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From: Florian Weimer <fw@deneb.enyo.de>
To: Paul E Murphy <murphyp@linux.ibm.com>
Cc: "Paul E. Murphy via Libc-alpha" <libc-alpha@sourceware.org>
Subject: Re: [PATCH v3 6/6] powerpc64le: Enable support for IEEE long double
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Date: Wed, 22 Apr 2020 18:23:52 +0200
In-Reply-To: <e5824f2e-f808-0196-323d-387a942a67c9@linux.ibm.com> (Paul
 E. Murphy's message of "Wed, 22 Apr 2020 11:20:38 -0500")
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* Paul E. Murphy:

> On 4/22/20 10:15 AM, Florian Weimer wrote:
>> * Paul E. Murphy via Libc-alpha:
>>=20
>>> diff --git a/NEWS b/NEWS
>>> index 07da1545b4..a54c0e0f65 100644
>>> --- a/NEWS
>>> +++ b/NEWS
>>> @@ -14,6 +14,11 @@ Major new features:
>>>   * The GNU C Library now loads audit modules listed in the DT_AUDIT and
>>>     DT_DEPAUDIT dynamic section entries of the main executable.
>>>=20=20=20
>>> +* powerpc64le supports IEEE128 long double libm/libc redirects when
>>> +  using the -mabi=3Dieeelongdouble to compile C code on supported GCC
>>> +  toolchains.  It is recommended to use GCC 8 or newer when testing
>>> +  this option.
>>=20
>> Why do you write =E2=80=9Ctesting this option=E2=80=9D?
>>=20
>> To me, this implies that the feature is not ready yet.  Is that the
>> case?
>>=20
> I still consider the IEEE128 ldouble feature experimental on ppc64le.=20
> Thus, why we need to explicitly invoke extra compiler options today.=20
> This is another necessary step towards maturing the feature.  The ABI=20
> needs to be stablized to continue gcc enablement, and I think the ABI=20
> piece is ready.

Ahh, thanks.  I think then the text is fine, and we can revisit the
overall presentation of this feature in the NEWS file later, closer to
the glibc 2.32 release.