I have a Visual Studio project that uses a solution file to build it. I want to generate a makefile so that I can build it using the makefile instead of the solution file. (The reason I need to do this in case you are wondering is that I am incorporating my project into a larger software system that uses makefiles to build, and I want to be able to build the whole thing using the makefiles.)

Is there a way to automatically get the information from the Visual Studio solution and convert it into a makefile format, or do I need to do that manually?