Ошибка JNI в функции jni_createJavaJVM

У меня проблемы с созданием JVM. Если я запускаю код ниже автономно, он работает нормально. Однако мне нужно интегрировать его в более крупный инструмент, который будет вызывать библиотеку Java.

Сначала программа вызывает метод createVM, а затем метод invokePrismWrapper. Однако метод JNI_CreateJavaVM (…) возвращает JNI_ERR.

препроцессор

#define USER_CLASSPATH ".:../ ....

Функция CreateVM

JNIEnv* createVM (JavaVM **jvm)
{
JNIEnv *env;                       /* pointer to native method interface */
JavaVMInitArgs vm_args;            /* JDK/JRE 6 VM initialization arguments */
JavaVMOption* options = new JavaVMOption[1]; //holds various JVM optional settings
options[0].optionString = const_cast<char*>("-Djava.class.path="USER_CLASSPATH);
vm_args.version = JNI_VERSION_1_6;         //version of Java platform
vm_args.nOptions = 1;
vm_args.options = options;
vm_args.ignoreUnrecognized = false;
/* load and initialize a Java VM, return a JNI interface * pointer in env */
long status = JNI_CreateJavaVM(jvm, (void**)&env, &vm_args);

if (status == JNI_ERR){
cout << "\n Unable to load JVM \n Exit";
exit(-1);
}

delete options;
return env;
}

метод invokePrismWrapper

float invokePrismWrapper(JavaVM **jvm, JNIEnv *env){
jclass    mainClass       = env->FindClass(MainClass);    //Returns a class object from a fully-qualified name, or NULL if the class cannot be found.
jmethodID classConstructor    = env->GetMethodID(mainClass, "<init>", "()V"); //Returns the method ID for an instance (nonstatic) method of a class
jobject   classObject     = env->NewObject(mainClass, classConstructor); //Constructs a new java object

float outcome = 0;

if (mainClass!=0){
jmethodID methodid = env->GetMethodID(mainClass, "goPrism", "()Ljava/lang/String;");
if (methodid!=0){
jstring result = (jstring)env->CallObjectMethod(classObject, methodid); //returns the result of the calling method, an object
const jbyte *str = (jbyte *)(env)->GetStringUTFChars(result, NULL);  // Returns a pointer to an array of bytes representing the string in modified UTF-8 encoding
outcome = ::atof((char*)str);
env->ReleaseStringUTFChars(result, (char*)str);
cout << "Result: " << outcome << endl;
}
else{
cout << "Method not found!" << endl;
}
return outcome;
}
else{
cout << "Class Not found" << endl;
return -1;
}
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8.6)

FIND_PACKAGE(JNI REQUIRED)

SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -I/usr/lib/jvm/java-6-openjdk-amd64/include -I/usr/lib/jvm/java-6-openjdk-amd64/include/linux -L/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64/server")

SET(CMAKE_EXE_LINKER_FLAGS "-ljvm")

# add the binary tree directory to the search path for include files
INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
INCLUDE_DIRECTORIES(${JNI_INCLUDE_DIRS})

ADD_LIBRARY(PRISMLibrary SHARED JNIWrapper.cpp)

message("JNI:- " ${JNI_LIBRARIES})
message("Source Dir: - " ${PROJECT_SOURCE_DIR})

TARGET_LINK_LIBRARIES (PRISMLibrary ${JNI_LIBRARIES})

Любая помощь с благодарностью.