From cbc20b451d3a3980351c388652ea39314dd09a23 Mon Sep 17 00:00:00 2001
From: Brian Gaeke <gaeke@uiuc.edu>
Date: Mon, 23 Feb 2004 18:56:36 +0000
Subject: [PATCH] Renamed to hash_set.in; move to using autoconf substitution
 tags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11765 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/Support/{hash_set => hash_set.in} |  8 +--
 include/llvm/ADT/hash_set.in              | 67 +++++++++++++++++++++++
 2 files changed, 70 insertions(+), 5 deletions(-)
 rename include/Support/{hash_set => hash_set.in} (93%)
 create mode 100644 include/llvm/ADT/hash_set.in

diff --git a/include/Support/hash_set b/include/Support/hash_set.in
similarity index 93%
rename from include/Support/hash_set
rename to include/Support/hash_set.in
index fa68a8bb738..49c5d732e8f 100644
--- a/include/Support/hash_set
+++ b/include/Support/hash_set.in
@@ -26,18 +26,16 @@
 //  3.1      __gnu_cxx   ext/hash_set
 //
 
-#include "Config/config.h"
-
 // GCC versions 3.1 and later put hash_set in <ext/hash_set> and in
 // the __gnu_cxx namespace.
-#if defined(HAVE_GNU_EXT_HASH_SET)
+#if @HAVE_GNU_EXT_HASH_SET@
 # include <ext/hash_set>
 # ifndef HASH_NAMESPACE
 #  define HASH_NAMESPACE __gnu_cxx
 # endif
 
 // GCC 3.0.x puts hash_set in <ext/hash_set> and in the std namespace.
-#elif defined(HAVE_STD_EXT_HASH_SET)
+#elif @HAVE_STD_EXT_HASH_SET@
 # include <ext/hash_set>
 # ifndef HASH_NAMESPACE
 #  define HASH_NAMESPACE std
@@ -45,7 +43,7 @@
 
 // Older compilers such as GCC before version 3.0 do not keep
 // extensions in the `ext' directory, and ignore the `std' namespace.
-#elif defined(HAVE_GLOBAL_HASH_SET)
+#elif @HAVE_GLOBAL_HASH_SET@
 # include <hash_set>
 # ifndef HASH_NAMESPACE
 #  define HASH_NAMESPACE std
diff --git a/include/llvm/ADT/hash_set.in b/include/llvm/ADT/hash_set.in
new file mode 100644
index 00000000000..49c5d732e8f
--- /dev/null
+++ b/include/llvm/ADT/hash_set.in
@@ -0,0 +1,67 @@
+//===-- Support/hash_set - "Portable" wrapper around hash_set ---*- 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.
+// 
+//===----------------------------------------------------------------------===//
+// 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
+// will.  #including this header will cause hash_set to be available in the
+// global namespace.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_HASH_SET
+#define SUPPORT_HASH_SET
+
+// Compiler Support Matrix
+//
+// Version   Namespace   Header File
+//  2.95.x       ::        hash_set
+//  3.0.4       std      ext/hash_set
+//  3.1      __gnu_cxx   ext/hash_set
+//
+
+// GCC versions 3.1 and later put hash_set in <ext/hash_set> and in
+// the __gnu_cxx namespace.
+#if @HAVE_GNU_EXT_HASH_SET@
+# include <ext/hash_set>
+# ifndef HASH_NAMESPACE
+#  define HASH_NAMESPACE __gnu_cxx
+# endif
+
+// GCC 3.0.x puts hash_set in <ext/hash_set> and in the std namespace.
+#elif @HAVE_STD_EXT_HASH_SET@
+# include <ext/hash_set>
+# 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_SET@
+# include <hash_set>
+# 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_set header file."
+#endif
+
+using HASH_NAMESPACE::hash_set;
+using HASH_NAMESPACE::hash;
+
+// Include vector because ext/hash_set includes stl_vector.h and leaves
+// out specializations like stl_bvector.h, causing link conflicts.
+#include <vector>
+
+#include <Support/HashExtras.h>
+
+#endif
-- 
2.34.1