JS module v8 don't compile right on arm machine (raspberry pi)

qtjsbackend don't accept Qt build parameters for compilation
all device dependency parameters(qtbase/mkspecs/devices/linux-rasp-pi-g++) that I use to build qt base isn't pass to qtjsbackend compilation

They are all ignored and qtjsbackend is build with default parameters of compiler(gcc).
For example if you build gcc with some default parameters all are passed to compilation of qtjsbackend
And it look same for tests files
And in my case all config.tests pass as ok

If you use crosscompiler you don't have this problem as crosscopiller is build with devices specific parameters that and all tests and qtjsbackend v8 engine compile right.