February 2026 summary focused on performance, reliability, and developer productivity. Delivered caching for Android native library linking/stripping to reuse outputs and speed up rebuilds, and hardened toolchain inheritance to ensure correct archiver behavior and symbol table generation. These changes improve build determinism, reduce local and CI rebuild times, and strengthen dependency tracking for static archives across buck2 and buck2-prelude.

July 2025: Build System Cleanup for folly delivered by removing explicit compiler flags (-fexceptions, -frtti) from build configurations since they are now enabled by default in the build environment. This simplification reduces configuration complexity, lowers maintenance costs, and improves cross-environment build consistency. The change is recorded in commit 5187d8c8806cd96b74954bd4268bd99c3fdbca41 (message: 'remove exception/rtti flags that are now enabled by default'). Overall impact includes reduced maintenance burden, faster contributor onboarding, and more reliable CI. Technologies/skills demonstrated include build-system hygiene, C/C++ project configuration, and alignment with environment defaults.