Clap: Macro undefined when using YAML

[milgner]

Cargo.toml:

[dependencies]
clap = { git = "https://github.com/kbknapp/clap-rs.git" }

Simple main.rs:

#[macro_use] extern crate clap;

use clap::App;

fn main() {
    let yml = load_yaml!("cli.yml");
    let matches = App::from_yaml(yml).get_matches();
}

And cargo build produces: src/main.rs:11:15: 11:24 error: macro undefined: 'load_yaml!

Using the regular, code-based App construction works, only I can't get the YAML loading feature to work.

[Vinatorul]

Thank you for your report!
To use YAML feature you need to specify it in Cargo.toml. You can do it in two ways:

[dependencies.clap]
features = ["yaml"]

or

[dependencies]
clap = { features = ["yaml"] }

Take a look at yaml example

If you will have further questions, or this advice willn't help you - let us know!

[milgner]

Many thanks! Sorry for opening a ticket then: looks like my noobness with regards to Rust was the problem then :)
Also, thanks for a great library, a good option parser is really a boon to have!

[Vinatorul]

No problem!
If you will have futher questions - feel free to ask them. You can use our gitter channel for it.

[staszewski]

@Vinatorul @milgner How did you manage to run this code? When i do cargo run --features yaml with cargo.toml looking like in this

[dependencies]
clap = { features = ["yaml"] }
or 
[dependencies.clap]
features = ["yaml"]

i get error

:!cargo run --features yaml
error: Package `fun v0.1.0 (/Users/XXX/Projekty/rust/fun)` does not have these fe
atures: `yaml`

shell returned 101

[pksunkara]

You have to do just cargo run.