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Since 19252e8ec93 we reject Python 2 during build configuration. Now that the
dust on the buildfarm has settled, remove regression testing infrastructure
dealing with differing output between Python 2 / 3.
Reviewed-By: Peter Eisentraut <peter@eisentraut.org>
Reviewed-By: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/20211031184548.g4sxfe47n2kyi55r@alap3.anarazel.de
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Since 19252e8ec93 we reject Python 2 during build configuration. Now that the
dust on the buildfarm has settled, remove extension variants specific to
Python 2.
Reviewed-By: Peter Eisentraut <peter@eisentraut.org>
Reviewed-By: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/20211031184548.g4sxfe47n2kyi55r@alap3.anarazel.de
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When maintaining or merging patches, one of the most common sources
for conflicts are the list of objects in makefiles. Especially when
the split across lines has been changed on both sides, which is
somewhat common due to attempting to stay below 80 columns, those
conflicts are unnecessarily laborious to resolve.
By splitting, and alphabetically sorting, OBJS style lines into one
object per line, conflicts should be less frequent, and easier to
resolve when they still occur.
Author: Andres Freund
Discussion: https://postgr.es/m/20191029200901.vww4idgcxv74cwes@alap3.anarazel.de
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Neither plperl nor plpython installed sufficient header files to
permit transform modules to be built out-of-tree using PGXS. Fix that
by installing all plperl and plpython header files (other than those
with special purposes such as generated data tables), and also install
plpython's special .mk file for mangling regression tests.
(This commit does not fix the windows install, which does not
currently install _any_ plperl or plpython headers.)
Also fix the existing transform modules for hstore and ltree so that
their cross-module #include directives work as anticipated by commit
df163230b9 et seq. This allows them to serve as working examples of
how to reference other modules when doing separate out-of-tree builds.
Discussion: https://postgr.es/m/87o9ej8bgl.fsf%40news-spur.riddles.org.uk
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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
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Remove $(pkglibdir) from $(rpathdir), since commits
d51924be886c2a05e691fa05b16cb6b30ab8370f and
eda04886c1e048d695728206504ab4198462168e removed direct linkage to
objects stored there. Users are unlikely to notice the difference.
Accompany every $(python_libspec) with $(python_additional_libs); this
doesn't fix a demonstrated bug, but it might do so on rare Python
configurations. With these changes, AIX ceases to be a special case.
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Previously, on most platforms, we allowed hstore_plpython's references
to hstore and plpython to be unresolved symbols at link time, trusting
the dynamic linker to resolve them when the module is loaded. This
has a number of problems, the worst being that the dynamic linker
does not know where the references come from and can do nothing but
fail if those other modules haven't been loaded. We've more or less
gotten away with that for the limited use-case of datatype transform
modules, but even there, it requires some awkward hacks, most recently
commit 83c249200.
Instead, let's not treat these references as linker-resolvable at all,
but use function pointers that are manually filled in by the module's
_PG_init function. There are few enough contact points that this
doesn't seem unmaintainable, at least for these use-cases. (Note that
the same technique wouldn't work at all for decoupling from libpython
itself, but fortunately that's just a standard shared library and can
be linked to normally.)
This is an initial patch that just converts hstore_plpython. If the
buildfarm doesn't find any fatal problems, I'll work on the other
transform modules soon.
Tom Lane, per an idea of Andres Freund's.
Discussion: <2652.1475512158@sss.pgh.pa.us>
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The order of inclusion of .o files makes a difference in linker output;
not a functional difference, but still a bitwise difference, which annoys
some packagers who would like reproducible builds.
Report and patch by Christoph Berg
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This still doesn't work correctly with Python 3, but I am committing
this so we can get Cygwin buildfarm members building with Python 2.
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The result closely resembles linking of these modules for the "win32"
port. Augment the $(exports_file) header so the file is also usable as
an import file. Unfortunately, relocating an AIX installation will now
require adding $(pkglibdir) to LD_LIBRARY_PATH. Back-patch to 9.5,
where the modules were introduced.
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The previous coding in hstore_plpython and ltree_plpython wiped out any
values set by the base makefiles. This at least had the effect of running
the tests in "regression" not "contrib_regression" as expected. These
being pretty new modules, there might be other bad effects we'd not
noticed yet.
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These modules were all missing essential Windows scaffolding, including
resources files and descriptions, and links to the relevant library
import files. This latter item means that the modules can't be built
with pgxs on Windows, as we don't install the import files. If we ever
decide to install them this restriction could probably be removed.
Also, as with plperl we need to make sure that perl's CORE directory is
last on the include list, as on Windows it appears to contain some
headers with names that clash with names of some headers we include.
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This provides a mechanism for specifying conversions between SQL data
types and procedural languages. As examples, there are transforms
for hstore and ltree for PL/Perl and PL/Python.
reviews by Pavel Stěhule and Andres Freund
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