# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1412598235 -10800
# Node ID 9694eb987bf30e90e00186ae1daf9d00484689ec
# Parent  51d5549a1bdc86bc5fd516ab47ec73e522450baf
Add check int configure for C++11 support.

diff -r 51d5549a1bdc -r 9694eb987bf3 configure
--- a/configure	Mon Oct 06 15:23:36 2014 +0300
+++ b/configure	Mon Oct 06 15:23:55 2014 +0300
@@ -401,6 +401,31 @@
   exit 1
 fi
 
+
+#
+# Does C++ compiler support -std=c++11 ?
+#
+printf "checking whether the C++ compiler supports C++11..."
+cat > $cdir/$cbasename << _EOF_
+#include <memory>
+int main(int argc, char *argv[])
+{
+  std::shared_ptr<int> sp(new int(5));
+  (void) argc;
+  (void) argv;
+  return 0;
+}
+_EOF_
+if (cd $cdir && $CXX -std=c++11 -c $cbasename >$cout 2>&1)
+then
+  echo " yes"
+else
+  echo " no"
+  sed 's/^/> /' $cdir/$cout
+  echo "error: looks like the C++ compiler does not support C++11" 1>&2
+  exit 1
+fi
+
 #
 #	Create the directory where the build-specific files go
 #