pgsql: Fix order of -I switches for building pg_regress.o. - Mailing list pgsql-committers

From Tom Lane
Subject pgsql: Fix order of -I switches for building pg_regress.o.
Date
Msg-id E1txEFZ-001057-2u@gemulon.postgresql.org
Whole thread Raw
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Fix order of -I switches for building pg_regress.o.

We need the -I switch for libpq_srcdir to come before any -I switches
injected by configure.  Otherwise there is a risk of pulling in a
mismatched version of libpq_fe.h from someplace like
/usr/local/include, if the platform has another Postgres version
installed there.  This evidently accounts for today's buildfarm
failures on "anaconda".

In principle the -I switch for src/port/ is at similar hazard, and has
been for a very long time.  But the only .h files we keep there are
pg_config_paths.h and pthread-win32.h, neither of which get installed
on Unix-ish systems, so the odds of picking up a conflicting header
seem pretty small.  That doubtless accounts for the lack of prior
reports.

Back-patch to v17 where pg_regress acquired a build dependency on
libpq_fe.h.  We could go back further to fix the hazard for src/port/
in older branches, but it seems unlikely to be worth troubling over.

Reported-by: Nathan Bossart <nathandbossart@gmail.com>
Author: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/Z-MhRzoc7t-nPUQG@nathan
Backpatch-through: 17

Branch
------
REL_17_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/f186f90e55b7d984be572e3628e19e6d018c7199

Modified Files
--------------
src/test/regress/GNUmakefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)


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