ci: frozen version of CMake for Linux aarch64 builds to avoid issues with third-party library CMake projects not compatible with CMake 4.0 (actions/runner-images#11926).

Signed-off-by: Marat Abrarov <[email protected]>

Author: mabrarov

.github/workflows/unit-tests.yaml

@@ -158,7 +158,9 @@ jobs:
             unit_test_option: "-DFLB_TESTS_INTERNAL=On"
             compiler_cc: gcc
             compiler_cxx: g++
-            cmake_version_max_exclusive: "4.0"
+            cmake_version: "3.31.6"
+            cmake_platform: "linux-aarch64"
+            cmake_home: "/opt/cmake"
 
     steps:
       - name: Checkout Fluent Bit code
@@ -167,9 +169,19 @@ jobs:
       - name: Setup environment
         run: |
           sudo apt-get update
-          sudo apt-get install -y gcc-9 g++-9 clang-12 flex bison libsystemd-dev gcovr libyaml-dev libbpf-dev linux-tools-common
-          sudo apt-get satisfy -y cmake "cmake (<< ${{ matrix.config.cmake_version_max_exclusive }})"
+          sudo apt-get install -y gcc-9 g++-9 clang-12 flex bison libsystemd-dev gcovr libyaml-dev libbpf-dev linux-tools-common curl tar gzip
           sudo ln -s /usr/bin/llvm-symbolizer-12 /usr/bin/llvm-symbolizer || true
+          sudo mkdir -p "${CMAKE_HOME}"
+          cmake_url="https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-${CMAKE_PLATFORM}.tar.gz"
+          cmake_dist="$(mktemp --suffix ".tar.gz")"
+          echo "Downloading CMake ${CMAKE_VERSION}: ${cmake_url} -> ${cmake_dist}"
+          curl -jksSL -o "${cmake_dist}" "${cmake_url}"
+          echo "Extracting CMake ${CMAKE_VERSION}: ${cmake_dist} -> ${CMAKE_HOME}"
+          sudo tar -xzf "${cmake_dist}" -C "${CMAKE_HOME}" --strip-components 1
+        env:
+          CMAKE_HOME: ${{ matrix.config.cmake_home }}
+          CMAKE_VERSION: ${{ matrix.config.cmake_version }}
+          CMAKE_PLATFORM: ${{ matrix.config.cmake_platform }}
 
       - name: Build and test with arm runners
         run: |
@@ -185,6 +197,10 @@ jobs:
             export FLB_OPT="${FLB_OPTION} ${GLOBAL_OPTION} ${FLB_UNIT_TEST_OPTION} ${FLB_OMIT_OPTION}"
 
             echo "CC = ${{ matrix.config.compiler_cc }}, CXX = ${{ matrix.config.compiler_cxx }}, FLB_OPT = $FLB_OPT"
+            
+            if [[ -n "${CMAKE_HOME}" ]]; then
+              export PATH="${CMAKE_HOME}/bin:${PATH}"
+            fi
 
             cmake ${FLB_OPT}  ../
             make -j $nparallel
@@ -194,6 +210,7 @@ jobs:
           CC: ${{ matrix.config.compiler_cc }}
           CXX: ${{ matrix.config.compiler_cxx }}
           CALYPTIA_FLEET_TOKEN: ${{ secrets.CALYPTIA_FLEET_TOKEN }}
+          CMAKE_HOME: ${{ matrix.config.cmake_home }}
 
   run-qemu-ubuntu-unit-tests:
     # We chain this after Linux one as there are CPU time costs for QEMU emulation