# Setup | |
Download and install the Dart source tree using the standard instructions for building Dart. | |
To build for Fuchsia, you must first update your `.gclient` file with: | |
``` | |
"custom_vars": { | |
"download_fuchsia_deps": True, | |
}, | |
``` | |
and re-run `gclient sync`. | |
# Building | |
```bash | |
./tools/build.py --mode=release --os=fuchsia --arch=arm64 create_sdk runtime | |
``` | |
# Testing | |
```bash | |
./tools/test.py -nvm-fuchsia-release-arm64 -j4 ffi | |
``` | |