Simplify test-macos in CircleCI (facebook#765)

Summary:
Simplify the test-macos test and bring it in line with our tests on
other platforms. Also switch it to using the XCode build system so that
it uses parallel builds, and we get some additional coverage on a
different build system.

Pull Request resolved: facebook#765

Reviewed By: jpporto

Differential Revision: D37475877

Pulled By: neildhar

fbshipit-source-id: c7dd044270a775ebae7676ffe2cf03a9c4bd2847

.circleci/config.yml

@@ -283,32 +283,25 @@ jobs:
             - .
 
   test-macos:
-    # CheckedMalloc.Death fails in release mode, so build a debug version
-    # TODO: Switch to `release` and reuse `build_macosx` from previous job
-    <<: *apple_defaults
+    macos:
+      xcode: 13.4.1
     steps:
-      - checkout
+      - checkout:
+          path: hermes
       - run:
           name: Install dependencies
           command: |
-            brew install cmake ninja
-      - run:
-          name: Set up workspace
-          command: |
-            mkdir -p "$HERMES_WS_DIR"
-            ln -sf "$PWD" "$HERMES_WS_DIR/hermes"
+            brew install cmake
       - run:
           name: Run MacOS regression tests in debug mode
           command: |
-            cd "$HERMES_WS_DIR"
-            cmake -S hermes -B build
+            cmake -S hermes -B build -GXcode
             cmake --build ./build
             cmake --build ./build --target check-hermes
       - run:
           name: Build Apple Intl
           command: |
-            cd "$HERMES_WS_DIR"
-            cmake -S hermes -B build_intl -DHERMES_ENABLE_INTL=ON
+            cmake -S hermes -B build_intl -GXcode -DHERMES_ENABLE_INTL=ON
             cmake --build ./build_intl
 
   windows: