stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

depends/x86_64-pc-linux-gnu/include/boost/compute/container/detail/scalar.hpp

@@ -0,0 +1,61 @@
+//---------------------------------------------------------------------------//
+// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
+//
+// Distributed under the Boost Software License, Version 1.0
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+// See http://boostorg.github.com/compute for more information.
+//---------------------------------------------------------------------------//
+
+#ifndef BOOST_COMPUTE_CONTAINER_DETAIL_SCALAR_HPP
+#define BOOST_COMPUTE_CONTAINER_DETAIL_SCALAR_HPP
+
+#include <boost/compute/buffer.hpp>
+#include <boost/compute/detail/read_write_single_value.hpp>
+
+namespace boost {
+namespace compute {
+namespace detail {
+
+// scalar<T> provides a trivial "container" that stores a
+// single value in a memory buffer on a compute device
+template<class T>
+class scalar
+{
+public:
+    typedef T value_type;
+
+    scalar(const context &context)
+        : m_buffer(context, sizeof(T))
+    {
+    }
+
+    ~scalar()
+    {
+    }
+
+    T read(command_queue &queue) const
+    {
+        return read_single_value<T>(m_buffer, 0, queue);
+    }
+
+    void write(const T &value, command_queue &queue)
+    {
+        write_single_value<T>(value, m_buffer, 0, queue);
+    }
+
+    const buffer& get_buffer() const
+    {
+        return m_buffer;
+    }
+
+private:
+    buffer m_buffer;
+};
+
+} // end detail namespace
+} // end compute namespace
+} // end boost namespace
+
+#endif // BOOST_COMPUTE_CONTAINER_DETAIL_SCALAR_HPP