fix(ci): LLVM apt repo

Author: hack3ric

.github/workflows/push.yml

@@ -146,13 +146,6 @@ jobs:
       fail-fast: false
       matrix:
         arch: [amd64] # TODO: arm64 (bpftool not working)
-        flags:
-          - name: generic
-            flags: ""
-          - name: compat-6.1
-            flags: COMPAT_LINUX_6_1=1
-          - name: compat-6.6
-            flags: COMPAT_LINUX_6_6=1
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -161,7 +154,8 @@ jobs:
         run: |
           wget https://apt.llvm.org/llvm.sh
           chmod +x llvm.sh
-          for _clang_version in {15..21}; do
+          # Ubuntu 24.04 officially packages LLVM 15 and 16
+          for _clang_version in {17..21}; do
             sudo ./llvm.sh $_clang_version
           done
           sudo apt update
@@ -174,16 +168,20 @@ jobs:
       - name: Build CLI
         shell: bash
         run: |
-          for _clang_version in {15..21}; do
-            export BPF_CC=clang-$_clang_version 
-            make build-cli -j ${{ matrix.flags.flags }}
-            mv out/mimic out/mimic-clang-$_clang_version
+          flags_name=(generic compat-6.1 compat-6.6)
+          flags=("" "COMPAT_LINUX_6_1=1" "COMPAT_LINUX_6_6=1")
+          for _i in {0..2}; do
+            for _clang_version in {15..21}; do
+              export BPF_CC=clang-$_clang_version
+              make build-cli -j ${flags[$_i]}
+              mv out/mimic out/mimic-${flags_name[$_i]}-clang-$_clang_version
+            done
           done
       - name: Upload executable
         uses: actions/upload-artifact@v4
         with:
-          name: mimic-${{ matrix.flags.name }}-${{ matrix.arch }}
-          path: out/mimic-clang-*
+          name: mimic-${{ matrix.arch }}
+          path: out/mimic-*
 
   test-lvh:
     name: Test LVH
@@ -211,7 +209,7 @@ jobs:
       - name: Download artifact
         uses: actions/download-artifact@v4
         with:
-          name: mimic-${{ matrix.kernel.variant }}-${{ matrix.arch }}
+          name: mimic-${{ matrix.arch }}
           path: out
       - name: Install LVH CLI
         uses: ./.github/actions/lvh-install-cli
@@ -316,8 +314,9 @@ jobs:
             uname -a
             cd /host
             insmod kmod/mimic.ko
-            chmod +x out/mimic-clang-*
-            for _mimic in mimic-clang-*; do
+            cd out
+            chmod +x mimic-*
+            for _mimic in mimic-${{ matrix.kernel.variant }}-*; do
               echo Checking $_mimic
               $_mimic run lo --check
             done