01887f71e7
Special thanks to @ulfalizer for the helpful suggestions regarding kconfiglib. "rsource" option is available for relative path includes Closes https://github.com/espressif/esp-idf/issues/4064
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*******************************************************
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Standard Setup of Toolchain for Linux (Legacy GNU Make)
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*******************************************************
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:link_to_translation:`zh_CN:[中文]`
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.. include:: ../gnu-make-legacy.rst
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Install Prerequisites
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=====================
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To compile with ESP-IDF you need to get the following packages:
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- CentOS 7::
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sudo yum install gcc git wget make flex bison gperf python python2-cryptography
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- Ubuntu and Debian::
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sudo apt-get install gcc git wget make flex bison gperf python python-pip python-setuptools python-serial python-cryptography python-future python-pyparsing python-pyelftools
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- Arch::
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sudo pacman -S --needed gcc git make flex bison gperf python2-pyserial python2-cryptography python2-future python2-pyparsing python2-pyelftools
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.. note::
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Some older Linux distributions may be missing some of the Python packages listed above (or may use ``pyserial`` version 2.x which is not supported by ESP-IDF). It is possible to install these packages via ``pip`` instead - as described in section :ref:`get-started-get-packages-legacy`.
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Toolchain Setup
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===============
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.. include:: /_build/inc/download-links.inc
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ESP32 toolchain for Linux is available for download from Espressif website:
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- for 64-bit Linux:
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|download_link_linux64|
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- for 32-bit Linux:
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|download_link_linux32|
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1. Download this file, then extract it in ``~/esp`` directory:
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- for 64-bit Linux:
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.. include:: /_build/inc/unpack-code-linux64.inc
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- for 32-bit Linux:
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.. include:: /_build/inc/unpack-code-linux32.inc
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.. _setup-linux-toolchain-add-it-to-path-legacy:
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2. The toolchain will be extracted into ``~/esp/xtensa-esp32-elf/`` directory.
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To use it, you will need to update your ``PATH`` environment variable in ``~/.profile`` file. To make ``xtensa-esp32-elf`` available for all terminal sessions, add the following line to your ``~/.profile`` file::
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export PATH="$HOME/esp/xtensa-esp32-elf/bin:$PATH"
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Alternatively, you may create an alias for the above command. This way you can get the toolchain only when you need it. To do this, add different line to your ``~/.profile`` file::
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alias get_esp32='export PATH="$HOME/esp/xtensa-esp32-elf/bin:$PATH"'
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Then when you need the toolchain you can type ``get_esp32`` on the command line and the toolchain will be added to your ``PATH``.
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.. note::
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If you have ``/bin/bash`` set as login shell, and both ``.bash_profile`` and ``.profile`` exist, then update ``.bash_profile`` instead. In CentOS, ``alias`` should set in ``.bashrc``.
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3. Log off and log in back to make the ``.profile`` changes effective. Run the following command to verify if ``PATH`` is correctly set::
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printenv PATH
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You are looking for similar result containing toolchain's path at the beginning of displayed string::
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$ printenv PATH
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/home/user-name/esp/xtensa-esp32-elf/bin:/home/user-name/bin:/home/user-name/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
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Instead of ``/home/user-name`` there should be a home path specific to your installation.
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Permission issues /dev/ttyUSB0
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------------------------------
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With some Linux distributions you may get the ``Failed to open port /dev/ttyUSB0`` error message when flashing the ESP32. :ref:`This can be solved by adding the current user to the dialout group<linux-dialout-group-legacy>`.
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Next Steps
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==========
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To carry on with development environment setup, proceed to section :ref:`get-started-get-esp-idf-legacy`.
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Related Documents
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=================
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.. toctree::
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:maxdepth: 1
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linux-setup-scratch
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.. _AUR: https://wiki.archlinux.org/index.php/Arch_User_Repository
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