Configuration

The generated Swift module can be configured using a uniffi.toml configuration file.

Available options

The configurations prefixed with experimental_ should be regarded as unstable and more likely to change than other configurations.

Configuration name	Default	Description
`cdylib_name`	`uniffi_{namespace}`[^1]	The name of the compiled Rust library containing the FFI implementation (not needed when using `generate --library`).
`module_name`	`{namespace}`[^1]	The name of the Swift module containing the high-level foreign-language bindings.
`ffi_module_name`	`{module_name}FFI`	The name of the lower-level C module containing the FFI declarations.
`ffi_module_filename`	`{ffi_module_name}`	The filename stem for the lower-level C module containing the FFI declarations.
`generate_module_map`	`true`	Whether to generate a `.modulemap` file for the lower-level C module with FFI declarations. (ignored by `uniffi-bindgen-swift`)
`omit_argument_labels`	`false`	Whether to omit argument labels in Swift function definitions.
`generate_immutable_records`	`false`	Whether to generate records with immutable fields (`let` instead of `var`).
`custom_types`		A map which controls how custom types are exposed to Swift. See the custom types section of the manual
`omit_localized_error_conformance`	`false`	Whether to make generated error types conform to `LocalizedError`.
`omit_checksums`	`false`	Whether to omit checking the library checksums as the library is initialized. Changing this will shoot yourself in the foot if you mixup your build pipeline in any way, but might speed up initialization.

[^1]: namespace is the top-level namespace from your UDL file.

[bindings.swift]
cdylib_name = "mycrate_ffi"
omit_argument_labels = true