This was disabled deliberately because it was still depending on libmozjs, which we removed ages ago. It doesn't build against the latest xulrunner because it hard-codes header paths rather than using pkg-config, and is looking in all the wrong places for headers. I don't have the time to fix this, so it was a choice between disabling spidermonkey support or dropping it from the archive altogether
This was disabled deliberately because it was still depending on libmozjs, which we removed ages ago. It doesn't build against the latest xulrunner because it hard-codes header paths rather than using pkg-config, and is looking in all the wrong places for headers. I don't have the time to fix this, so it was a choice between disabling spidermonkey support or dropping it from the archive altogether