buildid: get the buildid from your (running) library or executable

Get a &'static [u8] that is unique to the current binary.

println!("{:?}", buildid::build_id())

A build-id is a value which is guaranteed to change when any of the component objects of a binary change. A change in the build-id does not guarantee that the executable or it's components are actually different. Two distinct executables may have a different build-id if they were modified after linking (for example, by chrpath or similar).

A build-id is intended to be sufficient to identify the appropriate debug information to use for a given object, and is used for this purpose by gdb and other debuggers.

Both executables and shared objects contain build-ids. Using buildid::build_id() will return the build-id for the object that includes buildid (this crate). For example, if you write a shared object (shared library) using this crate, and provide a function which returns the build-id (by calling buildid::build_id() internally) in the shared objects's external API, that function call will return the build-id of the shared object/library (not the executable).

Windows, MacOS, and Linux are supported (and work automatically). Embedded and other platforms can be supported by enabling one of the optional features (see the docs for details). If you have another platform that needs support, send a PR!

By default, the buildid crate will pick the best build-id lookup function it can for your platform. If one is not available, it may fail to compile. If you have a custom build-id lookup mechanism you want to tell buildid about, enabling one of the features may help.

License

Licensed under Mozilla Public License 2.0

Contribution

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