Rust build-script dependencies generator

This is the Rust build-script dependencies generator for data/IDL files

It is integrated into the build.script build.rs and prints the path-names of data files or test-input-files to console . The output will be evaluated by cargo-build-tool and the compilatoin is re-run if specified files have changed since the last build.

Setup

This illustrates a setup. Intention is to rerun the build-process if the files in directory "data/*" have been modified. During the rerun build, the modified files might be read to generate code with proc_macros.

A complete example can be found at github test-generator/example

Cargo.toml

[package]
name = "datatester"
build = "build.rs"

...
[build-dependencies]
build-deps = "^0.1"
...

build.rs

// declared in Cargo.toml as "[build-dependencies]"
extern crate build_deps;

fn main() {
   // Enumerate files in sub-folder "data/*", being relevant for the test-generation (as example)
    // If function returns with error, exit with error message.
    build_deps::rerun_if_changed_foreach( "data/*" ).unwrap();
}