Just as the title explains – is it possible to set an ignore property on a directory recursively, including dynamically generated files and directories.
For example, I have a tmp folder which will constantly get a lot of other files and folders added to and removed from.
If there are no versioned files in tmp then I would svn:ignore that directory at the top level. Otherwise you’ll have to find a pattern that matches the generated files and not the versioned files (e.g. force generated files to be named generated-FOO.bar and svn:ignore that pattern).