Compiler flag to include some_file_name.h into all files?

I am working on my honors thesis and want to change my threading method from std::threads to include boost::threadpool. I am able to accomplish this easily by just doing a

#include "../include/threadpool.hpp"

within each of my files, but this becomes very repetitive with many files / changes to thread systems. Is there some way to give a compiler flag (or something else) so that all files natively #include that file?

My naive thought would be something like

//dependencies.h
#include "../include/threadpool.hpp"
#include //some other dependency I need.h

And pass a

-I "path_to_dependencies.h"

flag to compiler. Would something like this work or am I off base?

Thanks!