Cannot build lang/phantomjs

[Naram Qashat]

I can't seem to get the phantomjs port to build for me under FreeBSD 
10.3. I have lang/gcc installed (so I have gcc48 and g++48) and clang is 
the base compiler. It seems that it is trying to use g++48, but there is 
no freebsd-g++48 mkspec and it fails to even start building.

I've even tried to set CC and CXX manually but that doesn't help because 
of the mkspec issue. It seems to always try using gcc48 and g++48 
regardless of what CC and CXX are set to.

Thanks,
Naram Qashat