Testing - Add a new compilation on Clang without PCH #540

Updated a main workflow to validate the header and more precise warnings.
No PCH helps to validate missed headers.
Fixed PCH issue for mac os
Extend the parameters for occt build action.

.github/workflows/build-and-test-multiplatform.yml

@@ -122,6 +122,25 @@ jobs:
         compiler: clang
         artifact-name: install-linux-clang-x64
 
+  prepare-and-build-macos-clang-no-pch:
+    name: Prepare and Build on macOS with Clang (No PCH)
+    runs-on: macos-15
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4.1.7
+
+    - name: Build OCCT
+      uses: ./.github/actions/build-occt
+      with:
+        platform: macos
+        compiler: clang
+        artifact-name: install-macos-clang-no-pch
+        build-use-pch: 'false'
+        build-opt-profile: 'Default'
+        additional-cmake-flags: '-D CMAKE_CXX_FLAGS="-Werror -Wall -Wextra" -D CMAKE_C_FLAGS="-Werror -Wall -Wextra"'
+        cmake-build-type: 'Debug'
+
   prepare-and-build-linux-gcc-x64:
     name: Prepare and Build on Ubuntu with GCC (x64)
     runs-on: ubuntu-24.04