error3

harness/backendmanager_remotetcp.cc:331:3: error: #error Neither HAVE_FORK nor __WIN32__ is defined
 # error Neither HAVE_FORK nor __WIN32__ is defined
   ^
harness/backendmanager_remotetcp.cc: In member function ‘virtual Xapian::WritableDatabase BackendManagerRemoteTcp::get_writable_database(const string&, const string&)’:
harness/backendmanager_remotetcp.cc:357:41: error: ‘launch_xapian_tcpsrv’ was not declared in this scope
     int port = launch_xapian_tcpsrv(args);
                                         ^
harness/backendmanager_remotetcp.cc: In member function ‘virtual Xapian::Database BackendManagerRemoteTcp::get_remote_database(const std::vector<std::__cxx11::basic_string<char> >&, unsigned int)’:
harness/backendmanager_remotetcp.cc:366:41: error: ‘launch_xapian_tcpsrv’ was not declared in this scope
     int port = launch_xapian_tcpsrv(args);
                                         ^
harness/backendmanager_remotetcp.cc: In member function ‘virtual Xapian::Database BackendManagerRemoteTcp::get_writable_database_as_database()’:
harness/backendmanager_remotetcp.cc:374:41: error: ‘launch_xapian_tcpsrv’ was not declared in this scope
     int port = launch_xapian_tcpsrv(args);
                                         ^
harness/backendmanager_remotetcp.cc: In member function ‘virtual Xapian::WritableDatabase BackendManagerRemoteTcp::get_writable_database_again()’:
harness/backendmanager_remotetcp.cc:382:41: error: ‘launch_xapian_tcpsrv’ was not declared in this scope
     int port = launch_xapian_tcpsrv(args);
                                         ^
Makefile:581: recipe for target 'harness/backendmanager_remotetcp.o' failed
make: *** [harness/backendmanager_remotetcp.o] Error 1