fix dependencies of FEATURE_GETOPT_LONG

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/util-linux/Config.in b/util-linux/Config.in
index 559e4c1..5f5adc0 100644
--- a/util-linux/Config.in
+++ b/util-linux/Config.in
@@ -253,9 +253,9 @@
 config FEATURE_GETOPT_LONG
 	bool "Support option -l"
 	default y if LONG_OPTS
+	depends on GETOPT
 	help
-	  Enable support for recognising long options using the -l option to
-	  getopt.
+	  Enable support for long options (option -l).
 
 config HEXDUMP
 	bool "hexdump"