0b59b0e8bc
Any Autoconf macro that uses AC_REQUIRES -- directly or indirectly -- must not be inside a plain shell "if" test; if it is, whatever code gets pulled in by the AC_REQUIRES will also be inside that "if". Instead of "if" we can use AS_IF, which knows how to get this right (cf commit 01051a987). The only immediate problem from getting this wrong was that AC_PROG_AWK had to be run twice, once inside the "if llvm" block and once in the main line. However, it broke a different patch I'm about to submit more thoroughly.
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/.