[GitHub] sandeep-krishnamurthy commented on a change in pull request #10951: [MXNET-545] Fix broken cython build

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sandeep-krishnamurthy commented on a change in pull request #10951: [MXNET-545] Fix broken cython build
URL: https://github.com/apache/incubator-mxnet/pull/10951#discussion_r207944134
 
 

 ##########
 File path: docs/install/index.md
 ##########
 @@ -459,7 +459,16 @@ $ make -j $(nproc) USE_OPENCV=1 USE_BLAS=openblas
 $ sudo apt-get install -y python-dev python-setuptools python-pip libgfortran3
 ```
 
-**Step 2** Install the MXNet Python binding.
+**Step 2** Build cython modules (optional).
+
+```bash
+$ sudo apt-get install -y cython
+$ make cython # You can set the python executable with `PYTHON` flag, e.g., make cython PYTHON=python3
+```
+
+Note that you can control the use of the cython modules at runtime via the environment variables `MXNET_ENABLE_CYTHON` and `MXNET_ENFORCE_CYTHON`. See [here](/faq/env_var.html) for details.
 
 Review comment:
   If user is building Cython in this step, then I think we can assume he wants to use Cython. Can we also provide steps to set the environment variables here?

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