Out of source builds (external build directory) with Cargo?

Question

Having used CMake, I\'ve become used to out-of-source builds, which are encouraged with CMake. How can out-of-source builds be done with Cargo?

---

Using in-source-bui

Answer 1

While useful manually setting this up isn't all that convenient, I wanted to be able to build multiple crates within a source tree, having all of them out-of-source, something that ../target-dir configuration option wouldn't achieve.

---

Helper utility for convenient out-of-source builds

Using the environment variable I've written a small utility to wrap cargo, so it automatically builds out-of-source, supporting crates both at the top-level, on in a subdirectory of the source tree.

---

Thanks to Lukas for pointing out CARGO_TARGET_DIR and target-dir configuration option.