feat(ci): test mimic with multiple clang versions in LVH

Author: hack3ric

.github/workflows/push.yml

@@ -156,21 +156,34 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: Install dependencies
+      - name: Add LLVM apt repository
+        shell: bash
         run: |
+          wget https://apt.llvm.org/llvm.sh
+          chmod +x llvm.sh
+          for _clang_version in {15..21}; do
+            sudo ./llvm.sh $_clang_version
+          done
           sudo apt update
-          sudo apt install clang-15 llvm pahole \
+      - name: Install dependencies
+        shell: bash
+        run: |
+          sudo apt install clang-{15..21} pahole \
             linux-tools-common linux-tools-$(uname -r) linux-cloud-tools-$(uname -r) \
             libbpf-dev libffi-dev libelf-dev libxdp-dev
       - name: Build CLI
+        shell: bash
         run: |
-          export BPF_CC=clang-15
-          make build-cli -j ${{ matrix.flags.flags }}
+          for _clang_version in {15..21}; do
+            export BPF_CC=clang-$_clang_version 
+            make build-cli -j ${{ matrix.flags.flags }}
+            mv out/mimic out/mimic-clang-$_clang_version
+          done
       - name: Upload executable
         uses: actions/upload-artifact@v4
         with:
           name: mimic-${{ matrix.flags.name }}-${{ matrix.arch }}
-          path: out/mimic
+          path: out/mimic-clang-*
 
   test-lvh:
     name: Test LVH
@@ -303,8 +316,11 @@ jobs:
             uname -a
             cd /host
             insmod kmod/mimic.ko
-            chmod +x out/mimic
-            out/mimic run lo --check
+            chmod +x out/mimic-clang-*
+            for _mimic in mimic-clang-*; do
+              echo Checking $_mimic
+              $_mimic run lo --check
+            done
       - name: Extract kernel log
         if: always()
         uses: ./.github/actions/lvh-run