I want to build libtensorflowLite.so for Android

git clone --recurse-submodules https://github.com/tensorflow/tensorflow.git -b r1.12
cd tensorflow
vim WORKSPACE 

1. modify WORKSPACE:

android_sdk_repository(
   name = "androidsdk",
   api_level = 29,
   build_tools_version = "29.0.0",
   path = "/Users/gongjia/Library/Android/sdk",
)

# Android NDK r12b is recommended (higher may cause issues with Bazel)
android_ndk_repository(
   name="androidndk",
   # path="/Users/gongjia/Library/Android/sdk/ndk-bundle",
   path="/Users/gongjia/Library/Android/sdk/android-ndk-r14b",
   api_level=21
)

2. add in tensorflow/contrib/lite/BUILD

cc_binary(
    name = "libtensorflowLite.so",
    linkopts = ["-shared", "-Wl,-soname=libtensorflowLite.so"],
    visibility = ["//visibility:public"],
    linkshared = 1,
    copts = tflite_copts(),
    deps = [
        ":framework",
        "//tensorflow/contrib/lite/kernels:builtin_ops",
    ],
)

3. exec:

bazel build -c opt //tensorflow/contrib/lite:libtensorflowLite.so   --crosstool_top=//external:android/crosstool --cpu=armeabi-v7a --host_crosstool_top=@bazel_tools//tools/cpp:toolchain --cxxopt="-std=c++11" --verbose_failures

4. result:

ERROR: /Users/gongjia/Documents/github/tensorflow/WORKSPACE:3:1: name 'http_archive' is not defined
ERROR: Error evaluating WORKSPACE file
ERROR: error loading package '': Encountered error while reading extension file 'closure/defs.bzl': no such package '@io_bazel_rules_closure//closure': error loading package 'external': Could not load //external package
ERROR: error loading package '': Encountered error while reading extension file 'closure/defs.bzl': no such package '@io_bazel_rules_closure//closure': error loading package 'external': Could not load //external package
INFO: Elapsed time: 0.082s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (0 packages loaded)

5. Info:

tensorflow: r1.12 configure: default macOS Mojave 10.14.3 python:2.7 bazel: 0.24.0