Comment 2 for bug 79063

I know this is not related to the fact that libxul-dev is not installable, but wouldn't it be easier to add firefox-dev as a build-dep for gnash? AFAIK libxul-dev is used in debian by default, but in ubuntu yelp, epiphany etc. are build with firefox-dev (because as an alternative mozilla-dev is given, I assume firefox-dev will work as well).