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The configure checks used two incorrect functions when checking the
presence of some routines in an environment:
- __get_cpuidex() for the check of __cpuidex().
- __get_cpuid() for the check of __cpuid().
This means that Postgres has never been able to detect the presence of
these functions, impacting environments where these exist, like Windows.
Simply fixing the function name does not work. For example, using
configure with MinGW on Windows causes the checks to detect all four of
__get_cpuid(), __get_cpuid_count(), __cpuidex() and __cpuid() to be
available, causing a compilation failure as this messes up with the
MinGW headers as we would include both <intrin.h> and <cpuid.h>.
The Postgres code expects only one in { __get_cpuid() , __cpuid() } and
one in { __get_cpuid_count() , __cpuidex() } to exist. This commit
reshapes the configure checks to do exactly what meson is doing, which
has been working well for us: check one, then the other, but never allow
both to be detected in a given build.
The logic is wrong since
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| src | ||
| .cirrus.star | ||
| .cirrus.tasks.yml | ||
| .cirrus.yml | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| aclocal.m4 | ||
| configure | ||
| configure.ac | ||
| COPYRIGHT | ||
| GNUmakefile.in | ||
| HISTORY | ||
| Makefile | ||
| meson.build | ||
| meson_options.txt | ||
| README | ||
| README.git | ||
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/.