB=-lkrb
4092         LIBS="$KRB4LIB $LIBS"
4093       fi
4094     fi
4095   fi
4096
4097   if test "${with_kerberos5}" != no; then
4098     AC_CHECK_HEADERS(krb5.h,
4099       [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4100                         [#include <krb5.h>])])
4101   else
4102     AC_CHECK_HEADERS(krb.h,,
4103                      [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4104                                        [AC_CHECK_HEADERS(kerberos/krb.h)])])
4105   fi
4106   AC_CHECK_HEADERS(com_err.h)
4107   LIBS=$OLD_LIBS
4108 fi
4109
4110 AC_SUBST(COM_ERRLIB)
4111 AC_SUBST(CRYPTOLIB)
4112 AC_SUBST(KRB5LIB)
4113 AC_SUBST(DESLIB)
4114 AC_SUBST(KRB4LIB)
4115
4116 AC_CHECK_HEADERS(valgrind/valgrind.h)
4117
4118 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4119
4120 AC_CHECK_FUNCS_ONCE(tzset)
4121
4122 ok_so_far=yes
4123 AC_CHECK_FUNC(socket, , ok_so_far=no)
4124 if test $ok_so_far = yes; then
4125   AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4126 fi
4127 if test $ok_so_far = yes; then
4128   AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4129 fi
4130 if test $ok_so_far = yes; then
4131 dnl Fixme: Not used.  Should this be HAVE_SOCKETS?
4132   AC_DEFINE(HAVE_INET_SOCKETS, 1,
4133             [Define to 1 if you have inet sockets.])
4134 fi
4135
4136 AC_FUNC_FORK
4137
4138 AC_CHECK_FUNCS(snprintf)
4139
4140 dnl Check for glib.  This differs from other library checks in that
4141 dnl Emacs need not link to glib unless some other library is already
4142 dnl linking to glib.  Although glib provides no facilities that Emacs
4143 dnl needs for its own purposes, when glib is present Emacs needs to
4144 dnl use primitives like g_main_context_query to avoid clashing with
4145 dnl glib at a low level.
4146 dnl
4147 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4148 XGSELOBJ=
4149 OLDCFLAGS="$CFLAGS"
4150 OLDLIBS="$LIBS"
4151 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4152 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4153 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4154 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4155 AC_MSG_CHECKING([whether GLib is linked in])
4156 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4157         [[#include <glib.h>
4158         ]],
4159         [[g_print ("Hello world");]])],
4160      [links_glib=yes],
4161      [links_glib=no])
4162 AC_MSG_RESULT([$links_glib])
4163 if test "${links_glib}" = "yes"; then
4164   AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4165   if test "$HAVE_NS" = no;then
4166     XGSELOBJ=xgselect.o
4167   fi
4168 fi
4169 CFLAGS="$OLDCFLAGS"
4170 LIBS="$OLDLIBS"
4171 AC_SUBST(XGSELOBJ)
4172
4173 dnl Adapted from Haible's version.
4174 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4175   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4176     [[char* cs = nl_langinfo(CODESET);]])],
4177     emacs_cv_langinfo_codeset=yes,
4178     emacs_cv_langinfo_codeset=no)
4179   ])
4180 if test $emacs_cv_langinfo_codeset = yes; then
4181   AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4182     [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4183 fi
4184
4185 AC_TYPE_MBSTATE_T
4186
4187 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4188 dnl how the tty code is related to POSIX and/or other versions of termios.
4189 dnl The following looks like a useful start.
4190 dnl
4191 dnl AC_SYS_POSIX_TERMIOS
4192 dnl if test $ac_cv_sys_posix_termios = yes; then
4193 dnl    AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4194 dnl                                and macros for terminal control.])
4195 dnl    AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4196 dnl fi
4197
4198 dnl Turned on June 1996 supposing nobody will mind it.
4199 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4200 if test "${opsys}" != "mingw32"; then
4201    AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4202      in the full name stands for the login id.])
4203 fi
4204
4205 dnl Everybody supports this, except MS.
4206 dnl Seems like the kind of thing we should be testing for, though.
4207 ## Note: PTYs are broken on darwin <6.  Use at your own risk.
4208 if test "${opsys}" != "mingw32"; then
4209   AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4210 fi
4211
4212 dnl Everybody supports this, except MS-DOS.
4213 dnl Seems like the kind of thing we should be testing for, though.
4214 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4215 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4216   4.2-compatible sockets.])
4217
4218 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4219
4220 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4221   a null file, or a data sink.])
4222 if test "${opsys}" = "mingw32"; then
4223   AC_DEFINE(NULL_DEVICE, ["NUL:"])
4224 else
4225   AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4226 fi
4227
4228 if test "${opsys}" = "mingw32"; then
4229   SEPCHAR=';'
4230 else
4231   SEPCHAR=':'
4232 fi
4233 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4234 dnl This is for MinGW, and is used in test/Makefile.in.
4235 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4236 dnl decides that a command-line argument to be passed to a MinGW program
4237 dnl is a PATH-style list of directories.  But that heuristics plays it
4238 dnl safe, and only does the replacement when it is _absolutely_ sure it
4239 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4240 dnl which breaks in-tree builds.  So we do this manually instead.
4241 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4242 dnl be computed as ':' in MSYS Bash.
4243 AC_SUBST(SEPCHAR)
4244
4245 dnl Everybody supports this, except MS-DOS.
4246 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4247
4248 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4249
4250
4251 AC_DEFINE(DIRECTORY_SEP, ['/'],
4252   [Character that separates directories in a file name.])
4253
4254 if test "${opsys}" = "mingw32"; then
4255   AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4256     [Returns true if character is a device separator.])
4257
4258   AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4259     [Returns true if character is a directory separator.])
4260
4261   AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4262     [Returns true if character is any form of separator.])
4263 else
4264   AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4265     [Returns true if character is a device separator.])
4266
4267   AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4268     [Returns true if character is a directory separator.])
4269
4270   AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4271     [Returns true if character is any form of separator.])
4272 fi
4273
4274 AH_TEMPLATE(NO_EDITRES, [Define if XEditRes should not be used.])
4275
4276 case $opsys in
4277   aix4-2)
4278     dnl Unfortunately without libXmu we cannot support EditRes.
4279     if test "x$ac_cv_search_XmuConvertStandardSelection" = xno; then
4280       AC_DEFINE(NO_EDITRES, 1)
4281     fi
4282     ;;
4283
4284   hpux*)
4285     dnl Assar Westerlund <assar@sics.se> says this is necessary for
4286     dnl HP-UX 10.20, and that it works for HP-UX 0 as well.
4287     AC_DEFINE(NO_EDITRES, 1)
4288     ;;
4289 esac
4290
4291
4292 case $opsys in
4293   irix6-5 | sol2* | unixware )
4294     dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4295     dnl instead, there's a system variable _sys_nsig.  Unfortunately, we
4296     dnl need the constant to dimension an array.  So wire in the appropriate
4297     dnl value here.
4298     AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4299     ;;
4300 esac
4301
4302 emacs_broken_SIGIO=no
4303
4304 case $opsys in
4305   dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4306   dnl See eg <http://article.gmane.org/gmane.os.openbsd.ports/46831>.
4307   hpux* | irix6-5 | nacl | openbsd | sol2* | unixware )
4308     emacs_broken_SIGIO=yes
4309     ;;
4310
4311   aix4-2)
4312     dnl On AIX Emacs uses the gmalloc.c malloc implementation.  But given
4313     dnl the way this system works, libc functions that return malloced
4314     dnl memory use the libc malloc implementation. Calling xfree or
4315     dnl xrealloc on the results of such functions results in a crash.
4316     dnl
4317     dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4318     dnl but that does not currently work on this system.
4319     dnl
4320     dnl It is possible to completely override the malloc implementation on
4321     dnl AIX, but that involves putting the malloc functions in a shared
4322     dnl library and setting the MALLOCTYPE environment variable to point to
4323     dnl that shared library.
4324     dnl
4325     dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4326     dnl to avoid a crash just use the Emacs implementation for that function.
4327     dnl
4328     dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4329     dnl of this file, so that we do not check for get_current_dir_name
4330     dnl on AIX.  But that might be fragile if something else ends
4331     dnl up testing for get_current_dir_name as a dependency.
4332     AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4333       get_current_dir_name should not be used.])
4334     ;;
4335
4336   freebsd)
4337     dnl Circumvent a bug in FreeBSD.  In the following sequence of
4338     dnl writes/reads on a PTY, read(2) returns bogus data:
4339     dnl
4340     dnl write(2)  1022 bytes
4341     dnl write(2)   954 bytes, get EAGAIN
4342     dnl read(2)   1024 bytes in process_read_output
4343     dnl read(2)     11 bytes in process_read_output
4344     dnl
4345     dnl That is, read(2) returns more bytes than have ever been written
4346     dnl successfully.  The 1033 bytes read are the 1022 bytes written
4347     dnl successfully after processing (for example with CRs added if the
4348     dnl terminal is set up that way which it is here).  The same bytes will
4349     dnl be seen again in a later read(2), without the CRs.
4350     AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4351       work around an issue when reading from a PTY.])
4352     ;;
4353 esac
4354
4355 case $opsys in
4356   gnu-* | sol2-10 )
4357     dnl FIXME Can't we test if this exists (eg /proc/$$)?
4358     AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4359   ;;
4360 esac
4361
4362 case $opsys in
4363   darwin | dragonfly | freebsd | netbsd | openbsd )
4364     AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4365       close a pty to make it a controlling terminal (it is already a
4366       controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4367   ;;
4368 esac
4369
4370 dnl FIXME Surely we can test for this rather than hard-code it.
4371 case $opsys in
4372   netbsd | openbsd) sound_device="/dev/audio" ;;
4373   *) sound_device="/dev/dsp" ;;
4374 esac
4375
4376 dnl Used in sound.c
4377 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4378   [Name of the default sound device.])
4379
4380
4381 dnl Emacs can read input using SIGIO and buffering characters itself,
4382 dnl or using CBREAK mode and making C-g cause SIGINT.
4383 dnl The choice is controlled by the variable interrupt_input.
4384 dnl
4385 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4386 dnl
4387 dnl Emacs uses the presence of the USABLE_SIGIO macro
4388 dnl to indicate whether or not signal-driven I/O is possible.  It uses
4389 dnl INTERRUPT_INPUT to decide whether to use it by default.
4390 dnl
4391 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4392 dnl CBREAK mode has two disadvantages
4393 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4394 dnl I hear that in system V this problem does not exist.
4395 dnl 2) Control-G causes output to be discarded.
4396 dnl I do not know whether this can be fixed in system V.
4397 dnl
4398 dnl Another method of doing input is planned but not implemented.
4399 dnl It would have Emacs fork off a separate process
4400 dnl to read the input and send it to the true Emacs process
4401 dnl through a pipe.
4402 case $opsys in
4403   darwin | gnu-linux | gnu-kfreebsd )
4404     AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4405   ;;
4406 esac
4407
4408
4409 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4410 dnl as 'NO', we must define NARROWPROTO manually.  Such a define is
4411 dnl generated in the Makefile generated by 'xmkmf'.  If we don't define
4412 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4413 dnl taking float or double parameters.
4414 case $opsys in
4415   cygwin|gnu|gnu-linux|gnu-kfreebsd|irix6-5|freebsd|netbsd|openbsd)
4416     AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4417       file defines 'NeedWidePrototypes' as 'NO'.])
4418   ;;
4419 esac
4420
4421
4422 dnl Used in process.c, this must be a loop, even if it only runs once.
4423 dnl (Except on SGI; see below.  Take that, clarity and consistency!)
4424 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4425 dnl Only used if !PTY_ITERATION.  Iterate from FIRST_PTY_LETTER to z,
4426 dnl trying suffixes 0-16.
4427 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4428   first PTY, if PTYs are supported.])
4429 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4430 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4431   end of a PTY, if non-standard.])
4432 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4433   end of a PTY, if non-standard.])
4434
4435 case $opsys in
4436   aix4-2 )
4437     AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4438     dnl You allocate a pty by opening /dev/ptc to get the master side.
4439     dnl To get the name of the slave side, you just ttyname() the master side.
4440     AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4441     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4442     ;;
4443
4444   cygwin )
4445     AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4446     dnl multi-line AC_DEFINEs are hard. :(
4447     AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (false)])
4448     AC_DEFINE(PTY_NAME_SPRINTF, [])
4449     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4450     ;;
4451
4452   gnu | openbsd )
4453     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4454     ;;
4455
4456   gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4457     dnl if HAVE_GRANTPT
4458     if test "x$ac_cv_func_grantpt" = xyes; then
4459       AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4460       AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4461       dnl Note that grantpt and unlockpt may fork.  We must block SIGCHLD
4462       dnl to prevent sigchld_handler from intercepting the child's death.
4463       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); }])
4464       dnl if HAVE_POSIX_OPENPT
4465       if test "x$ac_cv_func_posix_openpt" = xyes; then
4466         AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4467         AC_DEFINE(PTY_NAME_SPRINTF, [])
4468       dnl if HAVE_GETPT
4469       elif test "x$ac_cv_func_getpt" = xyes; then
4470         AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4471         AC_DEFINE(PTY_NAME_SPRINTF, [])
4472       else
4473         AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4474       fi
4475     else
4476       AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4477     fi
4478     ;;
4479
4480   hpux*)
4481     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4482     AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4483     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4484     ;;
4485
4486   irix6-5 )
4487     dnl It looks like this cannot be right, because it is not a loop.
4488     dnl However, process.c actually does this:
4489     dnl # ifndef __sgi
4490     dnl   continue;
4491     dnl # else
4492     dnl   return -1;
4493     dnl # endif
4494     dnl which presumably makes it OK, since irix == sgi (?).
4495     dnl FIXME it seems like this special treatment is unnecessary?
4496     dnl Why can't irix use a single-trip loop like eg cygwin?
4497     AC_DEFINE(PTY_ITERATION, [])
4498     dnl Not used, because PTY_ITERATION is defined.
4499     AC_DEFINE(FIRST_PTY_LETTER, ['q'])
4500     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); }])
4501     dnl No need to get the pty name at all.
4502     AC_DEFINE(PTY_NAME_SPRINTF, [])
4503     dnl No need to use sprintf to get the tty name--we get that from _getpty.
4504     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4505     ;;
4506
4507   sol2* )
4508     dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4509     dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4510     dnl from intercepting that death.  If any child but grantpt's should die
4511     dnl within, it should be caught after sigrelse(2).
4512     AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4513     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); }])
4514     ;;
4515
4516   unixware )
4517     dnl Comments are as per sol2*.
4518     AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4519     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); }])
4520     ;;
4521 esac
4522
4523
4524 case $opsys in
4525   sol2* | unixware )
4526     dnl This change means that we don't loop through allocate_pty too
4527     dnl many times in the (rare) event of a failure.
4528     AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4529     AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4530     dnl Push various streams modules onto a PTY channel.  Used in process.c.
4531     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.])
4532     ;;
4533 esac
4534
4535
4536 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4537 "typing" a signal character on the pty.])
4538
4539 case $opsys in
4540   dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4541   dnl thomas@mathematik.uni-bremen.de says this is needed for IRIX.
4542   aix4-2 | cygwin | gnu | irix6-5 | dragonfly | freebsd | netbsd | openbsd | darwin )
4543     AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4544     ;;
4545
4546   dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4547   dnl FIXME Does gnu-kfreebsd have linux/version.h?  It seems unlikely...
4548   gnu-linux | gnu-kfreebsd )
4549
4550     AC_MSG_CHECKING([for signals via characters])
4551     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4552 #include <linux/version.h>
4553 #if LINUX_VERSION_CODE < 0x20400
4554 # error "Linux version too old"
4555 #endif
4556       ]], [[]])], emacs_signals_via_chars=yes, emacs_signals_via_chars=no)
4557
4558     AC_MSG_RESULT([$emacs_signals_via_chars])
4559     test $emacs_signals_via_chars = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4560     ;;
4561 esac
4562
4563
4564 AH_TEMPLATE(TAB3, [Undocumented.])
4565
4566 case $opsys in
4567   darwin) AC_DEFINE(TAB3, OXTABS) ;;
4568
4569   gnu | dragonfly | freebsd | netbsd | openbsd )
4570     AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4571     AC_DEFINE(TAB3, OXTABS)
4572     ;;
4573
4574   gnu-linux | gnu-kfreebsd )
4575     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4576 #ifndef __ia64__
4577 # error "not ia64"
4578 #endif
4579       ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4580         [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)],
4581         [Mark a secondary stack, like the register stack on the ia64.]), [])
4582     ;;
4583
4584   hpux*)
4585     AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4586       run_time_remap; for HPUX.])
4587     ;;
4588 esac
4589
4590
4591 dnl This won't be used automatically yet.  We also need to know, at least,
4592 dnl that the stack is continuous.
4593 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4594   registers relevant for conservative garbage collection in the jmp_buf.])
4595
4596
4597 case $opsys in
4598   dnl Not all the architectures are tested, but there are Debian packages
4599   dnl for SCM and/or Guile on them, so the technique must work.  See also
4600   dnl comments in alloc.c concerning setjmp and gcc.
4601   dnl Fixme: it's probably safe to just use the GCC conditional below.
4602   gnu-linux | gnu-kfreebsd )
4603     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4604 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4605   || defined __alpha__ || defined __mips__ || defined __s390__ \
4606   || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4607   || defined __ia64__ || defined __sh__
4608 /* ok */
4609 #else
4610 # error "setjmp not known to work on this arch"
4611 #endif
4612     ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4613     ;;
4614 esac
4615
4616
4617 if test x$GCC = xyes; then
4618    dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4619    AC_DEFINE(GC_SETJMP_WORKS, 1)
4620 else
4621   case $opsys in
4622     dnl irix: Tested on Irix 6.5.  SCM worked on earlier versions.
4623     aix* | dragonfly | freebsd | netbsd | openbsd | irix6-5 | sol2* )
4624       AC_DEFINE(GC_SETJMP_WORKS, 1)
4625       ;;
4626   esac
4627 fi                              dnl GCC?
4628
4629 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4630 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4631   [AC_LINK_IFELSE(
4632      [AC_LANG_PROGRAM(
4633        [[#include <setjmp.h>
4634          #ifdef __MINGW32__
4635          # define _longjmp longjmp
4636          #endif
4637        ]],
4638        [[jmp_buf j;
4639          if (! _setjmp (j))
4640            _longjmp (j, 1);]])],
4641      [emacs_cv_func__setjmp=yes],
4642      [emacs_cv_func__setjmp=no])])
4643 if test $emacs_cv_func__setjmp = yes; then
4644   AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4645 fi
4646
4647 # We need to preserve signal mask to handle C stack overflows.
4648 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4649   [AC_LINK_IFELSE(
4650      [AC_LANG_PROGRAM(
4651        [[#include <setjmp.h>
4652        ]],
4653        [[sigjmp_buf j;
4654          if (! sigsetjmp (j, 1))
4655            siglongjmp (j, 1);]])],
4656      [emacs_cv_func_sigsetjmp=yes],
4657      [emacs_cv_func_sigsetjmp=no])])
4658 if test $emacs_cv_func_sigsetjmp = yes; then
4659   AC_DEFINE([HAVE_SIGSETJMP], 1,
4660     [Define to 1 if sigsetjmp and siglongjmp work.])
4661 fi
4662
4663 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4664   yes,yes,* | *,*,mingw32)
4665     AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4666       [Define to 1 if C stack overflow can be handled in some cases.]);;
4667 esac
4668
4669 case $opsys in
4670   sol2* | unixware )
4671     dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4672     dnl subprocesses the usual way.  But TIOCSIGNAL does work for PTYs,
4673     dnl and this is all we need.
4674     AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4675     ;;
4676 esac
4677
4678
4679 case $opsys in
4680   hpux* | sol2* )
4681     dnl Used in xfaces.c.
4682     AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4683       some systems, where it requires time.h.])
4684     ;;
4685 esac
4686
4687
4688 dnl Define symbols to identify the version of Unix this is.
4689 dnl Define all the symbols that apply correctly.
4690 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4691 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4692 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4693 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4694
4695 case $opsys in
4696   aix4-2)
4697     AC_DEFINE(USG, [])
4698     dnl This symbol should be defined on AIX Version 3  ???????
4699     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4700 #ifndef _AIX
4701 # error "_AIX not defined"
4702 #endif
4703     ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4704     ;;
4705
4706   cygwin)
4707     AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4708     ;;
4709
4710   darwin)
4711     dnl Not __APPLE__, as this may not be defined on non-OSX Darwin.
4712     dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4713     dnl distinguish OS X from pure Darwin.
4714     AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4715     ;;
4716
4717   gnu-linux | gnu-kfreebsd )
4718     AC_DEFINE(USG, [])
4719     AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4720     ;;
4721
4722   hpux*)
4723     AC_DEFINE(USG, [])
4724     AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4725     ;;
4726
4727   irix6-5)
4728     AC_DEFINE(USG, [])
4729     AC_DEFINE(USG5_4, [])
4730     AC_DEFINE(IRIX6_5, [], [Define if the system is IRIX.])
4731     ;;
4732
4733   mingw32)
4734     AC_DEFINE(DOS_NT, [])
4735     AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4736     if test "x$ac_enable_checking" != "x" ; then
4737       AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4738     fi
4739     ;;
4740
4741   sol2*)
4742     AC_DEFINE(USG, [])
4743     AC_DEFINE(USG5_4, [])
4744     AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4745     ;;
4746
4747   unixware)
4748     AC_DEFINE(USG, [])
4749     AC_DEFINE(USG5_4, [])
4750     ;;
4751 esac
4752
4753 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4754   [case $opsys in
4755      aix4-2 | nacl)
4756        dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4757        emacs_cv_usable_FIONREAD=no
4758        ;;
4759
4760      mingw32)
4761        emacs_cv_usable_FIONREAD=yes
4762        ;;
4763
4764      *)
4765        AC_COMPILE_IFELSE(
4766          [AC_LANG_PROGRAM([[#include <sys/types.h>
4767                             #include <sys/ioctl.h>
4768                             #ifdef USG5_4
4769                             # include <sys/filio.h>
4770                             #endif
4771                           ]],
4772                           [[int foo = ioctl (0, FIONREAD, &foo);]])],
4773          [emacs_cv_usable_FIONREAD=yes],
4774          [emacs_cv_usable_FIONREAD=no])
4775        ;;
4776    esac])
4777 if test $emacs_cv_usable_FIONREAD = yes; then
4778   AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4779
4780   if test $emacs_broken_SIGIO = no; then
4781     AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4782       [AC_COMPILE_IFELSE(
4783          [AC_LANG_PROGRAM([[#include <fcntl.h>
4784                             #include <signal.h>
4785                           ]],
4786                           [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4787          [emacs_cv_usable_SIGIO=yes],
4788          [emacs_cv_usable_SIGIO=no])],
4789       [emacs_cv_usable_SIGIO=yes],
4790       [emacs_cv_usable_SIGIO=no])
4791     if test $emacs_cv_usable_SIGIO = yes; then
4792       AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4793     fi
4794   fi
4795 fi
4796
4797 case $opsys in
4798   hpux11)
4799     dnl It works to open the pty's tty in the parent (Emacs), then
4800     dnl close and reopen it in the child.
4801     AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4802       works to open a pty's tty in the parent process, then close and
4803       reopen it in the child.])
4804     ;;
4805
4806   irix6-5)
4807     AC_DEFINE(PREFER_VSUSP, 1, [Define if process_send_signal should
4808       use VSUSP instead of VSWTCH.])
4809     ;;
4810
4811   sol2-10)
4812     AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4813       on Solaris.])
4814     ;;
4815 esac
4816
4817 # Set up the CFLAGS for real compilation, so we can substitute it.
4818 CFLAGS="$REAL_CFLAGS"
4819 CPPFLAGS="$REAL_CPPFLAGS"
4820 LIBS="$REAL_LIBS"
4821
4822 ## Hack to detect a buggy GCC version.
4823 if test "$GCC" = yes && \
4824    $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4825   case $CFLAGS in
4826     *-fno-optimize-sibling-calls*) ;;
4827     *-O@<:@23@:>@*)
4828       AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4829   esac
4830 fi
4831
4832 version=$PACKAGE_VERSION
4833
4834 copyright="Copyright (C) 2016 Free Software Foundation, Inc."
4835 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4836   [Short copyright string for this version of Emacs.])
4837 AC_SUBST(copyright)
4838
4839 ### Specify what sort of things we'll be editing into Makefile and config.h.
4840 ### Use configuration here uncanonicalized to avoid exceeding size limits.
4841 AC_SUBST(version)
4842 AC_SUBST(configuration)
4843 ## Unused?
4844 AC_SUBST(canonical)
4845 AC_SUBST(srcdir)
4846 AC_SUBST(prefix)
4847 AC_SUBST(exec_prefix)
4848 AC_SUBST(bindir)
4849 AC_SUBST(datadir)
4850 AC_SUBST(sharedstatedir)
4851 AC_SUBST(libexecdir)
4852 AC_SUBST(mandir)
4853 AC_SUBST(infodir)
4854 AC_SUBST(lispdir)
4855 AC_SUBST(standardlisppath)
4856 AC_SUBST(locallisppath)
4857 AC_SUBST(lisppath)
4858 AC_SUBST(x_default_search_path)
4859 AC_SUBST(etcdir)
4860 AC_SUBST(archlibdir)
4861 AC_SUBST(etcdocdir)
4862 AC_SUBST(bitmapdir)
4863 AC_SUBST(gamedir)
4864 AC_SUBST(gameuser)
4865 AC_SUBST(gamegroup)
4866 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
4867 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
4868 ## end of LIBX_BASE, but nothing ever set it.
4869 AC_SUBST(LD_SWITCH_X_SITE)
4870 AC_SUBST(C_SWITCH_X_SITE)
4871 AC_SUBST(GNUSTEP_CFLAGS)
4872 AC_SUBST(CFLAGS)
4873 ## Used in lwlib/Makefile.in.
4874 AC_SUBST(X_TOOLKIT_TYPE)
4875 AC_SUBST(ns_appdir)
4876 AC_SUBST(ns_appbindir)
4877 AC_SUBST(ns_appresdir)
4878 AC_SUBST(ns_appsrc)
4879 AC_SUBST(GNU_OBJC_CFLAGS)
4880 AC_SUBST(OTHER_FILES)
4881
4882 if test -n "${term_header}"; then
4883     AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
4884         [Define to the header for the built-in window system.])
4885 fi
4886
4887 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION,  "${canonical}",
4888                    [Define to the canonical Emacs configuration name.])
4889 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
4890                    [Define to the options passed to configure.])
4891 AH_TEMPLATE(config_opsysfile, [Some platforms that do not use configure
4892   define this to include extra configuration information.])
4893
4894 case $opsys in
4895   mingw32)
4896     AC_DEFINE(config_opsysfile, <ms-w32.h>, [])
4897     ;;
4898 esac
4899
4900 XMENU_OBJ=
4901 XOBJ=
4902 FONT_OBJ=
4903 if test "${HAVE_X_WINDOWS}" = "yes" ; then
4904   AC_DEFINE(HAVE_X_WINDOWS, 1,
4905             [Define to 1 if you want to use the X window system.])
4906   XMENU_OBJ=xmenu.o
4907   XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
4908   FONT_OBJ=xfont.o
4909   if test "$USE_CAIRO" = "yes"; then
4910     FONT_OBJ="ftfont.o ftcrfont.o"
4911   elif test "$HAVE_XFT" = "yes"; then
4912     FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
4913   elif test "$HAVE_FREETYPE" = "yes"; then
4914     FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
4915   fi
4916   AC_SUBST(FONT_OBJ)
4917 fi
4918 AC_SUBST(XMENU_OBJ)
4919 AC_SUBST(XOBJ)
4920 AC_SUBST(FONT_OBJ)
4921
4922 WIDGET_OBJ=
4923 MOTIF_LIBW=
4924 if test "${USE_X_TOOLKIT}" != "none" ; then
4925   WIDGET_OBJ=widget.o
4926   AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
4927   if test "${USE_X_TOOLKIT}" = "LUCID"; then
4928     AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
4929   elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
4930     AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
4931     MOTIF_LIBW=-lXm
4932     case "$opsys" in
4933       gnu-linux)
4934         ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
4935         MOTIF_LIBW="$MOTIF_LIBW -lXpm"
4936         ;;
4937
4938       unixware)
4939         ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
4940         ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
4941         MOTIF_LIBW="MOTIF_LIBW -lXimp"
4942         ;;
4943
4944       aix4-2)
4945         ## olson@mcs.anl.gov says -li18n is needed by -lXm.
4946         MOTIF_LIBW="$MOTIF_LIBW -li18n"
4947         ;;
4948     esac
4949     MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
4950   fi
4951 fi
4952 AC_SUBST(WIDGET_OBJ)
4953
4954 TOOLKIT_LIBW=
4955 case "$USE_X_TOOLKIT" in
4956   MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
4957   LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
4958   none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
4959 esac
4960 AC_SUBST(TOOLKIT_LIBW)
4961
4962 if test "${opsys}" != "mingw32"; then
4963   if test "$USE_X_TOOLKIT" = "none"; then
4964     LIBXT_OTHER="\$(LIBXSM)"
4965   else
4966     LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
4967   fi
4968 fi
4969 AC_SUBST(LIBXT_OTHER)
4970
4971 if test "${HAVE_X11}" = "yes" ; then
4972   AC_DEFINE(HAVE_X11, 1,
4973             [Define to 1 if you want to use version 11 of X windows.])
4974   LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
4975 else
4976   LIBX_OTHER=
4977 fi
4978 AC_SUBST(LIBX_OTHER)
4979
4980 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
4981   LIBXMENU=
4982 elif test "$USE_X_TOOLKIT" = none; then
4983   LIBXMENU='$(oldXMenudir)/libXMenu11.a'
4984 else
4985   LIBXMENU='$(lwlibdir)/liblw.a'
4986 fi
4987 AC_SUBST(LIBXMENU)
4988
4989 AC_CACHE_CHECK([for struct alignment],
4990   [emacs_cv_struct_alignment],
4991   [AC_COMPILE_IFELSE(
4992      [AC_LANG_PROGRAM([[#include <stddef.h>
4993                         struct __attribute__ ((aligned (8))) s { char c; };
4994                         struct t { char c; struct s s; };
4995                         char verify[offsetof (struct t, s) == 8 ? 1 : -1];
4996                       ]])],
4997      [emacs_cv_struct_alignment=yes],
4998      [emacs_cv_struct_alignment=no])])
4999 if test "$emacs_cv_struct_alignment" = yes; then
5000   AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5001     [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5002      structure to an N-byte boundary.])
5003 fi
5004
5005 if test "${GNU_MALLOC}" = "yes" ; then
5006   AC_DEFINE(GNU_MALLOC, 1,
5007             [Define to 1 if you want to use the GNU memory allocator.])
5008 fi
5009
5010 RALLOC_OBJ=
5011 if test "${REL_ALLOC}" = "yes" ; then
5012   AC_DEFINE(REL_ALLOC, 1,
5013             [Define REL_ALLOC if you want to use the relocating allocator for
5014              buffer space.])
5015
5016   test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5017 fi
5018 AC_SUBST(RALLOC_OBJ)
5019
5020 if test "$opsys" = "cygwin"; then
5021   CYGWIN_OBJ="sheap.o cygw32.o"
5022   ## Cygwin differs because of its unexec().
5023   PRE_ALLOC_OBJ=
5024   POST_ALLOC_OBJ=lastfile.o
5025 elif test "$opsys" = "mingw32"; then
5026   CYGWIN_OBJ=
5027   PRE_ALLOC_OBJ=
5028   POST_ALLOC_OBJ=lastfile.o
5029 else
5030   CYGWIN_OBJ=
5031   PRE_ALLOC_OBJ=lastfile.o
5032   POST_ALLOC_OBJ=
5033 fi
5034 AC_SUBST(CYGWIN_OBJ)
5035 AC_SUBST(PRE_ALLOC_OBJ)
5036 AC_SUBST(POST_ALLOC_OBJ)
5037
5038 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5039 dnl verbatim defined above.  The tricky name is apropos, as this hack
5040 dnl makes Fortify go sour!
5041 AH_VERBATIM([FORTIFY_SOUR],
5042 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5043    The workaround disables some useful run-time checking, so it
5044    should be conditional to the platforms with the performance bug.
5045    Perhaps Apple will fix this some day; also see m4/extern-inline.m4.  */
5046 #if defined __APPLE__ && defined __GNUC__
5047 # ifndef _DONT_USE_CTYPE_INLINE_
5048 #  define _DONT_USE_CTYPE_INLINE_
5049 # endif
5050 # ifndef _FORTIFY_SOURCE
5051 #  define _FORTIFY_SOURCE 0
5052 # endif
5053 #endif
5054 ])
5055
5056 # If user asks to omit features, disable optional features that gnulib
5057 # might otherwise enable.
5058 if test "$with_features" = no && test "$enable_acl" != yes; then
5059   enable_acl=no
5060 fi
5061
5062 # Configure gnulib.  Although this does not affect CFLAGS or LIBS permanently.
5063 # it temporarily reverts them to their pre-pkg-config values,
5064 # because gnulib needs to work with both src (which uses the
5065 # pkg-config stuff) and lib-src (which does not).  For example, gnulib
5066 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5067 # and it therefore needs to run in an environment where LIBS does not
5068 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5069 # for some package unrelated to lib-src.
5070 SAVE_CFLAGS=$CFLAGS
5071 SAVE_LIBS=$LIBS
5072 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5073 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5074 gl_ASSERT_NO_GNULIB_POSIXCHECK
5075 gl_ASSERT_NO_GNULIB_TESTS
5076 gl_INIT
5077 CFLAGS=$SAVE_CFLAGS
5078 LIBS=$SAVE_LIBS
5079
5080 if test "${opsys}" = "mingw32"; then
5081   CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5082   # Remove unneeded switches from the value of CC that goes to Makefiles
5083   CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5084 fi
5085
5086 case "$opsys" in
5087   aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5088
5089   cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5090
5091   darwin)
5092    ## The -headerpad option tells ld (see man page) to leave room at the
5093    ## end of the header for adding load commands.  Needed for dumping.
5094    ## 0x1000 is enough for roughly 52 load commands on the x86_64
5095    ## architecture (where they are 78 bytes each). The actual number of
5096    ## load commands added is not consistent but normally ranges from
5097    ## about 14 to about 34. Setting it high gets us plenty of slop and
5098    ## only costs about 1.5K of wasted binary space.
5099    headerpad_extra=1000
5100    if test "$HAVE_NS" = "yes"; then
5101      libs_nsgui="-framework AppKit"
5102      if test "$NS_IMPL_COCOA" = "yes"; then
5103         libs_nsgui="$libs_nsgui -framework IOKit"
5104      fi
5105    else
5106      libs_nsgui=
5107    fi
5108    LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5109
5110    ## This is here because src/Makefile.in did some extra fiddling around
5111    ## with LD_SWITCH_SYSTEM.  It seems cleaner to put this in
5112    ## LD_SWITCH_SYSTEM_TEMACS instead,
5113    test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5114      LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5115    ;;
5116
5117   ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5118   ## find X at run-time.
5119   ## When handled by cpp, this was in LD_SWITCH_SYSTEM.  However, at the
5120   ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5121   ## had not yet been defined and was expanded to null.  Hence LD_SWITCH_SYSTEM
5122   ## had different values in configure (in ac_link) and src/Makefile.in.
5123   ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5124   gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5125
5126   mingw32)
5127    ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5128    case "$canonical" in
5129      x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5130      *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5131    esac
5132    ;;
5133
5134   *) LD_SWITCH_SYSTEM_TEMACS= ;;
5135 esac
5136
5137 # -nopie fixes a temacs segfault on Gentoo, OpenBSD, and other systems
5138 # with "hardened" GCC configurations for some reason (Bug#18784).
5139 # We don't know why -nopie works, but not segfaulting is better than
5140 # segfaulting.  Use ac_c_werror_flag=yes when trying -nopie, otherwise
5141 # clang keeps warning that it does not understand -nopie, and pre-4.6
5142 # GCC has a similar problem (Bug#20338).
5143 AC_CACHE_CHECK([whether $CC accepts -nopie],
5144   [emacs_cv_prog_cc_nopie],
5145   [emacs_save_c_werror_flag=$ac_c_werror_flag
5146    emacs_save_LDFLAGS=$LDFLAGS
5147    ac_c_werror_flag=yes
5148    LDFLAGS="$LDFLAGS -nopie"
5149    AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
5150      [emacs_cv_prog_cc_nopie=yes],
5151      [emacs_cv_prog_cc_nopie=no])
5152    ac_c_werror_flag=$emacs_save_c_werror_flag
5153    LDFLAGS=$emacs_save_LDFLAGS])
5154 if test "$emacs_cv_prog_cc_nopie" = yes; then
5155   LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -nopie"
5156 fi
5157
5158 if test x$ac_enable_profiling != x ; then
5159   case $opsys in
5160     *freebsd | gnu-linux) ;;
5161     *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5162   esac
5163 fi
5164
5165 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5166
5167 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5168
5169 ## Common for all window systems
5170 if test "$window_system" != "none"; then
5171   AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5172   AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5173   WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5174 fi
5175
5176 AC_SUBST(WINDOW_SYSTEM_OBJ)
5177
5178 AH_TOP([/* GNU Emacs site configuration template file.
5179
5180 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2016
5181   Free Software Foundation, Inc.
5182
5183 This file is part of GNU Emacs.
5184
5185 GNU Emacs is free software: you can redistribute it and/or modify
5186 it under the terms of the GNU General Public License as published by
5187 the Free Software Foundation, either version 3 of the License, or
5188 (at your option) any later version.
5189
5190 GNU Emacs is distributed in the hope that it will be useful,
5191 but WITHOUT ANY WARRANTY; without even the implied warranty of
5192 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
5193 GNU General Public License for more details.
5194
5195 You should have received a copy of the GNU General Public License
5196 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
5197
5198
5199 /* No code in Emacs #includes config.h twice, but some bits of code
5200    intended to work with other packages as well (like gmalloc.c)
5201    think they can include it as many times as they like.  */
5202 #ifndef EMACS_CONFIG_H
5203 #define EMACS_CONFIG_H
5204 ])dnl
5205
5206 AH_BOTTOM([#include <conf_post.h>
5207
5208 #endif /* EMACS_CONFIG_H */
5209
5210 /*
5211 Local Variables:
5212 mode: c
5213 End:
5214 */
5215 ])dnl
5216
5217 #### Report on what we decided to do.
5218 #### Report GTK as a toolkit, even if it doesn't use Xt.
5219 #### It makes printing result more understandable as using GTK sets
5220 #### toolkit_scroll_bars to yes by default.
5221 if test "${HAVE_GTK}" = "yes"; then
5222   USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5223 fi
5224
5225 if test $USE_ACL -ne 0; then
5226   ACL_SUMMARY="yes $LIB_ACL"
5227 else
5228   ACL_SUMMARY=no
5229 fi
5230
5231 emacs_standard_dirs='Standard dirs'
5232 AS_ECHO(["
5233 Configured for '${canonical}'.
5234
5235   Where should the build process find the source code?    ${srcdir}
5236   What compiler should emacs be built with?               ${CC} ${CFLAGS}
5237   Should Emacs use the GNU version of malloc?             ${GNU_MALLOC}${GNU_MALLOC_reason}
5238   Should Emacs use a relocating allocator for buffers?    ${REL_ALLOC}
5239   Should Emacs use mmap(2) for buffer allocation?         $use_mmap_for_buffers
5240   What window system should Emacs use?                    ${window_system}
5241   What toolkit should Emacs use?                          ${USE_X_TOOLKIT}
5242   Where do we find X Windows header files?                ${x_includes:-$emacs_standard_dirs}
5243   Where do we find X Windows libraries?                   ${x_libraries:-$emacs_standard_dirs}"])
5244
5245 optsep=
5246 emacs_config_features=
5247 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5248   GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5249   LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT X11 NS MODULES; do
5250
5251     case $opt in
5252       NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5253       CAIRO|TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5254       *) eval val=\${HAVE_$opt} ;;
5255     esac
5256     case x$val in
5257       xno|xnone|x) continue ;;
5258     esac
5259     case $opt in
5260       X_TOOLKIT)
5261         case $val in
5262           GTK*|LUCID|MOTIF) opt=$val ;;
5263           *) continue ;;
5264         esac
5265       ;;
5266     esac
5267     AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5268     optsep=' '
5269 done
5270 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5271   [Summary of some of the main features enabled by configure.])
5272
5273 AS_ECHO(["  Does Emacs use -lXaw3d?                                 ${HAVE_XAW3D}
5274   Does Emacs use -lXpm?                                   ${HAVE_XPM}
5275   Does Emacs use -ljpeg?                                  ${HAVE_JPEG}
5276   Does Emacs use -ltiff?                                  ${HAVE_TIFF}
5277   Does Emacs use a gif library?                           ${HAVE_GIF} $LIBGIF
5278   Does Emacs use a png library?                           ${HAVE_PNG} $LIBPNG
5279   Does Emacs use -lrsvg-2?                                ${HAVE_RSVG}
5280   Does Emacs use cairo?                                   ${USE_CAIRO}
5281   Does Emacs use imagemagick?                             ${HAVE_IMAGEMAGICK}
5282   Does Emacs support sound?                               ${HAVE_SOUND}
5283   Does Emacs use -lgpm?                                   ${HAVE_GPM}
5284   Does Emacs use -ldbus?                                  ${HAVE_DBUS}
5285   Does Emacs use -lgconf?                                 ${HAVE_GCONF}
5286   Does Emacs use GSettings?                               ${HAVE_GSETTINGS}
5287   Does Emacs use a file notification library?             ${NOTIFY_SUMMARY}
5288   Does Emacs use access control lists?                    ${ACL_SUMMARY}
5289   Does Emacs use -lselinux?                               ${HAVE_LIBSELINUX}
5290   Does Emacs use -lgnutls?                                ${HAVE_GNUTLS}
5291   Does Emacs use -lxml2?                                  ${HAVE_LIBXML2}
5292   Does Emacs use -lfreetype?                              ${HAVE_FREETYPE}
5293   Does Emacs use -lm17n-flt?                              ${HAVE_M17N_FLT}
5294   Does Emacs use -lotf?                                   ${HAVE_LIBOTF}
5295   Does Emacs use -lxft?                                   ${HAVE_XFT}
5296   Does Emacs directly use zlib?                           ${HAVE_ZLIB}
5297   Does Emacs have dynamic modules support?                ${HAVE_MODULES}
5298   Does Emacs use toolkit scroll bars?                     ${USE_TOOLKIT_SCROLL_BARS}
5299 "])
5300
5301 if test -n "${EMACSDATA}"; then
5302    AS_ECHO(["  Environment variable EMACSDATA set to:                  $EMACSDATA"])
5303 fi
5304 if test -n "${EMACSDOC}"; then
5305    AS_ECHO(["  Environment variable EMACSDOC set to:                   $EMACSDOC"])
5306 fi
5307
5308 echo
5309
5310 if test "$HAVE_NS" = "yes"; then
5311    echo
5312    AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5313 The installed application will go to nextstep/Emacs.app and can be
5314 run or moved from there."])
5315    if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5316       echo "The application will be fully self-contained."
5317     else
5318       AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5319 You may need to run \"${MAKE-make} install\" with sudo.  The application will fail
5320 to run if these resources are not installed."])
5321    fi
5322    echo
5323 fi
5324
5325 if test "${opsys}" = "cygwin"; then
5326   case `uname -r` in
5327     1.5.*) AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5328            echo
5329            ;;
5330   esac
5331 fi
5332
5333 # Remove any trailing slashes in these variables.
5334 case $prefix in
5335   */) prefix=`AS_DIRNAME(["$prefix."])`;;
5336 esac
5337 case $exec_prefix in
5338   */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5339 esac
5340
5341 if test "$HAVE_NS" = "yes"; then
5342   if test "$NS_IMPL_GNUSTEP" = yes; then
5343     AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5344       nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5345     ns_check_file=Resources/Info-gnustep.plist
5346   else
5347     AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5348       nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5349     ns_check_file=Contents/Info.plist
5350   fi
5351   AC_SUBST(ns_check_file)
5352 fi
5353
5354 dnl config.status treats $srcdir specially, so I think this is ok...
5355 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5356
5357 dnl Obviously there is duplication here wrt $SUBDIR_MAKEFILES.
5358 dnl You _can_ use that variable in AC_CONFIG_FILES, so long as any directory
5359 dnl using automake (ie lib/) is explicitly listed and not "hidden" in a variable
5360 dnl (else you get "no 'Makefile.am' found for any configure output").
5361 dnl This will work, but you get a config.status that is not quite right
5362 dnl (see http://lists.gnu.org/archive/html/bug-autoconf/2008-08/msg00028.html).
5363 dnl That doesn't have any obvious consequences for Emacs, but on the whole
5364 dnl it seems better to just live with the duplication.
5365 SUBDIR_MAKEFILES="lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile nt/Makefile"
5366
5367 AC_CONFIG_FILES([Makefile lib/Makefile lib-src/Makefile oldXMenu/Makefile \
5368        doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile \
5369        doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile \
5370        leim/Makefile nextstep/Makefile nt/Makefile])
5371
5372 dnl test/ is not present in release tarfiles.
5373 opt_makefile=test/Makefile
5374
5375 if test -f "$srcdir/$opt_makefile.in"; then
5376   SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5377   dnl Again, it's best not to use a variable.  Though you can add
5378   dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5379   AC_CONFIG_FILES([test/Makefile])
5380 fi
5381
5382
5383 dnl The admin/ directory used to be excluded from tarfiles.
5384 if test -d $srcdir/admin; then
5385   SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5386   AC_CONFIG_FILES([admin/charsets/Makefile])
5387   AC_CONFIG_FILES([admin/unidata/Makefile])
5388   AC_CONFIG_FILES([admin/grammars/Makefile])
5389 fi                              dnl -d admin
5390
5391
5392 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5393
5394 AC_SUBST(SUBDIR_MAKEFILES_IN)
5395
5396 dnl You might wonder (I did) why epaths.h is generated by running make,
5397 dnl rather than just letting configure generate it from epaths.in.
5398 dnl One reason is that the various paths are not fully expanded (see above);
5399 dnl eg gamedir=${prefix}/var/games/emacs.
5400 dnl Secondly, the GNU Coding standards require that one should be able
5401 dnl to run 'make prefix=/some/where/else' and override the values set
5402 dnl by configure.  This also explains the 'move-if-change' test and
5403 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5404 AC_CONFIG_COMMANDS([src/epaths.h], [
5405 if test "${opsys}" = "mingw32"; then
5406   ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5407 else
5408   ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5409 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5410 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5411
5412 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5413 dnl is not yet set, sigh.  Or we could use ../$srcdir/src/.gdbinit,
5414 dnl or a symlink?
5415 AC_CONFIG_COMMANDS([src/.gdbinit], [
5416 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5417   AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5418 fi
5419 ])
5420
5421 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5422 dnl See comments for etc-refcards-emacsver.tex.
5423 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5424 dnl it is not quite the same.  But we are generating in $srcdir.
5425 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5426 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5427 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5428 ])
5429
5430 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5431 dnl then a directory etc/refcards is created in the build directory,
5432 dnl which is probably harmless, but confusing (in out-of-tree builds).
5433 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5434 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5435 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5436 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5437 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5438 ])
5439
5440 AC_OUTPUT
5441
5442 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])