manually config ccache locally (#8351)

This avoids uploading the ccache to github and take the cache storage.

---------

Co-authored-by: slangbot <ellieh+slangbot@nvidia.com>
Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

1 files changed, 35 insertions, 13 deletions

diff --git a/.github/actions/common-setup/action.yml b/.github/actions/common-setup/action.yml
index bf6174c75..f2e9567dd 100644
--- a/.github/actions/common-setup/action.yml
+++ b/.github/actions/common-setup/action.yml
@@ -118,17 +118,39 @@ runs:
           linux*) echo "${{github.workspace}}/external/slang-binaries/spirv-tools/$(uname -m)-linux/bin" >> "$GITHUB_PATH";;
         esac
 
-      # Setup ccache for self-hosted runners (Windows only for now)
-    - name: Setup ccache
+      # Setup ccache for local compilation speedup (Windows self-hosted only)
+      # Only use ccache if already installed - don't attempt installation
+    - name: Setup ccache (if available, local only, no GitHub uploads)
       if: ${{ inputs.os == 'windows' && runner.environment == 'self-hosted' }}
-      uses: Chocobo1/setup-ccache-action@v1
-      with:
-        update_packager_index: false
-        install_ccache: true
-        prepend_symlinks_to_path: true
-        windows_compile_environment: msvc
-        ccache_options: |
-          max_size=2G
-          compression=true
-          compression_level=6
-          sloppiness=pch_defines,time_macros
+      shell: bash
+      run: |
+        # Check if ccache is available
+        if ! command -v ccache &> /dev/null; then
+          echo "⚠️  ccache not found on this self-hosted runner"
+          echo "   Skipping ccache setup to avoid permission issues"
+          echo "   Build will proceed without ccache acceleration"
+          echo "   To enable ccache: manually install it on the runner with admin rights"
+          exit 0
+        fi
+
+        echo "✅ ccache found on self-hosted runner - setting up local caching"
+
+        # Set ccache directory (local temp directory)
+        ccache_dir="${{ github.workspace }}/.ccache-local"
+        mkdir -p "$ccache_dir"
+        echo "CCACHE_DIR=$ccache_dir" >> $GITHUB_ENV
+
+        # Configure ccache settings for local use only
+        ccache --set-config=max_size=2G
+        ccache --set-config=compression=true
+        ccache --set-config=compression_level=6
+        ccache --set-config=sloppiness=pch_defines,time_macros
+
+        # Enable ccache for CMake (set environment variables)
+        echo "ccache_symlinks_path=ccache" >> $GITHUB_ENV
+
+        # Show initial stats
+        echo "ccache configuration:"
+        ccache --show-config || echo "Could not show ccache config"
+        ccache --zero-stats || echo "Could not zero ccache stats"
+        ccache --show-stats || echo "Could not show ccache stats"