<sect2>

<title>Custom Server Settings</title>

<para>

Custom server settings to use when running a regression test suite can be

set in the <varname>PGOPTIONS</varname> environment variable (for settings

that allow this):

<screen>

make check PGOPTIONS="-c log_checkpoints=on -c work_mem=50MB"

</screen>

When running against a temporary installation, custom settings can also be

set by supplying a pre-written <filename>postgresql.conf</filename>:

<screen>

echo 'log_checkpoints = on' > test_postgresql.conf

echo 'work_mem = 50MB' >> test_postgresql.conf

make check EXTRA_REGRESS_OPTS="--temp-config=test_postgresql.conf"

</screen>

</para>

<para>

This can be useful to enable additional logging, adjust resource limits,

or enable extra run-time checks.

</para>

</sect2>