TCP/IP Stack error: undefined reference to 'alt_iniche_init()'

[Altera_Forum]

I am using Nios II IDE 9.0SPE build 235 to implement web server on nios processor with ucOS. 

I added the software component 'NicheStack TCP/IP Stack' through Properties.  I get the below error:   undefined reference to `alt_iniche_init()'  undefined reference to `dhc_set_callback(int, int (*)(int, int))'  undefined reference to `dhc_set_state(int, int)'  undefined reference to `netmain()'   In the syslib folder > Debug > obj > iniche and rest of the TCP/IP folders are present  How do I debug this issue? What else should be done so that the system know about `alt_iniche_init()' ,etc?     Code (partial):  # include <stdio.h> # include <math.h> # include <unistd.h> // <bae> Allows usleep() to be called # include <alt_iniche_dev.h> /* Nichestack definitions */ # include "includes.h" # include "ipport.h" # include "libport.h" # include "osport.h" # include "tcpport.h" # include "net.h" # include "dhcpclnt.h" # include "icmp.h" /* Low-level network */ # include "triple_speed_ethernet_regs.h" # include "iniche/triple_speed_ethernet_iniche.h" # include "iniche/ins_tse_mac.h" /* Nichestack definitions */ # include "includes.h" # include "ipport.h" # include "libport.h" # include "osport.h" # include "tcpport.h" # include "net.h" # include "dhcpclnt.h" # include "icmp.h" . . . . . ... .....   void SSSInitialTask(void *task_data) { wait_on_phy(); dhc_set_callback( 0, ws_ipset ); alt_iniche_init(); netmain();  while (!iniche_net_ready)  {  TK_SLEEP(1);  OSTimeDlyHMSM(0, 0, 3, 0);  } printf("\nNios II Simple Socket Server starting up.\n");  while (1); /* Correct Program Flow should never get here */ }

[Altera_Forum]

Also... In system.stf 

 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx  ...... <sw_component id="INICHE" name="NicheStack TCP/IP Stack" sopc_component_dir="altera_iniche"> <sys_defines> <define name="dhcp_client" quote="no" value="1"/> <define name="ip_fragments" quote="no" value="1"/> <define name="include_tcp" quote="no" value="1"/> <define name="iniche_default_if" quote="yes" value="triple_speed_ethernet_mac"/> .... xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

[Altera_Forum]

--- Quote Start ---  Also... In system.stf  xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx  ...... <sw_component id="INICHE" name="NicheStack TCP/IP Stack" sopc_component_dir="altera_iniche"> <sys_defines> <define name="dhcp_client" quote="no" value="1"/> <define name="ip_fragments" quote="no" value="1"/> <define name="include_tcp" quote="no" value="1"/> <define name="iniche_default_if" quote="yes" value="triple_speed_ethernet_mac"/> .... xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx  --- Quote End ---     @ ash what's the modification on this file?

[Altera_Forum]

There is no modification on this file, .stf is generated by the system. 

I think, I need to change the ipport.h, is it right? Also, in nios II 9sp2, after adding the software component of TCP/IP stack, should I link the src (source code) to the project separately?