From d9cc1a6986188a97e09e4c8cef46c34eee5f9cd2 Mon Sep 17 00:00:00 2001
From: Chris Dyer <cdyer@Chriss-MacBook-Air.local>
Date: Sun, 10 Nov 2013 00:58:44 -0500
Subject: guard against direct includes of tr1

---
 utils/hash.h | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'utils')

diff --git a/utils/hash.h b/utils/hash.h
index 189ed1ae..e56fca06 100644
--- a/utils/hash.h
+++ b/utils/hash.h
@@ -20,11 +20,17 @@
 # define HASH_MAP_RESERVED(h,empty,deleted) do { (h).set_empty_key(empty); (h).set_deleted_key(deleted); } while(0)
 # define HASH_MAP_EMPTY(h,empty) do { (h).set_empty_key(empty); } while(0)
 #else
+#ifdef HAVE_CXX11
+# include <unordered_map>
+# include <unordered_set>
+#else
 # include <tr1/unordered_map>
 # include <tr1/unordered_set>
-# define SPARSE_HASH_MAP std::tr1::unordered_map
-# define HASH_MAP std::tr1::unordered_map
-# define HASH_SET std::tr1::unordered_set
+namespace std { using std::tr1::unordered_map; using std::tr1::unordered_set; }
+#endif
+# define SPARSE_HASH_MAP std::unordered_map
+# define HASH_MAP std::unordered_map
+# define HASH_SET std::unordered_set
 # define HASH_MAP_DELETED(h,deleted)
 # define HASH_MAP_RESERVED(h,empty,deleted)
 # define HASH_MAP_EMPTY(h,empty)
-- 
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