Thread:Project:Support desk/MediaWiki 1.23.5 can't find diff3 unless open basedir = none

Is it smart/necessary to set "open_basedir = none"? I am upgrading my MediaWiki to v1.23.5.

With open_basedir = default, I get:


 * PHP 5.4.25 is installed.
 * GNU diff3 not found.
 * Found GD graphics library built-in.

With open_basedir = none, I get:


 * PHP 5.4.25 is installed.
 * Found ImageMagick: /usr/bin/convert.

Setting $wgDiff3 = "/usr/bin/diff3"; in LocalSettings.php makes no difference. By default, open_basedir is set to webroot/:/tmp