Date: Tue, 26 May 2015 23:14:43 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: [PATCH v2] When building, don't use compiler flags which cause warnings On Wed, May 27, 2015 at 04:22:59AM +0200, Shiz wrote: > > On 26 May 2015, at 21:57, Alex Dowad <alexinbeijing@...il.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, I think we _don't_ want this in our final CFLAGS (in fact we may want the opposite, Wno-...) because it will probably error out on linker options in CFLAGS or C compiler options in assembler invocations. But if it detects unknown options, we could use it just at configure time (if it's supported) to help determine when options are not supported. > possibly in tandem with -Werror=unknown-warning option if those gcc problems can be weeded out. Yes. Rich
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