title: needed by '../../../../build/intermediates/cmake/debug/obj/armeabi-v7a/libnative-lib.so', missing and no known rule to make it
body: <p>I want to implement AEs and RSA in my project.i downloaded pre built openssl and included in my project.   After including openssl in my project i am getting error as above mentioned.i searched on SO some answers mentioned to include <strong>set_target_properties</strong> in CMake(U can check my cmake below) but still no use.  </p>
  
  <p>My CMakeLists.txt </p>
  
  <pre><code>   # For more information about using CMake with Android Studio, read the
  # documentation: https://d.android.com/studio/projects/add-native-code.html
  
  # Sets the minimum version of CMake required to build the native library.
  
  cmake_minimum_required(VERSION 3.4.1)
  
  # 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 )
               add_library(openssl SHARED IMPORTED)
               set_target_properties (openssl PROPERTIES IMPORTED_LOCATION ${PROJECT_SOURCE_DIR}/src/main/jniLibs/${ANDROID_ABI}/lib/libcrypto.so )
  
  
  # 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.
  
  include_directories(jni/include/)
  
  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 this
  # build script, prebuilt third-party libraries, or system libraries.
  
  target_link_libraries( # Specifies the target library.
                         native-lib
                          ${CMAKE_CURRENT_SOURCE_DIR}/jniLibs/${ANDROID_ABI}/lib/libcrypto.a
                          ${CMAKE_CURRENT_SOURCE_DIR}/jniLibs/${ANDROID_ABI}/lib/libssl.a
                         # Links the target library to the log library
                         # included in the NDK.
                         ${log-lib} )
  </code></pre>
  
  <p>and My build.graddle is here</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  
  android {
      compileSdkVersion 26
      defaultConfig {
          applicationId "com.example.manvish.prebuiltcrypto"
          minSdkVersion 14
          targetSdkVersion 26
          versionCode 1
          versionName "1.0"
          testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
          externalNativeBuild {
              cmake {
                  cppFlags ""
                  abiFilters "x86_64", "armeabi-v7a"
              }
          }
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
      externalNativeBuild {
          cmake {
              path "CMakeLists.txt"
          }
      }
  }
  
  dependencies {
      implementation fileTree(dir: 'libs', include: ['*.jar'])
      implementation 'com.android.support:appcompat-v7:26.1.0'
      implementation 'com.android.support.constraint:constraint-layout:1.0.2'
      testImplementation 'junit:junit:4.12'
      androidTestImplementation 'com.android.support.test:runner:1.0.1'
      androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
  }
  </code></pre>
  
  <p>help me to resolve this issue?</p>
  
  <p>The complete error log is here</p>
  
  <pre><code>    FAILURE: Build failed with an exception.
  
  * What went wrong:
  Execution failed for task ':app:externalNativeBuildDebug'.
  &gt; Build command failed.
    Error while executing process /home/manvish/Android/Sdk/cmake/3.6.4111459/bin/cmake with arguments {--build /home/manvish/Gajanand/PrebuiltCrypto/app/.externalNativeBuild/cmake/debug/armeabi-v7a --target native-lib}
    ninja: error: '../../../../jniLibs/armeabi-v7a/lib/libcrypto.a', needed by '../../../../build/intermediates/cmake/debug/obj/armeabi-v7a/libnative-lib.so', missing and no known rule to make it
  
  
  * Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
  
  * Get more help at https://help.gradle.org
  
  BUILD FAILED in 2s
  </code></pre>