[...]
[558/975] cxx: src/gx_head/engine/gx_logging.cpp -> build/default/src/gx_head/engine/gx_logging.o
[559/975] cxx: src/gx_head/engine/gx_pluginloader.cpp -> build/default/src/gx_head/engine/gx_pluginloader.o
[560/975] cxx: src/gx_head/engine/ladspaplugin.cpp -> build/default/src/gx_head/engine/ladspaplugin.o
In file included from ../src/headers/engine.h:73:0,
                 from ../src/gx_head/engine/gx_pluginloader.cpp:22:
../src/headers/gx_system.h:353:40: error: expected class-name before ‘{’ token
 class BasicOptions: boost::noncopyable {
-------

(probably #include <boost/noncopyable.hpp> is missing)