On Mon, 2024-09-16 at 11:09 -0400, Nick Bowler wrote: > > Yes, this is covered in the Autoconf manual[1]. > > Use --enable-option-checking=fatal. Ahhh. Excellent. I guess I just didn't have the right search terms when I went Googling for it. Thanks for the pointer! > I feel like these warnings are very visible since the same warnings > get printed both at the start and at the end of a configure run. Fair enough. My use case is having CI/CD driving configure and not wanting to have to parse configure output. The above option exactly satisfies that. Cheers, b.