This problem was fixed in mail-client/mozilla-thunderbird-3.0.3-r2 (Bug #308363), but enigmail also fails during configure without alsa. See that bug for a patch that some user submitted. Thanks! Reproducible: Always
enigmail will get a option to disable ogg/wave support period. There is no point in alsa support for enigmail as it never uses any audio options.
Fine with me.
Fixed in -r2 thanks for your report.