April 2025 monthly summary for rust-lang/gcc focusing on RISC-V configuration improvements and test coverage. Key achievements include the implementation of a RISC-V extension implication rule where Zca implies the C extension, along with updates to configuration logic and new cross-arch tests. This work enhances compatibility of RISC-V architecture strings and reduces misconfigurations in RV32 and RV64 configurations. Impact: More robust and predictable RISC-V support in the GCC-backed Rust toolchain, lowering manual configuration effort and increasing build reliability for users targeting RV32 and RV64. Technologies/skills demonstrated: C/C++ changes in GCC configuration, test-driven development, cross-architecture validation, patch-based workflow, PR119122.