I am trying to create a static library in xcode and link to that static library from another program.

So as a test i have created a BSD static C library project and just added the following code:

//Test.h

int testFunction();

//Test.cpp

#include "Test.h"
int testFunction() {
return 12;
}

This compiles fine and create a .a file (libTest.a).

Now i want to use it in another program so I create a new xcode project (cocoa application) Have the following code:

//main.cpp

#include <iostream>
#include "Testlib.h"

int main (int argc, char * const argv[]) {
    // insert code here...
    std::cout << "Result:\n" <<testFunction();
    return 0;
}

//Testlib.h

extern int testFunction();

I right clicked on the project -> add -> existing framework -> add other Selected the .a file and it added it into the project view.

I always get this linker error: Build TestUselibrary of project TestUselibrary with configuration Debug

Ld build/Debug/TestUselibrary normal x86_64 cd /Users/myname/location/TestUselibrary setenv MACOSX_DEPLOYMENT_TARGET 10.6 /Developer/usr/bin/g++-4.2 -arch x86_64 -isysroot /Developer/SDKs/MacOSX10.6.sdk -L/Users/myname/location/TestUselibrary/build/Debug
-L/Users/myname/location/TestUselibrary/../Test/build/Debug -F/Users/myname/location/TestUselibrary/build/Debug -filelist /Users/myname/location/TestUselibrary/build/TestUselibrary.build/Debug/TestUselibrary.build/Objects-normal/x86_64/TestUselibrary.LinkFileList -mmacosx-version-min=10.6 -lTest -o /Users/myname/location/TestUselibrary/build/Debug/TestUselibrary

Undefined symbols: "testFunction()", referenced from: _main in main.o ld: symbol(s) not found collect2: ld returned 1 exit status

I am new to macosx development and fairly new to c++. I am probably missing something fairly obvious, all my experience comes from creating dlls on the windows platform. I really appreciate any help.