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Re: [Qemu-ppc] [PATCH v5 3/3] configure: Force the C standard to gnu99

From: Daniel P . Berrangé
Subject: Re: [Qemu-ppc] [PATCH v5 3/3] configure: Force the C standard to gnu99
Date: Fri, 11 Jan 2019 09:23:13 +0000
User-agent: Mutt/1.10.1 (2018-07-13)

On Fri, Jan 11, 2019 at 09:17:52AM +0100, Thomas Huth wrote:
> Different versions of GCC and Clang use different versions of the C standard.
> This repeatedly caused problems already, e.g. with duplicated typedefs:
>  https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg05829.html
> or with for-loop variable initializers:
>  https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg00237.html
> To avoid these problems, we should enforce the C language version to the
> same level for all compilers. Since our minimum compiler versions is
> GCC v4.8, our best option is "gnu99" for C code right now ("gnu17" is not
> available there yet, and "gnu11" is marked as "experimental"), and "gnu++98"
> for the few C++ code that we have in the repository.
> Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
> Reviewed-by: Richard Henderson <address@hidden>
> Signed-off-by: Thomas Huth <address@hidden>
> ---
>  configure | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)

Reviewed-by: Daniel P. Berrangé <address@hidden>

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