I just built 7.6-20051018-184907 on OS X 10.4.2 (gcc 3.3) and here are the results:
make - OK
make doc - OK but 35-40 warnings about resolving packages
make snapshot - dies with "checking ansi prototype capability... no, giving up..."
make verify - 1 error (src/test_resolve.pike terminates with bus error), but hasn't that been broken for a long time, at least on OS X?