//===-- Support/hash_map - "Portable" wrapper around hash_map ---*- C++ -*-===//
-//
+// vim:ft=cpp
+//
// This file provides a wrapper around the mysterious <hash_map> header file
// that seems to move around between GCC releases into and out of namespaces at
// will. #including this header will cause hash_map to be available in the
#include "Config/config.h"
#ifdef HAVE_GNU_EXT_HASH_MAP
-
+// This is for GCC-3.1+ which puts hash in ext/hash_map
#include <ext/hash_map>
#define HASH_NAMESPACE __gnu_cxx
#else
+// This is for GCC-3.0.x which puts hashmap in the `ext' directory.
#ifdef HAVE_STD_EXT_HASH_MAP
#include <ext/hash_map>
#define HASH_NAMESPACE std
#else
+// This handles older, pre-3.0 GCC which do not have the extentions in the `ext'
+// directory, and ignore the `std' namespace.
#include <hash_map>
-#define HASH_NAMESPACE
+#define HASH_NAMESPACE std
#endif
#endif
//===-- Support/hash_set - "Portable" wrapper around hash_set ---*- C++ -*-===//
+// vim:ft=cpp
//
// This file provides a wrapper around the mysterious <hash_set> header file
// that seems to move around between GCC releases into and out of namespaces at
#ifdef HAVE_GNU_EXT_HASH_SET
+// This is for GCC-3.1+ which puts hashset in ext/hash_set
#include <ext/hash_set>
#define HASH_NAMESPACE __gnu_cxx
#else
+// This is for GCC-3.0.x which puts hashmap in the `ext' directory.
#ifdef HAVE_STD_EXT_HASH_SET
#include <ext/hash_set>
#define HASH_NAMESPACE std
#else
+// This handles older, pre-3.0 GCC which do not have the extentions in the `ext'
+// directory, and ignore the `std' namespace.
#include <hash_set>
-#define HASH_NAMESPACE
+#define HASH_NAMESPACE std
#endif
#endif
#include <Support/HashExtras.h>
#endif
-