Unlocking usr files

I was running into an error trying to compile a C program which eventually turned out to be caused by a locked usr file which contained a locked include file. I unlocked them and everything works fine. I was concerned about having these unlocked, though, since they are pretty important files and all. Is there a way to grant access to the include file just for the compiler without having these files unlocked? I know that I am not going to go in there and mess things up, but I am concerned if it is more of a security risk.

In case it matters, I am simply using TextEdit to write the code and accessing the vcc through Terminal to compile and run the program.