# AI Modification Log: Build Result Detection

Date: 2026-06-29

## Change

- Updated X/Y/Z workflow build steps to use `set -o pipefail` before `make | tee`.
- Captured the build status immediately after the primary build or fallback build.
- Appended fallback build output to `build_log.log`.
- Moved the Z workflow mosdns `CGO_ENABLED=1` fix before `make` runs.

## Reason

Without `pipefail`, `make | tee` could report success when `make` failed. In the Z workflow, the mosdns fix ran after `make`, so it was applied too late and the final `$?` reflected `sed` instead of the build result.