如何使用Cmake将Android项目与libandroid链接？

Question

所以，我有C++支持的Android项目。在我的项目中有一些未定义的引用在尝试构建C++代码时，在回答我的第一个问题之后，这里有什么问题link，我找不到一个方法来实现它。

Answer 1

如果你有cmake的，看起来像这样：

cmake_minimum_required(VERSION 3.4.1) 

# OpenCV stuff 
include_directories(D:\\opencv-3.2.0-android-sdk\\OpenCV-android-sdk\\sdk\\native\\jni\\include) 
add_library(lib_opencv SHARED IMPORTED) 
set_target_properties(lib_opencv PROPERTIES IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/src/main/jniLibs/${ANDROID_ABI}/libopencv_java3.so) 
add_compile_options(-std=c++11) 

# Creates and names a library, sets it as either STATIC 
# or SHARED, and provides the relative paths to its source code. 
# You can define multiple libraries, and CMake builds them for you. 
# Gradle automatically packages shared libraries with your APK. 

add_library(# Sets the name of the library. 
      native-lib 

      # Sets the library as a shared library. 
      SHARED 

      # Provides a relative path to your source file(s). 
      src/main/cpp/native-lib.cpp) 

# Searches for a specified prebuilt library and stores the path as a 
# variable. Because CMake includes system libraries in the search path by 
# default, you only need to specify the name of the public NDK library 
# you want to add. CMake verifies that the library exists before 
# completing its build. 

find_library(# Sets the name of the path variable. 
       log-lib 

       # Specifies the name of the NDK library that 
       # you want CMake to locate. 
       log) 

# Specifies libraries CMake should link to your target library. You 
# can link multiple libraries, such as libraries you define in the 
# build script, prebuilt third-party libraries, or system libraries. 

target_link_libraries(# Specifies the target library. 
         native-lib 
         -ljnigraphics 
         lib_opencv 

         # Links the target library to the log library 
         # included in the NDK. 
         ${log-lib}) 

只是改变部分是这样的：

target_link_libraries(# Specifies the target library. 
         native-lib 
         -ljnigraphics 
         -landroid # Add this. 
         lib_opencv 

         # Links the target library to the log library 
         # included in the NDK. 
         ${log-lib})