Fix CMake module path and split CI configure per platform

Author: chrmod

.github/workflows/validate-dnr-rules.yml

@@ -12,6 +12,7 @@ on:
 jobs:
   build:
     strategy:
+      fail-fast: false
       matrix:
         include:
           - os: macos-latest
@@ -34,17 +35,23 @@ jobs:
         if: runner.os == 'macOS'
         run: brew install cmake ninja icu4c pkg-config
 
-      - name: Configure
+      - name: Configure (Linux)
+        if: runner.os == 'Linux'
         run: |
           cmake -B build -G Ninja \
             -DCMAKE_BUILD_TYPE=Release \
             -DPORT=GTK \
-            -DENABLE_WEBCORE=OFF \
-            -DENABLE_WEBKIT=OFF \
-            -DENABLE_TOOLS=OFF \
+            ghostery/validate-dnr-rules
+
+      - name: Configure (macOS)
+        if: runner.os == 'macOS'
+        run: |
+          cmake -B build -G Ninja \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DPORT=Mac \
             ghostery/validate-dnr-rules
         env:
-          CMAKE_PREFIX_PATH: ${{ runner.os == 'macOS' && '/opt/homebrew/opt/icu4c' || '' }}
+          CMAKE_PREFIX_PATH: /opt/homebrew/opt/icu4c
 
       - name: Build
         run: cmake --build build --target validate-dnr-rules

ghostery/validate-dnr-rules/CMakeLists.txt

@@ -1,17 +1,23 @@
 cmake_minimum_required(VERSION 3.20)
+
+set(WEBKIT_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/../..")
+
+# Set up WebKit's CMake module path before project() so platform detection works
+set(CMAKE_MODULE_PATH "${WEBKIT_ROOT}/Source/cmake" ${CMAKE_MODULE_PATH})
+list(APPEND CMAKE_MODULE_PATH "${WEBKIT_ROOT}/Source/cmake")
+
 project(validate-dnr-rules CXX C)
 
 set(CMAKE_CXX_STANDARD 23)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-set(WEBKIT_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/../..")
-
-# Use WebKit's CMake infrastructure for WTF
+# WebKit build system variables
 set(WTF_DIR "${WEBKIT_ROOT}/Source/WTF")
+set(WTF_SCRIPTS_DIR "${WTF_DIR}/wtf/Scripts")
 set(JavaScriptCore_SCRIPTS_DIR "${WEBKIT_ROOT}/Source/JavaScriptCore/Scripts")
 
-# Include WebKit's top-level CMake options
-include("${WEBKIT_ROOT}/Source/cmake/WebKitCommon.cmake" OPTIONAL)
+# Include WebKit's common cmake (handles platform detection, find_package, etc.)
+include(WebKitCommon)
 
 # Build WTF as a dependency
 if (NOT TARGET WTF)