From: Marc Kleine-Budde <mkl@pengutronix.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Sparse Mailing-list <linux-sparse@vger.kernel.org>
Subject: Re: building Linux for ARMv7 with llvm breaks sparse
Date: Thu, 31 Mar 2022 21:31:39 +0200 [thread overview]
Message-ID: <20220331193139.x3mqngrci3tc6sqo@pengutronix.de> (raw)
In-Reply-To: <CAHk-=wjeYjkXDpdHwobJ1X+Tk+N8xYPe_O6CbB3zg=fKRVhYJg@mail.gmail.com>
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On 31.03.2022 12:22:08, Linus Torvalds wrote:
> On Thu, Mar 31, 2022 at 12:17 PM Linus Torvalds
> <torvalds@linux-foundation.org> wrote:
> >
> > Does it all work if we just make the kernel use the normal
> >
> > -meabi=gnu
> >
> > syntax instead?
>
> IOW, just something like this
>
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -110,7 +110,7 @@ CFLAGS_ABI +=-funwind-tables
> endif
>
> ifeq ($(CONFIG_CC_IS_CLANG),y)
> -CFLAGS_ABI += -meabi gnu
> +CFLAGS_ABI += -meabi=gnu
> endif
>
> ifeq ($(CONFIG_CURRENT_POINTER_IN_TPIDRURO),y)
>
> that's basically what we do for all the other '-mxyz=abc' cases, so
> it's really that use of -meabi that stands out as being the odd man
> out.
No :/
| clang: error: unknown argument '-meabi=gnu'; did you mean '-mabi=gnu'?
The documentation says no "=":
| https://clang.llvm.org/docs/ClangCommandLineReference.html#cmdoption-clang-meabi
regards,
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
Vertretung West/Dortmund | Phone: +49-231-2826-924 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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next prev parent reply other threads:[~2022-03-31 19:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-31 11:01 building Linux for ARMv7 with llvm breaks sparse Marc Kleine-Budde
2022-03-31 19:17 ` Linus Torvalds
2022-03-31 19:22 ` Linus Torvalds
2022-03-31 19:31 ` Marc Kleine-Budde [this message]
2022-03-31 19:57 ` Linus Torvalds
2022-05-22 9:08 ` [PATCH] handle clang's option "-meabi gnu" Luc Van Oostenryck
2022-05-23 9:17 ` Marc Kleine-Budde
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