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This used to be necessary for a correct linker order, but ever since the introduction of symbols.o adding the symbols in question to symbols.o would work just as well. We do still add dependencies on the panic runtime to the local crate, but not for #![needs_panic_runtime] crates. This also removes the runtime-depends-on-needs-runtime test. inject_dependency_if used to emit this error, but with symbols.o it is no longer important that there is no dependency and in fact it may be nice to have panic_abort and panic_unwind directly depend on libstd in the future for calling std::process::abort().
This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
Why Rust?
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Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrated with other languages.
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Reliability: Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.
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Productivity: Comprehensive documentation, a compiler committed to providing great diagnostics, and advanced tooling including package manager and build tool (Cargo), auto-formatter (rustfmt), linter (Clippy) and editor support (rust-analyzer).
Quick Start
Read "Installation" from The Book.
Installing from Source
If you really want to install from source (though this is not recommended), see INSTALL.md.
Getting Help
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Contributing
See CONTRIBUTING.md.
License
Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.
See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.
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If you want to use these names or brands, please read the Rust language trademark policy.
Third-party logos may be subject to third-party copyrights and trademarks. See Licenses for details.