diff --git a/Makefile b/Makefile
index 0cd5bd2..20fbd45 100644
--- a/Makefile
+++ b/Makefile
@@ -6,8 +6,15 @@ objects = fvnlib.o
 modobjects = $(objects)
 
 library = libfvn$(libext)
+libso   = libfvn$(soext)
 
+ifeq ($(BUILDSO),y)
+all: sub $(library) $(libso)
+else
 all: sub $(library)
+endif
+
+
 
 sub:
 		( cd fvn_common && make && make install )
@@ -19,7 +26,7 @@ sub:
 		( cd fvn_misc && make && make install )
 
 clean:
-		rm -f {*.o,*.oo,*.ipo,*.a,*.mod}
+		rm -f {*.o,*.oo,*.ipo,*.a,*.mod,*.so}
 		( cd fvn_common && make clean )
 		( cd fvn_linear && make clean )
 		( cd fvn_integ && make clean )
@@ -31,6 +38,9 @@ clean:
 install:
 		cp fvn.mod $(BTREE)/modules
 		cp $(library) $(BTREE)/lib
+ifeq ($(BUILDSO),y)
+		cp $(libso) $(BTREE)/lib
+endif
 
 %.o: %.f90
 		$(F95) $(F95FLAGS) -c $< -o $@
@@ -51,3 +61,8 @@ $(library): $(objects) sub
 		$(AR) ru $@ fvn_misc/*.o
 		$(RANLIB) $@
 
+
+ifeq ($(BUILDSO),y)
+$(libso): $(library)
+		ld -shared -soname $(libso) -o $(libso) --whole-archive $(library)
+endif