Bump the libinput requirement to 1.11

Released June 2018, that should be recent enough.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

configure.ac

@@ -45,22 +45,12 @@ XORG_DEFAULT_OPTIONS
 
 # Obtain compiler/linker options from server and required extensions
 PKG_CHECK_MODULES(XORG, [xorg-server >= 1.10] xproto [inputproto >= 2.2])
-PKG_CHECK_MODULES(LIBINPUT, [libinput >= 1.7.0])
+PKG_CHECK_MODULES(LIBINPUT, [libinput >= 1.11.0])
 
 OLD_LIBS=$LIBS
 OLD_CFLAGS=$CFLAGS
 LIBS="$LIBS $LIBINPUT_LIBS"
 CFLAGS="$CFLAGS $LIBINPUT_CFLAGS"
-AC_MSG_CHECKING([if libinput_device_touch_get_touch_count is available])
-AC_LINK_IFELSE(
-               [AC_LANG_PROGRAM([[#include <libinput.h>]],
-                                [[libinput_device_touch_get_touch_count(NULL)]])],
-               [AC_MSG_RESULT([yes])
-                AC_DEFINE(HAVE_LIBINPUT_TOUCH_COUNT, [1],
-                          [libinput_device_touch_get_touch_count() is available])
-                [libinput_have_touch_count=yes]],
-               [AC_MSG_RESULT([no])
-                [libinput_have_touch_count=no]])
 
 AC_MSG_CHECKING([if libinput_device_config_scroll_get_button_lock is available])
 AC_LINK_IFELSE(

src/xf86libinput.c

@@ -1104,11 +1104,9 @@ xf86libinput_init_touch(InputInfoPtr pInfo)
 			           XIGetKnownProperty(AXIS_LABEL_PROP_ABS_MT_POSITION_Y),
 				   min, max, res * 1000, 0, res * 1000, Absolute);
 
-#if HAVE_LIBINPUT_TOUCH_COUNT
 	ntouches = libinput_device_touch_get_touch_count(device);
 	if (ntouches == 0) /* unknown -  mtdev */
 		ntouches = TOUCH_MAX_SLOTS;
-#endif
 	InitTouchClassDeviceStruct(dev, ntouches, XIDirectTouch, 2);
 
 }