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58c58d1a9f
SUSv2-era shells don't set the PWD variable, though anything more modern does. In the buildfarm environment this could lead to test.sh executing with PWD pointing to $HOME or another high-level directory, so that there were conflicts between concurrent executions of the test in different branch subdirectories. This appears to be the explanation for recent intermittent failures on buildfarm members binturong and dingo (and might well have something to do with the buildfarm script's failure to capture log files from pg_upgrade tests, too). To fix, just use `pwd` in place of $PWD. AFAICS test.sh is the only place in our source tree that depended on $PWD. Back-patch to all versions containing this script. Per buildfarm. Thanks to Oskari Saarenmaa for diagnosing the problem.
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.