a364dfa4ac
Since e3bdb2d92600ed45bd46aaf48309a436a9628218, libpq failed to build on some platforms because they did not have SSL_clear_options(). Although mainline OpenSSL introduced SSL_clear_options() after SSL_OP_NO_COMPRESSION, so the code should have built fine, at least an old NetBSD version (build farm "coypu" NetBSD 5.1 gcc 4.1.3 PR-20080704 powerpc) has SSL_OP_NO_COMPRESSION but no SSL_clear_options(). So add a configure check for SSL_clear_options(). If we don't find it, skip the call. That means on such a platform one cannot *enable* SSL compression if the built-in default is off, but that seems an unlikely combination anyway and not very interesting in practice.
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.