long error while click BUILD (in external)

the ERROR is after i click BUILD: The call to realtime_make_rtw_hook, during the after_make hook generated the following error:

Error executing SSH command: make: Entering directory `/home/pi/untitled_rtt' "gcc" -I"./" -O3 -D"MODEL=untitled" -D"NUMST=1" -D"NCSTATES=0" -D"HAVESTDIO=" -D"ON_TARGET_WAIT_FOR_START=1" -D"ONESTEPFCN=0" -D"EXT_MODE=1" -D"TERMFCN=1" -D"MAT_FILE=0" -D"MULTI_INSTANCE_CODE=0" -D"INTEGER_CODE=0" -D"MT=0" -D"CLASSIC_INTERFACE=0" -D"TID01EQ=0" -D"_USE_TARGET_UDP_=" -D"_RUNONTARGETHARDWARE_BUILD_=" -c ./linuxUDP.c ./ext_svr.c ./ext_work.c ./rtiostream_interface.c ./updown.c ./rtiostream_tcpip.c ./rtiostream_utils.c ./HostLib_Network.c ./HostLib_rtw.c ./ert_main.c ./untitled.c ./untitled_data.c ./ext_svr.c: In function ‘DisconnectFromHost’: ./ext_svr.c:267:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c:267:17: note: each undeclared identifier is reported only once for each function it appears in ./ext_svr.c: In function ‘ForceDisconnectFromHost’: ./ext_svr.c:316:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘ProcessConnectPkt’: ./ext_svr.c:341:13: error: ‘comminitialized’ undeclared (first use in this function) ./ext_svr.c: In function ‘UploadServerWork’: ./ext_svr.c:861:5: error: unknown type name ‘ExtBufMemList’ ./ext_svr.c:878:17: error: request for member ‘nActiveBufs’ in something not a structure or union ./ext_svr.c:879:27: error: request for member ‘nActiveBufs’ in something not a structure or union ./ext_svr.c:880:13: error: unknown type name ‘BufMem’ ./ext_svr.c:880:43: error: request for member ‘bufs’ in something not a structure or union ./ext_svr.c:889:23: error: request for member ‘section1’ in something not a structure or union ./ext_svr.c:890:23: error: request for member ‘nBytes1’ in something not a structure or union ./ext_svr.c:898:23: error: request for member ‘nBytes2’ in something not a structure or union ./ext_svr.c:901:27: error: request for member ‘section2’ in something not a structure or union ./ext_svr.c:902:27: error: request for member ‘nBytes2’ in something not a structure or union ./ext_svr.c:911:37: error: request for member ‘tids’ in something not a structure or union ./ext_svr.c: In function ‘rt_UploadServerWork’: ./ext_svr.c:938:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘rt_ExtModeInit’: ./ext_svr.c:967:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘rt_ExtModeShutdown’: ./ext_svr.c:1345:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘rt_UploadCheckTrigger’: ./ext_svr.c:1380:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘rt_UploadCheckEndTrigger’: ./ext_svr.c:1393:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘rt_UploadBufAddTimePoint’: ./ext_svr.c:1406:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./rtiostream_tcpip.c:210:1: error: unknown type name ‘uint32_T’ ./ert_main.c: In function ‘baseRateTask’: ./ert_main.c:52:29: error: ‘untitled_M’ undeclared (first use in this function) ./ert_main.c:52:29: note: each undeclared identifier is reported only once for each function it appears in ./ert_main.c: In function ‘main’: ./ert_main.c:170:21: error: ‘untitled_M’ undeclared (first use in this function) make: * [linuxUDP.o] Error 1 make: Leaving directory `/home/pi/untitled_rtt'

The build process will terminate as a result.

Caused by: Error executing SSH command: make: Entering directory `/home/pi/untitled_rtt' "gcc" -I"./" -O3 -D"MODEL=untitled" -D"NUMST=1" -D"NCSTATES=0" -D"HAVESTDIO=" -D"ON_TARGET_WAIT_FOR_START=1" -D"ONESTEPFCN=0" -D"EXT_MODE=1" -D"TERMFCN=1" -D"MAT_FILE=0" -D"MULTI_INSTANCE_CODE=0" -D"INTEGER_CODE=0" -D"MT=0" -D"CLASSIC_INTERFACE=0" -D"TID01EQ=0" -D"_USE_TARGET_UDP_=" -D"_RUNONTARGETHARDWARE_BUILD_=" -c ./linuxUDP.c ./ext_svr.c ./ext_work.c ./rtiostream_interface.c ./updown.c ./rtiostream_tcpip.c ./rtiostream_utils.c ./HostLib_Network.c ./HostLib_rtw.c ./ert_main.c ./untitled.c ./untitled_data.c ./ext_svr.c: In function ‘DisconnectFromHost’: ./ext_svr.c:267:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c:267:17: note: each undeclared identifier is reported only once for each function it appears in ./ext_svr.c: In function ‘ForceDisconnectFromHost’: ./ext_svr.c:316:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘ProcessConnectPkt’: ./ext_svr.c:341:13: error: ‘comminitialized’ undeclared (first use in this function) ./ext_svr.c: In function ‘UploadServerWork’: ./ext_svr.c:861:5: error: unknown type name ‘ExtBufMemList’ ./ext_svr.c:878:17: error: request for member ‘nActiveBufs’ in something not a structure or union ./ext_svr.c:879:27: error: request for member ‘nActiveBufs’ in something not a structure or union ./ext_svr.c:880:13: error: unknown type name ‘BufMem’ ./ext_svr.c:880:43: error: request for member ‘bufs’ in something not a structure or union ./ext_svr.c:889:23: error: request for member ‘section1’ in something not a structure or union ./ext_svr.c:890:23: error: request for member ‘nBytes1’ in something not a structure or union ./ext_svr.c:898:23: error: request for member ‘nBytes2’ in something not a structure or union ./ext_svr.c:901:27: error: request for member ‘section2’ in something not a structure or union ./ext_svr.c:902:27: error: request for member ‘nBytes2’ in something not a structure or union ./ext_svr.c:911:37: error: request for member ‘tids’ in something not a structure or union ./ext_svr.c: In function ‘rt_UploadServerWork’: ./ext_svr.c:938:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘rt_ExtModeInit’: ./ext_svr.c:967:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘rt_ExtModeShutdown’: ./ext_svr.c:1345:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘rt_UploadCheckTrigger’: ./ext_svr.c:1380:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘rt_UploadCheckEndTrigger’: ./ext_svr.c:1393:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./ext_svr.c: In function ‘rt_UploadBufAddTimePoint’: ./ext_svr.c:1406:17: error: ‘NUM_UPINFOS’ undeclared (first use in this function) ./rtiostream_tcpip.c:210:1: error: unknown type name ‘uint32_T’ ./ert_main.c: In function ‘baseRateTask’: ./ert_main.c:52:29: error: ‘untitled_M’ undeclared (first use in this function) ./ert_main.c:52:29: note: each undeclared identifier is reported only once for each function it appears in ./ert_main.c: In function ‘main’: ./ert_main.c:170:21: error: ‘untitled_M’ undeclared (first use in this function) make: * [linuxUDP.o] Error 1 make: Leaving directory `/home/pi/untitled_rtt'