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

depends/x86_64-pc-linux-gnu/include/boost/vmd/is_unary.hpp

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+
+//  (C) Copyright Edward Diener 2011-2015
+//  Use, modification and distribution are subject to 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).
+
+#if !defined(BOOST_VMD_IS_UNARY_HPP)
+#define BOOST_VMD_IS_UNARY_HPP
+
+#include <boost/vmd/detail/setup.hpp>
+
+#if BOOST_PP_VARIADICS
+
+#include <boost/vmd/detail/sequence_arity.hpp>
+
+/*
+
+  The succeeding comments in this file are in doxygen format.
+
+*/
+
+/** \file
+*/
+
+/** \def BOOST_VMD_IS_UNARY(sequence)
+
+    \brief Determines if the sequence has only a single element, referred to as a single-element sequence.
+    
+    sequence = a VMD sequence
+
+    returns = 1 if the sequence is a single-element sequence, else returns 0.
+    
+    If the size of a sequence is known it is faster comparing that size to be equal
+    to one to find out if the sequence is single-element. But if the size of the
+    sequence is not known it is faster calling this macro than getting the size and
+    doing the previously mentioned comparison in order to determine if the sequence
+    is single-element or not.
+    
+*/
+
+#define BOOST_VMD_IS_UNARY(sequence) \
+    BOOST_VMD_DETAIL_IS_UNARY(sequence) \
+/**/
+
+/** \def BOOST_VMD_IS_UNARY_D(d,sequence)
+
+    \brief Determines if the sequence has only a single element, referred to as a single-element sequence. Re-entrant version.
+    
+    d        = The next available BOOST_PP_WHILE iteration.
+    sequence = a sequence
+
+    returns = 1 if the sequence is a single-element sequence, else returns 0.
+    
+    If the size of a sequence is known it is faster comparing that size to be equal
+    to one to find out if the sequence is single-element. But if the size of the
+    sequence is not known it is faster calling this macro than getting the size and
+    doing the previously mentioned comparison in order to determine if the sequence
+    is single-element or not.
+    
+*/
+
+#define BOOST_VMD_IS_UNARY_D(d,sequence) \
+    BOOST_VMD_DETAIL_IS_UNARY_D(d,sequence) \
+/**/
+
+#endif /* BOOST_PP_VARIADICS */
+#endif /* BOOST_VMD_IS_UNARY_HPP */