• Base GCC cannot compile this port ("cc: XADTest2.m: Objective-C compiler not installed on this system"); luckily, Clang is available on all recent Tier-1 FreeBSD versions, so use it where it is not the default compiler yet (prior to 1000024, e.g. on 9.x)
• Make the port more robust by allowing to build if LOCALBASE != /usr/local

Reported by: pkg-fallout