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我想熟悉JNI API,但無法獲得一個示例C++程序來編譯。未定義的引用'JNI_CreateJavaVM'linux
下面是我用來編譯的命令,下面是我正在編譯的程序。我得到的錯誤是:
/tmp/cczyqqyL.o: In function `main':
/home/nc/Desktop/jni/simple/ctojava/callJava.cpp:16: undefined reference to `JNI_CreateJavaVM'
編譯:
g++ -g -I/usr/lib/jvm/java-7-oracle/include/ -I/usr/lib/jvm/java-7-oracle/include/linux/ -L/usr/bin/java -L/usr/lib/jvm/java-7-oracle/jre/lib/amd64/server/ -ljvm callJava.cpp
C++:
#include <jni.h> /* where everything is defined */
int main(){
JavaVM *jvm; /* denotes a Java VM */
JNIEnv *env; /* pointer to native method interface */
JavaVMInitArgs vm_args;
JavaVMOption options[1];
options[0].optionString = "-Djava.class.path=/home/nc/Desktop/jni/simple/ctojava/";
vm_args.version = JNI_VERSION_1_6;
vm_args.options = options;
vm_args.nOptions = 1;
vm_args.ignoreUnrecognized = JNI_FALSE;
/* Create the Java VM */
int res = JNI_CreateJavaVM(&jvm, (void **)&env, &vm_args); // this is what it can't find
/* invoke the Main.test method using the JNI */
jclass cls = env->FindClass("Hello");
jmethodID mid = env->GetStaticMethodID(cls, "staticInt", "(I)I");
env->CallStaticVoidMethod(cls, mid,10);
/* We are done. */
jvm->DestroyJavaVM();
}
我搜索了這個問題,並嘗試每一個解決方案,我發現,但仍然我得到同樣的錯誤...任何幫助非常感謝!
編輯:喬尼的答案下面的作品(取決於你的編譯器)。如果有人發現這一點:在運行編譯輸出時,不要忘記LD_LIBRARY_PATH = _path_to_your_libjvm.so_,否則它將無法在運行時找到該lib。
LD_LIBRARY_PATH=/usr/lib/jvm/java-7-oracle/jre/lib/amd64/server ./a.out
這應有助於:http://stackoverflow.com/questions/9923495 /未定義參考-SHM-開放已經添加-LRT-旗在這裏/ 9923523#9923523 – hmjd