I mentioned in Go Reference that MCU10 and eclipse come with a comfortable infrastructure: you add, remove, rename source files and set compiler options: managed make will take care and creates the make files for you. Make files are such a great thing because they allow you do to pretty much everything.
Classic CodeWarrior uses a different approach without make files. Exporting the project as make file did not really work, so make files were not something you could have used easily in classic. With the eclipse based MCU10 make files are the heart of the build system. In most cases using the managed make system is perfectly fine. But for a bare metal enthusiast it makes sense to use my own make file instead.