esp-idf/docs/en/get-started/macos-setup.rst

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Standard Setup of Toolchain for Mac OS
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:link_to_translation:`zh_CN:[中文]`
Install Prerequisites
=====================
ESP-IDF will use the version of Python installed by default on macOS.
- install pip::
sudo easy_install pip
- install CMake & Ninja build:
- If you have HomeBrew_, you can run::
brew install cmake ninja
- If you have MacPorts_, you can run::
sudo port install cmake ninja
- Otherwise, consult the CMake_ and Ninja_ home pages for macOS installation downloads.
- It is strongly recommended to also install ccache_ for faster builds. If you have HomeBrew_, this can be done via ``brew install ccache`` or ``sudo port install ccache`` on MacPorts_.
.. note::
If an error like this is shown during any step::
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
Then you will need to install the XCode command line tools to continue. You can install these by running ``xcode-select --install``.
Installing and setting up Python 3 as default
---------------------------------------------
Basing on macOS `Catalina 10.15 release notes`_, use of Python 2.7 is not recommended and Python will not be included by default in future versions of macOS. Check what Python you currently have::
python --version
If the output is like ``Python 2.7.17``, your default interpreter is Python 2.7. If so, also check if Python 3 isn't already installed on your computer::
python3 --version
If above command returns an error, it means Python 3 is not installed.
Below is an overview of steps to install Python 3 and making it default interpreter.
- Installing with HomeBrew_ can be done as follows::
brew install python3
ln -s /usr/local/bin/python3.8 /usr/local/bin/python
Adjust above directory name ``/usr/local/bin/python3.8`` to point where Python 3 has been installed. To check this directory you can run ``which -a python``.
- If you have MacPorts_, you can run::
sudo port install python38
sudo port select --set python python38
Now open a new terminal session to verify what python is running by default::
python --version
If the output is similar to ``Python 3.8.5``, your installation has been done successfully.
.. note::
This is system-wide change which may affect all of the applications.
Next Steps
==========
To carry on with development environment setup, proceed to :ref:`get-started-get-esp-idf`.
.. _cmake: https://cmake.org/
.. _ninja: https://ninja-build.org/
.. _ccache: https://ccache.samba.org/
.. _homebrew: https://brew.sh/
.. _MacPorts: https://www.macports.org/install.php
.. _Catalina 10.15 release notes: https://developer.apple.com/documentation/macos-release-notes/macos-catalina-10_15-release-notes