Re: [PATCH] libgcc: allow building float128 libraries on FreeBSD

[Piotr Kubaj <pkubaj@freebsd.org>]

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Bumping. Is there anything wrong with this patch?

On 22-02-21 00:37:56, pkubaj@FreeBSD.org wrote:
> From: Piotr Kubaj <pkubaj@FreeBSD.org>
> 
> While FreeBSD currently uses 64-bit long double, there should be no
> problem with adding support for float128.
> 
> Signed-off-by: Piotr Kubaj <pkubaj@FreeBSD.org>
> ---
>  libgcc/configure    | 22 ++++++++++++++++++++++
>  libgcc/configure.ac | 11 +++++++++++
>  2 files changed, 33 insertions(+)
> 
> diff --git a/libgcc/configure b/libgcc/configure
> index 4919a56f518..334d20d1fb1 100755
> --- a/libgcc/configure
> +++ b/libgcc/configure
> @@ -5300,6 +5300,28 @@ fi
>  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgcc_cv_powerpc_3_1_float128_hw" >&5
>  $as_echo "$libgcc_cv_powerpc_3_1_float128_hw" >&6; }
>    CFLAGS="$saved_CFLAGS"
> +;;
> +powerpc*-*-freebsd*)
> +  saved_CFLAGS="$CFLAGS"
> +  CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128"
> +  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for PowerPC ISA 2.06 to build __float128 libraries" >&5
> +$as_echo_n "checking for PowerPC ISA 2.06 to build __float128 libraries... " >&6; }
> +if ${libgcc_cv_powerpc_float128+:} false; then :
> +  $as_echo_n "(cached) " >&6
> +else
> +  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
> +/* end confdefs.h.  */
> +vector double dadd (vector double a, vector double b) { return a + b; }
> +_ACEOF
> +if ac_fn_c_try_compile "$LINENO"; then :
> +  libgcc_cv_powerpc_float128=yes
> +else
> +  libgcc_cv_powerpc_float128=no
> +fi
> +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
> +fi
> +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgcc_cv_powerpc_float128" >&5
> +$as_echo "$libgcc_cv_powerpc_float128" >&6; }
>  esac
>  
>  # Collect host-machine-specific information.
> diff --git a/libgcc/configure.ac b/libgcc/configure.ac
> index 13a80b2551b..99ec5d405a4 100644
> --- a/libgcc/configure.ac
> +++ b/libgcc/configure.ac
> @@ -483,6 +483,17 @@ powerpc*-*-linux*)
>      [libgcc_cv_powerpc_3_1_float128_hw=yes],
>      [libgcc_cv_powerpc_3_1_float128_hw=no])])
>    CFLAGS="$saved_CFLAGS"
> +;;
> +powerpc*-*-freebsd*)
> +  saved_CFLAGS="$CFLAGS"
> +  CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128"
> +  AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries],
> +                 [libgcc_cv_powerpc_float128],
> +                 [AC_COMPILE_IFELSE(
> +    [AC_LANG_SOURCE([vector double dadd (vector double a, vector double b) { return a + b; }])],
> +    [libgcc_cv_powerpc_float128=yes],
> +    [libgcc_cv_powerpc_float128=no])])
> +  CFLAGS="$saved_CFLAGS"
>  esac
>  
>  # Collect host-machine-specific information.
> -- 
> 2.35.1
> 

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