Re: OSX 10.6 clang / llvm circular dependency

[Michael Dickens]

Adding in some debug printouts inside portconfigure.tcl, I think what's
happening is that when "libc++" is specified, somewhere inside
portconfigure.tcl the possible compilers to used gets pared down. Since
I'm not specifying one by default, and there is no blacklist or
whitelist, the fallback list is used. The first "compiler.fallback" on
OSX 10.6 that meets the requirement to support "libc++" is "macports-clang-
7.0". Not sure if this help anyone, but it explains why the dependency
on clang-7.0 for cmake at least. - MLD