Tell git never to update a file

I have a few files in git (namely configure files), that I need to be in the git repo, but I don't want them to ever update (for some reason, running them, and make, changes the configure file).

So is there any way I can tell git to ignore any CHANGES to the file, but to keep the original file still in the repo? Currently the only way I've found out to do something like this is to add the file to the .gitignore file, and the git add the file to the project directly (using -f to override). Is there any better way?