diff --git i/jni/mdxmini/Makefile w/jni/mdxmini/Makefile
index 9b63041..53bc547 100644
--- i/jni/mdxmini/Makefile
+++ w/jni/mdxmini/Makefile
@@ -73,10 +73,9 @@ $(TARGET) : $(OBJS) $(LIB)
 $(LIB): $(MKLIB)
 
 $(MKLIB):
-	make -f Makefile.lib
+	$(MAKE) -f Makefile.lib
 
-$(OBJDIR)/nlg.o: src/nlg.c
-	$(CC) -o $@ $< -c $(CFLAGS)
+$(OBJDIR)/nlg.o: src/nlg.c $(MKLIB)
 
 $(OBJDIR)/sdlplay.o: sdlplay.c
 	$(CC) -o $@ $< -c $(CFLAGS)
diff --git i/jni/mdxmini/mak/general.mak w/jni/mdxmini/mak/general.mak
index e56323b..51872ec 100644
--- i/jni/mdxmini/mak/general.mak
+++ w/jni/mdxmini/mak/general.mak
@@ -10,17 +10,16 @@ SLIBS =
 LFLAGS =
  
 ifdef DEBUG
-CFLAGS = -g -O0
+CFLAGS ?= -g -O0
 OBJDIR = obj_dbg
 else
-CFLAGS = -g -O3
+CFLAGS ?= -g -O3
 OBJDIR = obj
 endif
 
 # iconv
 ifneq ($(OS),Windows_NT)
-CFLAGS += -DUSE_ICONV
-LIBS += -liconv
+LIBS += -lm
 endif
 
 #
diff --git i/jni/mdxmini/mak/lib.mak w/jni/mdxmini/mak/lib.mak
index 38af592..c24a1af 100644
--- i/jni/mdxmini/mak/lib.mak
+++ w/jni/mdxmini/mak/lib.mak
@@ -3,13 +3,13 @@ LIB = $(OBJDIR)/libmdxmini.a
 OBJFILES =  mdxmini.o mdx2151.o mdxmml_ym2151.o 
 OBJFILES += pdxfile.o mdxfile.o pcm8.o ym2151.o nlg.o
 
-CFLAGS += -DUSE_NLG -I.
+CFLAGS += -DUSE_NLG -I. -fPIC
 
 SRCDIR = src
 
 OBJS = $(addprefix $(OBJDIR)/,$(OBJFILES))
 
-all : $(OBJDIR) $(LIB)
+all : $(OBJDIR) $(LIB) $(OBJDIR)/libmdxmini.so
 
 $(OBJDIR) :
 	mkdir $(OBJDIR)
@@ -17,5 +17,8 @@ $(OBJDIR) :
 $(LIB) : $(OBJS)
 	$(AR) rcs $@ $(OBJS)
 
+$(OBJDIR)/libmdxmini.so : $(OBJS)
+	$(CC) $(CFLAGS) -Wl,-Bsymbolic -shared -o $@ $^ $(LIBS)
+
 $(OBJDIR)/%.o : $(SRCDIR)/%.c
 	$(CC) $(CFLAGS) -o $@ $< -c