Fix compile error on test cases depending on platform

[swiftwasm]

Fix compile error on test cases depending on platform

[kateinoigakukun]

@Vercantez Thank you for interest!
Almost same as other platforms, but there are some differences.

To prepare your development environment, please execute ./utils/webassembly/ci-linux.sh or ./utils/webassembly/ci-mac.sh. It installs some dependencies and builds this project.

The above ci-mac.sh script takes long time, so please use utils/webassembly/build-mac.sh instead from the second time.

utils/webassembly/build-mac.sh is just a wrapper of utils/build-script and you can pass some additional flags to build-mac.sh like

$ ./utils/webassembly/build-mac.sh --release -t --debug-swift-stdlib

When you want to run a test case, you can use utils/run-test to test it rapidly.

$ ./utils/run-test --build-dir ../build/Ninja-ReleaseAssert+stdlib-DebugAssert/ --target wasi-wasm32 test/stdlib/Result.swift

[kateinoigakukun]

Not failing cases are around 200 with -Onone!
https://gistcdn.githack.com/kateinoigakukun/bb91a7cebda629fbe8b06cd2697b86d7/raw/c08ac2c2aaccd5295e5e025fa867be576d86125f/index.html

[Vercantez]

Hi! I'm interested in contributing to this project. I'm gonna take a look at this since it's been marked as a good first issue

[Vercantez]

Is there an existing guide for building/testing the runtime for wasm? Or is it pretty much the same as x86_64?

[Vercantez]

Awesome! Thanks so much

[kateinoigakukun]

Now we are running stdlib tests on CI