diff --git a/cmake/external/onnxruntime_external_deps.cmake b/cmake/external/onnxruntime_external_deps.cmake
index 0c41945778..39e3fc89e7 100644
--- a/cmake/external/onnxruntime_external_deps.cmake
+++ b/cmake/external/onnxruntime_external_deps.cmake
@@ -289,6 +289,9 @@ namespace std { using ::getenv; }
       target_compile_options(flatc PRIVATE /FI${CMAKE_BINARY_DIR}/gdk_cstdlib_wrapper.h)
     endif()
   endif()
+else()
+  add_executable(flatc ALIAS flatbuffers::flatc)
+  add_library(flatbuffers::flatbuffers ALIAS flatbuffers::flatbuffers_shared)
 endif()
 
 if (onnxruntime_BUILD_UNIT_TESTS)