> On 26 May 2015, at 21:57, Alex Dowad <alexinbeijing@gmail.com> wrote:
> 
> 
> 
> On 26/05/15 21:36, Rich Felker wrote:
> Hmm. -Werror=unknown-warning-option causes configure to disable -Wno-unused-but-set-variable.
> But it doesn't do anything for other ignored options. It causes problems when building with
> gcc as well.
> 
> This isn't a big issue; I'd suggest it's better not to get stuck on it.
> 
> Thanks, AD

clang also has -Werror=unused-command-line-argument, which I imagine would work better,
possibly in tandem with -Werror=unknown-warning option if those gcc problems can be weeded out.

-S