Failed to build in debug mode

When I build this in debug mode with cxx flag -rdynamic, I got undefined reference issue
libsdptransform-src/test/parse.test.cpp:550: undefined reference to `sdptransform::parse(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&)'

We don't know what the -rdynamic flag means and honestly we don't have time to investigate it.