Merge pull request #992 from darren/fix-PcmMsrDriver-build

Author: opcm

src/MacMSRDriver/PcmMsr/CMakeLists.txt

@@ -11,10 +11,24 @@ add_executable(
 
 set_target_properties(PcmMsrDriver PROPERTIES BUNDLE_EXTENSION kext MACOSX_BUNDLE_INFO_PLIST ${CMAKE_CURRENT_SOURCE_DIR}/PcmMsr-Info.plist)
 
+# For KEXT compilation on macOS, we must explicitly point to the Kernel frameworks within the SDK.
+if(APPLE)
+    # Find the active macOS SDK path
+    execute_process(
+        COMMAND xcrun --sdk macosx --show-sdk-path
+        OUTPUT_VARIABLE MACOSX_SDK_PATH
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+        RESULT_VARIABLE XCRUN_RESULT
+    )
+    if(NOT XCRUN_RESULT EQUAL 0 OR NOT MACOSX_SDK_PATH)
+        message(FATAL_ERROR "Failed to find macOS SDK path using xcrun")
+    endif()
+    message(STATUS "Using SDK for KEXT: ${MACOSX_SDK_PATH}")
+endif()
 
 target_include_directories(PcmMsrDriver PRIVATE
-        ${CMAKE_OSX_SYSROOT}/System/Library/Frameworks/Kernel.framework/PrivateHeaders
-        ${CMAKE_OSX_SYSROOT}/System/Library/Frameworks/Kernel.framework/Headers
+        "${MACOSX_SDK_PATH}/System/Library/Frameworks/Kernel.framework/PrivateHeaders"
+        "${MACOSX_SDK_PATH}/System/Library/Frameworks/Kernel.framework/Headers"
 )
 target_compile_definitions(PcmMsrDriver PRIVATE
         -DKERNEL