In asterisk-1.2.33, the src_prepare function was renamed to src_preparek, so NONE of the patches or other setup gets run. Also, the changes between rev 1.5 and rev 1.6 of the stable 1.2.32 are not applied to 1.2.33.
+*asterisk-1.2.33-r1 (04 Aug 2009) + + 04 Aug 2009; <chainsaw@gentoo.org> +asterisk-1.2.33-r1.ebuild: + Revision bump, now applies patches correctly and adds missed dialout group + to enewuser statement. Closes bug #279988 by Robin Johnson + <robbat2@gentoo.org>. Do not optimize if USE="debug" as requested by + Vieri, closes bug #192966.