diff --git a/cmake/subdir.cmake b/cmake/subdir.cmake
index 2cab85fec..4c5b67dc5 100644
--- a/cmake/subdir.cmake
+++ b/cmake/subdir.cmake
@@ -22,18 +22,13 @@ endif()
 foreach(child ${children})
   get_filename_component(subdir_name ${child} NAME)
   string(TOUPPER ${subdir_name} subdir_name)
-  message(STATUS "BUILD_${subdir_name}: ${BUILD_${subdir_name}}")
-endforeach()
-
-foreach(child ${children})
-  get_filename_component(subdir_name ${child} NAME)
-  string(TOUPPER ${subdir_name} subdir_name)
-  if((${subdir_name} STREQUAL "STRUCT_PB") AND (CMAKE_CXX_COMPILER_ID STREQUAL "MCVC"))
+  if((${subdir_name} STREQUAL "STRUCT_PACK" OR ${subdir_name} STREQUAL "STRUCT_PB") AND (CMAKE_CXX_COMPILER_ID STREQUAL "Clang"))
     message(STATUS "skip ${subdir_name}")
     continue()
   endif()
 
   if (BUILD_${subdir_name})
+    message(STATUS "BUILD_${subdir_name}: ${BUILD_${subdir_name}}")
     if(BUILD_EXAMPLES AND EXISTS ${child}/examples)
       add_subdirectory(${child}/examples)
     endif()