This guide provide instructions on how to configure and build Fuchsia on a host machine.
The steps are:
Before you start, check out the following requirements:
Complete the Download the Fuchsia source code guide to download the Fuchsia source code and set up the Fuchsia development environment on your machine.
You can build Fuchsia only on a machine with one of the following host architectures:
Note: Windows and ARM64 are not supported.
Fuchsia's build configuration informs the build system which product to build and which architecture to build for.
To set your Fuchsia build configuration, run the following fx set
command:
fx set {{ '<var>' }}PRODUCT{{ '</var>' }}.{{ '<var>' }}BOARD{{ '</var>' }}
Replace the following:
PRODUCT
: The Fuchsia product that you want to build; for example, core
and workstation
.BOARD
: The architecture of the product; for example, x64
and qemu-x64
The example command below sets a build configuration to core.qemu-x64
:
fx set core.qemu-x64
In this example:
core
is a product with the minimum feature set of Fuchsia, including common network capabilities.qemu-x64
is a board that refers to the x64 architecture of the Fuchsia emulator (FEMU), which is based on the open source emulator QEMU{:.external}.On the other hand, the example below sets the build configuration to workstation.x64
, which is commonly used to install Fuchsia's Workstation product on a device:
fx set workstation.x64
For more information on the build configuration, see Configure a build.
Note: This step is not required to build Fuchsia, but it's recommended since it can save you a lot of time when you build Fuchsia.
To speed up the Fuchsia build, you can use one of the following services:
Goma{:.external} is a distributed compiler service for open source projects such as Chrome, Android and Fuchsia.
If you have access to Goma, enable a Goma client on your machine:
fx goma
If you do not have access to Goma, but want to accelerate the Fuchsia build locally, use ccache{:.external} to cache artifacts from previous builds.
{Linux}
To use ccache
on Linux, install the following package:
sudo apt install ccache
{macOS}
For macOS, see Using CCache on Mac{:.external} for installation instructions.
ccache
is enabled automatically if your CCACHE_DIR
environment variable refers to an existing directory.
To override this default behavior, specify the following flags to fx set
:
Force the use of ccache
even when other accelerators are available:
Disable the use of ccache
:
The fx build
command executes the build to transform source code into packages and other build artifacts.
To build Fuchsia, run the following command:
Note: Building Fuchsia can take up to 90 minutes.
fx build
When you modify source code, run the fx build
command again to perform an incremental build, or run the fx -i build
command to start a watcher, which automatically builds whenever you update the source code.
For more information on building Fuchsia, see Execute a build.
To launch the Fuchsia emulator (FEMU) on your machine, see Start the Fuchsia emulator.
However, if you want to run Fuchsia on a hardware device, see Install Fuchsia on a device instead.