fix(ci): pin linux compiler env for xlings

Author: Sunrisepeak

.github/workflows/ci.yml

@@ -23,6 +23,14 @@ jobs:
       - name: Install dependencies
         run: xlings install -g
 
+      - name: Configure Linux toolchain env
+        run: |
+          echo "$HOME/.xlings/subos/default/bin" >> "$GITHUB_PATH"
+          echo "CC=$HOME/.xlings/subos/default/bin/gcc" >> "$GITHUB_ENV"
+          echo "CXX=$HOME/.xlings/subos/default/bin/g++" >> "$GITHUB_ENV"
+          echo "AR=$HOME/.xlings/subos/default/bin/ar" >> "$GITHUB_ENV"
+          echo "RANLIB=$HOME/.xlings/subos/default/bin/ranlib" >> "$GITHUB_ENV"
+
       - name: Build
         run: xmake build -a -y -vvD