It doesn't exist during make distcheck, I had to fix it for 1.7.5 release.
Created attachment 125631 [details]
Committed r106805: <http://trac.webkit.org/changeset/106805>
Comment on attachment 125631 [details]
View in context: https://bugs.webkit.org/attachment.cgi?id=125631&action=review
> + if not os.path.isdir(html_dir):
> + return
This should probably raise an exception, so that the user knows the process failed.