And here we are with gcc 7.1, the latest stable release of gcc to date ready for your Ataris! It was kind of supposed to be released at Sommarhack last week but we completely forgot :).
Like before, head to http://d-bug.mooo.com/beyondbrown/post/gcc7/ for the writeup and links and you're also welcome to try it live at http://brownbot.hopto.org