package/xapp_xfd: add optional xlib_libxkbfile dependency

Fixes:
 - http://autobuild.buildroot.org/results/6a487750c0f08f1a87ae4e30e139e5a1a6004b81

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/x11r7/xapp_xfd/xapp_xfd.mk

@@ -12,4 +12,11 @@ XAPP_XFD_LICENSE_FILES = COPYING
 XAPP_XFD_DEPENDENCIES = freetype fontconfig xlib_libXaw xlib_libXft
 XAPP_XFD_CONF_OPTS = --with-appdefaultdir=/usr/share/X11/app-defaults
 
+ifeq ($(BR2_PACKAGE_XLIB_LIBXKBFILE),y)
+XAPP_XFD_CONF_OPTS += --with-xkb
+XAPP_XFD_DEPENDENCIES += xlib_libxkbfile
+else
+XAPP_XFD_CONF_OPTS += --without-xkb
+endif
+
 $(eval $(autotools-package))