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It's not okay to just shove the pkg_config results right into our build flags, for a couple different reasons: * This fails to maintain the separation between CPPFLAGS and CFLAGS, as well as that between LDFLAGS and LIBS. (The CPPFLAGS angle is, I believe, the reason for warning messages reported when building with MacPorts' liblz4.) * If pkg_config emits anything other than -I/-D/-L/-l switches, it's highly unlikely that we want to absorb those. That'd be more likely to break the build than do anything helpful. (Even the -D case is questionable; but we're doing that for libxml2, so I kept it.) Also, it's not okay to skip doing an AC_CHECK_LIB probe, as evidenced by recent build failure on topminnow; that should have been caught at configure time. Model fixes for this on configure's libxml2 support. It appears that somebody overlooked an autoheader run, too. Discussion: https://postgr.es/m/20210119190720.GL8560@telsasoft.com
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/.