install fix (Rusty Russel)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@685 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/Makefile.target b/Makefile.target
index 0d38b1d..07fa456 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -302,7 +302,9 @@
 	rm -f *.o  *.a *~ $(PROGS) gen-op.h opc.h op.h nwfpe/*.o
 
 install: all 
+ifneq ($(PROGS),)
 	install -m 755 -s $(PROGS) $(prefix)/bin
+endif
 
 ifneq ($(wildcard .depend),)
 include .depend