ios plugin Undefined symbols for architecture i386

Hi. i'm writing plugin for ios that geting device's location, download JSON from internet, and returning data back to unity.

I'm trying to test it on simulator (i have no ios device at the moment), but i'm geting the error.

 Undefined symbols for architecture i386:
   "__sendLocation", referenced from:
       RegisterMonoModules() in RegisterMonoModules.o
   "__sendWeather", referenced from:
       RegisterMonoModules() in RegisterMonoModules.o
   "__setPrefs", referenced from:
       RegisterMonoModules() in RegisterMonoModules.o
   "__start", referenced from:
       RegisterMonoModules() in RegisterMonoModules.o
 ld: symbol(s) not found for architecture i386
 clang: error: linker command failed with exit code 1 (use -v to see invocation)

I'm using Unity 4.3.4, xcode 5, simulator 6.1 and 7.0

I've wrote plugin in xcode, then draged .h and .m files in plugins/iOS in unity, in player settings in unity i set "simulator sdk", builded project and then changed RegisterMonoModules.cpp

 extern "C"
 {
     typedef void* gpointer;
     typedef int gboolean;
 #if !(TARGET_IPHONE_SIMULATOR)
     const char*            UnityIPhoneRuntimeVersion = "4.3.4f1";
     void                mono_dl_register_symbol (const char* name, void *addr);
     extern int             mono_ficall_flag;
     void                mono_aot_register_module(gpointer *aot_info);
     extern gboolean        mono_aot_only;
     extern gpointer*    mono_aot_module_Assembly_CSharp_firstpass_info; // Assembly-CSharp-firstpass.dll
     extern gpointer*    mono_aot_module_Assembly_CSharp_info; // Assembly-CSharp.dll
     extern gpointer*    mono_aot_module_Assembly_UnityScript_firstpass_info; // Assembly-UnityScript-firstpass.dll
     extern gpointer*    mono_aot_module_Mono_Security_info; // Mono.Security.dll
     extern gpointer*    mono_aot_module_System_Core_info; // System.Core.dll
     extern gpointer*    mono_aot_module_System_Xml_info; // System.Xml.dll
     extern gpointer*    mono_aot_module_System_info; // System.dll
     extern gpointer*    mono_aot_module_UnityEngine_info; // UnityEngine.dll
     extern gpointer*    mono_aot_module_mscorlib_info; // mscorlib.dll
 #endif // !(TARGET_IPHONE_SIMULATOR)
     void                mono_dl_register_symbol (const char* name, void *addr);
     void    _setPrefs();
     void    _start();
     void    _sendWeather();
     void    _sendLocation();
     void    UnityNSObject_RetainObject();
     void    UnityNSObject_ReleaseObject();
     void    UnityNSError_Code();
     void    UnityNSError_Description();
     void    UnityNSError_Reason();
     void    UnityNSNotification_Name();
 }
 void RegisterMonoModules()
 {
     gEnableGyroscope = false;
 #if !(TARGET_IPHONE_SIMULATOR)
     mono_aot_only = true;
     mono_ficall_flag = false;
     mono_aot_register_module(mono_aot_module_Assembly_CSharp_firstpass_info);
     mono_aot_register_module(mono_aot_module_Assembly_CSharp_info);
     mono_aot_register_module(mono_aot_module_Assembly_UnityScript_firstpass_info);
     mono_aot_register_module(mono_aot_module_Mono_Security_info);
     mono_aot_register_module(mono_aot_module_System_Core_info);
     mono_aot_register_module(mono_aot_module_System_Xml_info);
     mono_aot_register_module(mono_aot_module_System_info);
     mono_aot_register_module(mono_aot_module_UnityEngine_info);
     mono_aot_register_module(mono_aot_module_mscorlib_info);
 
     mono_dl_register_symbol("_setPrefs", (void*)&_setPrefs);
     mono_dl_register_symbol("_start", (void*)&_start);
     mono_dl_register_symbol("_sendWeather", (void*)&_sendWeather);
     mono_dl_register_symbol("_sendLocation", (void*)&_sendLocation);
     mono_dl_register_symbol("UnityNSObject_RetainObject", (void*)&UnityNSObject_RetainObject);
     mono_dl_register_symbol("UnityNSObject_ReleaseObject", (void*)&UnityNSObject_ReleaseObject);
     mono_dl_register_symbol("UnityNSError_Code", (void*)&UnityNSError_Code);
     mono_dl_register_symbol("UnityNSError_Description", (void*)&UnityNSError_Description);
     mono_dl_register_symbol("UnityNSError_Reason", (void*)&UnityNSError_Reason);
     mono_dl_register_symbol("UnityNSNotification_Name", (void*)&UnityNSNotification_Name);
 #endif // !(TARGET_IPHONE_SIMULATOR)
     mono_dl_register_symbol("_setPrefs", (void*)&_setPrefs);
     mono_dl_register_symbol("_start", (void*)&_start);
     mono_dl_register_symbol("_sendWeather", (void*)&_sendWeather);
     mono_dl_register_symbol("_sendLocation", (void*)&_sendLocation);
 }
 

What i'm doing wrong? Any clues?