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+.. _cross_compile_macos :
+
+Cross compilation on MacOS
+==========================
+
+This is a first attempt to support Cross compilation of VPP on MacOS for development (linting, completion, compile_commands.json)
+
+
+**Prerequisites**
+
+* You'll need to install the following packages
+
+.. code-block:: console
+
+  $ pip3 install ply pyyaml jsonschema
+  $ brew install gnu-sed pkg-config ninja crosstool-ng
+
+* You'll also need to install ``clang-format 10.0.0`` to be able to ``make checkstyle``. This can be done with :ref:`this doc<install_clang_format_10_0_0>`
+* You should link the binaries to make them available in your path with their original names e.g. :
+
+.. code-block:: console
+
+  $ ln -s $(which gsed) /usr/local/bin/sed
+
+**Setup**
+
+* Create a `cross compile toolchain <https://crosstool-ng.github.io/>`_
+* Create a case sensitive volume and mount the toolchain in it e.g. in ``/Volumes/xchain``
+* Create a xchain.toolchain file with ``$VPP_DIR/extras/scripts/cross_compile_macos.sh conf /Volumes/xchan``
+
+For now we don't support e-build so dpdk, rdma, quicly won't be compiled as part of ``make build``
+
+To build with the toolchain do:
+
+.. code-block:: console
+
+  $ $VPP_DIR/extras/scripts/cross_compile_macos.sh build
+
+
+To get the compile_commands.json do
+
+.. code-block:: console
+
+  $ $VPP_DIR/extras/scripts/cross_compile_macos.sh cc
+  $ >> ./build-root/build-vpp[_debug]-native/vpp/compile_commands.json
+
+
+
+This should build vpp on MacOS
+
+
+Good luck :)
+
+.. _install_clang_format_10_0_0 :
+
+Installing clang-format 10.0.0
+------------------------------
+
+In order to install clang-format on macos :
+
+.. code-block:: bash
+
+    $ wget https://github.com/llvm/llvm-project/releases/download/llvmorg-10.0.0/clang-10.0.0.src.tar.xz
+    $ tar -xvf clang+llvm-10.0.0-x86_64-apple-darwin.tar.xz
+    $ mv clang+llvm-10.0.0-x86_64-apple-darwin /usr/local/Cellar/
+    $ sudo ln -s ../Cellar/clang+llvm-10.0.0-x86_64-apple-darwin/bin/clang-format /usr/local/bin/clang-format
+    $ sudo ln -s ../Cellar/clang+llvm-10.0.0-x86_64-apple-darwin/bin/clang-format /usr/local/bin/clang-format-10
+    $ sudo ln -s ../Cellar/clang+llvm-10.0.0-x86_64-apple-darwin/share/clang/clang-format-diff.py /usr/local/bin/clang-format-diff-10
+
+Source `Clang website <https://releases.llvm.org/download.html#git>`_