From e2b48cb74186992432af78737772284a852fc56d Mon Sep 17 00:00:00 2001
From: Frances Buontempo <frances.buontempo@gmail.com>
Date: Tue, 3 Jan 2012 10:44:03 +0000
Subject: Changes to hash_map to make it build with MSVC's version

---
 src/hash_map.h | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/hash_map.h b/src/hash_map.h
index 1025f71..401f690 100644
--- a/src/hash_map.h
+++ b/src/hash_map.h
@@ -21,6 +21,13 @@
 #include <hash_map>
 
 using stdext::hash_map;
+using stdext::hash_compare;
+
+struct ExternalStringCmp {
+  bool operator()(const char* a, const char* b) const {
+    return strcmp(a, b) < 0;
+  }
+};
 
 #else
 
@@ -37,7 +44,6 @@ struct hash<std::string> {
 };
 }
 
-#endif
 
 /// Equality binary predicate for const char*.
 struct ExternalStringEq {
@@ -49,13 +55,10 @@ struct ExternalStringEq {
 /// Hash functor for const char*.
 struct ExternalStringHash {
   size_t operator()(const char* key) const {
-#ifdef _MSC_VER
-    return stdext::hash<const char*>()(key);
-#else
     return __gnu_cxx::hash<const char*>()(key);
-#endif
   }
 };
+#endif
 
 /// A template for hash_maps keyed by a const char* that is maintained within
 /// the values.  Use like:
@@ -63,7 +66,11 @@ struct ExternalStringHash {
 /// to make foos into a hash mapping const char* => Foo*.
 template<typename V>
 struct ExternalStringHashMap {
+#ifdef _MSC_VER
+  typedef hash_map<const char*, V, hash_compare<const char *,ExternalStringCmp> > Type;
+#else
   typedef hash_map<const char*, V, ExternalStringHash, ExternalStringEq> Type;
+#endif
 };
 
 #endif // NINJA_MAP_H_
-- 
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