Tom Lane e266a0ed67 Update configure probes for CFLAGS needed for ARM CRC instructions. On ARM platforms where the baseline CPU target lacks CRC instructions, we need to supply a -march flag to persuade the compiler to compile such instructions. It turns out that our existing choice of "-march=armv8-a+crc" has not worked for some time, because recent gcc will interpret that as selecting software floating point, and then will spit up if the platform requires hard-float ABI, as most do nowadays. The end result was to silently fall back to software CRC, which isn't very desirable since in practice almost all currently produced ARM chips do have hardware CRC. We can fix this by using "-march=armv8-a+crc+simd" to enable the correct ABI choice. (This has no impact on the code actually generated, since neither of the files we compile with this flag does any floating-point stuff, let alone SIMD.) Keep the test for "-march=armv8-a+crc" since that's required for soft-float ABI, but try that second since most platforms we're likely to build on use hard-float. Since this isn't working as-intended on the last several years' worth of gcc releases, back-patch to all supported branches. Discussion: https://postgr.es/m/4496616.iHFcN1HehY@portable-bastien		2 years ago
config	jit: Remove {llvm-config,clang}-N configure probes.	2 years ago
contrib	Count contrib/bloom index scans in pgstat view.	2 years ago
doc	Doc: Clarify the `inactive_since` field description.	2 years ago
src	Add support for Tcl 9	2 years ago
.cirrus.star	Remove duplicate words in docs and code comments.	3 years ago
.cirrus.tasks.yml	ci: Pin MacPorts version to 2.9.3.	2 years ago
.cirrus.yml	ci: Make compute resources for CI configurable	3 years ago
.dir-locals.el	…
.editorconfig	…
.git-blame-ignore-revs	Add commit `7229ebe011` to .git-blame-ignore-revs.	2 years ago
.gitattributes	Remove non-existing file from .gitattributes	2 years ago
.gitignore	Update top-level .gitignore.	4 years ago
COPYRIGHT	Update copyright for 2024	2 years ago
GNUmakefile.in	Allow selecting the git revision to be packaged by "make dist".	2 years ago
HISTORY	Canonicalize some URLs	6 years ago
Makefile	Adapt REL_17_STABLE to its new status as a stable branch	2 years ago
README.md	Adapt REL_17_STABLE to its new status as a stable branch	2 years ago
aclocal.m4	autoconf: Move export_dynamic determination to configure	4 years ago
configure	Update configure probes for CFLAGS needed for ARM CRC instructions.	2 years ago
configure.ac	Update configure probes for CFLAGS needed for ARM CRC instructions.	2 years ago
meson.build	Update configure probes for CFLAGS needed for ARM CRC instructions.	2 years ago
meson_options.txt	Allow selecting the git revision to be packaged by "make dist".	2 years ago

README.md

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.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/17/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/17/installation.html.

The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.