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

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Setup Toolchain for Mac OS from Scratch
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:link_to_translation:`zh_CN:[中文]`
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Package Manager
===============
To set up the toolchain from scratch, rather than :doc:`downloading a pre-compiled toolchain<macos-setup>`, you will need to install either the 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
See :ref:`Customized Setup of Toolchain <get-started-customized-setup>` section for some of the reasons why installing the toolchain from scratch may be necessary.
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Install Prerequisites
=====================
- install pip::
sudo easy_install pip
- install pyserial::
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pip install --user pyserial
- install CMake & Ninja build:
- If you have Homebrew, you can run::
brew install cmake ninja dfu-util
- If you have MacPorts, you can run::
sudo port install cmake ninja dfu-util
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Compile the Toolchain from Source
=================================
Install dependencies:
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- with MacPorts::
sudo port install gsed gawk binutils gperf grep gettext wget libtool autoconf automake make
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- with Homebrew::
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brew install gnu-sed gawk binutils gperftools gettext wget help2man libtool autoconf automake make
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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::
mkdir -p ~/esp
ln -s /Volumes/ctng ~/esp/ctng-volume
Go into the newly created directory::
cd ~/esp/ctng-volume
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Download ``crosstool-NG`` and build it:
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.. include-build-file:: inc/scratch-build-code.inc
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Build the toolchain::
./ct-ng {IDF_TARGET_TOOLCHAIN_PREFIX}
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./ct-ng build
chmod -R u+w builds/{IDF_TARGET_TOOLCHAIN_PREFIX}
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Toolchain will be built in ``~/esp/ctng-volume/crosstool-NG/builds/{IDF_TARGET_TOOLCHAIN_PREFIX}``. To use it, you need to add ``~/esp/ctng-volume/crosstool-NG/builds/{IDF_TARGET_TOOLCHAIN_PREFIX}/bin`` to ``PATH`` environment variable.
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Next Steps
==========
To carry on with development environment setup, proceed to :ref:`get-started-get-esp-idf`.