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Tom Lane c74f48a4ec Prevent accidental linking of system-supplied copies of libpq.so etc. 
Back-patch commit dddfc4cb2, which broke LDFLAGS and related Makefile
variables into two parts, one for within-build-tree library references and
one for external libraries, to ensure that the order of -L flags has all
of the former before all of the latter.  This turns out to fix a problem
recently noted on buildfarm member peripatus, that we attempted to
incorporate code from libpgport.a into a shared library.  That will fail on
platforms that are sticky about putting non-PIC code into shared libraries.
(It's quite surprising we hadn't seen such failures before, since the code
in question has been like that for a long time.)

I think that peripatus' problem could have been fixed with just a subset
of this patch; but since the previous issue of accidentally linking to the
wrong copy of a Postgres shlib seems likely to bite people in the field,
let's just back-patch the whole change.  Now that commit dddfc4cb2 has
survived some beta testing, I'm less afraid to back-patch it than I was
at the time.

This also fixes undesired inclusion of "-DFRONTEND" in pg_config's CPPFLAGS
output (in 9.6 and up) and undesired inclusion of "-L../../src/common" in
its LDFLAGS output (in all supported branches).

Back-patch to v10 and older branches; this is already in v11.

Discussion: https://postgr.es/m/20180704234304.bq2dxispefl65odz@ler-imac.local
2018-07-09 17:23:31 -04:00
..
t Rework PostgresNode's psql method 2016-03-03 17:58:30 -03:00
.gitignore Call xlc __isync() after, not before, associated compare-and-swap. 2016-02-19 22:47:50 -05:00
exprparse.y Update copyright via script for 2017 2017-01-03 13:48:53 -05:00
exprscan.l Allow backslash line continuations in pgbench's meta commands. 2017-01-20 11:10:22 -05:00
Makefile Prevent accidental linking of system-supplied copies of libpq.so etc. 2018-07-09 17:23:31 -04:00
pgbench.c Fix busy-wait in pgbench, with --rate. 2017-10-01 09:34:29 +03:00
pgbench.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00