Cmake Error building ext-zmq

cmake.out

In file included from /tmp/php-zmq-master/ext_zmq.cpp:18:0:
/tmp/php-zmq-master/ext_zmq-private.h: In constructor 'HPHP::zmq::ZMQSocketData::ZMQSocketData(HPHP::zmq::ZMQContextData*, int64_t, bool)':
/tmp/php-zmq-master/ext_zmq-private.h:113:7: warning: 'HPHP::zmq::ZMQSocketData::pid' will be initialized after [-Wreorder]
   int pid;
       ^
/tmp/php-zmq-master/ext_zmq-private.h:111:8: warning:   'bool HPHP::zmq::ZMQSocketData::is_persistent' [-Wreorder]
   bool is_persistent;
        ^
/tmp/php-zmq-master/ext_zmq.cpp:279:1: warning:   when initialized here [-Wreorder]
 ZMQSocketData::ZMQSocketData(ZMQContextData* ctx, int64_t type, bool isPersistent)
 ^
In file included from /tmp/php-zmq-master/ext_zmq.cpp:18:0:
/tmp/php-zmq-master/ext_zmq-private.h:111:8: warning: 'HPHP::zmq::ZMQSocketData::is_persistent' will be initialized after [-Wreorder]
   bool is_persistent;
        ^
/tmp/php-zmq-master/ext_zmq-private.h:108:32: warning:   'HPHP::zmq::ZMQContextData* HPHP::zmq::ZMQSocketData::ctx' [-Wreorder]
   ZMQContextData* ctx{ nullptr };
                                ^
/tmp/php-zmq-master/ext_zmq.cpp:279:1: warning:   when initialized here [-Wreorder]
 ZMQSocketData::ZMQSocketData(ZMQContextData* ctx, int64_t type, bool isPersistent)
 ^