S-function compilation error

While compiling S-function i get the following error. Can anyone please help me out with this?

 Creating library C:\Users\VISHAK~1\AppData\Local\Temp\mex_ZFK4W3\templib.x and object C:\Users\VISHAK~1\AppData\Local\Temp\mex_ZFK4W3\templib.exp 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIWrite_Runnable_Activ_Cond_step_F_PPSC_Engine_running referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Read_Engine_speed_health_Engine_speed_health referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Read_Engine_speed_Engine_speed referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIWrite_Runnable_Activ_Cond_step_F_PPSC_Vehicle_standstill referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIWrite_Runnable_Activ_Cond_step_F_PPSC_Vehicle_rear_gear referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIWrite_Runnable_Activ_Cond_step_F_PPSC_Vehicle_low_speed_driving referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIWrite_Runnable_Activ_Cond_step_F_PPSC_Vehicle_forward_gear referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIWrite_Runnable_Activ_Cond_step_F_PPSC_Brake_pedal_pressed referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIWrite_Runnable_Activ_Cond_step_F_PPSC_Acc_pedal_pressed referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Read_CurrentGear_CurrentGear referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Read_BrakePedalPos_BrakePedalPos referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Read_AccPedalPos_AccPedalPos referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Read_Vehicle_speed_Vehicle_speed referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIWrite_Runnable_Activ_Cond_step_F_PPSC_Supply_pressure_low referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Read_p_supply_R_filt_p_supply_R_filt referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Read_p_supply_FR_filt_p_supply_FR_filt referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Read_p_supply_FL_filt_p_supply_FL_filt referenced in function _Runnable_Activ_Cond_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Pres_fb_enable_rr_F_PPSC_Pres_fb_enable_rr referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Pres_fb_enable_rl_F_PPSC_Pres_fb_enable_rl referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Pres_fb_enable_fr_F_PPSC_Pres_fb_enable_fr referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Pres_fb_enable_fl_F_PPSC_Pres_fb_enable_fl referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Non_lin_damp_enable_F_PPSC_Non_lin_damp_enable referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Sky_roll_active_F_PPSC_Sky_roll_active referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Sky_pitch_active_F_PPSC_Sky_pitch_active referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Sky_heave_active_F_PPSC_Sky_heave_active referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Pres_ctrl_enable_F_PPSC_Pres_ctrl_enable referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Height_ctrl_enable_F_PPSC_Height_ctrl_enable referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Cur_ctrl_enable_F_PPSC_Cur_ctrl_enable referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Acc_y_comp_active_F_PPSC_Acc_y_comp_active referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_F_PPSC_Acc_x_comp_active_F_PPSC_Acc_x_comp_active referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Activ_Log_step_F_PPSC_Supply_pressure_low referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Activ_Log_step_F_PPSC_Engine_running referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Activ_Log_step_F_PPSC_Vehicle_forward_gear referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Activ_Log_step_F_PPSC_Brake_pedal_pressed referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Activ_Log_step_F_PPSC_Vehicle_standstill referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Activ_Log_step_F_PPSC_Vehicle_low_speed_driving referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Activ_Log_step_F_PPSC_Acc_pedal_pressed referenced in function _Runnable_Activ_Log_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Write_PPSC_State_PPSC_State referenced in function _Runnable_Determi_Veh_State_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_Read_F_PPIO_Command_level_cabin_sw_F_PPIO_Command_level_cabin_sw referenced in function _Runnable_Determi_Veh_State_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Determi_Veh_State_step_F_PPSC_Vehicle_rear_gear referenced in function _Runnable_Determi_Veh_State_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Determi_Veh_State_step_F_PPSC_Vehicle_forward_gear referenced in function _Runnable_Determi_Veh_State_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Determi_Veh_State_step_F_PPSC_Vehicle_standstill referenced in function _Runnable_Determi_Veh_State_step 
PPSC_SFunction.obj : error LNK2019: unresolved external symbol _Rte_IrvIRead_Runnable_Determi_Veh_State_step_F_PPSC_Acc_pedal_pressed referenced in function _Runnable_Determi_Veh_State_step 
PPSC_SFunction.mexw32 : fatal error LNK1120: 43 unresolved externals 

C:\PROGRA~1\MATLAB\R2010B~1\BIN\MEX.PL: Error: Link of 'PPSC_SFunction.mexw32' failed.

??? Error using ==> mex at 208 Unable to complete successfully.

Thanks in advance.

Answer 1

[Kaustubha Govind]

Is this a hand-written S-function? It looks like you might need to link against additional source files or libraries that define _Rte_IrvIWrite_Runnable_Activ_Cond_step_F_PPSC_Engine_running, etc. If these functions are defined in .c files, simply add them to the end of your MEX command. If they are libraries files, add them to the MEX command using the -l option.