Support generation of working Xcode project for signature purposes on MacOS (#15303)

.github/workflows/macos.yml

@@ -30,7 +30,7 @@ on:
       - '.github/workflows/macos.yml'
 
 jobs:
-  build:
+  build-intel-macos:
     # use lowest possible macOS running on x86_64 supported by brew to support more users
     runs-on: macos-13
     steps:
@@ -70,3 +70,44 @@ jobs:
         with:
           name: luanti-macos
           path: ./build/macos/*.zip
+  build-arm-macos-xcode:
+    runs-on: macos-14
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install deps
+        run: |
+          source ./util/ci/common.sh
+          install_macos_deps
+          # brew jsoncpp do not include libjsoncpp.a, and if installed header conflict caused build failure
+          brew uninstall jsoncpp
+
+      - name: Build with Cmake
+        run: |
+          mkdir build
+          cd build
+          cmake .. \
+            -DCMAKE_OSX_DEPLOYMENT_TARGET=14 \
+            -DCMAKE_FIND_FRAMEWORK=LAST \
+            -DCMAKE_INSTALL_PREFIX=../build/macos/ \
+            -DRUN_IN_PLACE=FALSE -DENABLE_GETTEXT=TRUE \
+            -DENABLE_SYSTEM_JSONCPP=OFF
+          cmake --build . -j$(sysctl -n hw.logicalcpu)
+          make install
+
+      - name: Build and Archive with Xcode
+        run: |
+          mkdir build_xcode
+          cd build_xcode
+          ../util/ci/build_xcode.sh
+
+      - name: Tests
+        run: |
+          mkdir -p "${HOME}/Library/Application Support/minetest/games/"
+          ln -s "${PWD}/games/devtest" "${HOME}/Library/Application Support/minetest/games/"
+          ./build/macos/luanti.app/Contents/MacOS/luanti --run-unittests
+          ./build_xcode/luanti.xcarchive/Products/Applications/luanti.app/Contents/MacOS/luanti --run-unittests
+
+      - name: Diff Resources
+        run: |
+          diff -rd ./build/macos/luanti.app/Contents/Resources ./build_xcode/build/Release/luanti.app/Contents/Resources || exit 1
+          diff -rd ./build/macos/luanti.app/Contents/Resources ./build_xcode/luanti.xcarchive/Products/Applications/luanti.app/Contents/Resources || exit 1