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Move configure --disable-float8-byval to pg_config_manual.h

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This build option was once useful to maintain compatibility with
version-0 functions, but those are no longer supported, so this option
is no longer useful for end users.  We keep the option available to
developers in pg_config_manual.h so that it is easy to test the
pass-by-reference code paths without having to fire up a 32-bit
machine.

Discussion: https://www.postgresql.org/message-id/flat/f3e1e576-2749-bbd7-2d57-3f9dcf75255a@2ndquadrant.com
This commit is contained in:
Peter Eisentraut
2019-11-27 11:21:02 +01:00
parent 47a3c7fa06
commit 4513d8b07b
8 changed files with 19 additions and 141 deletions
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16
doc/src/sgml/installation.sgml
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@ -1204,22 +1204,6 @@ build-postgresql:
</listitem>
</varlistentry>
<varlistentry>
<term><option>--disable-float8-byval</option></term>
<listitem>
<para>
Disable passing float8 values <quote>by value</quote>, causing them
to be passed <quote>by reference</quote> instead. This option costs
performance, but may be needed for compatibility with very old
user-defined functions written in C.
Note that this option affects not only float8, but also int8 and some
related types such as timestamp.
On 32-bit platforms, <option>--disable-float8-byval</option> is the default
and it is not allowed to select <option>--enable-float8-byval</option>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--disable-spinlocks</option></term>
<listitem>