+// Set wxUSE_LONGLONG to 1 to compile the wxLongLong class. This is a 64 bit
+// integer which is implemented in terms of native 64 bit integers if any or
+// uses emulation otherwise.
+//
+// This class is required by wxDateTime and so you should enable it if you want
+// to use wxDateTime. For most modern platforms, it will use the native 64 bit
+// integers in which case (almost) all of its functions are inline and it
+// almost does not take any space, so there should be no reason to switch it
+// off.
+//
+// Recommended setting: 1
+#define wxUSE_LONGLONG 1
+
+// Set wxUSE_TIMEDATE to 1 to compile the wxDateTime and related classes which
+// allow to manipulate dates, times and time intervals. wxDateTime replaces the
+// old wxTime and wxDate classes which are still provided for backwards
+// compatibility (and implemented in terms of wxDateTime).
+//
+// Note that this class is relatively new and is still officially in alpha
+// stage because some features are not yet (fully) implemented. It is already
+// quite useful though and should only be disabled if you are aiming at
+// absolutely minimal version of the library.
+//
+// Requires: wxUSE_LONGLONG
+//
+// Recommended setting: 1
+#define wxUSE_TIMEDATE 1
+
+// Setting wxUSE_CONFIG to 1 enables the use of wxConfig and related classes
+// which allow the application to store its settings in the persistent
+// storage. Setting this to 1 will also enable on-demand creation of the
+// global config object in wxApp.
+//
+// See also wxUSE_CONFIG_NATIVE below.
+//
+// Recommended setting: 1