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.
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
``` [package] name = "datatester" build = "build.rs"
... [build-dependencies] build-deps = "^0.1" ... ```
```
// 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_paths( "data/" ).unwrap();
// Adding the parent directory "data" to the watch-list will capture new-files being added
build_deps::rerun_if_changed_paths( "data" ).unwrap();
} ```