Compiler (RECC) CppCon 2024 September 19, 2024 Shivam Bairoliya Software Engineer© 2024 Bloomberg Finance L.P. All rights reserved. What is RECC? ● Remote Execution Caching Compiler (RECC) ○ Open source BuildBox-CASD ○ Distributed Server: BuildGrid© 2024 Bloomberg Finance L.P. All rights reserved. How RECC Works? ● Computes dependency tree with clang-scan-deps (or gcc -M or CC -xM) ● Creates comprehensive Small VMs with recc; outperforms non-recc builds on larger physical machines© 2024 Bloomberg Finance L.P. All rights reserved. Caching Action Cache Redis CAS S3 PostgreSQL recc (compiler launcher)