In common.h, define func_lib for function objects. In configure.ac, define HAVE_STD_FUNCTION and HAVE_BOOST_FUNCTION. Include function headers in ndnboost.
diff --git a/libs/function/test/function_arith_portable.cpp b/libs/function/test/function_arith_portable.cpp
new file mode 100644
index 0000000..04ebca5
--- /dev/null
+++ b/libs/function/test/function_arith_portable.cpp
@@ -0,0 +1,32 @@
+// Function library
+
+// Copyright (C) 2001-2003 Douglas Gregor
+
+// Use, modification and distribution is 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)
+
+// For more information, see http://www.boost.org/
+
+
+#include <boost/function.hpp>
+#include <iostream>
+
+float mul_ints(int x, int y) { return ((float)x) * y; }
+struct int_div {
+ float operator()(int x, int y) const { return ((float)x)/y; };
+};
+int main()
+{
+ ndnboost::function2<float, int, int> f;
+ f = int_div();
+ std::cout << f(5, 3) << std::endl;
+ if (f)
+ std::cout << f(5, 3) << std::endl;
+else
+ std::cout << "f has no target, so it is unsafe to call" << std::endl;
+ f = 0;
+ f = &mul_ints;
+
+ return 0;
+}