.. _installation_linux: Development Environment Setup on Linux ###################################### .. important:: This section only describes OS-specific setup instructions; it is the first step in the complete Zephyr :ref:`getting_started`. This section describes how to set up a Zephyr development environment on the following Linux distributions: * Ubuntu 16.04 LTS or 18.04 LTS 64-bit * Fedora 28 64-bit * Clear Linux * Arch Linux Where needed, instructions are given which only apply to specific Linux distributions. Update Your Operating System **************************** Ensure your host system is up to date before proceeding. On Ubuntu: .. code-block:: console sudo apt-get update sudo apt-get upgrade On Fedora: .. code-block:: console sudo dnf upgrade Note that having a newer version available for an installed package (as reported by ``dnf check-update``) does not imply a subsequent ``dnf upgrade`` will install it, because it must also ensure dependencies and other restrictions are satisfied. On Clear Linux: .. code-block:: console sudo swupd update On Arch Linux: .. code-block:: console sudo pacman -Syu .. _linux_requirements: Install Requirements and Dependencies ************************************* .. NOTE FOR DOCS AUTHORS: DO NOT PUT DOCUMENTATION BUILD DEPENDENCIES HERE. This section is for dependencies to build Zephyr binaries, *NOT* this documentation. If you need to add a dependency only required for building the docs, add it to doc/README.rst. (This change was made following the introduction of LaTeX->PDF support for the docs, as the texlive footprint is massive and not needed by users not building PDF documentation.) Install the following packages using your system's package manager. Note that both Ninja and Make are installed; you may prefer only to install one. On Ubuntu: .. code-block:: console sudo apt-get install --no-install-recommends git cmake ninja-build gperf \ ccache dfu-util device-tree-compiler wget \ python3-pip python3-setuptools python3-wheel xz-utils file make gcc \ gcc-multilib On Fedora: .. code-block:: console sudo dnf group install "Development Tools" "C Development Tools and Libraries" dnf install git cmake ninja-build gperf ccache dfu-util dtc wget \ python3-pip xz file glibc-devel.i686 libstdc++-devel.i686 On Clear Linux: .. code-block:: console sudo swupd bundle-add c-basic dev-utils dfu-util dtc \ os-core-dev python-basic python3-basic On Arch: .. code-block:: console sudo pacman -S git cmake ninja gperf ccache dfu-util dtc wget \ python-pip python-setuptools python-wheel xz file make .. important:: Zephyr requires a recent version of CMake. Read through the rest of the section below to verify the version you have installed is recent enough to build Zephyr. CMake version 3.13.1 or higher is required. Check what version you have by using ``cmake --version``. If you have an older version, there are several ways of obtaining a more recent one: * Use ``pip``: .. code-block:: console pip3 install --user cmake * Download and install from the pre-built binaries provided by the CMake project itself in the `CMake Downloads`_ page. For example, to install version 3.13.1 in :file:`~/bin/cmake`: .. code-block:: console mkdir $HOME/bin/cmake && cd $HOME/bin/cmake wget https://github.com/Kitware/CMake/releases/download/v3.13.1/cmake-3.13.1-Linux-x86_64.sh yes | sh cmake-3.13.1-Linux-x86_64.sh | cat echo "export PATH=$PWD/cmake-3.13.1-Linux-x86_64/bin:\$PATH" >> $HOME/.zephyrrc * Check your distribution's beta or unstable release package library for an update. .. note:: If you have installed a recent version of CMake using one of the approaches listed above, you might want to uninstall the one provided by your distribution's package manager (``apt``, ``dnf``, ``swupd``, ``pacman``, etc.) in order to avoid version conflicts. .. _zephyr_sdk: Install the Zephyr Software Development Kit (SDK) ************************************************* .. note:: Use of the Zephyr SDK is optional, but recommended. Some of the requirements and dependencies in the previous section are only needed for installing the SDK. Zephyr's :abbr:`SDK (Software Development Kit)` contains all necessary tools and cross-compilers needed to build Zephyr on all supported architectures. Additionally, it includes host tools such as custom QEMU binaries and a host compiler for building host tools if necessary. The SDK supports the following target architectures: * :abbr:`X86 (Intel Architecture 32 bits)` * :abbr:`X86 IAMCU ABI (Intel Architecture 32 bits IAMCU ABI)` * :abbr:`Arm (Advanced RISC Machine)` * :abbr:`ARC (Argonaut RISC Core)` * :abbr:`Nios II` * :abbr:`Xtensa` * :abbr:`RISC-V` Follow these steps to install the SDK on your Linux host system. #. Download the latest SDK as a self-extracting installation binary: .. code-block:: console wget https://github.com/zephyrproject-rtos/meta-zephyr-sdk/releases/download/0.9.5/zephyr-sdk-0.9.5-setup.run (You can change *0.9.5* to another version if needed; the `Zephyr Downloads`_ page contains all available SDK releases.) #. Run the installation binary: .. code-block:: console cd sh zephyr-sdk-0.9.5-setup.run .. important:: If this fails, make sure Zephyr's dependencies were installed as described in `Install Requirements and Dependencies`_. #. Follow the installation instructions on the screen. The toolchain's default installation location is :file:`/opt/zephyr-sdk/`, but it is recommended to install the SDK under your home directory instead. To install the SDK in the default location, you need to run the installation binary as root. #. To use the Zephyr SDK, export the following environment variables and use the target location where SDK was installed: .. code-block:: console export ZEPHYR_TOOLCHAIN_VARIANT=zephyr export ZEPHYR_SDK_INSTALL_DIR= .. _sdkless_builds: Building on Linux without the Zephyr SDK **************************************** The Zephyr SDK is provided for convenience and ease of use. It provides toolchains for all Zephyr target architectures, and does not require any extra flags when building applications or running tests. In addition to cross-compilers, the Zephyr SDK also provides prebuilt host tools. It is, however, possible to build without the SDK's toolchain by using another toolchain as as described in the main :ref:`getting_started` document. As already noted above, the SDK also includes prebuilt host tools. To use the SDK's prebuilt host tools with a toolchain from another source, keep the :envvar:`ZEPHYR_SDK_INSTALL_DIR` environment variable set to the Zephyr SDK installation directory. To build without the Zephyr SDK's prebuilt host tools, the :envvar:`ZEPHYR_SDK_INSTALL_DIR` environment variable must be unset before you run ``source zephyr-env.sh`` later on in the Getting Started Guide. To make sure this variable is unset, run: .. code-block:: console unset ZEPHYR_SDK_INSTALL_DIR .. _Zephyr Downloads: https://www.zephyrproject.org/developers/#downloads .. _CMake Downloads: https://cmake.org/download