Horton

Re: pl/perl extension fails on Windows

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Ashutosh Sharma <ashu.coek88@gmail.com>, Sandeep Thakkar <sandeep.thakkar@enterprisedb.com>, Christoph Berg <myon@debian.org>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2017-08-10T15:11:06Z
Lists: pgsql-hackers 
On Thu, Aug 10, 2017 at 10:36 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Yeah ... however, if that's there, then there's something wrong with
> Ashutosh's explanation, because that means we *are* building with
> _USE_32BIT_TIME_T in 32-bit builds.  It's just getting there in a
> roundabout way.  (Or, alternatively, this code is somehow not doing
> anything at all.)

I don't follow.

>> The trouble with that is that _USE_32BIT_TIME_T also affects how
>> PostgreSQL code compiles.
>
> Really?  We try to avoid touching "time_t" at all in most of the code.
> I bet that we could drop the above-cited code, and compile only plperl
> with _USE_32BIT_TIME_T, taken (if present) from the Perl flags, and
> it'd be fine.  At least, that's my first instinct for what to try.

Oh.  Well, if that's an OK thing to do, then sure, wfm.  I guess we've
got pg_time_t plastered all over the backend but that's not actually
time_t under the hood, so it's fine.  I do see time_t being used in
frontend code, but that won't matter for this.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Commits

  1. MSVC: Test whether 32-bit Perl needs -D_USE_32BIT_TIME_T.

  2. Further tweaks to compiler flags for PL/Perl on Windows.

  3. Absorb -D_USE_32BIT_TIME_T switch from Perl, if relevant.

  4. PL/Perl portability fix: absorb relevant -D switches from Perl.

  5. PL/Perl portability fix: avoid including XSUB.h in plperl.c.