Removing IREE_COMMON_INCLUDE_DIRS and uses by LLVM/MLIR.
diff --git a/build_tools/cmake/flatbuffer_c_library.cmake b/build_tools/cmake/flatbuffer_c_library.cmake
index 8435980..23ade0c 100644
--- a/build_tools/cmake/flatbuffer_c_library.cmake
+++ b/build_tools/cmake/flatbuffer_c_library.cmake
@@ -126,7 +126,8 @@
   add_dependencies(${_NAME} ${_GEN_TARGET})
   target_include_directories(${_NAME} SYSTEM
     INTERFACE
-      "$<BUILD_INTERFACE:${IREE_COMMON_INCLUDE_DIRS}>"
+      "$<BUILD_INTERFACE:${IREE_SOURCE_DIR}>"
+      "$<BUILD_INTERFACE:${IREE_BINARY_DIR}>"
       ${CMAKE_CURRENT_BINARY_DIR}
     )
   target_link_libraries(${_NAME}