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Setup Toolchain for Mac OS from Scratch
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Install Prerequisites
=====================
- install pip::
sudo easy_install pip
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.. note ::
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`` pip `` will be used later for installing :ref: `the required Python packages <get-started-get-packages>` .
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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.
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.. _homebrew: https://brew.sh/
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.. _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
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Download `` crosstool-NG `` and build it:
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.. include :: /_build/inc/scratch-build-code.inc
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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` .
