- a new build-guard job configures both Linux lines on one runner (configure only, disaggregation branches) and outputs identical, different or unknown with its runner image and compiler; it is continue-on-error at job level, so it never fails the run, and it takes MOBILEGL_CI_DISAGGREGATED from build-linux's branch expression, so a drifted branch list gives different
- build_fingerprint.py guard: one shared FetchContent directory (normalised as @DEPS@) so only the first configure fetches, a failed configure, or one killed with its process group after 10 minutes, retried once, and unknown for a configure that failed twice, any error or too little evidence; different is a warning annotation and unknown a notice, each with its first reasons; the toolchain is recorded, not compared; self-test cases for both sides thin, no libMobileGL.so link, a hung configure, the retry after a failure and after a timeout, the annotations, the shared directory and every verdict
- build-linux-split builds nothing only on identical, and the consumers take build-linux's artifacts only then; different and unknown keep both builds, the full split matrix, A/B and the split unit run, and no consumer can red on a disagreement
- build-linux drops its probe and runs the link ratchet on every disaggregation build as link-ratchet-primary; integration-split reds on it when it takes that build and prints both jobs' image and compiler
- build-linux exports its build type, and the split consumers refuse to reuse a build-linux that is not Release (split_reuse_build_type.sh, self-test in pipe-gates): a debug-logging re-run of failed jobs keeps the guard's Release verdict
- configure_build.sh passes extra arguments through to cmake
- scripts/ci/configure_build.sh holds build-linux's (primary) and build-linux-split's (split) configure lines, flag for flag as before
- scripts/ci/build_fingerprint.py compares two configured trees (cache, compile commands, link statements, CTest files, toolchain) with the build path normalised and the benchmarks left out; its guard configures a probe through the script and never counts thin evidence as equal
- pipe-gates runs its self-test; no job uses the guard yet
BZLZHH
swung0x48