diff --git a/llvm/cmake/modules/AddLLVM.cmake b/llvm/cmake/modules/AddLLVM.cmake
--- a/llvm/cmake/modules/AddLLVM.cmake
+++ b/llvm/cmake/modules/AddLLVM.cmake
@@ -128,8 +128,14 @@
       VERBATIM
       COMMENT "Creating export file for ${target_name}")
     set(export_file_linker_flag "${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
-    if(MSVC)
-      set(export_file_linker_flag "/DEF:\"${export_file_linker_flag}\"")
+    if(WIN32)
+      if(MINGW)
+        set(export_file_linker_flag "-Wl,\"${export_file_linker_flag}\"")
+      elseif(MSVC)
+        set(export_file_linker_flag "/DEF:\"${export_file_linker_flag}\"")
+      else()
+        set(export_file_linker_flag "-Wl,/DEF:\"${export_file_linker_flag}\"")
+      endif()
     endif()
     set_property(TARGET ${target_name} APPEND_STRING PROPERTY
                  LINK_FLAGS " ${export_file_linker_flag}")