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/tests.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   tests:
     name: 🧪 Unit Tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       actions: read
       contents: read
@@ -38,7 +38,7 @@ jobs:
       run: |
         mkdir -p build
         cd build
-        CC=gcc-11 CXX=g++-11 cmake              \
+        CC=gcc-12 CXX=g++-12 cmake              \
           -DCMAKE_BUILD_TYPE=$BUILD_TYPE        \
           -DCMAKE_INSTALL_PREFIX="$PWD/install" \
           -DCMAKE_C_COMPILER_LAUNCHER=ccache    \