Hi Mahmoodn, > I want to tell make that compile VVc_demo.cpp whenever "a.cpp" or "b.cpp" or > "c.cpp" or ... changed. > How can I do that? VVc_demo$(OBJ_EXT) : a.cpp b.cpp c.cpp g++ -o $@ -c VVc_demo.cpp (Usually you'd add VVc_demo.cpp itself to the dependency list as well.) HTH, --Eljay