--- scripts/makefile.linux.orig	2003-01-24 00:17:05.000000000 -0500
+++ scripts/makefile.linux	2003-01-24 00:22:41.000000000 -0500
@@ -97,12 +97,12 @@
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ)
 
 $(LIBNAME).so.$(PNGVER): $(OBJSDLL)
-	$(CC) -shared -Wl,-soname,$(LIBNAME).so.$(PNGMAJ) \
+	$(CC) -shared -Wl,-soname,$(LIBNAME).so.$(PNGMAJ) -lz \
 	-o $(LIBNAME).so.$(PNGVER) \
 	$(OBJSDLL)
 
 libpng.so.3.$(PNGMIN): $(OBJSDLL)
-	$(CC) -shared -Wl,-soname,libpng.so.3 \
+	$(CC) -shared -Wl,-soname,libpng.so.3 -lz \
 	-o libpng.so.3.$(PNGMIN) \
 	$(OBJSDLL)