Mads Odgaard 603b00bd51 Add Foundation linkage test and last missing pieces (#1997) ...

Adds linkage test to make sure we don't regress importing Foundation.

Also, the `.copy` resources in SwiftPM imports full Foundation, so we
guard that behind Darwin.

Also fixes the last remaining Foundation part, which was
`String.contains`.

## Result
`swift-protobuf` can now be built with `FoundationEssentials` only.

2026-03-10 08:35:52 -04:00

..

InternalImportsByDefault

Drop support for Swift 5.10 (#1913)

2026-02-09 12:32:13 -05:00

LinkageTest

Add Foundation linkage test and last missing pieces (#1997)

2026-03-10 08:35:52 -04:00

MultiModule

Drop support for Swift 5.10 (#1913)

2026-02-09 12:32:13 -05:00