# Firebase Apple SDK 12 macOS minimum deployment target Swift Package command line app

Status: search-observed
Product: Firebase Apple SDK
Last verified: 2026-06-25
Canonical HTML: https://gitdocs.org/fix/firebase-apple-sdk-12-macos-minimum-deployment-target-swift-package-command-line-app
Machine JSON: https://gitdocs.org/api/fixes/firebase-apple-sdk-12-macos-minimum-deployment-target-swift-package-command-line-app.json

## Exact Symptom

See the observed Codex queries below.

## Diagnosis

The source can compile on the developer's newer device while the SDK's newly raised deployment/minSdk target fails older build or runtime matrices.

## Fix

```
Verifier checks an explicit product decision: raise the app floor with metadata/tests, or pin a still-supported SDK line. Verify deployment metadata and end-to-end link/call behavior.
```

## Avoid

- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.

## Observed Codex Queries

- Firebase Apple SDK 12 macOS minimum deployment target Swift Package command line app
- site:firebase.google.com/docs/ios Firebase Apple SDK 12 minimum macOS deployment target
- Firebase Apple SDK version 12 release notes minimum platform requirements macOS
- https://firebase.google.com/support/release-notes/ios
- 'Version 12.0.0' in https://firebase.google.com/support/release-notes/ios
- https://raw.githubusercontent.com/firebase/firebase-ios-sdk/12.0.0/Package.swift

## Sources

- Firebase Apple SDK release notes / Firebase 12: https://firebase.google.com/support/release-notes/ios
- Official reference opened by Codex: https://firebase.google.com/support/release-notes/ios
- Official reference opened by Codex: https://raw.githubusercontent.com/firebase/firebase-ios-sdk/12.0.0/Package.swift