The GNU Compiler Collection project, also known as GCC, introduced the Rust language compiler (gccrs) as an alternative to the primary compiler of the Rust project, rustc.
GCC’s approach aims to be a comprehensive compiler suite for various programming languages and has already built compilers for different languages within its suite, such as gccgo. The development of gccrs began in 2014 before Rust version 1.0 was released but was set aside for some time before other developers took over the project in 2019 and continued its development.
Representatives of GCC have stated that the goal of gccrs is to serve as an “alternative option” to rustc because they utilize different backend systems (rustc uses LLVM, similar to GCC). This allows for different development directions and is suitable for use in various scenarios. It still maintains compatibility with the same Rust language specifications and has received good support from the Rust programming community.
Source: Rust Foundation
TLDR: GCC introduced gccrs as an alternative Rust compiler, aiming to provide a different development approach while maintaining compatibility with the Rust language specifications. Supported by the Rust programming community.
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