Compared to that, debugging generated code is a breeze.
Also, there’s no “third-party” generators - everything just lives in your own source tree. If I ever need to go meta, it’s just a printf away; I can even commit the generated files to my VCS and be able to see what had changed in them between commits in a simple and understandable diff.
Regarding the integration, I’ll take setting up an additional build phase (once) over having to debug C macros any day.