build: Switch to GCC on MacOS (#552)

* build: Experimentally switch to gcc on macOS

* build: Corrected gcc paths

* build: Enable objective c support on macOS

* build: Enable ObjC and ObjC++ on macOS

* build: Add ObjC and ObjC++ flags

* build: Try compiling objc with clang

* build: Remove invalid flags again

* fix: Let's not include objc headers in C++ code

* sys: Move macos utils code to its own file

* fix: Missing unistd include on mac

* sys: Removed loader script stuff since it's currently unused and broken

* fix: Missing include

* fix: Another missing include

* fix: CFURLCreateWithBytes wants a pointer to mutable data

* fix: Try disabling name mangling of ObjC functions

* sys: Move macos utils declarations to its own header file

* fix: C Linkage

* fix: Move objc function prototypes to C++ headers

* fix: More missing includes

* fix: Warning error

* sys: Call ObjC with C ABI instead of trying to use C++

* build: Update libraries

* sys: Fixed build errors

* sys: No const correctness I guess

* sys: Fixed prototypes

* sys: This is C now

* sys: More nullptr -> NULL

* sys: Fix crash on exit

* sys: Try using proper std concepts instead of custom ones

* sys: Replaced another hex::is_signed

* build: Upgrade to gcc 12 and MacOS Monterey

* build: Fixed MacOS runner name

* build: Cache correct ccache folder on macOS

.github/workflows/build.yml

@@ -106,8 +106,8 @@ jobs:
 
   # MacOS build
   macos:
-    runs-on: macos-11.0
-    name: 🍎 macOS 11.0
+    runs-on: macos-12
+    name: 🍎 macOS 12.0
     steps:
 
     - name: 🧰 Checkout
@@ -122,8 +122,7 @@ jobs:
     - name: 📜 Restore cache
       uses: actions/cache@v3
       with:
-        path: |
-          ~/.ccache
+        path: ~/Library/Caches/ccache
         key: ${{ runner.os }}-${{ secrets.CACHE_VERSION }}-build-${{ hashFiles('**/CMakeLists.txt') }}
         restore-keys: ${{ runner.os }}-${{ secrets.CACHE_VERSION }}-build-${{ hashFiles('**/CMakeLists.txt') }}
 
@@ -131,16 +130,20 @@ jobs:
       run: |
         mkdir -p build
         cd build
-        CC=$(brew --prefix llvm)/bin/clang \
-        CXX=$(brew --prefix llvm)/bin/clang++ \
+        CC=$(brew --prefix gcc@12)/bin/gcc-12     \
+        CXX=$(brew --prefix gcc@12)/bin/g++-12    \
+        OBJC=$(brew --prefix llvm)/bin/clang      \
+        OBJCXX=$(brew --prefix llvm)/bin/clang++  \
         PKG_CONFIG_PATH="$(brew --prefix openssl)/lib/pkgconfig":"$(brew --prefix)/lib/pkgconfig" \
-        MACOSX_DEPLOYMENT_TARGET="10.15" \
-        cmake                                   \
-          -DCMAKE_BUILD_TYPE=$BUILD_TYPE        \
-          -DCREATE_BUNDLE=ON                    \
-          -DCREATE_PACKAGE=ON                   \
-          -DCMAKE_C_COMPILER_LAUNCHER=ccache    \
-          -DCMAKE_CXX_COMPILER_LAUNCHER=ccache  \
+        MACOSX_DEPLOYMENT_TARGET="10.15"          \
+        cmake                                     \
+          -DCMAKE_BUILD_TYPE=$BUILD_TYPE          \
+          -DCREATE_BUNDLE=ON                      \
+          -DCREATE_PACKAGE=ON                     \
+          -DCMAKE_C_COMPILER_LAUNCHER=ccache      \
+          -DCMAKE_CXX_COMPILER_LAUNCHER=ccache    \
+          -DCMAKE_OBJC_COMPILER_LAUNCHER=ccache   \
+          -DCMAKE_OBJCXX_COMPILER_LAUNCHER=ccache \
           ..
         make -j4 package
 
@@ -196,7 +199,7 @@ jobs:
         run: |
           mkdir -p build
           cd build
-          CC=gcc-11 CXX=g++-11 cmake                  \
+          CC=gcc-12 CXX=g++-12 cmake                  \
             -DCMAKE_BUILD_TYPE=$BUILD_TYPE            \
             -DCMAKE_INSTALL_PREFIX="/usr" 	      \
             -DCMAKE_C_COMPILER_LAUNCHER=ccache        \