Yo Richard! On Thu, 29 Aug 2019 16:52:16 -0500 Richard Laager via devel <devel@ntpsec.org> wrote:
> On 8/29/19 4:04 PM, Hal Murray via devel wrote:
> > Gary said:
> > [API for strerror_r()]
> >> On Linux, yes. But not on all distros. For example, on Android,
> >> which gpsd supports, strerror_r() always returns an int. No
> >> options.
> >
> > Same on NetBSD and FreeBSD.
>
> Right, so that seems like an argument to use the XSI interface, not
> the GNU one. Everyone but Linux glibc uses the XSI interface, and
> Linux glibc can be configured to present the XSI interface.
>
> "The XSI-compliant version is provided if: (_POSIX_C_SOURCE >=
> 200112L) && ! _GNU_SOURCE"
>
> So basically, don't set _GNU_SOURCE, and either don't set
> _POSIX_C_SOURCE at all, or set _POSIX_C_SOURCE to 200112L (or
> something newer)?
Then you can not run on older glibc (pre 2.13). CentOS supported 2.12 as
recently as 2017.
> Then make sure the NTPsec code is consistently written with the
> assumption of the XSI interface, not the GNU one (i.e. fix one of the
> mismatches in NTPsec, if that hasn't already been done).
And breaks not too old distros...
I'll leave that policy decision to someone else.
RGDS
GARY
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