diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a126054f23133a6753ec0d84e957c1c37b8521df..e49a7dc0cfec2f172044c2c01e840546aefa1e1f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,6 +3,7 @@ stages:
   - pycodestyle
   - docs
   - platform_compatible_tests
+  - build_libraries
   - ndk_versions_compatible_tests
   - ops_test
   - api_test
@@ -72,6 +73,11 @@ platform_compatible_tests:
   script:
     - bazel build mace/core:core
 
+build_libraries:
+  stage: build_libraries
+  script:
+    - bash tools/build-standalone-lib.sh
+
 ndk_versions_compatible_tests:
   stage: ndk_versions_compatible_tests
   script:
diff --git a/docs/installation/env_requirement.rst b/docs/installation/env_requirement.rst
index c482712418b1e0afb92970ce0a55bb7226e82ed9..6946a524e22f3284f585f46f9e71fa9604f84176 100644
--- a/docs/installation/env_requirement.rst
+++ b/docs/installation/env_requirement.rst
@@ -30,6 +30,9 @@ Required dependencies
     * - sh
       - pip install -I sh==1.12.14
       - 1.12.14
+    * - Numpy
+      - pip install -I numpy==1.14.0
+      - Required by model validation
 
 Optional dependencies
 ---------------------
@@ -52,15 +55,12 @@ Optional dependencies
     * - Docker
       - `docker installation guide <https://docs.docker.com/install/linux/docker-ce/ubuntu/#set-up-the-repository>`__
       - Required by docker mode for Caffe model
-    * - Numpy
-      - pip install -I numpy==1.14.0
-      - Required by model validation
     * - Scipy
       - pip install -I scipy==1.0.0
       - Required by model validation
     * - FileLock
       - pip install -I filelock==3.0.0
-      - Required by Android run
+      - Required by run on Android
 
 .. note::
 
diff --git a/docs/user_guide/advanced_usage.rst b/docs/user_guide/advanced_usage.rst
index 280fb09cbe391d4cc5fb25c2d5c47cb0901dbd36..b16091978f57c06837f63422e7cf56ca767bd847 100644
--- a/docs/user_guide/advanced_usage.rst
+++ b/docs/user_guide/advanced_usage.rst
@@ -160,6 +160,17 @@ There are two common advanced use cases:
                    ├── mobilenet-v1.a
                    └── mobilenet_v1.data
 
+             # model_graph_format: code
+             # model_data_format: code
+
+             builds
+               ├── include
+               │   └── mace
+               │       └── public
+               │           ├── mace_engine_factory.h
+               │           └── mobilenet_v1.h
+               └── model
+                   └── mobilenet-v1.a
 
     * **3. Deployment**
         * Link `libmace.a` and `${library_name}.a` to your target.
@@ -182,7 +193,7 @@ There are two common advanced use cases:
             // Create Engine from compiled code
             create_engine_status =
                 CreateMaceEngineFromCode(model_name.c_str(),
-                                         nullptr,
+                                         model_data_file, // empty string if model_data_format is code
                                          input_names,
                                          output_names,
                                          device_type,
diff --git a/mace/libmace/mace_runtime.cc b/mace/libmace/mace_runtime.cc
index 04f0ccc7e3a141dddcd6113d7e7b25f31ae21df5..d070e5c6fc021e78d319469d177d08d6d52475bb 100644
--- a/mace/libmace/mace_runtime.cc
+++ b/mace/libmace/mace_runtime.cc
@@ -34,6 +34,7 @@ class FileStorageFactory::Impl {
 };
 
 FileStorageFactory::Impl::Impl(const std::string &path): path_(path) {}
+
 std::unique_ptr<KVStorage> FileStorageFactory::Impl::CreateStorage(
     const std::string &name) {
   return std::move(std::unique_ptr<KVStorage>(
@@ -57,10 +58,13 @@ void SetKVStorageFactory(std::shared_ptr<KVStorageFactory> storage_factory) {
   kStorageFactory = storage_factory;
 }
 
-#ifdef MACE_ENABLE_OPENCL
 // Set OpenCL Compiled Binary paths, just call once. (Not thread-safe)
 void SetOpenCLBinaryPaths(const std::vector<std::string> &paths) {
+#ifdef MACE_ENABLE_OPENCL
   OpenCLRuntime::ConfigureOpenCLBinaryPath(paths);
+#else
+  MACE_UNUSED(paths);
+#endif  // MACE_ENABLE_OPENCL
 }
 
 extern std::string kOpenCLParameterPath;
@@ -70,11 +74,15 @@ void SetOpenCLParameterPath(const std::string &path) {
 }
 
 void SetGPUHints(GPUPerfHint gpu_perf_hint, GPUPriorityHint gpu_priority_hint) {
+#ifdef MACE_ENABLE_OPENCL
   VLOG(1) << "Set GPU configurations, gpu_perf_hint: " << gpu_perf_hint
           << ", gpu_priority_hint: " << gpu_priority_hint;
   OpenCLRuntime::Configure(gpu_perf_hint, gpu_priority_hint);
-}
+#else
+  MACE_UNUSED(gpu_perf_hint);
+  MACE_UNUSED(gpu_priority_hint);
 #endif  // MACE_ENABLE_OPENCL
+}
 
 MaceStatus SetOpenMPThreadPolicy(int num_threads_hint,
                                  CPUAffinityPolicy policy) {
diff --git a/mace/python/tools/encrypt_opencl_codegen.py b/mace/python/tools/encrypt_opencl_codegen.py
index cfb9c91e1c7f3faf9bcc26e5a17be22796f81f4f..957c8a51ee197e7139ab720ca51923cc7827a202 100644
--- a/mace/python/tools/encrypt_opencl_codegen.py
+++ b/mace/python/tools/encrypt_opencl_codegen.py
@@ -87,6 +87,8 @@ def encrypt_opencl_codegen(cl_kernel_dir, output_path):
     with open(output_path, "w") as w_file:
         w_file.write(cpp_cl_encrypted_kernel)
 
+    print('Generate OpenCL kernel done.')
+
 
 def parse_args():
     """Parses command line arguments."""
diff --git a/mace/tools/git/gen_version_source.sh b/mace/tools/git/gen_version_source.sh
index 10309b1d1ee4df05308ef074afb3676b1789d98e..e29931a4978b88646eb65293e601cbe65eea931b 100644
--- a/mace/tools/git/gen_version_source.sh
+++ b/mace/tools/git/gen_version_source.sh
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-MACE_SOURCE_DIR=$(dirname $0)
+MACE_SOURCE_DIR=$(dirname $(dirname $(dirname $(dirname $0))))
 
 OUTPUT_FILENAME=$1
 if [[ -z "${OUTPUT_FILENAME}}" ]]; then
@@ -28,16 +28,16 @@ fi
 
 mkdir -p $OUTPUT_DIR
 
-pushd $MACE_SOURCE_DIR
-
 DATE_STR=$(date +%Y%m%d)
-GIT_VERSION=$(git describe --long --tags)
+GIT_VERSION=$(git --git-dir=${MACE_SOURCE_DIR}/.git --work-tree=${MACE_SOURCE_DIR} describe --long --tags)
 if [[ $? != 0 ]]; then
   GIT_VERSION=unknown-${DATE_STR}
 else
   GIT_VERSION=${GIT_VERSION}-${DATE_STR}
 fi
 
+echo $GIT_VERSION
+
 cat <<EOF > ${OUTPUT_FILENAME}
 // Copyright 2018 Xiaomi, Inc.  All rights reserved.
 //
@@ -61,4 +61,3 @@ const char *MaceVersion() { return "MACEVER-${GIT_VERSION}" + 8; }
 }  // namespace mace
 EOF
 
-popd
diff --git a/repository/git/git_configure.bzl b/repository/git/git_configure.bzl
index b46c74e557fdc061fb3e71216d9938c9eab5b81d..9ef9838f0721af41c6ed765648e716636a1f45ec 100644
--- a/repository/git/git_configure.bzl
+++ b/repository/git/git_configure.bzl
@@ -9,6 +9,9 @@ def _git_version_conf_impl(repository_ctx):
 
   generated_files_path = repository_ctx.path("gen")
 
+  unused_var = repository_ctx.path(Label("//:.git/HEAD"))
+  unused_var = repository_ctx.path(Label("//:.git/refs/heads/master"))
+
   repository_ctx.execute([
       'bash', '%s/mace/tools/git/gen_version_source.sh' % mace_root_path
       , '%s/version' % generated_files_path
@@ -17,5 +20,4 @@ def _git_version_conf_impl(repository_ctx):
 
 git_version_repository = repository_rule(
     implementation = _git_version_conf_impl,
-    local=True,
 )
diff --git a/repository/opencl-kernel/opencl_kernel_configure.bzl b/repository/opencl-kernel/opencl_kernel_configure.bzl
index a0c715c75eaf2478bd18a7b283915b704855029c..1e650b4f64c01a193f1bf1b209dd12ad8d6be211 100644
--- a/repository/opencl-kernel/opencl_kernel_configure.bzl
+++ b/repository/opencl-kernel/opencl_kernel_configure.bzl
@@ -5,6 +5,34 @@ def _opencl_encrypt_kernel_impl(repository_ctx):
       "BUILD",
       Label("//repository/opencl-kernel:BUILD.tpl"))
 
+  unused_var = repository_ctx.path(Label("//:.git/HEAD"))
+  unused_var = repository_ctx.path(Label("//:.git/refs/heads/master"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/activation.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/addn.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/batch_norm.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/bias_add.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/buffer_to_image.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/channel_shuffle.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/common.h"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/concat.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/conv_2d.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/conv_2d_1x1.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/conv_2d_3x3.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/deconv_2d.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/depth_to_space.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/depthwise_conv2d.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/eltwise.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/fully_connected.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/matmul.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/pad.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/pooling.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/reduce_mean.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/resize_bilinear.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/slice.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/softmax.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/space_to_batch.cl"))
+  unused_var = repository_ctx.path(Label("//:mace/kernels/opencl/cl/winograd_transform.cl"))
+
   mace_root_path = str(repository_ctx.path(Label("@mace//:BUILD")))[:-len("BUILD")]
 
   generated_files_path = repository_ctx.path("gen")
@@ -20,5 +48,4 @@ def _opencl_encrypt_kernel_impl(repository_ctx):
 
 encrypt_opencl_kernel_repository = repository_rule(
     implementation = _opencl_encrypt_kernel_impl,
-    local=True,
 )
diff --git a/tools/converter.py b/tools/converter.py
index 36f513e0cb1cee61c719a1a8c79be940ef4f5446..eba4aa0455932e77b0f7d6fff9b4852fef57823e 100644
--- a/tools/converter.py
+++ b/tools/converter.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import argparse
-import filelock
 import glob
 import hashlib
 import os
diff --git a/tools/sh_commands.py b/tools/sh_commands.py
index 1968b37f13d3e077ec75a3e6d4bedf0f0c2edb72..b0adb2c5ae876d26bbfbd62c31cfc415ea92d6fd 100644
--- a/tools/sh_commands.py
+++ b/tools/sh_commands.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import falcon_cli
-import filelock
 import glob
 import logging
 import numpy as np
@@ -69,10 +68,12 @@ def device_lock_path(serialno):
 
 
 def device_lock(serialno, timeout=3600):
+    import filelock
     return filelock.FileLock(device_lock_path(serialno), timeout=timeout)
 
 
 def is_device_locked(serialno):
+    import filelock
     try:
         with device_lock(serialno, timeout=0.000001):
             return False