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Message-ID: <5800d4ac7d06c2cbf4d7979fb97395ce@smtp.hushmail.com>
Date: Thu, 05 Jul 2012 19:01:32 +0200
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: warning: argument unused during compilation: '-faddress-sanitizer'
for clang-debug
On 2012-07-05 18:21, Frank Dittrich wrote:
> With
>
> $ clang -dumpversion
> 4.2.1
>
> $ clang --version
> clang version 2.9 (tags/RELEASE_29/final)
> Target: i386-redhat-linux-gnu
> Thread model: posix
>
> I get a warning per .c file when building linux-x86-debug:
> clang: warning: argument unused during compilation: '-faddress-sanitizer'
>
> clang version 3.1 supports -faddress-sanitizer, clang version 2.9 doesn't.
>
> clang 3.0 which also claims to be gcc 4.2.1 compatible also doesn't
> support this flag (tested for linux-x86-64-clang-debug under Fedora 17).
Same for Ubuntu with 3.0.
> Does anybody know how to adjust the Makefile to include
> -faddress-sanitizer into the CFLAGS for the two clang-debug targets only
> if the clang version is >= 3.1?
> (I don't know what clang -dumpversion prints for that release.)
I'm not aware of any way. The warning is a good thing but it would be
better if it was emitted just once :)
magnum
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