CI: Replace ccache with Xcode compile cache

.github/actions/build-obs/action.yaml

@@ -99,7 +99,7 @@ runs:
         .github/scripts/Build-Windows.ps1 @BuildArgs
 
     - name: Create Summary 📊
-      if: contains(fromJSON('["Linux", "macOS"]'), runner.os)
+      if: runner.os == 'Linux'
       shell: zsh --no-rcs --errexit --pipefail {0}
       run: |
         : Create Summary 📊

.github/scripts/.Brewfile

@@ -1,4 +1,3 @@
-brew "ccache"
 brew "cmake"
 brew "git"
 brew "jq"

.github/scripts/.build.zsh

@@ -42,7 +42,7 @@ build() {
   local project_root=${SCRIPT_HOME:A:h:h}
 
   fpath=(${SCRIPT_HOME}/utils.zsh ${fpath})
-  autoload -Uz log_group log_error log_output check_${host_os} setup_ccache
+  autoload -Uz log_group log_error log_output check_${host_os}
 
   local -i debug=0
 
@@ -98,10 +98,11 @@ build() {
   set -- ${(@)args}
 
   check_${host_os}
-  setup_ccache
 
   if [[ ${host_os} == ubuntu ]] {
-    autoload -Uz setup_ubuntu && setup_ubuntu
+    autoload -Uz setup_ubuntu setup_ccache
+    setup_ccache
+    setup_ubuntu
   }
 
   local product_name='obs-studio'
@@ -116,7 +117,14 @@ build() {
 
   case ${target} {
     macos-*)
-      cmake_args+=(--preset 'macos-ci' -DCMAKE_OSX_ARCHITECTURES:STRING=${target##*-})
+      cmake_args+=(
+        --preset 'macos-ci'
+        -DCMAKE_OSX_ARCHITECTURES:STRING=${target##*-}
+      )
+
+      if (( debug )) {
+        cmake_args+=(CMAKE_XCODE_ATTRIBUTE_COMPILATION_CACHE_ENABLE_DIAGNOSTIC_REMARKS:STRING=YES)
+      }
 
       typeset -gx NSUnbufferedIO=YES
 

.github/workflows/build-project.yaml

@@ -80,8 +80,8 @@ jobs:
           : Set Up Environment 🔧
           if (( ${+RUNNER_DEBUG} )) setopt XTRACE
 
-          print '::group::Enable Xcode 16.4'
-          sudo xcode-select --switch /Applications/Xcode_16.4.app/Contents/Developer
+          print '::group::Enable Xcode 26.1'
+          sudo xcode-select --switch /Applications/Xcode_26.1.app/Contents/Developer
           print '::endgroup::'
 
           print '::group::Clean Homebrew Environment'
@@ -97,13 +97,19 @@ jobs:
           local -A arch_names=(x86_64 intel arm64 apple)
           print "cpuName=${arch_names[${{ matrix.target }}]}" >> $GITHUB_OUTPUT
 
+          local xcode_cas_path="${HOME}/Library/Developer/Xcode/DerivedData/CompilationCache.noindex"
+
+          if ! [[ -d ${xcode_cas_path} ]] mkdir -p ${xcode_cas_path}
+
+          print "xcodeCasPath=${xcode_cas_path}" >> $GITHUB_OUTPUT
+
       - uses: actions/cache/restore@v4
-        id: ccache-cache
+        id: xcode-cache
         with:
-          path: ${{ github.workspace }}/.ccache
-          key: ${{ runner.os }}-ccache-${{ matrix.target }}-${{ needs.check-event.outputs.config }}
+          path: ${{ steps.setup.outputs.xcodeCasPath }}
+          key: ${{ runner.os }}-xcode-${{ matrix.target }}-${{ needs.check-event.outputs.config }}
           restore-keys: |
-            ${{ runner.os }}-ccache-${{ matrix.target }}-
+            ${{ runner.os }}-xcode-${{ matrix.target }}-
 
       - name: Set Up Code Signing 🔑
         uses: ./.github/actions/setup-macos-codesigning
@@ -129,6 +135,7 @@ jobs:
           YOUTUBE_CLIENTID_HASH: ${{ secrets.YOUTUBE_CLIENTID_HASH }}
           YOUTUBE_SECRET: ${{ secrets.YOUTUBE_SECRET }}
           YOUTUBE_SECRET_HASH: ${{ secrets.YOUTUBE_SECRET_HASH }}
+          XCODE_CAS_PATH: ${{ steps.setup.outputs.xcodeCasPath }}
         with:
           target: ${{ matrix.target }}
           config: ${{ needs.check-event.outputs.config }}
@@ -163,10 +170,10 @@ jobs:
           path: ${{ github.workspace }}/build_macos/obs-studio-*-macos-${{ steps.setup.outputs.cpuName }}-dSYMs.tar.xz
 
       - uses: actions/cache/save@v4
-        if: github.event_name != 'pull_request' && steps.ccache-cache.outputs.cache-hit != 'true'
+        if: github.event_name != 'pull_request' && steps.xcode-cache.outputs.cache-hit != 'true'
         with:
-          path: ${{ github.workspace }}/.ccache
-          key: ${{ runner.os }}-ccache-${{ matrix.target }}-${{ needs.check-event.outputs.config }}
+          path: ${{ steps.setup.outputs.xcodeCasPath }}
+          key: ${{ runner.os }}-xcode-${{ matrix.target }}-${{ needs.check-event.outputs.config }}
 
   ubuntu-build:
     name: Ubuntu 🐧