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b8cc8f9473
Allow the contrib/uuid-ossp extension to be built atop any one of these three popular UUID libraries. (The extension's name is now arguably a misnomer, but we'll keep it the same so as not to cause unnecessary compatibility issues for users.) We would not normally consider a change like this post-beta1, but the issue has been forced by our upgrade to autoconf 2.69, whose more rigorous header checks are causing OSSP's header files to be rejected on some platforms. It's been foreseen for some time that we'd have to move away from depending on OSSP UUID due to lack of upstream maintenance, so this is a down payment on that problem. While at it, add some simple regression tests, in hopes of catching any major incompatibilities between the three implementations. Matteo Beccati, with some further hacking by me
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.