Revert "Support separate modules for static and dynamic exporting symbols for Windows"

[dschaefer2]

Reverts #8049

We are seeing link errors and missing symbols. Reverting to investigate.

[dschaefer2]

@swift-ci please test

[dschaefer2]

@swift-ci please test macOS

[dschaefer2]

@swift-ci please test macOS self hosted

[hjyamauchi]

@swift-ci please test macOS self hosted

[hjyamauchi]

Hi @dschaefer2 I think that the above self-hosted macos CI is broken:

https://ci.swift.org/job/swift-package-manager-with-xcode-self-hosted-PR-osx/4531/

     1 | @main
     2 | struct AsyncMain4 {
       |        `- note: add @available attribute to enclosing struct
     3 |   static func main() async {
       |               |      `- error: concurrency is only available in macOS 10.15.0 or newer
       |               `- note: add @available attribute to enclosing static method
     4 |     print(await getGreeting4())
     5 |   }

due to what appears to be an xcode/toolchain update on the CI runners:

Last passing run: https://ci.swift.org/job/swift-package-manager-with-xcode-self-hosted-PR-osx/4510/
swift-driver version: 1.87.3 Apple Swift version 5.9.2 (swiftlang-5.9.2.2.51 clang-1500.1.0.2.2)

Failing: https://ci.swift.org/job/swift-package-manager-with-xcode-self-hosted-PR-osx/4531/
Apple Swift version 6.1-dev (LLVM 5c0d283c37132bf, Swift b5af518638c9a16)

I cannot directly influence this. Can you look into this?

[dschaefer2]

Yes, we've been having issues with the MacOS self hosted job which we upgraded to use snapshot builds so we can start using swift-testing, but that was probably a bad idea, so we're working to revert it back to 6.0.2. Sorry about the delays.

[dschaefer2]

@swift-ci please test macOS self hosted

[dschaefer2]

OK, this is taking so long I ended up with a better solution. #8117

Closing.

[hjyamauchi]

@dschaefer2 I confirmed the fix in our CI. Thank you!