diff -r 4e16f44f91df -r 7af800edb1d4 compile/Make_mingw.mak
--- a/compile/Make_mingw.mak
+++ b/compile/Make_mingw.mak
@@ -12,9 +12,12 @@
 libmigemo_LIB = $(outdir)libmigemo.dll.a
 libmigemo_DSO = $(outdir)$(DLLNAME)
 EXEEXT = .exe
-CFLAGS_MIGEMO =
+CFLAGS_MIGEMO = -D_MIGEMO_EXPORTS
 LDFLAGS_MIGEMO =
 CC = gcc
+DLLTOOL = dlltool
+DLLWRAP = dllwrap
+DLLFLAGS_MIGEMO = -k
 
 include config.mk
 include compile/unix.mak
@@ -24,10 +27,18 @@
 
 ##############################################################################
 # 環境に応じてライブラリ構築法を変更する
-#
+
 $(libmigemo_LIB): $(libmigemo_DSO)
-$(libmigemo_DSO): $(libmigemo_OBJ) $(srcdir)migemo.def
-	dllwrap -o $(libmigemo_DSO) --dllname $(DLLNAME) --implib $(libmigemo_LIB) --def $(srcdir)migemo.def $(libmigemo_OBJ)
+	# <@n>付きDEFを使い、-k(--kill-at)を付けてlib*.a出力
+	$(DLLTOOL) -D $< -d $(outdir)migemo.def -l $@ $(DLLFLAGS_MIGEMO)
+
+$(libmigemo_DSO): $(libmigemo_OBJ)
+	# DEF出力。一緒に-k(--kill-at)を指定するとDEFファイルの<@n>も消える
+	$(DLLWRAP) -o $@ $^ --dllname $(DLLNAME) --output-def $(outdir)migemo.def
+	# 関数名に<@n>が付いてるので一度削除
+	$(RM) $@
+	# DLL出力。-k(--kill-at)を付けて<@n>を削除
+	$(DLLWRAP) -o $@ $^ $(DLLFLAGS_MIGEMO)
 
 install-lib: $(libmigemo_DSO) $(libmigemo_LIB)
 	$(INSTALL_DATA)		$(libmigemo_LIB) $(libdir)
diff -r 4e16f44f91df -r 7af800edb1d4 src/migemo.h
--- a/src/migemo.h
+++ b/src/migemo.h
@@ -8,12 +8,22 @@
 #ifndef MIGEMO_H
 #define MIGEMO_H
 
-#if defined(_WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN32__)
+#if defined(_WIN32) && !defined(__CYGWIN32__)
 # define MIGEMO_CALLTYPE __stdcall
 #else
 # define MIGEMO_CALLTYPE
 #endif
 
+#if defined(_WIN32) && defined(__MINGW32__)
+# ifdef _MIGEMO_EXPORTS
+#  define MIGEMO_DECLSPEC __declspec(dllexport)
+# else
+#  define MIGEMO_DECLSPEC __declspec(dllimport)
+# endif
+#else
+# define MIGEMO_DECLSPEC
+#endif
+
 #define MIGEMO_VERSION "1.3"
 
 /* for migemo_load() */
@@ -45,25 +55,25 @@
 extern "C" {
 #endif
 
-migemo* MIGEMO_CALLTYPE	migemo_open(const char* dict);
-void MIGEMO_CALLTYPE	migemo_close(migemo* object);
-unsigned char* MIGEMO_CALLTYPE migemo_query(migemo* object,
+MIGEMO_DECLSPEC migemo* MIGEMO_CALLTYPE	migemo_open(const char* dict);
+MIGEMO_DECLSPEC void MIGEMO_CALLTYPE	migemo_close(migemo* object);
+MIGEMO_DECLSPEC unsigned char* MIGEMO_CALLTYPE migemo_query(migemo* object,
 	const unsigned char* query);
-void MIGEMO_CALLTYPE	migemo_release(migemo* object,
+MIGEMO_DECLSPEC void MIGEMO_CALLTYPE	migemo_release(migemo* object,
 	unsigned char* string);
 
-int MIGEMO_CALLTYPE	migemo_set_operator(migemo* object, int index,
+MIGEMO_DECLSPEC int MIGEMO_CALLTYPE	migemo_set_operator(migemo* object, int index,
 	const unsigned char* op);
-const unsigned char* MIGEMO_CALLTYPE migemo_get_operator(migemo* object,
+MIGEMO_DECLSPEC const unsigned char* MIGEMO_CALLTYPE migemo_get_operator(migemo* object,
 	int index);
-void MIGEMO_CALLTYPE	migemo_setproc_char2int(migemo* object,
+MIGEMO_DECLSPEC void MIGEMO_CALLTYPE	migemo_setproc_char2int(migemo* object,
 	MIGEMO_PROC_CHAR2INT proc);
-void MIGEMO_CALLTYPE	migemo_setproc_int2char(migemo* object,
+MIGEMO_DECLSPEC void MIGEMO_CALLTYPE	migemo_setproc_int2char(migemo* object,
 	MIGEMO_PROC_INT2CHAR proc);
 
-int MIGEMO_CALLTYPE	migemo_load(migemo* obj, int dict_id,
+MIGEMO_DECLSPEC int MIGEMO_CALLTYPE	migemo_load(migemo* obj, int dict_id,
 	const char* dict_file);
-int MIGEMO_CALLTYPE	migemo_is_enable(migemo* obj);
+MIGEMO_DECLSPEC int MIGEMO_CALLTYPE	migemo_is_enable(migemo* obj);
 
 #ifdef __cplusplus
 }