Undefined symbols for architecture x86_64: JNI_CreateJavaVM OS-X Xcode - java-native-interface

Question

I am attempting to compile the following C++ code for creating a Java Virtual Machine, using Xcode on Mac OS-X Mountain Lion:
JNIEnv * createVM(JavaVM **jvm){
JNIEnv * retEnv = NULL;
JavaVMInitArgs vm_args = *new JavaVMInitArgs();
JavaVMOption *options = new JavaVMOption[1];
std::string sJavaInstallPath = "-Djava.class.path=" + findJavaPath();
if(sJavaInstallPath == "-Djava.class.path="){
return NULL;
}
options[0].optionString = const_cast<char*>(sJavaInstallPath.c_str());
vm_args.version = JNI_VERSION_1_6;
vm_args.nOptions = 1;
vm_args.options = options;
vm_args.ignoreUnrecognized = false;
long status = JNI_CreateJavaVM(jvm, (void**)&retEnv, &vm_args);
if(status == JNI_ERR){
std::cout << "Failure: Unable to load JVM \t Exit" << std::endl;
}else if(status == JNI_OK){
std::cout << "CreateVM:\t\tJVM loaded successfully" << std::endl;
}
delete options;
return retEnv;
};
Which gives the following error:
Undefined symbols for architecture x86_64: "_JNI_CreateJavaVM".
From these similar questions:
undefined reference to `JNI_CreateJavaVM' linux
How can I use JNI in C++ to use a Java class?
undefined symbol: JNI_CreateJavaVM in Linux
http://lists.apple.com/archives/java-dev/2005/Apr/msg00067.html
http://lists.apple.com/archives/java-dev/2005/Apr/msg00068.html
I gather that I'm missing a Library reference to libjvm.dylib. The problem is that I'm not sure how to get Xcode to recognize/include the library for linking,
I've tried putting the following directories (all of which contain a libjvm.dylib file) into the Library Search Paths list in Xcode, with no result:
/System/Library//Java/JavaVirtualMachines/1.6.0.jdk/Contents/Libraries/
/Library//Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/server/
/System/Library/Frameworks/JavaVM.framework/Libraries/
I'm still quite new to OS-X and Xcode, and the answers to the other questions all relate to compiling using gcc or g++, which I have even less experience with, so what I need to know is: how do I tell the Xcode compiler where to find libjvm.dylib, and also which libjvm.dylib is the one I should be linking to?

Answer 1

OK, found the solution,
the equivalent of g++'s
-L<library/to/link>
setting in Xcode is the Link Binary with Libraries setting under the Build Phases tab,
not the Library Search Paths list that I mentioned above.
and the library I needed to link to was actually /System/Library/Frameworks/JavaVM.framework/JavaVM,
not libjvm.dylib