In Simulink, how to include source and header files in the generated code (project)

Hi!

I'm working on generating C code from Simulink modell for FreeRTOS. So, I generated some working code, but theese weren't built by Simulink Embedded coder, only generated. I built the codes in VisualStudio. The downloaded FreeRTOS folder contains a lot of source, header files and folders. There is a folder, in which there is a VS project, and it's for trying the codes in windows. If I put my generated code into this project, there wasn't any problem. But I want to speed up this method, so I would like if I have to push only the "Build" button, and as a result of it I would get the executable file. My problem is, that I can't link correctly the needed files and folders of FreeRTOS. In the first round I just want to get a totally Simulink generated VisualStudio project, which can produce a running program by building it. I tried adding folders on "Custom Code" pane of "Configuration Parameters" but it didn't work. As I see, I can include directories, which contain header and source files, but in the generated VS project only the header files appeared and there are a lot of errrors.(For example there are a lot of undeclared identifiers, which are normally defined by a file of FreeRTOS.) Because of the high number of source files, I don't want to type all the pathes of them. So my question is, how is it possible to simply generate a project by Simulink, which contains all the essential files and folders?! Thank you very much!