From 009b1c42aa6266385f2c37e227516b24077e6dd7 Mon Sep 17 00:00:00 2001
From: Ed Schouten <ed@FreeBSD.org>
Date: Tue, 2 Jun 2009 17:52:33 +0000
Subject: Import LLVM, at r72732.

---
 autoconf/m4/cxx_std_iterator.m4 | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 autoconf/m4/cxx_std_iterator.m4

(limited to 'autoconf/m4/cxx_std_iterator.m4')

diff --git a/autoconf/m4/cxx_std_iterator.m4 b/autoconf/m4/cxx_std_iterator.m4
new file mode 100644
index 0000000000000..38a611764c790
--- /dev/null
+++ b/autoconf/m4/cxx_std_iterator.m4
@@ -0,0 +1,26 @@
+# Check for standard iterator extension.  This is modified from
+# http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_hash_set.html
+AC_DEFUN([AC_CXX_HAVE_STD_ITERATOR],
+[AC_CACHE_CHECK(whether the compiler has the standard iterator,
+ac_cv_cxx_have_std_iterator,
+[AC_REQUIRE([AC_CXX_NAMESPACES])
+  AC_LANG_PUSH([C++])
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+    [[#include <iterator>
+#ifdef HAVE_NAMESPACES
+using namespace std;
+#endif]],
+  [[iterator<int,int,int> t; return 0;]])],
+  ac_cv_cxx_have_std_iterator=yes, 
+  ac_cv_cxx_have_std_iterator=no)
+  AC_LANG_POP([C++])
+])
+if test "$ac_cv_cxx_have_std_iterator" = yes
+then
+   AC_DEFINE(HAVE_STD_ITERATOR,1,[Have std namespace iterator])
+else
+   AC_DEFINE(HAVE_STD_ITERATOR,0,[Does not have std namespace iterator])
+fi
+])
+
+
-- 
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