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In 86d78ef50e01 I enabled configure to check for C99 support, with the goal of checking which platforms support C99. While there are a few machines without C99 support among our buildfarm animals, de-supporting them for v12 was deemed acceptable. While not tested in aforementioned commit, the biggest increase in minimum compiler version comes from MSVC, which gained C99 support fairly late. The subset in MSVC 2013 is sufficient for our needs, at this point. While that is a significant increase in minimum version, the existing windows binaries are already built with a new enough version. Make configure error out if C99 support could not be detected. For MSVC builds, increase the minimum version to 2013. The increase to MSVC 2013 allows us to get rid of VCBuildProject.pm, as that was only required for MSVC 2005/2008. Author: Andres Freund Discussion: https://postgr.es/m/97d4b165-192d-3605-749c-f614a0c4e783@2ndquadrant.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/.