# `fuchsia-lockfile` | |
`fuchsia-lockfile` is a host library that coordinates file access from multiple processes. | |
## Building | |
Since this is a host library, the host toolchain needs to be specified for the target. | |
For a `x64`, to add tests for this library to your build, append the following to the `fx set`: | |
`--with //src/lib/fuchsia-lockfile:host_tests\(//build/toolchain:host_x64\)`. | |
## Testing | |
To run the tests: | |
``` | |
fx test //src/lib/fuchsia-lockfile | |
``` |