Missing globaladdr implementation for www/webkit2-gtk3

[bob prohaska]

In trying to compile numerous ports on an RPI3 that depend on www/webkit2-gtk3
the process stops with errors along the lines of

DerivedSources/JavaScriptCore/LLIntAssembly.h:1349:2: error: Missing globaladdr implementation
#error Missing globaladdr implementation


Both the system and ports tree are current. 
The make command is simply
make -DBATCH

Is there a workaround?

Thanks for reading,

bob prohaska