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

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

@@ -0,0 +1,52 @@
+
+//  (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_NUMBER_HPP)
+#define BOOST_VMD_IS_NUMBER_HPP
+
+#include <boost/vmd/detail/setup.hpp>
+
+#if BOOST_PP_VARIADICS
+
+#include <boost/vmd/detail/is_number.hpp>
+
+/*
+
+  The succeeding comments in this file are in doxygen format.
+
+*/
+
+/** \file
+*/
+
+/** \def BOOST_VMD_IS_NUMBER(sequence)
+
+    \brief Tests whether a sequence is a Boost PP number.
+
+    The macro checks to see if a sequence is a Boost PP number.
+    A Boost PP number is a value from 0 to 256.
+    
+    sequence = a possible number
+
+    returns = 1 if the sequence is a Boost PP number, 
+              0 if it is not.
+              
+    If the input is not a VMD data type this macro could lead to
+    a preprocessor error. This is because the macro
+    uses preprocessor concatenation to determine if the input
+    is a number once it is determined that the input does not
+    start with parenthesis. If the data being concatenated would
+    lead to an invalid preprocessor token the compiler can issue
+    a preprocessor error.
+              
+*/
+
+#define BOOST_VMD_IS_NUMBER(sequence) \
+    BOOST_VMD_DETAIL_IS_NUMBER(sequence) \
+/**/
+
+#endif /* BOOST_PP_VARIADICS */
+#endif /* BOOST_VMD_IS_NUMBER_HPP */