I also cannot build the tests. There are at least two problems:
1) The #include directives inside the test code assume that the directory "units" is inside a directory called "mcs". So I created the directory "mcs" and moved "units" into it.
Right - believe it or not, this is included in the main page of the documentation, in the "Installation" section...
2) There is at least one #include directive that refers to the directory "mcs/utility", and it tries to include a header file called "type_traits.hpp", which is a file that I do not see in the distribution.
This is fixed by the two files I attached in the previous message - in any case, I believe the only dependency on <mcs/utility/type_traits.hpp> is in unit_test_1.cpp, so the other four tests should work... Keep it coming... M