Legato Open Source Project is an initiative by Sierra Wireless Inc. which provides an open, secure and easy to use Application Framework for embedded devices. The project enables developers who are not experienced in traditional embedded programming to participate in the exponential growth of the "Internet of Things". Visit legato.io to learn more or visit the Legato forum.
- A maintained Long Term Support (LTS) version of Ubuntu
- Install required packages:
$ sudo apt-get install -y build-essential \ python python-jinja2 python-pkg-resources python-git \ cmake git libsdl-dev diffstat texinfo gawk chrpath \ wget cpio bash ninja-build bc unzip libxml2-utils gcovr \ libcurl4-gnutls-dev zlib1g-dev libbz2-dev \ bsdiff libssl-dev autoconf automake iputils-ping
openjdk-8-jdk (for Java support, at least Java 8 is required),
doxygen graphviz (for doc generation)
- Cross-build toolchain(s)
For Sierra Wireless platforms, toolchains are available at https://source.sierrawireless.com/resources/legato/downloads/
Clone from GitHub
Legato uses git-repo as it is distributed as multiple repositories.
- Install repo:
(on Ubuntu >= 16.04)
$ sudo apt-get install -y repo
OR (on Ubuntu < 16.04)
$ sudo apt-get install -y phablet-tools
$ wget -O ~/bin/repo https://storage.googleapis.com/git-repo-downloads/repo $ chmod a+x ~/bin/repo
- Clone the environment:
$ mkdir workspace $ cd workspace $ repo init -u git://github.com/legatoproject/manifest $ repo sync
You can also clone a specific release:
$ repo init -u git://github.com/legatoproject/manifest -m legato/releases/16.07.0.xml $ repo sync
Install the Legato framework on your development PC
Clone it from GitHub or untar a release archive into a directory
cdinto that directory
Configure your bash shell's environment for the Legato application build tools
$ . bin/configlegatoenv
OR, run the interactive bash shell
Run on Target Devices
For example, to enable support for the Sierra Wireless WP85xx devices, run
Of course, each of these depends on the cross-build toolchain for that target, so ensure that you have the appropriate toolchain installed first.
The path to your toolchain and the prefix of the name of the tools in the toolchain
are specified using the
xxxxxx_TOOLCHAIN_PREFIX environment variables
xxxxxx is replaced with the target platform's ID, such as WP85).
If your toolchain is installed somewhere other than the default location under
ensure that the appropriate environment variables are set to tell the build tools where to find
your toolchain and what its prefix is.
For example, for Sierra Wireless WP85xx devices,
WP85_TOOLCHAIN_DIR must be set to the
path of the directory that contains the file
WP85_TOOLCHAIN_PREFIX must be set to
Following is a list of supported cross-build targets:
|ar7||Sierra Wireless AR755x module||
|ar758x||Sierra Wireless AR758x module||
|ar759x||Sierra Wireless AR759x module||
|ar86||Sierra Wireless AR86xx module||
|wp85||Sierra Wireless WP85xx module||
|wp750x||Sierra Wireless WP750x module||
|wp76xx||Sierra Wireless WP76xx module||
|wp77xx||Sierra Wireless WP77xx module||
The top level directory structure is as follows:
./apps - contains source code for apps.
./bin - created by build system and populated with executable files that run on the development
host (the host that ran the build).
./build - contains the results of the build. Will be created by the build system.
./build/tools - contains build tools that are built and then used by the build system on
the build host to build other things.
./build/<target> - contains the output of a build for a specific target (e.g., ./build/wp85).
./cmake - contains CMake scripts used by the build system to build samples and unit tests.
./components - contains platform-independent components that are used in apps.
./framework - contains the source code for the Legato application framework itself.
./targetFiles - contains some files for installation on target devices that don't need
to be built.
./platformAdaptor - contains components that are specific to certain platforms.
./modules - contains other repositories that are extending Legato.
Once you have completed the first three installation steps above, you will find a set of
HTML documentation under the "Documentation" directory.
Point your web browser at
Documentation/index.html to view it:
The latest release documentation is available at: https://docs.legato.io/latest/
To uninstall Legato from your development PC:
- Delete the directory you unzipped Legato under
- Revert any changes you may have made to your
.bashrc, etc. to set up
_Copyright (C) Sierra Wireless Inc. _