I dunno, I'm a bit inclined to think that we can't support '-Wall -Werror' for every Tom Dick and Harry compiler out there. It's a pain enough to get it to work even with GCC. Does it work if you configure with "-Wall -Wno-tautological-compare -Werror" instead? If so, I'd do that.
- [PATCH] Add pragma to ignore clang warning as done for gcc in... Thomas Braun
- Re: [PATCH] Add pragma to ignore clang warning as done f... Paul Eggert