env-safe.yml

# This workflow demonstrates how to use the `setup-wasi-sdk` action alongside another toolchain.
# By default, the `add-to-path` input is set to `true`, overriding the runner `PATH`, `CC`, and
# other variables. Here we demonstrate using the action outputs along with a step ID to access the
# installed tools, without modifying the environment.

name: environment-safe

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main
  workflow_dispatch:
  merge_group:

permissions: {}

jobs:
  env:
    name: Example
    runs-on: ubuntu-latest
    permissions:
      contents: read

    steps:
      - name: Checkout
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false

      - uses: ./
        id: wasi-sdk
        with:
          add-to-path: 'false'

      - name: Check output variables
        shell: bash
        env:
          CLANG_PATH: ${{ steps.wasi-sdk.outputs.clang-path }}
          SDK_PATH: ${{ steps.wasi-sdk.outputs.wasi-sdk-path }}
          SDK_VERSION: ${{ steps.wasi-sdk.outputs.wasi-sdk-version }}
          SYSROOT_PATH: ${{ steps.wasi-sdk.outputs.sysroot-path }}
        run: |
          echo "wasi-sdk-path: $SDK_PATH"
          echo "wasi-sdk-version: $SDK_VERSION"
          echo "clang-path: $CLANG_PATH"
          echo "sysroot-path: $SYSROOT_PATH"

      - name: Check Clang version
        env:
          CLANG_PATH: ${{ steps.wasi-sdk.outputs.clang-path }}
        run: '"$CLANG_PATH" --version'

      - name: Create test C program
        shell: bash
        run: |
          cat > hello.c << 'EOF'
          #include <stdio.h>

          int main() {
              printf("Hello, WebAssembly!\n");
              return 0;
          }
          EOF

      # Note how we must also set the sysroot path manually which would otherwise be set up for us
      # in the `CC` environment variable.
      - name: Build WebAssembly module
        shell: bash
        env:
          CLANG_PATH: ${{ steps.wasi-sdk.outputs.clang-path }}
          SYSROOT_PATH: ${{ steps.wasi-sdk.outputs.sysroot-path }}
        run: |
          "$CLANG_PATH" \
              --sysroot="$SYSROOT_PATH" \
              hello.c -o hello.wasm
          ls -la hello.wasm
          file hello.wasm