RFC: Changing AC_PROG_CC to AC_PROG_CC_C99 in top level configure

[Simon Marchi]

On 2021-04-26 7:32 a.m., Nick Clifton via Gdb-patches wrote:> Hi Guys,
> 
>   Given that gcc, gdb and now binutils are all now requiring C99 as a
>   minimum version of C, are there any objections to updating
>   configure.ac to reflect this ?
> 
> Cheers
>   Nick
> 
> diff --git a/configure.ac b/configure.ac
> index a721316d07b..59b4194fb24 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -1278,7 +1278,7 @@ else
>    WINDMC_FOR_BUILD="\$(WINDMC)"
>  fi
> 
> -AC_PROG_CC
> +AC_PROG_CC_C99
>  AC_PROG_CXX
> 
>  # We must set the default linker to the linker used by gcc for the correct

Hi Nick,

I think this fix is obvious enough, I encourage you to push it, that
will fix the build failure many people get in opcodes/ppc-dis.c.  We'll
just remove the line later when we upgrade to Autoconf 2.71, as simple
as that.  For now we use 2.69.  If that matters, you have my OK for the
GDB side of things.

Simon