Speed-up bitbake with SSTATE, PRSERV and HashSERV
summary
Explains practical steps to cut Yocto/bitbake build time: use a shared SSTATE mirrors directory (local or NFS or simple web server) and pre-mirror the download dir, enable bbno-network to validate the mirror, switch autoref app recipes to static source refs (saves ~20–30 minutes), run a small PRSERV to assign monotonic PR numbers for RPM feeds, and deploy a HashSERV so identical binary outputs short‑circuit downstream rebuilds; note multiple SSTATE mirrors are allowed but only one hash equivalence server.
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