Polish cmake files and runtime apis (#36)

* Add custom operator for onnxruntime ans fix paddle backend

* Polish cmake files and runtime apis

* Remove copy libraries

* fix some issue

* fix bug

* fix bug

copy_directory.py

@@ -0,0 +1,32 @@
+# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import shutil
+import os
+import sys
+
+
+def copy_directory(src, dst):
+    if os.path.exists(dst):
+        raise Exception("Destination {} is already exist.".format(dst))
+    if not os.path.exists(src):
+        raise Exception("Source {} is not exist.".format(src))
+    try:
+        shutil.copytree(src, dst, symlinks=True)
+    except:
+        raise Exception("Copy {} to {} failed.".format(src, dst))
+
+
+if __name__ == "__main__":
+    copy_directory(sys.argv[1], sys.argv[2])