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Rename all the files which will be edited substantially in the next commit, without changing their contents Docs will not build for this ocmmit. This is done so that git doesn't decide we renamed xxx-cmake -> xxx-legacy in the next commit, which is what it will infer otherwise (and makes rebasing more of a pain than it should be)
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******************************************
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Setup Linux Toolchain from Scratch (CMake)
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******************************************
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:link_to_translation:`zh_CN:[中文]`
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.. include:: ../cmake-warning.rst
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The following instructions are alternative to downloading binary toolchain from Espressif website. To quickly setup the binary toolchain, instead of compiling it yourself, backup and proceed to section :doc:`linux-setup`.
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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 git wget ncurses-devel flex bison gperf python pyserial python-pyelftools cmake ninja-build ccache
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- Ubuntu and Debian::
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sudo apt-get install git wget libncurses-dev flex bison gperf python python-pip python-setuptools python-serial python-click python-cryptography python-future python-pyparsing python-pyelftools cmake ninja-build ccache
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- Arch::
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sudo pacman -S --needed gcc git make ncurses flex bison gperf python2-pyserial python2-click python2-cryptography python2-future python2-pyparsing python2-pyelftools cmake ninja ccache
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.. note::
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CMake version 3.5 or newer is required for use with ESP-IDF. Older Linux distributions may require updating, enabling of a "backports" repository, or installing of a "cmake3" package rather than "cmake".
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Compile the Toolchain from Source
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=================================
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- Install dependencies:
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- CentOS 7::
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sudo yum install gawk gperf grep gettext ncurses-devel python python-devel automake bison flex texinfo help2man libtool make
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- Ubuntu pre-16.04::
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sudo apt-get install gawk gperf grep gettext libncurses-dev python python-dev automake bison flex texinfo help2man libtool make
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- Ubuntu 16.04 or newer::
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sudo apt-get install gawk gperf grep gettext python python-dev automake bison flex texinfo help2man libtool libtool-bin make
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- Debian 9::
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sudo apt-get install gawk gperf grep gettext libncurses-dev python python-dev automake bison flex texinfo help2man libtool libtool-bin make
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- Arch::
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TODO
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Create the working directory and go into it::
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mkdir -p ~/esp
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cd ~/esp
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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::
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./ct-ng xtensa-esp32-elf
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./ct-ng build
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chmod -R u+w builds/xtensa-esp32-elf
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Toolchain will be built in ``~/esp/crosstool-NG/builds/xtensa-esp32-elf``. To use it, you need to add ``~/esp/crosstool-NG/builds/xtensa-esp32-elf/bin`` to ``PATH`` environment variable.
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Next Steps
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==========
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To carry on with development environment setup, proceed to :ref:`get-started-get-esp-idf-cmake`.
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