我需要从C ++运行Java，一般来说问题已经解决，但我的make系统或脚本出了问题，有一个创建JVM的C ++文件：
#include <jni.h> #include <iostream> #include <string> using namespace std; int main() { JavaVMOption jvmopt[1]; jvmopt[0].optionString = const_cast<char *>("-Djava.class.path=."); JavaVMInitArgs vmArgs; vmArgs.version = JNI_VERSION_1_2; vmArgs.nOptions = 1; vmArgs.options = jvmopt; vmArgs.ignoreUnrecognized = JNI_TRUE; // Create the JVM JavaVM *javaVM; JNIEnv *jniEnv; long flag = JNI_CreateJavaVM(&javaVM, (void **) &jniEnv, &vmArgs); return 0; }
有一个CMakeLists.txt文件：
cmake_minimum_required(VERSION 3.12) project(games_test_system) include_directories(/usr/java/jdk-10.0.2/include /usr/java/jdk-10.0.2/include/linux) link_directories(/usr/java/jdk-10.0.2/lib /usr/java/jdk-10.0.2/lib/server) set(CMAKE_CXX_STANDARD 14) add_executable(games_test_system main.cpp)
运行它：
/opt/clion-2018.2.2/bin/cmake/linux/bin/cmake --build /home/obabichev/CLionProjects/games-test-system/cmake-build-debug --target games_test_system -- -j 4
得到这个错误：
[ 50%] Linking CXX executable games_test_system CMakeFiles/games_test_system.dir/main.cpp.o: In function `main': /home/obabichev/CLionProjects/games-test-system/main.cpp:21: undefined reference to `JNI_CreateJavaVM' collect2: error: ld returned 1 exit status CMakeFiles/games_test_system.dir/build.make:83: recipe for target 'games_test_system' failed make[3]: *** [games_test_system] Error 1 CMakeFiles/Makefile2:72: recipe for target 'CMakeFiles/games_test_system.dir/all' failed make[2]: *** [CMakeFiles/games_test_system.dir/all] Error 2 CMakeFiles/Makefile2:84: recipe for target 'CMakeFiles/games_test_system.dir/rule' failed make[1]: *** [CMakeFiles/games_test_system.dir/rule] Error 2 Makefile:118: recipe for target 'games_test_system' failed make: *** [games_test_system] Error 2
在CMakeLists.txt文件中，添加
find_package(JNI REQUIRED)
target_link_libraries(games_test_system ${JNI_LIBRARIES})
而不是手动选择目录也可以依赖CMake：
include_directories(${JNI_INCLUDE_DIRS}
此内容由惯性聚合(RSS阅读器)自动聚合整理，仅供阅读参考。 原文来自 — 版权归原作者所有。