Index: otp/erts/emulator/Makefile.in
===================================================================
--- otp.orig/erts/emulator/Makefile.in	2013-05-11 13:49:51.931058700 +0300
+++ otp/erts/emulator/Makefile.in	2013-05-11 13:51:26.774530000 +0300
@@ -193,7 +193,7 @@
 else
 EMU_CC  = @EMU_CC@
 endif
-TYPE_FLAGS += -DSTATIC_ERLANG_DRIVER
+TYPE_FLAGS += -DSTATIC_ERLANG_DRIVER -DBUILDING_DLL
 else
 EMU_CC  = @EMU_CC@
 endif
Index: otp/erts/emulator/beam/global.h
===================================================================
--- otp.orig/erts/emulator/beam/global.h	2013-05-11 13:49:58.617755000 +0300
+++ otp/erts/emulator/beam/global.h	2013-05-11 13:50:32.289108900 +0300
@@ -671,7 +671,7 @@
 extern int erts_compat_rel;
 extern int erts_use_sender_punish;
 void erts_short_init(void);
-void erl_start(int, char**);
+void OTP_Export_Flags erl_start(int, char**);
 void erts_usage(void);
 Eterm erts_preloaded(Process* p);
 /* erl_md5.c */
Index: otp/erts/emulator/sys/win32/erl_win_sys.h
===================================================================
--- otp.orig/erts/emulator/sys/win32/erl_win_sys.h	2013-05-11 13:50:24.117077000 +0300
+++ otp/erts/emulator/sys/win32/erl_win_sys.h	2013-05-11 13:50:32.304734200 +0300
@@ -114,6 +114,13 @@
 #define HAVE_ERTS_CHECK_IO_DEBUG
 int erts_check_io_debug(void);
 
+#ifdef BUILDING_DLL
+# define OTP_Export_Flags  __declspec(dllexport)
+#else
+# define OTP_Export_Flags  __declspec(dllimport)
+#endif
+
+
 /*
  * For erl_time_sup
  */