Makefile | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index b4a49f8..410e018 100644
--- a/Makefile
+++ b/Makefile
@@ -7,12 +7,17 @@ LIBDIR=$(DESTDIR)/usr/lib
 INSTALL=install
 
 # You may need to change the -I arguments depending on your system
-CFLAGS=-O3 -I/usr/include/tcl8.3/ -I/usr/include/tcl
+#CFLAGS=-O3 -I/usr/include/tcl8.3/ -I/usr/include/tcl
+
+LIBS = -ltcl
 
 all:	libfilecmp.so.0.0
 
-libfilecmp.so.0.0: filecmp.c
-	$(CC) $(CFLAGS) -shared -o $@ filecmp.c
+.c.o:
+	$(CC) $(CPPFLAGS) $(CFLAGS) -fPIC -c $< -o $@
+
+libfilecmp.so.0.0: filecmp.o
+	$(CC) $(LDFLAGS) -shared -Wl,-soname,libfilecmp.so.0 -o $@ filecmp.o $(LIBS)
 
 install: dirdiff libfilecmp.so.0.0
 	$(INSTALL) -c dirdiff $(BINDIR)