CD: some minor cleaning up.

Author: agarny

.github/workflows/cd.yml

@@ -14,7 +14,7 @@ jobs:
       BUILDCACHE_COMPRESS_FORMAT: ZSTD
       BUILDCACHE_DEBUG: -1
       BUILDCACHE_LOG_FILE: ""
-      DOXYGEN_VERSION: 1.9.3
+      DOXYGEN_VERSION: 1_9_3
     steps:
       - name: Install CMake and Ninja
         uses: lukka/get-cmake@latest
@@ -24,21 +24,21 @@ jobs:
           cache_key: doxygen
       - name: Build Doxygen
         run: |
-          export DOXYGEN_RELEASE=Release_${DOXYGEN_VERSION//./_}
+          export DOXYGEN_RELEASE=Release_${{ env.DOXYGEN_VERSION }}
           wget https://github.com/doxygen/doxygen/archive/refs/tags/${DOXYGEN_RELEASE}.tar.gz -O - | tar -xz
           cd doxygen-${DOXYGEN_RELEASE}
           mkdir build
           cd build
           cmake -G Ninja -DCMAKE_BUILD_TYPE=Release ..
           ninja
           cd bin
-          tar -cz doxygen -f ${{github.workspace}}/doxygen.tar.gz
-          ls -lh ${{github.workspace}}
+          tar -cz doxygen -f ${{ github.workspace }}/doxygen.tar.gz
+          ls -lh ${{ github.workspace }}
       - name: Upload Doxygen artifact
         uses: actions/upload-artifact@v4
         with:
           name: Doxygen
-          path: ${{github.workspace}}/doxygen.tar.gz
+          path: ${{ github.workspace }}/doxygen.tar.gz
   llvm-clang:
     name: LLVM+Clang tools
     runs-on: ubuntu-22.04
@@ -58,23 +58,23 @@ jobs:
           cache_key: llvmclang
       - name: Build LLVM+Clang
         run: |
-          wget https://github.com/llvm/llvm-project/archive/refs/tags/llvmorg-${LLVMCLANG_VERSION}.tar.gz -O - | tar -xz
-          cd llvm-project-llvmorg-${LLVMCLANG_VERSION}
+          wget https://github.com/llvm/llvm-project/archive/refs/tags/llvmorg-${{ env.LLVMCLANG_VERSION }}.tar.gz -O - | tar -xz
+          cd llvm-project-llvmorg-${{ env.LLVMCLANG_VERSION }}
           mkdir build
           cd build
           cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra" -DLLVM_TARGETS_TO_BUILD=X86 ../llvm
           ninja
           cd bin
           \rm clang
-          cp -p clang-${LLVMCLANG_MAJOR_VERSION} clang
-          tar -cz clang -f ${{github.workspace}}/clang.tar.gz
-          tar -cz clang-format -f ${{github.workspace}}/clang-format.tar.gz
-          tar -cz clang-tidy -f ${{github.workspace}}/clang-tidy.tar.gz
-          cd ../lib/clang/${LLVMCLANG_MAJOR_VERSION}
-          tar -cz . -f ${{github.workspace}}/clang-include.tar.gz
-          ls -lh ${{github.workspace}}
+          cp -p clang-${{ env.LLVMCLANG_MAJOR_VERSION }} clang
+          tar -cz clang -f ${{ github.workspace }}/clang.tar.gz
+          tar -cz clang-format -f ${{ github.workspace }}/clang-format.tar.gz
+          tar -cz clang-tidy -f ${{ github.workspace }}/clang-tidy.tar.gz
+          cd ../lib/clang/${{ env.LLVMCLANG_MAJOR_VERSION }}
+          tar -cz . -f ${{ github.workspace }}/clang-include.tar.gz
+          ls -lh ${{ github.workspace }}
       - name: Upload LLVM+Clang tools artifact
         uses: actions/upload-artifact@v4
         with:
           name: LLVM+Clang tools
-          path: ${{github.workspace}}/clang*.tar.gz
+          path: ${{ github.workspace }}/clang*.tar.gz