-RocksCE.ilbm: RocksCE-template.ilbm
- $(RND) -e "create CE image RocksCE.bmp"
- bmptoppm RocksCE.bmp | ppmtoilbm > RocksCE.ilbm
+RocksCE.png: RocksCE-template.ilbm
+ifneq ("$(wildcard RocksCE-template.ilbm)","")
+ $(RND) -e "create CE image ."
+ bmptoppm RocksCE.bmp | pnmtopng > $@