Guard ccache and avoid lib name collisions

Co-authored-by: Valorith <76063792+Valorith@users.noreply.github.com>

.github/workflows/build.yaml

@@ -24,6 +24,13 @@ jobs:
         with:
           key: ${{ runner.os }}-ccache-${{ hashFiles('CMakeLists.txt', '.github/workflows/build.yaml') }}
 
+      - name: Ensure ccache installed
+        run: |
+          if ! command -v ccache >/dev/null 2>&1; then
+            apt-get update -qq
+            DEBIAN_FRONTEND=noninteractive apt-get install -y -qq ccache
+          fi
+
       - name: Mark workspace safe
         run: git config --global --add safe.directory "$GITHUB_WORKSPACE"
 

.github/workflows/release.yaml

@@ -71,6 +71,15 @@ jobs:
           zip_add() {
             zip -uj eqemu-server-linux-x64.zip "$1"
           }
+          zip_add_unique() {
+            local target_name
+            target_name="$(basename "$1")"
+            if unzip -Z1 eqemu-server-linux-x64.zip | grep -qx "$target_name"; then
+              echo "Skipping duplicate library: $target_name"
+              return 0
+            fi
+            zip_add "$1"
+          }
 
           # Add all executable files (excluding tests)
           for f in *; do
@@ -84,7 +93,7 @@ jobs:
           if [ "$bin_lib_count" -gt 0 ]; then
             find . -maxdepth 1 -type f \( -name "*.so" -o -name "*.so.[0-9]*" \) -print0 | \
               while IFS= read -r -d '' lib; do
-                zip_add "$lib"
+                zip_add_unique "$lib"
               done
           fi
 
@@ -93,7 +102,7 @@ jobs:
             if [ "$lib_count" -gt 0 ]; then
               find ../libs -type f \( -name "*.so" -o -name "*.so.[0-9]*" \) -print0 | \
                 while IFS= read -r -d '' lib; do
-                  zip_add "$lib"
+                  zip_add_unique "$lib"
                 done
             else
               echo "No shared libraries found in build/libs"