midori: make sure it can't be selected if webkit can't be enabled

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/midori/Config.in

@@ -3,7 +3,12 @@ config BR2_PACKAGE_MIDORI
 	select BR2_PACKAGE_WEBKIT
 	select BR2_PACKAGE_LIBSEXY
 	depends on BR2_PACKAGE_LIBGTK2
+	depends on BR2_INSTALL_LIBSTDCPP # webkit
+	depends on BR2_USE_WCHAR	 # webkit
 	help
 	  Midori is a lightweight web browser based on WebKit
 
 	  http://software.twotoasts.de/?page=midori
+
+comment "midori requires C++, WCHAR in toolchain and libgtk2"
+        depends on !BR2_INSTALL_LIBSTDCPP || !BR2_USE_WCHAR || !BR2_PACKAGE_LIBGTK2