# The `tectonic_cfg_support` crate

This crate helps `build.rs` files deal with `CARGO_CFG_TARGET_*` variables. When
cross-compiling, these variables must be used instead of constructs such as
`cfg!(target_arch = ...)` because the `build.rs` script is compiled to target
the build host environment, not the true target environment. This crate is part
of [the Tectonic project](https://tectonic-typesetting.github.io/).

[![](http://meritbadge.herokuapp.com/tectonic_cfg_support)](https://crates.io/crates/tectonic_cfg_support)

- [API documentation](https://docs.rs/tectonic_cfg_support/).
- [Main Git repository](https://github.com/tectonic-typesetting/tectonic/).