Imported from libpng-1.2.4beta3.tar
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index e85c02b..8df2aee 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -33,7 +33,7 @@
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.4beta2
+PNGMIN = 1.2.4beta3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include
@@ -172,9 +172,21 @@
 
 install: install-static install-shared install-man install-config
 
+# If you installed in $(DESTDIR), test-installed won't work until you
+# move the library to its final location.
+
+test-installed:
+	echo
+	echo Testing installed dynamic shared library.
+	$(CC) $(SUN_CC_FLAGS) -I$(ZLIBINC) \
+	   `$(BINPATH)/libpng12-config --cppflags --cflags` pngtest.c \
+	   -o pngtesti `$(BINPATH)/libpng12-config --ldflags --libs` \
+	   $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB)
+	pngtesti pngtest.png
+
 clean:
-	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* \
-	pngtest pngout.png
+	/bin/rm -f *.o libpng.a pngtest pngtesti pngout.png libpng.pc \
+	libpng-config $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)*
 
 DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
 writelock: