无法在Android中使用CMake链接库:无法加载本机库

Question

一旦我想通过target_link_libraries(...)添加自己的库，我的应用程序就会崩溃，出现以下错误：

E/AndroidRuntime: FATAL EXCEPTION: main
Process: my.process, PID: 3651
java.lang.RuntimeException: Unable to start activity ComponentInfo{my.process/android.app.NativeActivity}: java.lang.IllegalArgumentException: Unable to load native library: /data/app/my.process/lib/x86/libnative-activity.so

我在src/cpp/main/CMakeLists.txt中的src/cpp/main/CMakeLists.txt文件如下所示：

cmake_minimum_required(VERSION 3.4.1)

# build native_app_glue as a static lib
add_library(app-glue STATIC
            ${ANDROID_NDK}/sources/android/native_app_glue/android_native_app_glue.c)

# now build app's shared lib
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")

# Native-Activity
add_library(native-activity SHARED "")

# Native-Library
add_library(native-lib SHARED "")

include("Native/CMakeLists.txt")

# Link the native-activity
target_sources(native-activity PRIVATE "${CMAKE_CURRENT_LIST_DIR}/main.cpp")

target_include_directories(native-activity PRIVATE
                           ${ANDROID_NDK}/sources/android/native_app_glue)

# add lib dependencies
target_link_libraries(native-activity
                      android
                      app-glue
                      log)

target_link_libraries(native-activity native-lib)

CMake文件在src/cpp/main/Native/CMakeLists.txt中如下所示：

set_target_properties(native-lib PROPERTIES LINKER_LANGUAGE CXX)

如果我从CMake编译中的第一个src/cpp/main/CMakeLists.txt文件中删除了下面一行，就会产生这样的结果：

target_link_libraries(native-activity native-lib)

我做错什么了？

Answer 1

对我起作用的是使用图书馆(.) CMake命令，并使用完整的路径将库本机库与本机活动链接起来。

工作的CMake文件如下所示：

cmake_minimum_required(VERSION 3.4.1)

# build native_app_glue as a static lib
add_library(app-glue STATIC
            ${ANDROID_NDK}/sources/android/native_app_glue/android_native_app_glue.c)

# now build app's shared lib
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")

# Native-Activity
add_library(native-activity SHARED "")

# Native-Library
add_library(native-lib SHARED "")

include("Native/CMakeLists.txt")

# Link the native-activity
target_sources(native-activity PRIVATE "${CMAKE_CURRENT_LIST_DIR}/main.cpp")

target_include_directories(native-activity PRIVATE
                           ${ANDROID_NDK}/sources/android/native_app_glue)

# add lib dependencies
target_link_libraries(native-activity
                      android
                      app-glue
                      log)

find_library(native-lib my-native-lib)

target_link_libraries(native-activity ${my-native-lib})