+case $host_os in
+ # darwin through Snow Leopard has poll() but can't be used to poll character devices.
+ darwin@<:@789@:>@*|darwin10*) ;;
+ darwin*)
+ _ac_xorg_macosx_version_min=""
+ if echo $CPPFLAGS $CFLAGS | grep -q mmacosx-version-min ; then
+ _ac_xorg_macosx_version_min=`echo $CPPFLAGS $CFLAGS | sed 's/^.*-mmacosx-version-min=\(@<:@^ @:>@*\).*$/\1/'`
+ else
+ _ac_xorg_macosx_version_min=$MACOSX_DEPLOYMENT_TARGET
+ fi
+ case $_ac_xorg_macosx_version_min in
+ 10.@<:@0123456@:>@|10.@<:@0123456@:>@.*) ;;
+ *)
+ AC_CHECK_FUNC(poll, [AC_DEFINE(USE_POLL, 1, [poll() function is available])], )
+ ;;
+ esac
+ unset _ac_xorg_macosx_version_min
+ ;;
+ *)
+ AC_CHECK_FUNC(poll, [AC_DEFINE(USE_POLL, 1, [poll() function is available])], )
+ ;;
+esac
+
+XCB_EXTENSION(Composite, yes)
+XCB_EXTENSION(Damage, yes)
+XCB_EXTENSION(DPMS, yes)
+XCB_EXTENSION(DRI2, yes)
+XCB_EXTENSION(DRI3, $have_sendmsg)
+XCB_EXTENSION(GLX, yes)
+XCB_EXTENSION(Present, yes)
+XCB_EXTENSION(RandR, yes)
+XCB_EXTENSION(Record, yes)
+XCB_EXTENSION(Render, yes)
+XCB_EXTENSION(Resource, yes)
+XCB_EXTENSION(Screensaver, yes)
+XCB_EXTENSION(Shape, yes)
+XCB_EXTENSION(Shm, yes)
+XCB_EXTENSION(Sync, yes)
+XCB_EXTENSION(Xevie, no)
+XCB_EXTENSION(XFixes, yes)
+XCB_EXTENSION(XFree86-DRI, yes)
+XCB_EXTENSION(Xinerama, yes)
+XCB_EXTENSION(XInput, no)
+XCB_EXTENSION(XKB, yes)
+XCB_EXTENSION(Xprint, no)
+XCB_EXTENSION(SELinux, no)
+XCB_EXTENSION(XTest, yes)
+XCB_EXTENSION(Xv, yes)
+XCB_EXTENSION(XvMC, yes)
+
+AC_ARG_WITH(launchd, AS_HELP_STRING([--with-launchd], [Build with support for Apple's launchd (default: auto)]), [LAUNCHD=$withval], [LAUNCHD=auto])
+if test "x$LAUNCHD" = xauto; then
+ unset LAUNCHD
+ AC_CHECK_PROG(LAUNCHD, [launchd], [yes], [no], [$PATH$PATH_SEPARATOR/sbin])
+fi
+
+if test "x$LAUNCHD" = xyes ; then
+ AC_DEFINE(HAVE_LAUNCHD, 1, [launchd support available])
+fi