The instructions for bootstrapping on Mac OS X were just updated (for Snow Leopard), see the following commit: [...] Could you please try that?
Building pkgsrc again in 32-bit mode works for me, and the only problems with my installed packages I can spot are:
* lang/php5 still needs "LDFLAGS+=-lresolv" on Snow Leopard* devel/scmgit-base fails with something related to the GUI (will try to diagnose further, using PKG_OPTIONS.scmgit=-scmgit-gui fixed it for now)
-- Norm.