Robert Haas <robertmhaas@gmail.com> writes:
> On Fri, Mar 11, 2016 at 9:13 AM, Aleksander Alekseev
> <a.alekseev@postgrespro.ru> wrote:
>> Sounds like quite a dirty hack to me. Besides so far we have only two
>> procedures from xlocale.h and this requires two checks. If we go this
>> way someday there will be 15 checks for every procedure from xlocale.h
> Eh, probably not. Most likely, if you check whether one of the
> functions you care about is in that file, that's good enough.
Yeah. In practice, there are exactly two cases we care about: either
both of these functions will be declared in <stdlib.h> like POSIX
says, or both of them will be in <xlocale.h>. There's no need to
work harder than we have to do to figure that out.
I'm totally unimpressed with the proposal of depending on the __FreeBSD__
macro instead of having a proper configure check. For one thing, we
have no idea whether NetBSD or OpenBSD have this same issue. For
another, it might be version-specific, or might become so if FreeBSD
decides to start following POSIX on this point someday.
regards, tom lane