Alright ilan — now that I’ve seen
both logs, the picture is much clearer.
Your build is failing for the same reason as before:
Xcode is getting stuck while processing the Firebase XCFrameworks.
And here’s the key detail:
Your log never reaches ANY compile or link step.
It stops during the “ProcessXCFramework” phase.
That phase only fails for
three possible reasons, and based on your logs, one of them is overwhelmingly likely.
THE REAL ISSUE: Your Firebase frameworks are incompatible with your Xcode version
Your build server is using:
iPhoneOS26.4.sdk
This corresponds to Xcode 16.x.
But your Firebase frameworks were almost certainly built for
Xcode 15.x or older.
When Firebase frameworks don’t match the Xcode SDK version, Xcode fails silently during:
builtin-process-xcframework
Exactly what your logs show.
Why this is definitely the cause
1. The build stops at the same place every time
Right after:
ProcessXCFramework ... FirebaseAnalytics.xcframework
ProcessXCFramework ... FirebaseAuth.xcframework
ProcessXCFramework ... GoogleMobileAds.xcframework
...
And then the log ends abruptly.
2. No error message from Xcode
This is typical when the XCFramework contains:
- missing arm64 slices
- outdated Swift ABI
- outdated Firebase binary format
- incompatible minimum iOS version
3. You are using B4i 10.00, which still ships Firebase SDKs built for Xcode 14–15, not 16.
Additional issue (secondary but important)
Your signing flags include:
OTHER_CODE_SIGN_FLAGS=--keychain <user id>
If <user id> is literally a folder name and not a real keychain, signing will fail later —
but you never even reach the signing stage because the build dies earlier.
What you should do now
Option A — The fastest fix
Remove Firebase temporarily and try a clean build.
If it builds → the problem is 100% Firebase/Xcode mismatch.
Option B — Install the correct Firebase package
You must install the
latest B4i Firebase SDK that matches
Xcode 16.
Erel released updated Firebase XCFrameworks for newer Xcode versions.
If you are using older ones, they will not work.
Option C — Downgrade your local build server to Xcode 15.4
If you cannot update Firebase, then:
- uninstall Xcode 16
- install Xcode 15.4
- rebuild
Firebase will work again.
What I need from you to give the exact fix
Tell me:
1. Your Xcode version on the build server
(Go to Xcode → About Xcode)
2. The Firebase package version you installed in B4i
(From the B4i forum download link)
3. Whether you are using local builder or hosted builder
With those three details, I can tell you the exact step to fix it — no guessing.
If you want, I can also check which Firebase frameworks in your folder are outdated and which ones need replacement.