[Boost-users] Process extension compile issue.

Hi Team, Greetings for the day. I am currently facing the problem with process extension as documented here http://www.boost.org/doc/libs/1_64_0/doc/html/boost_process/design.html#boos... . I am testing the boost 1.64 version macOS, and unable to use the below functionality. void test() { cout << "On Setup" << endl; } int main() { std::function on_st = test; bp::child c2("ls", boost::process::extend::on_setup(on_st)); } *Error: * /usr/local/include/boost/process/detail/handler.hpp:33:9: No matching function for call to object of type 'std::__1::function' Would somebody guide me here, please? -- Regards, Dinesh manojadinesh.blogspot.com