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Obtain a Uuid uniquely representing the build of the current binary.

This is intended to be used to check that different processes are indeed invocations of identically laid out binaries.

As such:

• It is guaranteed to be identical within multiple invocations of the same binary.
• It is guaranteed to be different across binaries with different code or data segments or layout.
• Equality is unspecified if the binaries have identical code and data segments and layout but differ immaterially (e.g. if a timestamp is included in the binary at compile time).

let local_build_id = build_id::get();
if local_build_id == remote_build_id {
	println!("We're running the same binary as remote!");
} else {
	println!("We're running a different binary to remote");
}

This looks first for linker-inserted build ID / binary UUIDs (i.e. .note.gnu.build-id on Linux; LC_UUID in Mach-O; etc), falling back to hashing the whole binary.

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE.txt or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT.txt or http://opensource.org/licenses/MIT)

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.