From 327ec13e475e1418ff158aa1875d5e73ad76eebb Mon Sep 17 00:00:00 2001
From: Jeff Garland <jeff@crystalclearsoftware.com>
Date: Wed, 30 Jun 2004 00:47:47 +0000
Subject: [PATCH] enable the experimental gregorian duration types

[SVN r23276]
---
 include/boost/date_time/compiler_config.hpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/boost/date_time/compiler_config.hpp b/include/boost/date_time/compiler_config.hpp
index 1b8c8f1..1041892 100644
--- a/include/boost/date_time/compiler_config.hpp
+++ b/include/boost/date_time/compiler_config.hpp
@@ -26,6 +26,12 @@
 #define BOOST_DATE_TIME_NO_MEMBER_INIT
 #endif
 
+//Include extensions to date_duration - comment out to remove this feature
+#define BOOST_DATE_TIME_OPTIONAL_GREGORIAN_TYPES
+//these extensions are known to cause problems with gcc295
+#if defined(__GNUC__) && (__GNUC__ < 3)
+#undef BOOST_DATE_TIME_OPTIONAL_GREGORIAN_TYPES
+#endif
 
 // include these types before we try to re-define them
 #include "boost/cstdint.hpp"