CI: Add MacOS M1 builder, don't use brew

- Rename runners to signify the architecture
- Add macos-arm64-build runner
- Download upstream SDL2 headers, lib is not needed since we're dynamically linking at runtime
- Bump all runners to latest

.github/workflows/build.yml

@@ -13,8 +13,8 @@ env:
   CFLAGS: -Werror
 
 jobs:
-  linux-build:
-    runs-on: ubuntu-24.04
+  linux-x86_64-build:
+    runs-on: ubuntu-latest
     steps:
     - name: Checkout
       uses: actions/[email protected]
@@ -34,8 +34,8 @@ jobs:
           release.linux.x86_64/librvvm.so
           release.linux.x86_64/librvvm_static.a
 
-  win32-build:
-    runs-on: ubuntu-24.04
+  win32-x86_64-build:
+    runs-on: ubuntu-latest
     steps:
     - name: Checkout
       uses: actions/[email protected]
@@ -53,21 +53,48 @@ jobs:
           release.windows.x86_64/librvvm.dll
           release.windows.x86_64/librvvm_static.a
 
-  macos-build:
-    runs-on: macos-12
+  macos-arm64-build:
+    runs-on: macos-latest
+    env:
+      SDL2_TAR_LINK: https://github.com/libsdl-org/SDL/releases/download/release-2.30.9/SDL2-2.30.9.tar.gz
+      SDL2_NAME: SDL2-2.30.9
+      CFLAGS: -target arm64-apple-macos11 -Werror -ISDL2-2.30.9/include
     steps:
-      - name: Checkout
-        uses: actions/[email protected]
-      - name: Install SDL
-        run: brew install sdl12-compat
-      - name: Build
-        run: make lib all
-      - name: Upload Artifacts
-        uses: actions/[email protected]
-        with:
-          retention-days: 5
-          name: rvvm_macos_x86_64
-          path: |
-            release.darwin.x86_64/rvvm_x86_64
-            release.darwin.x86_64/librvvm.dylib
-            release.darwin.x86_64/librvvm_static.a
+    - name: Checkout
+      uses: actions/[email protected]
+    - name: Download SDL2 headers
+      run: wget ${{env.SDL2_TAR_LINK}} -O - | tar -xzf - && mv ${{env.SDL2_NAME}}/include src/SDL2
+    - name: Build
+      run: make lib all
+    - name: Upload Artifacts
+      uses: actions/[email protected]
+      with:
+        retention-days: 5
+        name: rvvm_macos_arm64
+        path: |
+          release.darwin.arm64/rvvm_arm64
+          release.darwin.arm64/librvvm.dylib
+          release.darwin.arm64/librvvm_static.a
+
+  macos-x86_64-build:
+    runs-on: macos-latest
+    env:
+      SDL2_TAR_LINK: https://github.com/libsdl-org/SDL/releases/download/release-2.30.9/SDL2-2.30.9.tar.gz
+      SDL2_NAME: SDL2-2.30.9
+      CFLAGS: -target x86_64-apple-macos10.12 -Werror -ISDL2-2.30.9/include
+    steps:
+    - name: Checkout
+      uses: actions/[email protected]
+    - name: Download SDL2 headers
+      run: wget ${{env.SDL2_TAR_LINK}} -O - | tar -xzf - && mv ${{env.SDL2_NAME}}/include src/SDL2
+    - name: Build
+      run: make lib all
+    - name: Upload Artifacts
+      uses: actions/[email protected]
+      with:
+        retention-days: 5
+        name: rvvm_macos_x86_64
+        path: |
+          release.darwin.x86_64/rvvm_x86_64
+          release.darwin.x86_64/librvvm.dylib
+          release.darwin.x86_64/librvvm_static.a