--- misc/boost_1_44_0/boost/math/tools/fraction.hpp
+++ misc/build/boost_1_44_0/boost/math/tools/fraction.hpp
@@ -33,7 +33,7 @@
        typedef typename Gen::result_type result_type;
        typedef typename Gen::result_type value_type;
 
-       static result_type a(const value_type& v)
+       static result_type a(const value_type&)
        {
           return 1;
        }
--- misc/boost_1_44_0/boost/random/lagged_fibonacci.hpp
+++ misc/build/boost_1_44_0/boost/random/lagged_fibonacci.hpp
@@ -16,6 +16,10 @@
 #ifndef BOOST_RANDOM_LAGGED_FIBONACCI_HPP
 #define BOOST_RANDOM_LAGGED_FIBONACCI_HPP
 
+#if defined __GNUC__
+#pragma GCC system_header
+#endif
+
 #include <istream>
 #include <iosfwd>
 #include <algorithm>     // std::max
--- misc/boost_1_44_0/boost/random/shuffle_output.hpp
+++ misc/build/boost_1_44_0/boost/random/shuffle_output.hpp
@@ -16,6 +16,10 @@
 #ifndef BOOST_RANDOM_SHUFFLE_OUTPUT_HPP
 #define BOOST_RANDOM_SHUFFLE_OUTPUT_HPP
 
+#if defined __GNUC__
+#pragma GCC system_header
+#endif
+
 #include <boost/random/shuffle_order.hpp>
 
 namespace boost {
--- misc/boost_1_44_0/boost/random/subtract_with_carry.hpp
+++ misc/build/boost_1_44_0/boost/random/subtract_with_carry.hpp
@@ -16,6 +16,10 @@
 #ifndef BOOST_RANDOM_SUBTRACT_WITH_CARRY_HPP
 #define BOOST_RANDOM_SUBTRACT_WITH_CARRY_HPP
 
+#if defined __GNUC__
+#pragma GCC system_header
+#endif
+
 #include <boost/config/no_tr1/cmath.hpp>         // std::pow
 #include <iostream>
 #include <algorithm>     // std::equal