Runner with Xcode 15.2 is making changes to the Xcode project file in OTHER_LDFLAGS

[simon-assistiq]

[I changed my GitHub Actions workflow, which runs on macOS 13, to specify Xcode 15.2. When I build my project locally I don't get any changes in my Xcode project file. But when I run on GitHub Actions I always get the follow diffs in my project file.

-				OTHER_LDFLAGS = "$(inherited)";
+				OTHER_LDFLAGS = (
+					"$(inherited)",
+					"-Wl",
+					"-ld_classic",
+				);

These seem to be related to a known issue with Xcode 15: https://developer.apple.com/documentation/xcode-release-notes/xcode-15-release-notes — though I don't see anything there suggesting it would modify the project file automatically.

Binaries using symbols with a weak definition crash at runtime on iOS 14/macOS 12 or older. This impacts primarily C++ projects due to their extensive use of weak symbols. (114813650) (FB13097713)
Workaround: Bump the minimum deployment target to iOS 15, macOS 12, watchOS 8 or tvOS 15, or add -Wl,-ld_classic to the OTHER_LDFLAGS build setting.

So I bumped the minimum deployment to iOS 16 and ran again, but it's still making this change.

Of course, I don't want any local changes to my repo when running a build, and I check to make sure the git repo is clean before running the build with Fastlane.

I don't see anything specific about this in the Xcode 15.2 release notes

Does anyone know how to prevent this? Why is it only happening on GitHub Actions?](#9805)

[simon-assistiq]

facebook/react-native#39944

Apparently was just a bug with React Native that has been fixed in newer versions. I am running a supposedly new-enough version of React Native to not have the issue… But either way it doesn't look like a GitHub Actions issue, even if it seems to only be happening on the runners.