correct script path for arm vs amd cmake install

Author: franadr

.github/workflows/linux.yml

@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         target: ["release","debug"]
-        os: ["ubuntu-24.04","ubuntu-24.04-arm"]
+        os: ["ubuntu-22.04","ubuntu-22.04-arm"]
 
     runs-on: ${{matrix.os}}
     steps:
@@ -38,9 +38,11 @@ jobs:
         set +xe
         which cmake &> /dev/null 
         if [ $? -ne 0 ]; then
-          wget https://github.com/Kitware/CMake/releases/download/v3.31.5/cmake-3.31.5-linux-x86_64.sh
-          chmod +x cmake-3.31.5-linux-x86_64.sh
-          sudo ./cmake-3.31.5-linux-x86_64.sh --skip-license --prefix=/usr/local
+          arch=$([ $(uname -m) = "arm64" ] && echo "aarch64" || echo "x86_64")
+          cmake_script="cmake-3.31.5-linux-$arch.sh"
+          wget "https://github.com/Kitware/CMake/releases/download/v3.31.5/$cmake_script"
+          chmod +x $cmake_script
+          sudo ./$cmake_script --skip-license --prefix=/usr/local
         fi
         CMAKE_VERSION=$(cmake --version | awk '/version/ {print $3}')
         echo "Using cmake: ${CMAKE_VERSION}"