Fix dependencies bugs
Change: 116925769
diff --git a/util/python/python_config.sh b/util/python/python_config.sh
index 9515ffa..a5666c2 100755
--- a/util/python/python_config.sh
+++ b/util/python/python_config.sh
@@ -80,9 +80,9 @@
     fi
   done
 
-  ln -s "${python_include}" util/python/python_include
-  ln -s "${python_lib}" util/python/python_lib
-  ln -s "${numpy_include}" third_party/py/numpy/numpy_include
+  ln -sf "${python_include}" util/python/python_include
+  ln -sf "${python_lib}" util/python/python_lib
+  ln -sf "${numpy_include}" third_party/py/numpy/numpy_include
 
   # Write tools/bazel.rc
   echo "# Autogenerated by configure: DO NOT EDIT" > tools/bazel.rc