Renamed to hash_map.in; move to using autoconf substitution tags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11764 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 66 insertions, 0 deletions

diff --git a/include/llvm/ADT/hash_map.in b/include/llvm/ADT/hash_map.in
new file mode 100644
index 0000000..0253de7
--- /dev/null
+++ b/include/llvm/ADT/hash_map.in
@@ -0,0 +1,66 @@
+//===-- Support/hash_map - "Portable" wrapper around hash_map ---*- C++ -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+// 
+// 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
+// global namespace.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_HASH_MAP
+#define SUPPORT_HASH_MAP
+
+// Compiler Support Matrix
+//
+// Version   Namespace   Header File
+//  2.95.x       ::        hash_map
+//  3.0.4       std      ext/hash_map
+//  3.1      __gnu_cxx   ext/hash_map
+//
+
+#if @HAVE_GNU_EXT_HASH_MAP@
+// This is for GCC-3.1+ which puts hash in ext/hash_map
+# include <ext/hash_map>
+# ifndef HASH_NAMESPACE
+#  define HASH_NAMESPACE __gnu_cxx
+# endif
+
+// GCC 3.0.x puts hash_map in <ext/hash_map> and in the std namespace.
+#elif @HAVE_STD_EXT_HASH_MAP@
+# include <ext/hash_map>
+# ifndef HASH_NAMESPACE
+#  define HASH_NAMESPACE std
+# endif
+
+// Older compilers such as GCC before version 3.0 do not keep
+// extensions in the `ext' directory, and ignore the `std' namespace.
+#elif @HAVE_GLOBAL_HASH_MAP@
+# include <hash_map>
+# ifndef HASH_NAMESPACE
+#  define HASH_NAMESPACE std
+# endif
+
+// Give a warning if we couldn't find it, instead of (or in addition to)
+// randomly doing something dumb.
+#else
+# warning "Autoconfiguration failed to find the hash_map header file."
+#endif
+
+using HASH_NAMESPACE::hash_map;
+using HASH_NAMESPACE::hash_multimap;
+using HASH_NAMESPACE::hash;
+
+// Include vector because ext/hash_map includes stl_vector.h and leaves
+// out specializations like stl_bvector.h, causing link conflicts.
+#include <vector>
+
+#include <Support/HashExtras.h>
+
+#endif