CI: Include libc_so in the build check

.github/workflows/main.yml

@@ -23,11 +23,13 @@ jobs:
           - os: ubuntu-latest
             clang_version: 16.0.0
             llvm_asset_suffix: x86_64-linux-gnu-ubuntu-18.04
+            enable_pic: true
           - os: macos-latest
             clang_version: 15.0.7
             llvm_asset_suffix: x86_64-apple-darwin21.0
           - os: windows-latest
             clang_version: 16.0.0
+            enable_pic: true
     steps:
     - uses: actions/[email protected]
       with:
@@ -88,12 +90,18 @@ jobs:
         echo "BUILD_LIBSETJMP=no" >> $GITHUB_ENV
       if: matrix.clang_version == '10.0.0'
 
+    - name: Enable PIC build for new LLVM
+      shell: bash
+      run: |
+        echo "MAKE_TARGETS=default libc_so" >> $GITHUB_ENV
+      if: matrix.enable_pic
+
     - name: Build libc
       shell: bash
       run: |
-        make -j4 TARGET_TRIPLE=wasm32-wasi
-        make -j4 TARGET_TRIPLE=wasm32-wasip1
-        make -j4 TARGET_TRIPLE=wasm32-wasip2 WASI_SNAPSHOT=p2
+        make -j4 TARGET_TRIPLE=wasm32-wasi $MAKE_TARGETS
+        make -j4 TARGET_TRIPLE=wasm32-wasip1 $MAKE_TARGETS
+        make -j4 TARGET_TRIPLE=wasm32-wasip2 $MAKE_TARGETS
 
     - name: Build libc + threads
       # Only build the thread-capable wasi-libc in the latest supported Clang