2010-09-20 22:08:53 +02:00
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# contrib/dblink/Makefile
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2001-06-14 18:49:03 +02:00
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2001-09-06 12:49:30 +02:00
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MODULE_big = dblink
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2019-11-05 23:41:07 +01:00
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OBJS = \
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$(WIN32RES) \
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dblink.o
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2011-02-14 02:06:41 +01:00
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PG_CPPFLAGS = -I$(libpq_srcdir)
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Prevent accidental linking of system-supplied copies of libpq.so etc.
We were being careless in some places about the order of -L switches in
link command lines, such that -L switches referring to external directories
could come before those referring to directories within the build tree.
This made it possible to accidentally link a system-supplied library, for
example /usr/lib/libpq.so, in place of the one built in the build tree.
Hilarity ensued, the more so the older the system-supplied library is.
To fix, break LDFLAGS into two parts, a sub-variable LDFLAGS_INTERNAL
and the main LDFLAGS variable, both of which are "recursively expanded"
so that they can be incrementally adjusted by different makefiles.
Establish a policy that -L switches for directories in the build tree
must always be added to LDFLAGS_INTERNAL, while -L switches for external
directories must always be added to LDFLAGS. This is sufficient to
ensure a safe search order. For simplicity, we typically also put -l
switches for the respective libraries into those same variables.
(Traditional make usage would have us put -l switches into LIBS, but
cleaning that up is a project for another day, as there's no clear
need for it.)
This turns out to also require separating SHLIB_LINK into two variables,
SHLIB_LINK and SHLIB_LINK_INTERNAL, with a similar rule about which
switches go into which variable. And likewise for PG_LIBS.
Although this change might appear to affect external users of pgxs.mk,
I think it doesn't; they shouldn't have any need to touch the _INTERNAL
variables.
In passing, tweak src/common/Makefile so that the value of CPPFLAGS
recorded in pg_config lacks "-DFRONTEND" and the recorded value of
LDFLAGS lacks "-L../../../src/common". Both of those things are
mistakes, apparently introduced during prior code rearrangements,
as old versions of pg_config don't print them. In general we don't
want anything that's specific to the src/common subdirectory to
appear in those outputs.
This is certainly a bug fix, but in view of the lack of field
complaints, I'm unsure whether it's worth the risk of back-patching.
In any case it seems wise to see what the buildfarm makes of it first.
Discussion: https://postgr.es/m/25214.1522604295@sss.pgh.pa.us
2018-04-03 22:26:05 +02:00
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SHLIB_LINK_INTERNAL = $(libpq)
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2001-06-14 18:49:03 +02:00
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2011-02-14 02:06:41 +01:00
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EXTENSION = dblink
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2020-02-19 22:59:14 +01:00
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DATA = dblink--1.2.sql dblink--1.1--1.2.sql dblink--1.0--1.1.sql
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2014-07-14 20:07:52 +02:00
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PGFILEDESC = "dblink - connect to other PostgreSQL databases"
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2002-09-03 06:01:05 +02:00
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2021-12-20 22:49:13 +01:00
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REGRESS = dblink
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2014-07-22 17:01:03 +02:00
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REGRESS_OPTS = --dlpath=$(top_builddir)/src/test/regress
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2004-08-20 22:13:10 +02:00
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ifdef USE_PGXS
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2007-06-27 00:05:04 +02:00
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PG_CONFIG = pg_config
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PGXS := $(shell $(PG_CONFIG) --pgxs)
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2004-08-20 22:13:10 +02:00
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include $(PGXS)
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else
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2014-12-04 13:58:12 +01:00
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SHLIB_PREREQS = submake-libpq
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2004-08-20 22:13:10 +02:00
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subdir = contrib/dblink
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top_builddir = ../..
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include $(top_builddir)/src/Makefile.global
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2001-09-06 12:49:30 +02:00
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include $(top_srcdir)/contrib/contrib-global.mk
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2004-08-20 22:13:10 +02:00
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endif
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