Undefined reference to while linking dll library - c++

Question

I am trying to compile one of the metatrader 4 c++ api libraries in code::blocks.
Here is the main program
`#include "stdio.h"
#include "MT4APITest.h"
int main(void)
{
char err[255];
SunkTCPClient* pCl = MT4_TC_StartClient("127.0.0.1", 4567, err);
MT4APITest test;
test.Run(pCl);
return 0;
}`
In build options -> liker settings, I have included relative path "bin/Debug/MT4_API.lib"
In build options -> Search Directories -> Compiler - >, I have included "C:\home\mt4\". This is the folder where I have kept my mt4_API.dll library. In the same folder, I've placed below files.
`main.cpp
MT4_API.h
MT4_APITest.cpp
MT4_APITest.h
mt43.cbp (for code blocks).`
When I compile this, the compilation command turns out to be
mingw32-g++.exe -o bin\Debug\mt43.exe obj\Debug\main.o obj\Debug\MT4APITest.o bin\Debug\MT4_API.lib
and getting the error
C:/cygwin/home/LENOVO/mt4/mt43/main.cpp:10: undefined reference to MT4_TC_StartClient(char const*, int, char*, wchar_t const*)#16'
obj\Debug\MT4APITest.o: In function ZN10MT4APITest15TestAccountInfoEv':
C:/cygwin/home/LENOVO/mt4/mt43/MT4APITest.cpp:48: undefined reference to MT4_TC_GetAccountInfo(SunkTCPClient*, MT4AccountInfo*)#8'
C:/cygwin/home/LENOVO/mt4/mt43/MT4APITest.cpp:48: undefined reference to MT4_TC_GetErrorDescription(MT4_RET_CODE)#4'
obj\Debug\MT4APITest.o: In function ZN10MT4APITest14TestSymbolInfoEv':
C:/cygwin/home/LENOVO/mt4/mt43/MT4APITest.cpp:57: undefined reference to MT4_TC_GetSymbolListCount(SunkTCPClient*, int*)#8
and the list continues. May I know what I am missing here.