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docs/en/get-started/macos-setup-scratch.rst

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+***************************************
+Setup Toolchain for Mac OS from Scratch
+***************************************
+
+Install Prerequisites
+=====================
+
+- install pip::
+
+    sudo easy_install pip
+
+- install pyserial::
+
+    sudo pip install pyserial
+
+
+Compile the Toolchain from Source
+=================================
+
+- Install dependencies:
+
+  - Install either MacPorts_ or homebrew_ package manager. MacPorts needs a full XCode installation, while homebrew only needs XCode command line tools.
+    
+    .. _homebrew: https://brew.sh/
+    .. _MacPorts: https://www.macports.org/install.php
+
+  - with MacPorts::
+
+        sudo port install gsed gawk binutils gperf grep gettext wget libtool autoconf automake
+
+  - with homebrew::
+
+        brew install gnu-sed gawk binutils gperftools gettext wget help2man libtool autoconf automake
+
+Create a case-sensitive filesystem image::
+
+    hdiutil create ~/esp/crosstool.dmg -volname "ctng" -size 10g -fs "Case-sensitive HFS+"
+
+Mount it::
+
+    hdiutil mount ~/esp/crosstool.dmg
+
+Create a symlink to your work directory::
+
+    cd ~/esp
+    ln -s /Volumes/ctng crosstool-NG
+
+Download ``crosstool-NG`` and build it::
+
+    cd ~/esp
+    git clone -b xtensa-1.22.x https://github.com/espressif/crosstool-NG.git
+    cd crosstool-NG
+    ./bootstrap && ./configure --enable-local && make install
+
+Build the toolchain::
+
+    ./ct-ng xtensa-esp32-elf
+    ./ct-ng build
+    chmod -R u+w builds/xtensa-esp32-elf
+
+Toolchain will be built in ``~/esp/crosstool-NG/builds/xtensa-esp32-elf``. Follow :ref:`instructions for standard setup <setup-macos-toolchain-add-it-to-path>` to add the toolchain to your ``PATH``.
+
+
+Next Steps
+==========
+
+To carry on with development environment setup, proceed to section :ref:`get-started-get-esp-idf`.