android studio CMake编译出错，直接用生成好的.a文件

[xiaozhi003]

用Android studio关联已经生成好的.a文件，编译出现如下错误： Error:error: linker command failed with exit code 1 (use -v to see invocation)

CMakeLists.txt如下：

# 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)
#C++编译
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")

set(OpenSSL_DIR ${CMAKE_SOURCE_DIR}/keystore)

# 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(crypto STATIC IMPORTED)
add_library(ssl STATIC IMPORTED)

set_target_properties( # Specifies the target library.
                       crypto

                       # Specifies the parameter you want to define.
                       PROPERTIES IMPORTED_LOCATION

                       # Provides the path to the library you want to import.
                       ${OpenSSL_DIR}/lib/${ANDROID_ABI}/libcrypto.a )

set_target_properties( # Specifies the target library.
                       ssl

                       # Specifies the parameter you want to define.
                       PROPERTIES IMPORTED_LOCATION

                       # Provides the path to the library you want to import.
                       ${OpenSSL_DIR}/lib/${ANDROID_ABI}/libssl.a )

add_library( # Sets the name of the library.
             keystore

             # Sets the library as a shared library.
             SHARED

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

include_directories( ${OpenSSL_DIR}/include )

# 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_include_directories(keystore PRIVATE
                           ${OpenSSL_DIR}/include)

target_link_libraries( # Specifies the target library.
                       keystore
                       crypto
                       ssl

                       # Links the target library to the log library
                       # included in the NDK.

                       ${log-lib} )

我的环境： Android Studio 2.3.3 NDK：最新的ndk-bundle（应该是14r以上）

测试过程 1.猜想是路径不对，路径不对报的是其他的错，所以路径肯定没问题 2.Android PLATFORM版本有问题，是否需要设置版本？

[xiaozhi003]

已解决，缺少 zlib

[cjxqhhh]

请问是怎么解决这个zlib的问题的呢

[wqqgt]

try build.gradle add -lz flag externalNativeBuild { cmake { cppFlags "-lz" } }