Hi, when I was trying to link tcp/ip stack with kernel, it turns out to be as below, any idea of how to solve it please? I am writing my own Makefile, using arm-none-eabi- gcc and g++.
obj/arp.o: In function `vARPRefreshCacheEntry':
FreeRTOS_ARP.c:(.text+0x418): undefined reference to `memcmp'
FreeRTOS_ARP.c:(.text+0x4c0): undefined reference to `memcmp'
obj/arp.o: In function `FreeRTOS_OutputARPRequest':
FreeRTOS_ARP.c:(.text+0xbd4): undefined reference to `xNetworkInterfaceOutput'
obj/arp.o: In function `FreeRTOS_PrintARPCache':
FreeRTOS_ARP.c:(.text+0xf08): undefined reference to `vLoggingPrintf'
FreeRTOS_ARP.c:(.text+0xf38): undefined reference to `vLoggingPrintf'
obj/dhcp.o: In function `prvInitialiseDHCP':
FreeRTOS_DHCP.c:(.text+0x564): undefined reference to `uxRand'
obj/dhcp.o: In function `prvProcessDHCPReplies':
FreeRTOS_DHCP.c:(.text+0x71c): undefined reference to `memcmp'
FreeRTOS_DHCP.c:(.text+0xb0c): undefined reference to `vLoggingPrintf'
obj/dns.o: In function `prvGetHostByName':
FreeRTOS_DNS.c:(.text+0x190): undefined reference to `strlen'
obj/dns.o: In function `prvCreateDNSMessage':
FreeRTOS_DNS.c:(.text+0x414): undefined reference to `strlen'
obj/dns.o: In function `prvParseDNSReply':
FreeRTOS_DNS.c:(.text+0xb58): undefined reference to `xApplicationDNSQueryHook'
obj/dns.o: In function `prvTreatNBNS':
FreeRTOS_DNS.c:(.text+0x10a4): undefined reference to `xApplicationDNSQueryHook'
obj/dns.o: In function `prvProcessDNSCache':
FreeRTOS_DNS.c:(.text+0x19c4): undefined reference to `strncmp'
FreeRTOS_DNS.c:(.text+0x1ab8): undefined reference to `strncpy'
obj/ip.o: In function `xIsCallingFromIPTask':
FreeRTOS_IP.c:(.text+0x234): undefined reference to `xTaskGetCurrentTaskHandle'
obj/ip.o: In function `eConsiderFrameForProcessing':
FreeRTOS_IP.c:(.text+0xf70): undefined reference to `memcmp'
FreeRTOS_IP.c:(.text+0xf9c): undefined reference to `memcmp'
FreeRTOS_IP.c:(.text+0xfc8): undefined reference to `memcmp'
obj/ip.o: In function `prvProcessNetworkDownEvent':
FreeRTOS_IP.c:(.text+0x10a4): undefined reference to `vApplicationIPNetworkEventHook'
FreeRTOS_IP.c:(.text+0x10b4): undefined reference to `xNetworkInterfaceInitialise'
obj/ip.o: In function `vIPNetworkUpCalls':
FreeRTOS_IP.c:(.text+0x1110): undefined reference to `vApplicationIPNetworkEventHook'
obj/ip.o: In function `prvProcessIPPacket':
FreeRTOS_IP.c:(.text+0x142c): undefined reference to `memmove'
obj/ip.o: In function `prvProcessICMPEchoReply':
FreeRTOS_IP.c:(.text+0x1794): undefined reference to `vApplicationPingReplyHook'
obj/ip.o: In function `vReturnEthernetFrame':
FreeRTOS_IP.c:(.text+0x2100): undefined reference to `xNetworkInterfaceOutput'
obj/sockets.o: In function `FreeRTOS_round_up':
FreeRTOS_Sockets.c:(.text+0xd4): undefined reference to `__aeabi_uidiv'
obj/sockets.o: In function `vNetworkSocketsInit':
FreeRTOS_Sockets.c:(.text+0x46c): undefined reference to `uxRand'
FreeRTOS_Sockets.c:(.text+0x47c): undefined reference to `__aeabi_uidivmod'
FreeRTOS_Sockets.c:(.text+0x4a8): undefined reference to `uxRand'
FreeRTOS_Sockets.c:(.text+0x4c0): undefined reference to `uxRand'
FreeRTOS_Sockets.c:(.text+0x4d0): undefined reference to `__aeabi_uidivmod'
obj/sockets.o: In function `FreeRTOS_socket':
FreeRTOS_Sockets.c:(.text+0x644): undefined reference to `xEventGroupCreate'
obj/sockets.o: In function `FreeRTOS_CreateSocketSet':
FreeRTOS_Sockets.c:(.text+0x7f4): undefined reference to `xEventGroupCreate'
obj/sockets.o: In function `FreeRTOS_DeleteSocketSet':
FreeRTOS_Sockets.c:(.text+0x858): undefined reference to `vEventGroupDelete'
obj/sockets.o: In function `FreeRTOS_select':
FreeRTOS_Sockets.c:(.text+0xa20): undefined reference to `xEventGroupWaitBits'
FreeRTOS_Sockets.c:(.text+0xa50): undefined reference to `xEventGroupClearBits'
obj/sockets.o: In function `prvFindSelectedSocket':
FreeRTOS_Sockets.c:(.text+0xad8): undefined reference to `xEventGroupClearBits'
FreeRTOS_Sockets.c:(.text+0xb20): undefined reference to `xEventGroupWaitBits'
obj/sockets.o: In function `FreeRTOS_recvfrom':
FreeRTOS_Sockets.c:(.text+0xc1c): undefined reference to `xEventGroupWaitBits'
obj/sockets.o: In function `FreeRTOS_bind':
FreeRTOS_Sockets.c:(.text+0x10c4): undefined reference to `xEventGroupWaitBits'
obj/sockets.o: In function `vSocketClose':
FreeRTOS_Sockets.c:(.text+0x1428): undefined reference to `vEventGroupDelete'
obj/sockets.o: In function `vSocketWakeUpUser':
FreeRTOS_Sockets.c:(.text+0x1ed4): undefined reference to `xEventGroupSetBits'
FreeRTOS_Sockets.c:(.text+0x1f24): undefined reference to `xEventGroupSetBits'
obj/sockets.o: In function `FreeRTOS_connect':
FreeRTOS_Sockets.c:(.text+0x2238): undefined reference to `xEventGroupWaitBits'
obj/sockets.o: In function `FreeRTOS_accept':
FreeRTOS_Sockets.c:(.text+0x2500): undefined reference to `xEventGroupWaitBits'
obj/sockets.o: In function `FreeRTOS_recv':
FreeRTOS_Sockets.c:(.text+0x269c): undefined reference to `xEventGroupWaitBits'
obj/sockets.o: In function `FreeRTOS_send':
FreeRTOS_Sockets.c:(.text+0x2ba4): undefined reference to `xEventGroupWaitBits'
obj/sockets.o: In function `vTCPNetStat':
FreeRTOS_Sockets.c:(.text+0x3840): undefined reference to `vLoggingPrintf'
FreeRTOS_Sockets.c:(.text+0x384c): undefined reference to `vLoggingPrintf'
FreeRTOS_Sockets.c:(.text+0x38e0): undefined reference to `snprintf'
FreeRTOS_Sockets.c:(.text+0x39a4): undefined reference to `vLoggingPrintf'
FreeRTOS_Sockets.c:(.text+0x3a24): undefined reference to `vLoggingPrintf'
FreeRTOS_Sockets.c:(.text+0x3a78): undefined reference to `vLoggingPrintf'
obj/sockets.o: In function `vSocketSelect':
FreeRTOS_Sockets.c:(.text+0x3dc0): undefined reference to `xEventGroupClearBits'
FreeRTOS_Sockets.c:(.text+0x3dfc): undefined reference to `xEventGroupClearBits'
FreeRTOS_Sockets.c:(.text+0x3e18): undefined reference to `xEventGroupSetBits'
obj/tcp_ip.o: In function `prvTCPReturnPacket':
FreeRTOS_TCP_IP.c:(.text+0x12c0): undefined reference to `xNetworkInterfaceOutput'
obj/tcp_ip.o: In function `prvCheckOptions':
FreeRTOS_TCP_IP.c:(.text+0x1a20): undefined reference to `__aeabi_uidiv'
obj/tcp_ip.o: In function `prvHandleListen':
FreeRTOS_TCP_IP.c:(.text+0x4758): undefined reference to `vLoggingPrintf'
obj/tcp_win.o: In function `vTCPWindowInit':
FreeRTOS_TCP_WIN.c:(.text+0x954): undefined reference to `__aeabi_uidiv'
obj/udp_ip.o: In function `vProcessGeneratedUDPPacket':
FreeRTOS_UDP_IP.c:(.text+0x57c): undefined reference to `xNetworkInterfaceOutput'
obj/udp_ip.o: In function `xProcessReceivedUDPPacket':
FreeRTOS_UDP_IP.c:(.text+0x684): undefined reference to `xEventGroupSetBits'
FreeRTOS_UDP_IP.c:(.text+0x6c0): undefined reference to `xEventGroupSetBits'
obj/tcp_server.o: In function `FreeRTOS_CreateTCPServer':
FreeRTOS_TCP_server.c:(.text+0xec): undefined reference to `vLoggingPrintf'
obj/tcp_server.o: In function `prvReceiveNewClient':
FreeRTOS_TCP_server.c:(.text+0x564): undefined reference to `vLoggingPrintf'
obj/tcp_server.o: In function `strnew':
FreeRTOS_TCP_server.c:(.text+0x74c): undefined reference to `strlen'
obj/tcp_server.o: In function `prvRemoveSlash':
FreeRTOS_TCP_server.c:(.text+0x7b0): undefined reference to `strlen'
obj/ftp_server.o: In function `stdioGET_ERRNO':
FreeRTOS_FTP_server.c:(.text+0x4c): undefined reference to `pvTaskGetThreadLocalStoragePointer'
obj/ftp_server.o: In function `xFTPClientWork':
FreeRTOS_FTP_server.c:(.text+0x220): undefined reference to `memcmp'
FreeRTOS_FTP_server.c:(.text+0x2c0): undefined reference to `vLoggingPrintf'
obj/ftp_server.o: In function `prvProcessCommand':
FreeRTOS_FTP_server.c:(.text+0x4b8): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x718): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x7b0): undefined reference to `sscanf'
FreeRTOS_FTP_server.c:(.text+0x7d0): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0xa10): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0xa54): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0xac4): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0xc24): undefined reference to `strcmp'
FreeRTOS_FTP_server.c:(.text+0xc9c): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0xe88): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0xedc): undefined reference to `strlen'
obj/ftp_server.o: In function `prvTransferConnect':
FreeRTOS_FTP_server.c:(.text+0x1160): undefined reference to `vLoggingPrintf'
obj/ftp_server.o: In function `prvTransferCheck':
FreeRTOS_FTP_server.c:(.text+0x1470): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x1560): undefined reference to `snprintf'
obj/ftp_server.o: In function `prvTransferCloseSocket':
FreeRTOS_FTP_server.c:(.text+0x168c): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x16ec): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x1710): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x17bc): undefined reference to `vLoggingPrintf'
obj/ftp_server.o: In function `prvTransferCloseFile':
FreeRTOS_FTP_server.c:(.text+0x18d4): undefined reference to `ff_fclose'
FreeRTOS_FTP_server.c:(.text+0x1900): undefined reference to `ff_fclose'
obj/ftp_server.o: In function `prvGetTransferType':
FreeRTOS_FTP_server.c:(.text+0x195c): undefined reference to `strlen'
obj/ftp_server.o: In function `pcMkSize':
FreeRTOS_FTP_server.c:(.text+0x1ac4): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x1afc): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x1b34): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x1b4c): undefined reference to `snprintf'
obj/ftp_server.o: In function `ulGetAverage':
FreeRTOS_FTP_server.c:(.text+0x1bc4): undefined reference to `__aeabi_uidiv'
FreeRTOS_FTP_server.c:(.text+0x1c10): undefined reference to `__aeabi_uidiv'
FreeRTOS_FTP_server.c:(.text+0x1c50): undefined reference to `__aeabi_uidiv'
FreeRTOS_FTP_server.c:(.text+0x1c74): undefined reference to `__aeabi_uidiv'
obj/ftp_server.o: In function `prvParsePortData':
FreeRTOS_FTP_server.c:(.text+0x1d18): undefined reference to `sscanf'
obj/ftp_server.o: In function `prvStoreFilePrep':
FreeRTOS_FTP_server.c:(.text+0x1e08): undefined reference to `ff_fopen'
FreeRTOS_FTP_server.c:(.text+0x1e48): undefined reference to `ff_fseek'
FreeRTOS_FTP_server.c:(.text+0x1e88): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x1ec4): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x1ecc): undefined reference to `ff_fclose'
FreeRTOS_FTP_server.c:(.text+0x1eec): undefined reference to `ff_fopen'
FreeRTOS_FTP_server.c:(.text+0x1f54): undefined reference to `strerror'
FreeRTOS_FTP_server.c:(.text+0x1f68): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x1fa4): undefined reference to `snprintf'
obj/ftp_server.o: In function `prvStoreFileWork':
FreeRTOS_FTP_server.c:(.text+0x20d0): undefined reference to `ff_fwrite'
obj/ftp_server.o: In function `prvRetrieveFilePrep':
FreeRTOS_FTP_server.c:(.text+0x2180): undefined reference to `ff_fopen'
FreeRTOS_FTP_server.c:(.text+0x21cc): undefined reference to `strerror'
FreeRTOS_FTP_server.c:(.text+0x21e0): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x2260): undefined reference to `ff_fseek'
FreeRTOS_FTP_server.c:(.text+0x22a0): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x22dc): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x22ec): undefined reference to `ff_fclose'
FreeRTOS_FTP_server.c:(.text+0x2394): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x240c): undefined reference to `snprintf'
obj/ftp_server.o: In function `prvRetrieveFileWork':
FreeRTOS_FTP_server.c:(.text+0x25c0): undefined reference to `ff_fread'
FreeRTOS_FTP_server.c:(.text+0x25e4): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x26f4): undefined reference to `vLoggingPrintf'
obj/ftp_server.o: In function `prvListSendPrep':
FreeRTOS_FTP_server.c:(.text+0x2818): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x28d0): undefined reference to `ff_findfirst'
FreeRTOS_FTP_server.c:(.text+0x2938): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x2984): undefined reference to `vLoggingPrintf'
obj/ftp_server.o: In function `prvListSendWork':
FreeRTOS_FTP_server.c:(.text+0x2a84): undefined reference to `ff_findnext'
FreeRTOS_FTP_server.c:(.text+0x2b28): undefined reference to `strerror'
FreeRTOS_FTP_server.c:(.text+0x2b3c): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x2bbc): undefined reference to `ff_diskfree'
FreeRTOS_FTP_server.c:(.text+0x2c1c): undefined reference to `__aeabi_uldivmod'
FreeRTOS_FTP_server.c:(.text+0x2c60): undefined reference to `snprintf'
obj/ftp_server.o: In function `prvGetFileInfoStat':
FreeRTOS_FTP_server.c:(.text+0x2f40): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x2f9c): undefined reference to `snprintf'
obj/ftp_server.o: In function `prvChangeDir':
FreeRTOS_FTP_server.c:(.text+0x30a0): undefined reference to `strrchr'
FreeRTOS_FTP_server.c:(.text+0x3110): undefined reference to `strlen'
FreeRTOS_FTP_server.c:(.text+0x3174): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x3198): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x320c): undefined reference to `FF_FS_Count'
FreeRTOS_FTP_server.c:(.text+0x3230): undefined reference to `ff_finddir'
FreeRTOS_FTP_server.c:(.text+0x3278): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x32a0): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x331c): undefined reference to `snprintf'
obj/ftp_server.o: In function `prvRenameFrom':
FreeRTOS_FTP_server.c:(.text+0x33bc): undefined reference to `ff_fopen'
FreeRTOS_FTP_server.c:(.text+0x33d4): undefined reference to `ff_fclose'
FreeRTOS_FTP_server.c:(.text+0x33f4): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x3448): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x3484): undefined reference to `strerror'
FreeRTOS_FTP_server.c:(.text+0x3498): undefined reference to `vLoggingPrintf'
obj/ftp_server.o: In function `prvRenameTo':
FreeRTOS_FTP_server.c:(.text+0x3548): undefined reference to `ff_rename'
FreeRTOS_FTP_server.c:(.text+0x35e8): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x3610): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x364c): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x3684): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x36b0): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x36ec): undefined reference to `strerror'
FreeRTOS_FTP_server.c:(.text+0x3700): undefined reference to `vLoggingPrintf'
obj/ftp_server.o: In function `prvDeleteFile':
FreeRTOS_FTP_server.c:(.text+0x37b8): undefined reference to `ff_remove'
FreeRTOS_FTP_server.c:(.text+0x37e8): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x3890): undefined reference to `strerror'
FreeRTOS_FTP_server.c:(.text+0x38a4): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x38d0): undefined reference to `snprintf'
obj/ftp_server.o: In function `prvSizeDateFile':
FreeRTOS_FTP_server.c:(.text+0x397c): undefined reference to `strrchr'
FreeRTOS_FTP_server.c:(.text+0x39b8): undefined reference to `ff_stat'
FreeRTOS_FTP_server.c:(.text+0x39e0): undefined reference to `strerror'
FreeRTOS_FTP_server.c:(.text+0x39f4): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x3a58): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x3a9c): undefined reference to `vLoggingPrintf'
FreeRTOS_FTP_server.c:(.text+0x3ab4): undefined reference to `vLoggingPrintf'
obj/ftp_server.o: In function `prvMakeRemoveDir':
FreeRTOS_FTP_server.c:(.text+0x3b4c): undefined reference to `ff_rmdir'
FreeRTOS_FTP_server.c:(.text+0x3b64): undefined reference to `ff_mkdir'
FreeRTOS_FTP_server.c:(.text+0x3bbc): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x3c50): undefined reference to `strerror'
FreeRTOS_FTP_server.c:(.text+0x3ca4): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x3cd4): undefined reference to `vLoggingPrintf'
obj/ftp_server.o: In function `prvSendReply':
FreeRTOS_FTP_server.c:(.text+0x3db8): undefined reference to `strlen'
FreeRTOS_FTP_server.c:(.text+0x3e5c): undefined reference to `strlen'
FreeRTOS_FTP_server.c:(.text+0x3ed8): undefined reference to `FF_PRINTF'
obj/ftp_server.o: In function `xMakeAbsolute':
FreeRTOS_FTP_server.c:(.text+0x3f18): undefined reference to `strlen'
FreeRTOS_FTP_server.c:(.text+0x3f54): undefined reference to `strlen'
FreeRTOS_FTP_server.c:(.text+0x3fdc): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x3ffc): undefined reference to `strncasecmp'
FreeRTOS_FTP_server.c:(.text+0x401c): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x4064): undefined reference to `snprintf'
obj/ftp_server.o: In function `xMakeRelative':
FreeRTOS_FTP_server.c:(.text+0x40b8): undefined reference to `strlen'
FreeRTOS_FTP_server.c:(.text+0x40d8): undefined reference to `strncasecmp'
FreeRTOS_FTP_server.c:(.text+0x4100): undefined reference to `snprintf'
FreeRTOS_FTP_server.c:(.text+0x411c): undefined reference to `snprintf'
obj/http_server.o: In function `stdioGET_ERRNO':
FreeRTOS_HTTP_server.c:(.text+0x14): undefined reference to `pvTaskGetThreadLocalStoragePointer'
obj/http_server.o: In function `prvFileClose':
FreeRTOS_HTTP_server.c:(.text+0xd8): undefined reference to `vLoggingPrintf'
FreeRTOS_HTTP_server.c:(.text+0xe8): undefined reference to `ff_fclose'
obj/http_server.o: In function `prvSendReply':
FreeRTOS_HTTP_server.c:(.text+0x194): undefined reference to `snprintf'
obj/http_server.o: In function `prvSendFile':
FreeRTOS_HTTP_server.c:(.text+0x290): undefined reference to `snprintf'
FreeRTOS_HTTP_server.c:(.text+0x334): undefined reference to `ff_fread'
obj/http_server.o: In function `prvOpenURL':
FreeRTOS_HTTP_server.c:(.text+0x484): undefined reference to `snprintf'
FreeRTOS_HTTP_server.c:(.text+0x498): undefined reference to `ff_fopen'
FreeRTOS_HTTP_server.c:(.text+0x4cc): undefined reference to `strerror'
FreeRTOS_HTTP_server.c:(.text+0x4e8): undefined reference to `vLoggingPrintf'
obj/http_server.o: In function `prvProcessCmd':
FreeRTOS_HTTP_server.c:(.text+0x5c8): undefined reference to `vLoggingPrintf'
obj/http_server.o: In function `xHTTPClientWork':
FreeRTOS_HTTP_server.c:(.text+0x74c): undefined reference to `memcmp'
FreeRTOS_HTTP_server.c:(.text+0x7ac): undefined reference to `strchr'
FreeRTOS_HTTP_server.c:(.text+0x858): undefined reference to `vLoggingPrintf'
obj/http_server.o: In function `pcGetContentsType':
FreeRTOS_HTTP_server.c:(.text+0x938): undefined reference to `strcasecmp'
obj/buff_2.o: In function `xNetworkBuffersInitialise':
buff_2.c:(.text+0x24): undefined reference to `xQueueCreateCountingSemaphore'
Hi, when I was trying to link tcp/ip stack with kernel, it turns out to be as below, any idea of how to solve it please? I am writing my own Makefile, using arm-none-eabi- gcc and g++.