postgresql/contrib
Tom Lane 3c163a7fc7 PL/Perl portability fix: absorb relevant -D switches from Perl.
The Perl documentation is very clear that stuff calling libperl should
be built with the compiler switches shown by Perl's $Config{ccflags}.
We'd been ignoring that up to now, and mostly getting away with it,
but recent Perl versions contain ABI compatibility cross-checks that
fail on some builds because of this omission.  In particular the
sizeof(PerlInterpreter) can come out different due to some fields being
added or removed; which means we have a live ABI hazard that we'd better
fix rather than continuing to sweep it under the rug.

However, it still seems like a bad idea to just absorb $Config{ccflags}
verbatim.  In some environments Perl was built with a different compiler
that doesn't even use the same switch syntax.  -D switch syntax is pretty
universal though, and absorbing Perl's -D switches really ought to be
enough to fix the problem.

Furthermore, Perl likes to inject stuff like -D_LARGEFILE_SOURCE and
-D_FILE_OFFSET_BITS=64 into $Config{ccflags}, which affect libc ABIs on
platforms where they're relevant.  Adopting those seems dangerous too.
It's unclear whether a build wherein Perl and Postgres have different ideas
of sizeof(off_t) etc would work, or whether anyone would care about making
it work.  But it's dead certain that having different stdio ABIs in
core Postgres and PL/Perl will not work; we've seen that movie before.
Therefore, let's also ignore -D switches for symbols beginning with
underscore.  The symbols that we actually need to import should be the ones
mentioned in perl.h's PL_bincompat_options stanza, and none of those start
with underscore, so this seems likely to work.  (If it turns out not to
work everywhere, we could consider intersecting the symbols mentioned in
PL_bincompat_options with the -D switches.  But that will be much more
complicated, so let's try this way first.)

This will need to be back-patched, but first let's see what the
buildfarm makes of it.

Ashutosh Sharma, some adjustments by me

Discussion: https://postgr.es/m/CANFyU97OVQ3+Mzfmt3MhuUm5NwPU=-FtbNH5Eb7nZL9ua8=rcA@mail.gmail.com
2017-07-28 14:25:28 -04:00
..
adminpack Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
amcheck Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
auth_delay Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
auto_explain Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
bloom Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
btree_gin Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
btree_gist Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
chkpass Further cleanup from the strong-random patch. 2016-12-12 11:55:32 +02:00
citext Optimize joins when the inner relation can be proven unique. 2017-04-07 22:20:13 -04:00
cube Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
dblink Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
dict_int Update copyright via script for 2017 2017-01-03 13:48:53 -05:00
dict_xsyn Update copyright via script for 2017 2017-01-03 13:48:53 -05:00
earthdistance Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
file_fdw Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
fuzzystrmatch Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
hstore Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
hstore_plperl PL/Perl portability fix: absorb relevant -D switches from Perl. 2017-07-28 14:25:28 -04:00
hstore_plpython Drop support for Python 2.3 2017-02-21 09:49:22 -05:00
intagg Schema-qualify some references to regprocedure. 2016-06-10 10:41:58 -04:00
intarray Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
isn Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
lo Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
ltree Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
ltree_plpython Code review for avoidance of direct cross-module links. 2017-02-02 11:21:16 -05:00
oid2name Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
pageinspect Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
passwordcheck Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
pg_buffercache Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
pg_freespacemap Default monitoring roles 2017-03-30 14:18:53 -04:00
pg_prewarm Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
pg_standby Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
pg_stat_statements Code review for NextValueExpr expression node type. 2017-07-14 15:25:43 -04:00
pg_trgm Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
pg_visibility Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
pgcrypto Forbid gen_random_uuid() with --disable-strong-random 2017-07-03 12:10:11 +03:00
pgrowlocks Teach pgrowlocks to check relkind before scanning 2017-06-21 23:19:13 -04:00
pgstattuple Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
postgres_fdw When WCOs are present, disable direct foreign table modification. 2017-07-24 15:57:24 -04:00
seg Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
sepgsql Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
spi Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
sslinfo Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
start-scripts Fix typos in comments. 2017-02-06 11:33:58 +02:00
tablefunc Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
tcn Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
test_decoding Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
tsm_system_rows Update copyright via script for 2017 2017-01-03 13:48:53 -05:00
tsm_system_time Update copyright via script for 2017 2017-01-03 13:48:53 -05:00
unaccent Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
uuid-ossp Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
vacuumlo Initial pgindent run with pg_bsd_indent version 2.0. 2017-06-21 14:39:04 -04:00
xml2 Phase 3 of pgindent updates. 2017-06-21 15:35:54 -04:00
contrib-global.mk Respect TEMP_CONFIG when pg_regress_check and friends are called 2016-02-27 12:28:21 -05:00
Makefile Add amcheck extension to contrib. 2017-03-09 16:33:02 -08:00
README Rename 'gmake' to 'make' in docs and recommended commands 2014-02-12 17:29:19 -05:00

The PostgreSQL contrib tree
---------------------------

This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree.  This does not preclude their
usefulness.

User documentation for each module appears in the main SGML
documentation.

When building from the source distribution, these modules are not
built automatically, unless you build the "world" target.  You can
also build and install them all by running "make all" and "make
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.

Some directories supply new user-defined functions, operators, or
types.  To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command.  In a fresh database,
you can simply do

    CREATE EXTENSION module_name;

See the PostgreSQL documentation for more information about this
procedure.