* lisp/url/url.el (url-retrieve-synchronously): Doc fix. (Bug#23411)

[gnu-emacs] / configure.ac

diff --git a/configure.ac b/configure.ac
index 1cddeb1e45ff434d630261f3e639911228816a05..8f8c38bd83265dd8fab9234fabf5fd94f0189442 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@ dnl     autoconf
 dnl in the directory containing this script.
 dnl If you changed any AC_DEFINES, also run autoheader.
 dnl
 dnl in the directory containing this script.
 dnl If you changed any AC_DEFINES, also run autoheader.
 dnl

-dnl Copyright (C) 1994-1996, 1999-2015 Free Software Foundation, Inc.
+dnl Copyright (C) 1994-1996, 1999-2016 Free Software Foundation, Inc.

 dnl
 dnl  This file is part of GNU Emacs.
 dnl
 dnl
 dnl  This file is part of GNU Emacs.
 dnl


@@ -23,7 +23,7 @@ dnl  along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
 AC_PREREQ(2.65)
 dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
 
 AC_PREREQ(2.65)
 dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.

-AC_INIT(GNU Emacs, 25.0.50, bug-gnu-emacs@gnu.org)
+AC_INIT(GNU Emacs, 25.0.93, bug-gnu-emacs@gnu.org)

 
 dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
 dnl and then quoted again for a C string.  Separate options with spaces.
 
 dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
 dnl and then quoted again for a C string.  Separate options with spaces.


@@ -33,7 +33,7 @@ emacs_config_options=
 optsep=
 dnl This is the documented way to record the args passed to configure,
 dnl rather than $ac_configure_args.
 optsep=
 dnl This is the documented way to record the args passed to configure,
 dnl rather than $ac_configure_args.

-for opt in ${1+"$@"} CFLAGS CPPFLAGS LDFLAGS; do
+for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do

   case $opt in
     -n | --no-create | --no-recursion)
       continue ;;
   case $opt in
     -n | --no-create | --no-recursion)
       continue ;;


@@ -316,7 +316,7 @@ this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
          with_x_toolkit=$val
 ])
 
          with_x_toolkit=$val
 ])
 

-OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit)])
+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])

 if test "$with_wide_int" = yes; then
   AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
 fi
 if test "$with_wide_int" = yes; then
   AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
 fi


@@ -330,6 +330,7 @@ OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])

+OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])

 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
 
 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
 


@@ -340,7 +341,9 @@ OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])

-OPTION_DEFAULT_OFF([ns],[use NeXTstep (Cocoa or GNUstep) windowing system])
+AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
+[use Nextstep (OS X Cocoa or GNUstep) windowing system.
+On by default on Mac OS X.])],[],[with_ns=maybe])

 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
 
 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
 
 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])


@@ -350,25 +353,30 @@ OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])

+OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])

 
 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
 
 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],

- [use a file notification library (LIB one of: yes, gfile, inotify, w32, no)])],
+ [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],

  [ case "${withval}" in
     y | ye | yes )     val=yes ;;
     n | no )           val=no  ;;
  [ case "${withval}" in
     y | ye | yes )     val=yes ;;
     n | no )           val=no  ;;

-    g | gf | gfi | gfil | gfile )      val=gfile ;;

     i | in | ino | inot | inoti | inotif | inotify )   val=inotify ;;
     i | in | ino | inot | inoti | inotif | inotify )   val=inotify ;;

+    k | kq | kqu | kque | kqueu | kqueue )     val=kqueue ;;
+    g | gf | gfi | gfil | gfile )      val=gfile ;;

     w | w3 | w32 )     val=w32 ;;
     * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
     w | w3 | w32 )     val=w32 ;;
     * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;

-this option's value should be 'yes', 'no', 'gfile', 'inotify' or 'w32'.
+this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.

 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,

-otherwise for the first of 'gfile' or 'inotify' that is usable.])
+otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])

     ;;
    esac
    with_file_notification=$val
  ],
  [with_file_notification=$with_features])
 
     ;;
    esac
    with_file_notification=$val
  ],
  [with_file_notification=$with_features])
 

+OPTION_DEFAULT_OFF([xwidgets],
+  [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
+

 ## For the times when you want to build Emacs but don't have
 ## a suitable makeinfo, and can live without the manuals.
 dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
 ## For the times when you want to build Emacs but don't have
 ## a suitable makeinfo, and can live without the manuals.
 dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html


@@ -398,7 +406,7 @@ gamegroup=
 case ${with_gameuser} in
   no) ;;
   "" | yes) gamegroup=games ;;
 case ${with_gameuser} in
   no) ;;
   "" | yes) gamegroup=games ;;

-  :*) gamegroup=`echo "${with_gameuser}" | sed -e "s/://"` ;;
+  :*) gamegroup=${with_gameuser#:} ;;

   *) gameuser=${with_gameuser} ;;
 esac
 
   *) gameuser=${with_gameuser} ;;
 esac
 


@@ -869,18 +877,19 @@ AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
 
 # When compiling with GCC, prefer -isystem to -I when including system
 # include files, to avoid generating useless diagnostics for the files.
 
 # When compiling with GCC, prefer -isystem to -I when including system
 # include files, to avoid generating useless diagnostics for the files.

-if test "$gl_gcc_warnings" != yes; then
+AS_IF([test "$gl_gcc_warnings" != yes],
+ [

   isystem='-I'
   isystem='-I'

-  if test "$emacs_cv_clang" = yes
-  then
+  AS_IF([test "$emacs_cv_clang" = yes],
+   [

      # Turn off some warnings if supported.
      gl_WARN_ADD([-Wno-switch])
      gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
      gl_WARN_ADD([-Wno-pointer-sign])
      gl_WARN_ADD([-Wno-string-plus-int])
      gl_WARN_ADD([-Wno-unknown-attributes])
      # Turn off some warnings if supported.
      gl_WARN_ADD([-Wno-switch])
      gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
      gl_WARN_ADD([-Wno-pointer-sign])
      gl_WARN_ADD([-Wno-string-plus-int])
      gl_WARN_ADD([-Wno-unknown-attributes])

-  fi
-else
+   ])
+ ],[

   isystem='-isystem '
 
   # This, $nw, is the list of warnings we disable.
   isystem='-isystem '
 
   # This, $nw, is the list of warnings we disable.


@@ -891,10 +900,9 @@ else
        # Old toolkits mishandle 'const'.
        nw="$nw -Wwrite-strings"
        ;;
        # Old toolkits mishandle 'const'.
        nw="$nw -Wwrite-strings"
        ;;

-    *)
-       gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
-       ;;

   esac
   esac

+  AS_IF([test -z "$nw"],
+    [gl_WARN_ADD([-Werror], [WERROR_CFLAGS])])

   AC_SUBST([WERROR_CFLAGS])
 
   nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
   AC_SUBST([WERROR_CFLAGS])
 
   nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings


@@ -925,10 +933,13 @@ else
   # option problematic.
   nw="$nw -Wsuggest-attribute=pure"
 
   # option problematic.
   nw="$nw -Wsuggest-attribute=pure"
 

+  # This part is merely for shortening the command line,
+  # since -Wall implies -Wswitch.
+  nw="$nw -Wswitch"
+

   # This part is merely for shortening the command line,
   # since -Wno-FOO needs to be added below regardless.
   nw="$nw -Wmissing-field-initializers"
   # This part is merely for shortening the command line,
   # since -Wno-FOO needs to be added below regardless.
   nw="$nw -Wmissing-field-initializers"

-  nw="$nw -Wswitch"

   nw="$nw -Wtype-limits"
   nw="$nw -Wunused-parameter"
 
   nw="$nw -Wtype-limits"
   nw="$nw -Wunused-parameter"
 


@@ -945,7 +956,6 @@ else
   gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
   gl_WARN_ADD([-Wno-sign-compare])     # Too many warnings for now
   gl_WARN_ADD([-Wno-type-limits])      # Too many warnings for now
   gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
   gl_WARN_ADD([-Wno-sign-compare])     # Too many warnings for now
   gl_WARN_ADD([-Wno-type-limits])      # Too many warnings for now

-  gl_WARN_ADD([-Wno-switch])           # Too many warnings for now

   gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
   gl_WARN_ADD([-Wno-format-nonliteral])
 
   gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
   gl_WARN_ADD([-Wno-format-nonliteral])
 


@@ -975,7 +985,7 @@ else
 
   gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
   AC_SUBST([GNULIB_WARN_CFLAGS])
 
   gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
   AC_SUBST([GNULIB_WARN_CFLAGS])

-fi
+ ])

 
 edit_cflags="
   s,///*,/,g
 
 edit_cflags="
   s,///*,/,g


@@ -1130,16 +1140,9 @@ AC_PATH_PROG(GZIP_PROG, gzip)
 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
    GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
 
 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
    GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
 

+PAXCTL_dumped=
+PAXCTL_notdumped=

 if test $opsys = gnu-linux; then
 if test $opsys = gnu-linux; then

-  AC_PATH_PROG(PAXCTL, paxctl,,
-    [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
-  if test "X$PAXCTL" != X; then
-    AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
-    AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
-      [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then AC_MSG_RESULT(yes)
-      else AC_MSG_RESULT(no); PAXCTL=""; fi])
-  fi
-

   if test "${SETFATTR+set}" != set; then
     AC_CACHE_CHECK([for setfattr],
       [emacs_cv_prog_setfattr],
   if test "${SETFATTR+set}" != set; then
     AC_CACHE_CHECK([for setfattr],
       [emacs_cv_prog_setfattr],


@@ -1150,6 +1153,7 @@ if test $opsys = gnu-linux; then
         emacs_cv_prog_setfattr=no
        fi])
     if test "$emacs_cv_prog_setfattr" = yes; then
         emacs_cv_prog_setfattr=no
        fi])
     if test "$emacs_cv_prog_setfattr" = yes; then

+      PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'

       SETFATTR=setfattr
     else
       SETFATTR=
       SETFATTR=setfattr
     else
       SETFATTR=


@@ -1158,6 +1162,32 @@ if test $opsys = gnu-linux; then
     AC_SUBST([SETFATTR])
   fi
 fi
     AC_SUBST([SETFATTR])
   fi
 fi

+case $opsys,$PAXCTL_notdumped in
+  gnu-linux, | netbsd,)
+    AC_PATH_PROG([PAXCTL], [paxctl], [],
+      [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
+    if test -n "$PAXCTL"; then
+      if test "$opsys" = netbsd; then
+       PAXCTL_dumped='$(PAXCTL) +a'
+       PAXCTL_notdumped=$PAXCTL_dumped
+      else
+       AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
+       AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
+         [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
+            AC_MSG_RESULT([yes])
+          else
+            AC_MSG_RESULT([no])
+            PAXCTL=
+          fi])
+       if test -n "$PAXCTL"; then
+         PAXCTL_dumped='$(PAXCTL) -zex'
+         PAXCTL_notdumped='$(PAXCTL) -r'
+       fi
+      fi
+    fi;;
+esac
+AC_SUBST([PAXCTL_dumped])
+AC_SUBST([PAXCTL_notdumped])

 
 ## Need makeinfo >= 4.7 (?) to build the manuals.
 if test "$MAKEINFO" != "no"; then
 
 ## Need makeinfo >= 4.7 (?) to build the manuals.
 if test "$MAKEINFO" != "no"; then


@@ -1697,15 +1727,17 @@ fi
 LD_SWITCH_X_SITE_RPATH=
 if test "${x_libraries}" != NONE; then
   if test -n "${x_libraries}"; then
 LD_SWITCH_X_SITE_RPATH=
 if test "${x_libraries}" != NONE; then
   if test -n "${x_libraries}"; then

-    LD_SWITCH_X_SITE=-L`echo ${x_libraries} | sed -e "s/:/ -L/g"`
-    LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`echo ${x_libraries} | sed -e "s/:/ -Wl,-rpath,/g"`
+    LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
+    LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
+      AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
+    `

   fi
   x_default_search_path=""
   x_search_path=${x_libraries}
   if test -z "${x_search_path}"; then
     x_search_path=/usr/lib
   fi
   fi
   x_default_search_path=""
   x_search_path=${x_libraries}
   if test -z "${x_search_path}"; then
     x_search_path=/usr/lib
   fi

-  for x_library in `echo ${x_search_path}: | \
+  for x_library in `AS_ECHO(["$x_search_path:"]) | \

                    sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
     x_search_path="\
 ${x_library}/X11/%L/%T/%N%C%S:\
                    sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
     x_search_path="\
 ${x_library}/X11/%L/%T/%N%C%S:\


@@ -1724,15 +1756,15 @@ fi
 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
 
 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
 
 if test "${x_includes}" != NONE && test -n "${x_includes}"; then

-  C_SWITCH_X_SITE="$isystem"`echo ${x_includes} | sed -e "s/:/ $isystem/g"`
+  C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`

 fi
 
 if test x"${x_includes}" = x; then
   bitmapdir=/usr/include/X11/bitmaps
 else
   # accumulate include directories that have X11 bitmap subdirectories
 fi
 
 if test x"${x_includes}" = x; then
   bitmapdir=/usr/include/X11/bitmaps
 else
   # accumulate include directories that have X11 bitmap subdirectories

-  bmd_acc="dummyval"
-  for bmd in `echo ${x_includes} | sed -e "s/:/ /g"`; do
+  bmd_acc=
+  for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do

     if test -d "${bmd}/X11/bitmaps"; then
       bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
     fi
     if test -d "${bmd}/X11/bitmaps"; then
       bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
     fi


@@ -1740,11 +1772,10 @@ else
       bmd_acc="${bmd_acc}:${bmd}/bitmaps"
     fi
   done
       bmd_acc="${bmd_acc}:${bmd}/bitmaps"
     fi
   done

-  if test ${bmd_acc} != "dummyval"; then
-    bitmapdir=`echo ${bmd_acc} | sed -e "s/^dummyval://"`
-  fi
+  bitmapdir=${bmd_acc#:}

 fi
 
 fi
 

+test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no

 HAVE_NS=no
 NS_GNUSTEP_CONFIG=no
 NS_IMPL_COCOA=no
 HAVE_NS=no
 NS_GNUSTEP_CONFIG=no
 NS_IMPL_COCOA=no


@@ -1771,11 +1802,23 @@ if test "${with_ns}" != no; then
   elif test -f $GNUSTEP_CONFIG_FILE; then
      NS_IMPL_GNUSTEP=yes
      dnl FIXME sourcing this several times in subshells seems inefficient.
   elif test -f $GNUSTEP_CONFIG_FILE; then
      NS_IMPL_GNUSTEP=yes
      dnl FIXME sourcing this several times in subshells seems inefficient.

-     GNUSTEP_SYSTEM_HEADERS="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_SYSTEM_HEADERS)"
-     GNUSTEP_SYSTEM_LIBRARIES="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_SYSTEM_LIBRARIES)"
+     GNUSTEP_SYSTEM_HEADERS=$(
+       . $GNUSTEP_CONFIG_FILE
+       AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
+     )
+     GNUSTEP_SYSTEM_LIBRARIES=$(
+       . $GNUSTEP_CONFIG_FILE
+       AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
+     )

      dnl I seemed to need these as well with GNUstep-startup 0.25.
      dnl I seemed to need these as well with GNUstep-startup 0.25.

-     GNUSTEP_LOCAL_HEADERS="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_LOCAL_HEADERS)"
-     GNUSTEP_LOCAL_LIBRARIES="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_LOCAL_LIBRARIES)"
+     GNUSTEP_LOCAL_HEADERS=$(
+       . $GNUSTEP_CONFIG_FILE
+       AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
+     )
+     GNUSTEP_LOCAL_LIBRARIES=$(
+       . $GNUSTEP_CONFIG_FILE
+       AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
+     )

      test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
        GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
      test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
      test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
        GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
      test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \


@@ -1815,8 +1858,9 @@ fail;
   CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
 
   AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
   CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
 
   AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],

-                 [AC_MSG_ERROR(['--with-ns' was specified, but the include
-  files are missing or cannot be compiled.])])
+                 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
+are required for a Nextstep build are missing or cannot be compiled.
+Either fix this, or re-configure with the option '--without-ns'.])])

 
   macfont_file=""
   if test "${NS_IMPL_COCOA}" = "yes"; then
 
   macfont_file=""
   if test "${NS_IMPL_COCOA}" = "yes"; then


@@ -2050,7 +2094,11 @@ if test "$window_system" = none && test "X$with_x" != "Xno"; then
    AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
    if test "$HAVE_XSERVER" = true ||
       test -n "$DISPLAY" ||
    AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
    if test "$HAVE_XSERVER" = true ||
       test -n "$DISPLAY" ||

-      test "`echo /usr/lib/libX11.*`" != "/usr/lib/libX11.*"; then
+      {
+        for emacs_libX11 in /usr/lib/libX11.*; do break; done
+        test "$emacs_libX11" != '/usr/lib/libX11.*'
+      }
+   then

         AC_MSG_ERROR([You seem to be running X, but no X development libraries
 were found.  You should install the relevant development files for X
 and for the toolkit you want, such as Gtk+ or Motif.  Also make
         AC_MSG_ERROR([You seem to be running X, but no X development libraries
 were found.  You should install the relevant development files for X
 and for the toolkit you want, such as Gtk+ or Motif.  Also make


@@ -2079,8 +2127,8 @@ AC_CACHE_CHECK(
          [[malloc_set_state (malloc_get_state ());
            __after_morecore_hook = hook;
            __malloc_initialize_hook = hook;]])],
          [[malloc_set_state (malloc_get_state ());
            __after_morecore_hook = hook;
            __malloc_initialize_hook = hook;]])],

-       [emacs_cv_var_doug_lea_malloc=yes])])
-   fi
+       [emacs_cv_var_doug_lea_malloc=yes])
+   fi])

 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
 
 system_malloc=$emacs_cv_sanitize_address
 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
 
 system_malloc=$emacs_cv_sanitize_address


@@ -2175,7 +2223,6 @@ if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
   AC_CACHE_CHECK([for pthread library],
     [emacs_cv_pthread_lib],
     [emacs_cv_pthread_lib=no
   AC_CACHE_CHECK([for pthread library],
     [emacs_cv_pthread_lib],
     [emacs_cv_pthread_lib=no

-     OLD_CPPFLAGS=$CPPFLAGS

      OLD_LIBS=$LIBS
      for emacs_pthread_lib in 'none needed' -lpthread; do
        case $emacs_pthread_lib in
      OLD_LIBS=$LIBS
      for emacs_pthread_lib in 'none needed' -lpthread; do
        case $emacs_pthread_lib in


@@ -2204,8 +2251,7 @@ if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
        if test "$emacs_cv_pthread_lib" != no; then
         break
        fi
        if test "$emacs_cv_pthread_lib" != no; then
         break
        fi

-     done
-     CPPFLAGS=$OLD_CPPFLAGS])
+     done])

   if test "$emacs_cv_pthread_lib" != no; then
     AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
     case $emacs_cv_pthread_lib in
   if test "$emacs_cv_pthread_lib" != no; then
     AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
     case $emacs_cv_pthread_lib in


@@ -2540,6 +2586,26 @@ if test "${HAVE_GTK}" = "yes"; then
  term_header=gtkutil.h
 fi
 
  term_header=gtkutil.h
 fi
 

+
+dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
+HAVE_XWIDGETS=no
+XWIDGETS_OBJ=
+if test "$with_xwidgets" != "no"; then
+  test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
+    AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
+
+  WEBKIT_REQUIRED=1.4.0
+  WEBKIT_MODULES="webkitgtk-3.0 >= $WEBKIT_REQUIRED"
+  EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
+  HAVE_XWIDGETS=$HAVE_WEBKIT
+  test $HAVE_XWIDGETS = yes ||
+    AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
+
+  XWIDGETS_OBJ=xwidget.o
+  AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
+fi
+AC_SUBST(XWIDGETS_OBJ)
+

 CFLAGS=$OLD_CFLAGS
 LIBS=$OLD_LIBS
 
 CFLAGS=$OLD_CFLAGS
 LIBS=$OLD_LIBS
 


@@ -2667,12 +2733,6 @@ AC_SUBST(LIBGNUTLS_CFLAGS)
 NOTIFY_OBJ=
 NOTIFY_SUMMARY=no
 
 NOTIFY_OBJ=
 NOTIFY_SUMMARY=no
 

-dnl FIXME?  Don't auto-detect on NS, but do allow someone to specify
-dnl a particular library.  This doesn't make much sense?
-if test "${with_ns}" = yes && test ${with_file_notification} = yes; then
-  with_file_notification=no
-fi
-

 dnl MS Windows native file monitor is available for mingw32 only.
 case $with_file_notification,$opsys in
   w32,cygwin)
 dnl MS Windows native file monitor is available for mingw32 only.
 case $with_file_notification,$opsys in
   w32,cygwin)


@@ -2689,22 +2749,7 @@ case $with_file_notification,$opsys in
     fi ;;
 esac
 
     fi ;;
 esac
 

-dnl g_file_monitor exists since glib 2.18.  G_FILE_MONITOR_EVENT_MOVED
-dnl has been added in glib 2.24.  It has been tested under
-dnl GNU/Linux only.  We take precedence over inotify, but this makes
-dnl only sense when glib has been compiled with inotify support.  How
-dnl to check?
-case $with_file_notification,$NOTIFY_OBJ in
-  gfile, | yes,)
-    EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
-    if test "$HAVE_GFILENOTIFY" = "yes"; then
-       AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
-       NOTIFY_OBJ=gfilenotify.o
-       NOTIFY_SUMMARY="yes -lgio (gfile)"
-    fi ;;
-esac
-
-dnl inotify is only available on GNU/Linux.
+dnl inotify is available only on GNU/Linux.

 case $with_file_notification,$NOTIFY_OBJ in
   inotify, | yes,)
     AC_CHECK_HEADER(sys/inotify.h)
 case $with_file_notification,$NOTIFY_OBJ in
   inotify, | yes,)
     AC_CHECK_HEADER(sys/inotify.h)


@@ -2718,6 +2763,47 @@ case $with_file_notification,$NOTIFY_OBJ in
     fi ;;
 esac
 
     fi ;;
 esac
 

+dnl kqueue is available on BSD-like systems.
+case $with_file_notification,$NOTIFY_OBJ in
+  kqueue,* | yes,)
+    EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
+    if test "$HAVE_KQUEUE" = "yes"; then
+       AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
+       CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
+       NOTIFY_CFLAGS=$KQUEUE_CFLAGS
+       NOTIFY_LIBS=$KQUEUE_LIBS
+       NOTIFY_OBJ=kqueue.o
+       NOTIFY_SUMMARY="yes -lkqueue"
+    else
+       AC_SEARCH_LIBS(kqueue, [])
+       if test "$ac_cv_search_kqueue" != no; then
+         AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
+        NOTIFY_OBJ=kqueue.o
+        NOTIFY_SUMMARY="yes (kqueue)"
+       fi
+    fi ;;
+esac
+
+dnl g_file_monitor exists since glib 2.18.  G_FILE_MONITOR_EVENT_MOVED
+dnl has been added in glib 2.24.  It has been tested under
+dnl GNU/Linux only.
+case $with_file_notification,$NOTIFY_OBJ in
+  gfile,* | yes,)
+    if test "${HAVE_NS}" = yes; then
+       AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
+Consider kqueue instead.])
+    else
+       EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
+       if test "$HAVE_GFILENOTIFY" = "yes"; then
+         AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
+         NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
+         NOTIFY_LIBS=$GFILENOTIFY_LIBS
+         NOTIFY_OBJ=gfilenotify.o
+         NOTIFY_SUMMARY="yes -lgio (gfile)"
+       fi
+    fi ;;
+esac
+

 case $with_file_notification,$NOTIFY_OBJ in
   yes,* | no,* | *,?*) ;;
   *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
 case $with_file_notification,$NOTIFY_OBJ in
   yes,* | no,* | *,?*) ;;
   *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;


@@ -2726,9 +2812,9 @@ esac
 if test -n "$NOTIFY_OBJ"; then
    AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
 fi
 if test -n "$NOTIFY_OBJ"; then
    AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
 fi

+AC_SUBST(NOTIFY_CFLAGS)
+AC_SUBST(NOTIFY_LIBS)

 AC_SUBST(NOTIFY_OBJ)
 AC_SUBST(NOTIFY_OBJ)

-AC_SUBST(GFILENOTIFY_CFLAGS)
-AC_SUBST(GFILENOTIFY_LIBS)

 
 dnl Do not put whitespace before the #include statements below.
 dnl Older compilers (eg sunos4 cc) choke on it.
 
 dnl Do not put whitespace before the #include statements below.
 dnl Older compilers (eg sunos4 cc) choke on it.


@@ -3075,6 +3161,40 @@ AC_SUBST(LIBOTF_LIBS)
 AC_SUBST(M17N_FLT_CFLAGS)
 AC_SUBST(M17N_FLT_LIBS)
 
 AC_SUBST(M17N_FLT_CFLAGS)
 AC_SUBST(M17N_FLT_LIBS)
 

+HAVE_CAIRO=no
+if test "${HAVE_X11}" = "yes"; then
+  if test "${with_cairo}" != "no"; then
+    CAIRO_REQUIRED=1.12.0
+    CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
+    EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
+    if test $HAVE_CAIRO = yes; then
+      AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
+    else
+      AC_MSG_ERROR([cairo requested but not found.])
+    fi
+
+    CFLAGS="$CFLAGS $CAIRO_CFLAGS"
+    LIBS="$LIBS $CAIRO_LIBS"
+    AC_SUBST(CAIRO_CFLAGS)
+    AC_SUBST(CAIRO_LIBS)
+  fi
+fi
+
+if test "${HAVE_X11}" = "yes"; then
+  AC_CHECK_HEADER(X11/Xlib-xcb.h,
+    AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
+  if test "${HAVE_XCB}" = "yes"; then
+    AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
+    if test "${HAVE_X11_XCB}" = "yes"; then
+      AC_DEFINE(USE_XCB, 1,
+[Define to 1 if you have the XCB library and X11-XCB library for mixed
+   X11/XCB programming.])
+      XCB_LIBS="-lX11-xcb -lxcb"
+      AC_SUBST(XCB_LIBS)
+    fi
+  fi
+fi
+

 ### Use -lXpm if available, unless '--with-xpm=no'.
 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
 ### In the Cygwin-w32 build, we need to use /usr/include/noX/X11/xpm.h
 ### Use -lXpm if available, unless '--with-xpm=no'.
 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
 ### In the Cygwin-w32 build, we need to use /usr/include/noX/X11/xpm.h


@@ -3230,6 +3350,53 @@ if test "${HAVE_ZLIB}" = "yes"; then
 fi
 AC_SUBST(LIBZ)
 
 fi
 AC_SUBST(LIBZ)
 

+### Dynamic modules support
+LIBMODULES=
+HAVE_MODULES=no
+MODULES_OBJ=
+MODULES_SUFFIX=
+if test "${with_modules}" != "no"; then
+  case $opsys in
+    gnu|gnu-linux)
+      LIBMODULES="-ldl"
+      MODULES_SUFFIX=".so"
+      HAVE_MODULES=yes
+      ;;
+    cygwin|mingw32)
+      MODULES_SUFFIX=".dll"
+      HAVE_MODULES=yes
+      ;;
+    darwin)
+      MODULES_SUFFIX=".so"
+      HAVE_MODULES=yes
+      ;;
+    *)
+      # BSD systems have dlopen in libc.
+      AC_CHECK_FUNC([dlopen],
+        [MODULES_SUFFIX=".so"
+         HAVE_MODULES=yes])
+      ;;
+  esac
+
+  if test "${HAVE_MODULES}" = no; then
+    AC_MSG_ERROR([Dynamic modules are not supported on your system])
+  else
+    SAVE_LIBS=$LIBS
+    LIBS="$LIBS $LIBMODULES"
+    AC_CHECK_FUNCS([dladdr dlfunc])
+    LIBS=$SAVE_LIBS
+  fi
+fi
+
+if test "${HAVE_MODULES}" = yes; then
+   MODULES_OBJ="dynlib.o emacs-module.o"
+   AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
+   AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
+     [System extension for dynamic libraries])
+fi
+AC_SUBST(MODULES_OBJ)
+AC_SUBST(LIBMODULES)
+

 ### Use -lpng if available, unless '--with-png=no'.
 HAVE_PNG=no
 LIBPNG=
 ### Use -lpng if available, unless '--with-png=no'.
 HAVE_PNG=no
 LIBPNG=


@@ -3450,14 +3617,6 @@ if test "${HAVE_X11}" = "yes"; then
     fi
   fi
   if test $HAVE_XRANDR = yes; then
     fi
   fi
   if test $HAVE_XRANDR = yes; then

-    SAVE_CFLAGS="$CFLAGS"
-    SAVE_LIBS="$LIBS"
-    CFLAGS="$XRANDR_CFLAGS $CFLAGS"
-    LIBS="$XRANDR_LIBS $LIBS"
-    AC_CHECK_FUNCS(XRRGetOutputPrimary XRRGetScreenResourcesCurrent)
-    CFLAGS="$SAVE_CFLAGS"
-    LIBS="$SAVE_LIBS"
-

     AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
   fi
 fi
     AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
   fi
 fi


@@ -3515,6 +3674,14 @@ if test "${with_xml2}" != "no"; then
   # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
   if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
     SAVE_CPPFLAGS="$CPPFLAGS"
   # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
   if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
     SAVE_CPPFLAGS="$CPPFLAGS"

+    if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
+      dnl /usr/include is not found.  Try Xcode SDK dir if it is sane.
+      xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
+      case $xcsdkdir in
+       *[[\\\"\#\$\&\'\`$am_lf\ \      ]]*)
+       xcsdkdir="" ;;
+      esac
+    fi

     CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
     AC_CHECK_HEADER(libxml/HTMLparser.h,
       [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
     CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
     AC_CHECK_HEADER(libxml/HTMLparser.h,
       [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,


@@ -3653,14 +3820,8 @@ getpwent endpwent getgrent endgrent \
 cfmakeraw cfsetspeed copysign __executable_start log2)
 LIBS=$OLD_LIBS
 
 cfmakeraw cfsetspeed copysign __executable_start log2)
 LIBS=$OLD_LIBS
 

-dnl No need to check for aligned_alloc and posix_memalign if using
-dnl gmalloc.o, as it supplies them, unless we're using hybrid_malloc.
-dnl Don't use these functions on Darwin as they are incompatible with
-dnl unexmacosx.c.
-if (test -z "$GMALLOC_OBJ" || test "$hybrid_malloc" = yes) \
-  && test "$opsys" != darwin; then
-  AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
-fi
+dnl No need to check for posix_memalign if aligned_alloc works.
+AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])

 
 dnl Cannot use AC_CHECK_FUNCS
 AC_CACHE_CHECK([for __builtin_unwind_init],
 
 dnl Cannot use AC_CHECK_FUNCS
 AC_CACHE_CHECK([for __builtin_unwind_init],


@@ -3976,7 +4137,9 @@ AC_SUBST(KRB4LIB)
 
 AC_CHECK_HEADERS(valgrind/valgrind.h)
 
 
 AC_CHECK_HEADERS(valgrind/valgrind.h)
 

-AC_CHECK_FUNCS_ONCE(tzalloc tzset)
+AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
+
+AC_CHECK_FUNCS_ONCE(tzset)

 
 ok_so_far=yes
 AC_CHECK_FUNC(socket, , ok_so_far=no)
 
 ok_so_far=yes
 AC_CHECK_FUNC(socket, , ok_so_far=no)


@@ -4009,8 +4172,8 @@ OLDCFLAGS="$CFLAGS"
 OLDLIBS="$LIBS"
 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
 OLDLIBS="$LIBS"
 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"

-CFLAGS="$CFLAGS $GFILENOTIFY_CFLAGS"
-LIBS="$LIBS $GFILENOTIFY_LIBS"
+CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
+LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"

 AC_MSG_CHECKING([whether GLib is linked in])
 AC_LINK_IFELSE([AC_LANG_PROGRAM(
        [[#include <glib.h>
 AC_MSG_CHECKING([whether GLib is linked in])
 AC_LINK_IFELSE([AC_LANG_PROGRAM(
        [[#include <glib.h>


@@ -4308,24 +4471,11 @@ case $opsys in
     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
     ;;
 
     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
     ;;
 

-  dnl FIXME?  Maybe use same as freebsd - see bug#12040.
-  darwin )
-    AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
-    dnl Not used, because PTY_ITERATION is defined.
-    AC_DEFINE(FIRST_PTY_LETTER, ['p'])
-    dnl Note that openpty may fork via grantpt on Mac OS X 10.4/Darwin 8.
-    dnl But we don't have to block SIGCHLD because it is blocked in the
-    dnl implementation of grantpt.
-    AC_DEFINE(PTY_OPEN, [ do { int slave; if (openpty (&fd, &slave, pty_name, NULL, NULL) == -1) fd = -1; else emacs_close (slave); } while (false)])
-    AC_DEFINE(PTY_NAME_SPRINTF, [])
-    AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
-    ;;
-

   gnu | openbsd )
     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
     ;;
 
   gnu | openbsd )
     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
     ;;
 

-  gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | nacl )
+  gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )

     dnl if HAVE_GRANTPT
     if test "x$ac_cv_func_grantpt" = xyes; then
       AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
     dnl if HAVE_GRANTPT
     if test "x$ac_cv_func_grantpt" = xyes; then
       AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])


@@ -4377,14 +4527,17 @@ case $opsys in
     ;;
 
   sol2* )
     ;;
 
   sol2* )

-    dnl On SysVr4, grantpt(3) forks a subprocess, so keep sigchld_handler()
+    dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
+    dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler

     dnl from intercepting that death.  If any child but grantpt's should die
     dnl within, it should be caught after sigrelse(2).
     dnl from intercepting that death.  If any child but grantpt's should die
     dnl within, it should be caught after sigrelse(2).

+    AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])

     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); }])
     ;;
 
   unixware )
     dnl Comments are as per sol2*.
     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); }])
     ;;
 
   unixware )
     dnl Comments are as per sol2*.

+    AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])

     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); }])
     ;;
 esac
     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); }])
     ;;
 esac


@@ -4397,7 +4550,7 @@ case $opsys in
     AC_DEFINE(FIRST_PTY_LETTER, ['z'])
     AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
     dnl Push various streams modules onto a PTY channel.  Used in process.c.
     AC_DEFINE(FIRST_PTY_LETTER, ['z'])
     AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
     dnl Push various streams modules onto a PTY channel.  Used in process.c.

-    AC_DEFINE(SETUP_SLAVE_PTY, [if (ioctl (xforkin, I_PUSH, "ptem") == -1) fatal ("ioctl I_PUSH ptem"); if (ioctl (xforkin, I_PUSH, "ldterm") == -1) fatal ("ioctl I_PUSH ldterm"); if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) fatal ("ioctl I_PUSH ttcompat");], [How to set up a slave PTY, if needed.])
+    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.])

     ;;
 esac
 
     ;;
 esac
 


@@ -4529,14 +4682,11 @@ if test $emacs_cv_func_sigsetjmp = yes; then
     [Define to 1 if sigsetjmp and siglongjmp work.])
 fi
 
     [Define to 1 if sigsetjmp and siglongjmp work.])
 fi
 

-# We need all of these features to handle C stack overflows.
-if test "$ac_cv_header_sys_resource_h" = "yes" &&
-   test "$ac_cv_func_getrlimit" = "yes" &&
-   test "$emacs_cv_func_sigsetjmp" = "yes" &&
-   test "$emacs_cv_alternate_stack" = yes; then
-  AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
-    [Define to 1 if C stack overflow can be handled in some cases.])
-fi
+case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
+  yes,yes,* | *,*,mingw32)
+    AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
+      [Define to 1 if C stack overflow can be handled in some cases.]);;
+esac

 
 case $opsys in
   sol2* | unixware )
 
 case $opsys in
   sol2* | unixware )


@@ -4692,16 +4842,18 @@ CPPFLAGS="$REAL_CPPFLAGS"
 LIBS="$REAL_LIBS"
 
 ## Hack to detect a buggy GCC version.
 LIBS="$REAL_LIBS"
 
 ## Hack to detect a buggy GCC version.

-if test "x$GCC" = xyes \
-   && test x"`$CC --version 2> /dev/null | grep 'gcc.* 4.5.0'`" != x \
-   && test x"`echo $CFLAGS | grep '\-O@<:@23@:>@'`" != x \
-   && test x"`echo $CFLAGS | grep '\-fno-optimize-sibling-calls'`" = x; then
-   AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS'.])
+if test "$GCC" = yes && \
+   $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
+  case $CFLAGS in
+    *-fno-optimize-sibling-calls*) ;;
+    *-O@<:@23@:>@*)
+      AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
+  esac

 fi
 
 version=$PACKAGE_VERSION
 
 fi
 
 version=$PACKAGE_VERSION
 

-copyright="Copyright (C) 2015 Free Software Foundation, Inc."
+copyright="Copyright (C) 2016 Free Software Foundation, Inc."

 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
   [Short copyright string for this version of Emacs.])
 AC_SUBST(copyright)
 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
   [Short copyright string for this version of Emacs.])
 AC_SUBST(copyright)


@@ -4776,7 +4928,9 @@ if test "${HAVE_X_WINDOWS}" = "yes" ; then
   XMENU_OBJ=xmenu.o
   XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
   FONT_OBJ=xfont.o
   XMENU_OBJ=xmenu.o
   XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
   FONT_OBJ=xfont.o

-  if test "$HAVE_XFT" = "yes"; then
+  if test "$HAVE_CAIRO" = "yes"; then
+    FONT_OBJ="ftfont.o ftcrfont.o"
+  elif test "$HAVE_XFT" = "yes"; then

     FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
   elif test "$HAVE_FREETYPE" = "yes"; then
     FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
     FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
   elif test "$HAVE_FREETYPE" = "yes"; then
     FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"


@@ -4825,6 +4979,9 @@ case "$USE_X_TOOLKIT" in
   LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
   none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
 esac
   LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
   none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
 esac

+if test "$HAVE_XWIDGETS" = "yes"; then
+  TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
+fi

 AC_SUBST(TOOLKIT_LIBW)
 
 if test "${opsys}" != "mingw32"; then
 AC_SUBST(TOOLKIT_LIBW)
 
 if test "${opsys}" != "mingw32"; then


@@ -4948,7 +5105,7 @@ LIBS=$SAVE_LIBS
 if test "${opsys}" = "mingw32"; then
   CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
   # Remove unneeded switches from the value of CC that goes to Makefiles
 if test "${opsys}" = "mingw32"; then
   CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
   # Remove unneeded switches from the value of CC that goes to Makefiles

-  CC=`echo $CC | sed -e "s,$GCC_TEST_OPTIONS,,"`
+  CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`

 fi
 
 case "$opsys" in
 fi
 
 case "$opsys" in


@@ -5045,15 +5202,15 @@ AC_SUBST(WINDOW_SYSTEM_OBJ)
 
 AH_TOP([/* GNU Emacs site configuration template file.
 
 
 AH_TOP([/* GNU Emacs site configuration template file.
 

-Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2015
+Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2016

   Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
 GNU Emacs is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
   Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
 GNU Emacs is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.

 
 GNU Emacs is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 
 GNU Emacs is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of


@@ -5096,7 +5253,8 @@ else
   ACL_SUMMARY=no
 fi
 
   ACL_SUMMARY=no
 fi
 

-echo "
+emacs_standard_dirs='Standard dirs'
+AS_ECHO(["

 Configured for '${canonical}'.
 
   Where should the build process find the source code?    ${srcdir}
 Configured for '${canonical}'.
 
   Where should the build process find the source code?    ${srcdir}


@@ -5105,86 +5263,88 @@ Configured for '${canonical}'.
   Should Emacs use a relocating allocator for buffers?    ${REL_ALLOC}
   Should Emacs use mmap(2) for buffer allocation?         $use_mmap_for_buffers
   What window system should Emacs use?                    ${window_system}
   Should Emacs use a relocating allocator for buffers?    ${REL_ALLOC}
   Should Emacs use mmap(2) for buffer allocation?         $use_mmap_for_buffers
   What window system should Emacs use?                    ${window_system}

-  What toolkit should Emacs use?                          ${USE_X_TOOLKIT}"
-
-if test -n "${x_includes}"; then
-echo "  Where do we find X Windows header files?                ${x_includes}"
-else
-echo "  Where do we find X Windows header files?                Standard dirs"
-fi
-if test -n "${x_libraries}"; then
-echo "  Where do we find X Windows libraries?                   ${x_libraries}"
-else
-echo "  Where do we find X Windows libraries?                   Standard dirs"
-fi
+  What toolkit should Emacs use?                          ${USE_X_TOOLKIT}
+  Where do we find X Windows header files?                ${x_includes:-$emacs_standard_dirs}
+  Where do we find X Windows libraries?                   ${x_libraries:-$emacs_standard_dirs}"])

 
 optsep=
 emacs_config_features=
 
 optsep=
 emacs_config_features=

-for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS \
+for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \

   GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
   GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \

-  LIBOTF XFT ZLIB; do
+  LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT X11 NS MODULES \
+  XWIDGETS; do

 
     case $opt in
       NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
 
     case $opt in
       NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;

+      TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;

       *) eval val=\${HAVE_$opt} ;;
     esac
       *) eval val=\${HAVE_$opt} ;;
     esac

-    test x"$val" = xno && continue
+    case x$val in
+      xno|xnone|x) continue ;;
+    esac
+    case $opt in
+      X_TOOLKIT)
+        case $val in
+          GTK*|LUCID|MOTIF) opt=$val ;;
+          *) continue ;;
+        esac
+      ;;
+    esac

     AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
     optsep=' '
 done
 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
   [Summary of some of the main features enabled by configure.])
 
     AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
     optsep=' '
 done
 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
   [Summary of some of the main features enabled by configure.])
 

-echo "  Does Emacs use -lXaw3d?                                 ${HAVE_XAW3D}"
-echo "  Does Emacs use -lXpm?                                   ${HAVE_XPM}"
-echo "  Does Emacs use -ljpeg?                                  ${HAVE_JPEG}"
-echo "  Does Emacs use -ltiff?                                  ${HAVE_TIFF}"
-echo "  Does Emacs use a gif library?                           ${HAVE_GIF} $LIBGIF"
-echo "  Does Emacs use a png library?                           ${HAVE_PNG} $LIBPNG"
-echo "  Does Emacs use -lrsvg-2?                                ${HAVE_RSVG}"
-echo "  Does Emacs use imagemagick?                             ${HAVE_IMAGEMAGICK}"
-
-echo "  Does Emacs support sound?                               ${HAVE_SOUND}"
-
-echo "  Does Emacs use -lgpm?                                   ${HAVE_GPM}"
-echo "  Does Emacs use -ldbus?                                  ${HAVE_DBUS}"
-echo "  Does Emacs use -lgconf?                                 ${HAVE_GCONF}"
-echo "  Does Emacs use GSettings?                               ${HAVE_GSETTINGS}"
-echo "  Does Emacs use a file notification library?             ${NOTIFY_SUMMARY}"
-echo "  Does Emacs use access control lists?                    ${ACL_SUMMARY}"
-echo "  Does Emacs use -lselinux?                               ${HAVE_LIBSELINUX}"
-echo "  Does Emacs use -lgnutls?                                ${HAVE_GNUTLS}"
-echo "  Does Emacs use -lxml2?                                  ${HAVE_LIBXML2}"
-
-echo "  Does Emacs use -lfreetype?                              ${HAVE_FREETYPE}"
-echo "  Does Emacs use -lm17n-flt?                              ${HAVE_M17N_FLT}"
-echo "  Does Emacs use -lotf?                                   ${HAVE_LIBOTF}"
-echo "  Does Emacs use -lxft?                                   ${HAVE_XFT}"
-echo "  Does Emacs directly use zlib?                           ${HAVE_ZLIB}"
-
-echo "  Does Emacs use toolkit scroll bars?                     ${USE_TOOLKIT_SCROLL_BARS}"
-echo
+AS_ECHO(["  Does Emacs use -lXaw3d?                                 ${HAVE_XAW3D}
+  Does Emacs use -lXpm?                                   ${HAVE_XPM}
+  Does Emacs use -ljpeg?                                  ${HAVE_JPEG}
+  Does Emacs use -ltiff?                                  ${HAVE_TIFF}
+  Does Emacs use a gif library?                           ${HAVE_GIF} $LIBGIF
+  Does Emacs use a png library?                           ${HAVE_PNG} $LIBPNG
+  Does Emacs use -lrsvg-2?                                ${HAVE_RSVG}
+  Does Emacs use cairo?                                   ${HAVE_CAIRO}
+  Does Emacs use imagemagick?                             ${HAVE_IMAGEMAGICK}
+  Does Emacs support sound?                               ${HAVE_SOUND}
+  Does Emacs use -lgpm?                                   ${HAVE_GPM}
+  Does Emacs use -ldbus?                                  ${HAVE_DBUS}
+  Does Emacs use -lgconf?                                 ${HAVE_GCONF}
+  Does Emacs use GSettings?                               ${HAVE_GSETTINGS}
+  Does Emacs use a file notification library?             ${NOTIFY_SUMMARY}
+  Does Emacs use access control lists?                    ${ACL_SUMMARY}
+  Does Emacs use -lselinux?                               ${HAVE_LIBSELINUX}
+  Does Emacs use -lgnutls?                                ${HAVE_GNUTLS}
+  Does Emacs use -lxml2?                                  ${HAVE_LIBXML2}
+  Does Emacs use -lfreetype?                              ${HAVE_FREETYPE}
+  Does Emacs use -lm17n-flt?                              ${HAVE_M17N_FLT}
+  Does Emacs use -lotf?                                   ${HAVE_LIBOTF}
+  Does Emacs use -lxft?                                   ${HAVE_XFT}
+  Does Emacs directly use zlib?                           ${HAVE_ZLIB}
+  Does Emacs have dynamic modules support?                ${HAVE_MODULES}
+  Does Emacs use toolkit scroll bars?                     ${USE_TOOLKIT_SCROLL_BARS}
+  Does Emacs support Xwidgets (requires gtk3)?            ${HAVE_XWIDGETS}
+"])

 
 if test -n "${EMACSDATA}"; then
 
 if test -n "${EMACSDATA}"; then

-   echo "  Environment variable EMACSDATA set to:                  $EMACSDATA"
+   AS_ECHO(["  Environment variable EMACSDATA set to:                  $EMACSDATA"])

 fi
 if test -n "${EMACSDOC}"; then
 fi
 if test -n "${EMACSDOC}"; then

-   echo "  Environment variable EMACSDOC set to:                   $EMACSDOC"
+   AS_ECHO(["  Environment variable EMACSDOC set to:                   $EMACSDOC"])

 fi
 
 echo
 
 if test "$HAVE_NS" = "yes"; then
    echo
 fi
 
 echo
 
 if test "$HAVE_NS" = "yes"; then
    echo

-   echo "You must run \"${MAKE-make} install\" in order to test the built application.
+   AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.

 The installed application will go to nextstep/Emacs.app and can be
 The installed application will go to nextstep/Emacs.app and can be

-run or moved from there."
+run or moved from there."])

    if test "$EN_NS_SELF_CONTAINED" = "yes"; then
       echo "The application will be fully self-contained."
     else
    if test "$EN_NS_SELF_CONTAINED" = "yes"; then
       echo "The application will be fully self-contained."
     else

-      echo "The lisp resources for the application will be installed under ${prefix}.
+      AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.

 You may need to run \"${MAKE-make} install\" with sudo.  The application will fail
 You may need to run \"${MAKE-make} install\" with sudo.  The application will fail

-to run if these resources are not installed."
+to run if these resources are not installed."])

    fi
    echo
 fi
    fi
    echo
 fi


@@ -5198,10 +5358,12 @@ if test "${opsys}" = "cygwin"; then
 fi
 
 # Remove any trailing slashes in these variables.
 fi
 
 # Remove any trailing slashes in these variables.

-[test "${prefix}" != NONE &&
-  prefix=`echo "${prefix}" | sed 's,\([^/]\)/*$,\1,'`
-test "${exec_prefix}" != NONE &&
-  exec_prefix=`echo "${exec_prefix}" | sed 's,\([^/]\)/*$,\1,'`]
+case $prefix in
+  */) prefix=`AS_DIRNAME(["$prefix."])`;;
+esac
+case $exec_prefix in
+  */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
+esac

 
 if test "$HAVE_NS" = "yes"; then
   if test "$NS_IMPL_GNUSTEP" = yes; then
 
 if test "$HAVE_NS" = "yes"; then
   if test "$NS_IMPL_GNUSTEP" = yes; then


@@ -5247,7 +5409,8 @@ fi
 
 dnl The admin/ directory used to be excluded from tarfiles.
 if test -d $srcdir/admin; then
 
 dnl The admin/ directory used to be excluded from tarfiles.
 if test -d $srcdir/admin; then

-  SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/unidata/Makefile admin/grammars/Makefile"
+  SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
+  AC_CONFIG_FILES([admin/charsets/Makefile])

   AC_CONFIG_FILES([admin/unidata/Makefile])
   AC_CONFIG_FILES([admin/grammars/Makefile])
 fi                              dnl -d admin
   AC_CONFIG_FILES([admin/unidata/Makefile])
   AC_CONFIG_FILES([admin/grammars/Makefile])
 fi                              dnl -d admin


@@ -5278,7 +5441,7 @@ dnl is not yet set, sigh.  Or we could use ../$srcdir/src/.gdbinit,
 dnl or a symlink?
 AC_CONFIG_COMMANDS([src/.gdbinit], [
 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
 dnl or a symlink?
 AC_CONFIG_COMMANDS([src/.gdbinit], [
 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then

-  echo "source $ac_abs_top_srcdir/src/.gdbinit" > src/.gdbinit
+  AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit

 fi
 ])
 
 fi
 ])