Update to wasi-sdk-27 (#1349)

* Update to wasi-sdk-27

This enables the ability to compile for wasm32-wasip2 and generate
components using async features.

* Make objects resilient to wasm feature changes over time

Author: alexcrichton

.github/actions/install-wasi-sdk/action.yml

@@ -5,18 +5,18 @@ runs:
   using: composite
   steps:
     - run: |
-        curl https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-25/wasi-sdk-25.0-x86_64-linux.tar.gz -L | tar xzvf -
-        echo "WASI_SDK_PATH=`pwd`/wasi-sdk-25.0-x86_64-linux" >> $GITHUB_ENV
+        curl https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-27/wasi-sdk-27.0-x86_64-linux.tar.gz -L | tar xzvf -
+        echo "WASI_SDK_PATH=`pwd`/wasi-sdk-27.0-x86_64-linux" >> $GITHUB_ENV
       if: runner.os == 'Linux'
       shell: bash
     - run: |
-        curl https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-25/wasi-sdk-25.0-x86_64-macos.tar.gz -L | tar xzvf -
-        echo "WASI_SDK_PATH=`pwd`/wasi-sdk-25.0-x86_64-macos" >> $GITHUB_ENV
+        curl https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-27/wasi-sdk-27.0-x86_64-macos.tar.gz -L | tar xzvf -
+        echo "WASI_SDK_PATH=`pwd`/wasi-sdk-27.0-x86_64-macos" >> $GITHUB_ENV
       if: runner.os == 'macOS'
       shell: bash
     - run: |
-        curl https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-25/wasi-sdk-25.0-x86_64-windows.tar.gz -L | tar xzvf -
-        echo "WASI_SDK_PATH=`pwd`/wasi-sdk-25.0-x86_64-windows" >> $GITHUB_ENV
+        curl https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-27/wasi-sdk-27.0-x86_64-windows.tar.gz -L | tar xzvf -
+        echo "WASI_SDK_PATH=`pwd`/wasi-sdk-27.0-x86_64-windows" >> $GITHUB_ENV
       if: runner.os == 'Windows'
       shell: bash
     - name: Setup `wasm-tools`

.github/workflows/main.yml

@@ -136,7 +136,6 @@ jobs:
           --artifacts target/artifacts \
           --rust-wit-bindgen-path ./crates/guest-rust \
           --rust-target wasm32-wasip1 \
-          --c-target wasm32-wasip1 \
           --runner "$WASMTIME -W component-model-async -Sp3"
 
   test_unit:

ci/rebuild-libwit-bindgen-cabi.sh

@@ -91,7 +91,7 @@ EOF
 build() {
   file=$1
   $WASI_SDK_PATH/bin/clang crates/guest-rust/rt/src/$1.c \
-    -O -c -o crates/guest-rust/rt/src/$1.o
+    -O -c -o crates/guest-rust/rt/src/$1.o -mcpu=mvp
   # Remove the `producers` section. This appears to differ whether the host for
   # clang is either macOS or Linux. Not needed here anyway, so discard it to help
   # either host produce the same object.