ci: preserve Xcode compiler discovery with ccache launchers

Author: mrousavy

.github/workflows/build-ios-release.yml

@@ -38,7 +38,6 @@ jobs:
         run: |
           set -o pipefail
           xcodebuild \
-            CC=clang CPLUSPLUS=clang++ LD=clang LDPLUSPLUS=clang++ \
             -derivedDataPath build -UseModernBuildSystem=YES \
             -workspace NitroExample.xcworkspace \
             -scheme NitroExample \

.github/workflows/build-ios.yml

@@ -37,9 +37,8 @@ on:
       - '**/nitro.json'
 
 env:
-  USE_CCACHE: 1
   XCODE_VERSION: '26.5'
-  IOS_SIMULATOR_DESTINATION: 'platform=iOS Simulator,arch=arm64,name=iPhone 17 Pro'
+  IOS_SIMULATOR_DESTINATION: 'generic/platform=iOS Simulator'
 
 jobs:
   build:
@@ -58,7 +57,7 @@ jobs:
 
       - name: Set USE_FRAMEWORKS
         if: matrix.use_frameworks != ''
-        run: echo "USE_FRAMEWORKS=${{ matrix.use_frameworks }}" >> $GITHUB_ENV
+        run: echo "USE_FRAMEWORKS=${{ matrix.use_frameworks }}" >> "$GITHUB_ENV"
 
       - name: Install npm dependencies (bun)
         run: bun install
@@ -68,13 +67,14 @@ jobs:
         with:
           max-size: 1.5G
           key: ${{ runner.os }}-${{ runner.arch }}-xcode${{ env.XCODE_VERSION }}-${{ matrix.use_frameworks }}-ccache-example-ios
-          create-symlink: true
       - name: Setup ccache behavior
         run: |
-          echo "CCACHE_SLOPPINESS=clang_index_store,file_stat_matches,include_file_ctime,include_file_mtime,ivfsoverlay,pch_defines,modules,system_headers,time_macros" >> $GITHUB_ENV
-          echo "CCACHE_FILECLONE=true" >> $GITHUB_ENV
-          echo "CCACHE_DEPEND=true" >> $GITHUB_ENV
-          echo "CCACHE_INODECACHE=true" >> $GITHUB_ENV
+          {
+            echo "CCACHE_SLOPPINESS=clang_index_store,file_stat_matches,include_file_ctime,include_file_mtime,ivfsoverlay,pch_defines,modules,system_headers,time_macros"
+            echo "CCACHE_FILECLONE=true"
+            echo "CCACHE_DEPEND=true"
+            echo "CCACHE_INODECACHE=true"
+          } >> "$GITHUB_ENV"
 
       - name: Setup Ruby (bundle)
         uses: ruby/setup-ruby@v1
@@ -110,7 +110,8 @@ jobs:
         run: |
           set -o pipefail
           xcodebuild \
-            CC=clang CPLUSPLUS=clang++ LD=clang LDPLUSPLUS=clang++ \
+            C_COMPILER_LAUNCHER="$(command -v ccache)" \
+            CLANG_ENABLE_EXPLICIT_MODULES_WITH_COMPILER_LAUNCHER=YES \
             -derivedDataPath build -UseModernBuildSystem=YES \
             -workspace NitroExample.xcworkspace \
             -scheme NitroExample \
@@ -119,5 +120,6 @@ jobs:
             -destination '${{ env.IOS_SIMULATOR_DESTINATION }}' \
             -showBuildTimingSummary \
             ONLY_ACTIVE_ARCH=YES \
+            ARCHS=arm64 \
             build \
             CODE_SIGNING_ALLOWED=NO | xcbeautify --renderer github-actions

.github/workflows/harness-ios.yml

@@ -78,7 +78,6 @@ env:
   DEVICE_MODEL: ${{ github.event.inputs.device_model || 'iPhone 17 Pro' }}
   IOS_VERSION: ${{ github.event.inputs.ios_version || '26.5' }}
   XCODE_VERSION: ${{ github.event.inputs.xcode_version || '26.5' }}
-  USE_CCACHE: 1
   DEVELOPER_DIR: /Applications/Xcode_${{ github.event.inputs.xcode_version || '26.5' }}.app/Contents/Developer
   HARNESS_DEBUG: 1
 
@@ -111,13 +110,14 @@ jobs:
         with:
           max-size: 1.5G
           key: ${{ runner.os }}-${{ runner.arch }}-xcode${{ env.XCODE_VERSION }}-${{ matrix.sanitizer.name }}-ccache-example-ios
-          create-symlink: true
       - name: Setup ccache behavior
         run: |
-          echo "CCACHE_SLOPPINESS=clang_index_store,file_stat_matches,include_file_ctime,include_file_mtime,ivfsoverlay,pch_defines,modules,system_headers,time_macros" >> $GITHUB_ENV
-          echo "CCACHE_FILECLONE=true" >> $GITHUB_ENV
-          echo "CCACHE_DEPEND=true" >> $GITHUB_ENV
-          echo "CCACHE_INODECACHE=true" >> $GITHUB_ENV
+          {
+            echo "CCACHE_SLOPPINESS=clang_index_store,file_stat_matches,include_file_ctime,include_file_mtime,ivfsoverlay,pch_defines,modules,system_headers,time_macros"
+            echo "CCACHE_FILECLONE=true"
+            echo "CCACHE_DEPEND=true"
+            echo "CCACHE_INODECACHE=true"
+          } >> "$GITHUB_ENV"
 
       - name: Setup Ruby (bundle)
         uses: ruby/setup-ruby@v1
@@ -152,11 +152,10 @@ jobs:
         working-directory: apps/example/ios
         run: |
           set -o pipefail
-          CLANG="$(xcrun -f clang)"
-          CLANGXX="$(xcrun -f clang++)"
           SANITIZER_FLAGS="${{ matrix.sanitizer.xcodebuild_flags }}"
           xcodebuild \
-            CC="${CLANG}" CPLUSPLUS="${CLANGXX}" LD="${CLANG}" LDPLUSPLUS="${CLANGXX}" \
+            C_COMPILER_LAUNCHER="$(command -v ccache)" \
+            CLANG_ENABLE_EXPLICIT_MODULES_WITH_COMPILER_LAUNCHER=YES \
             -derivedDataPath build -UseModernBuildSystem=YES \
             -workspace NitroExample.xcworkspace \
             -scheme NitroExample \

apps/benchmark/ios/NitroBenchmark.xcodeproj/project.pbxproj

@@ -287,7 +287,6 @@
 				OTHER_LDFLAGS = (
 					"$(inherited)",
 					"-ObjC",
-					"-lc++",
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = com.margelo.nitrobenchmark;
 				PRODUCT_NAME = NitroBenchmark;
@@ -326,7 +325,6 @@
 				OTHER_LDFLAGS = (
 					"$(inherited)",
 					"-ObjC",
-					"-lc++",
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = com.margelo.nitrobenchmark;
 				PRODUCT_NAME = NitroBenchmark;
@@ -398,7 +396,6 @@
 				);
 				LIBRARY_SEARCH_PATHS = (
 					"\"$(SDKROOT)/usr/lib/swift\"",
-					"\"$(TOOLCHAIN_DIR)/usr/lib/swift/$(PLATFORM_NAME)\"",
 					"\"$(inherited)\"",
 				);
 				MTL_ENABLE_DEBUG_INFO = YES;
@@ -473,7 +470,6 @@
 				);
 				LIBRARY_SEARCH_PATHS = (
 					"\"$(SDKROOT)/usr/lib/swift\"",
-					"\"$(TOOLCHAIN_DIR)/usr/lib/swift/$(PLATFORM_NAME)\"",
 					"\"$(inherited)\"",
 				);
 				MTL_ENABLE_DEBUG_INFO = NO;

apps/example/package.json

@@ -15,7 +15,7 @@
     "pods": "cd ios && bundle exec pod install",
     "build:android": "cd android && ./gradlew assembleDebug --no-daemon --console=plain -PreactNativeArchitectures=arm64-v8a",
     "build:android-release": "cd android && ./gradlew assembleRelease --no-daemon",
-    "build:ios": "cd ios && xcodebuild -workspace NitroExample.xcworkspace -scheme NitroExample -configuration Debug -sdk iphonesimulator CC=clang CPLUSPLUS=clang++ LD=clang LDPLUSPLUS=clang++ GCC_OPTIMIZATION_LEVEL=0 GCC_PRECOMPILE_PREFIX_HEADER=YES ASSETCATALOG_COMPILER_OPTIMIZATION=time DEBUG_INFORMATION_FORMAT=dwarf COMPILER_INDEX_STORE_ENABLE=NO",
+    "build:ios": "cd ios && xcodebuild -workspace NitroExample.xcworkspace -scheme NitroExample -configuration Debug -sdk iphonesimulator GCC_OPTIMIZATION_LEVEL=0 GCC_PRECOMPILE_PREFIX_HEADER=YES ASSETCATALOG_COMPILER_OPTIMIZATION=time DEBUG_INFORMATION_FORMAT=dwarf COMPILER_INDEX_STORE_ENABLE=NO",
     "test:harness": "react-native-harness"
   },
   "dependencies": {

scripts/performance/build-ios.sh

@@ -7,7 +7,6 @@ bundle install
 bun pods
 cd ios
 xcodebuild \
-  CC=clang CPLUSPLUS=clang++ LD=clang LDPLUSPLUS=clang++ \
   -derivedDataPath build-benchmark \
   -workspace NitroBenchmark.xcworkspace \
   -scheme NitroBenchmark \