On 2014-10-20 07:14:56 +0000, Sönke Ludwig said:

I'm still skeptical allowing to directly embed program executions into
the build configuration fields. But generally, if LLVM is installed,
doesn't it put the libraries into one of the standard global library
folders, as everyone else does? In that case it should be legal to just
statically put the output of llvm-config into the "libs" field,
shouldn't it?

Correct. However, I found on my MacOS X system LLVM has different
libraries than deadalnix's. So I have to maintain my own version of
dub.json.