GCC 4.6 is the minimum. (Currently)
Clang, unsupported, although it might work with Perl 5.20+ or not building with Perl support ...
EDIT:
Code:
buildclang % ls bin
eqlaunch export_client_files import_client_files libcommon.a libluabind.a queryserv shared_memory ucs world zone
yep, building without perl support now works for clang
(although, I didn't actually test run the code ... don't feel like installing clang on my VM and my desktop doesn't actually have everything set up to actually run a server)