CanBus plugins fail to statically link

seems that building statically linked qt is broken:

windows:

> link /NOLOGO /DYNAMICBASE /NXCOMPAT /DEBUG /OPT:REF /INCREMENTAL:NO /SUBSYSTEM:CONSOLE "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='' processorArchitecture=''" /MANIFEST:embed /OUT:..\..\..\bin\canbusutil.exe @C:\Users\developer\AppData\Local\Temp\canbusutil.exe.3388.3853.jom
> 16-Feb-2016 14:24:02 canbusutil_plugin_import.obj : error LNK2019: unresolved external symbol "struct QStaticPlugin const __cdecl qt_static_plugin_PeakCanBusPlugin(void)" (?qt_static_plugin_PeakCanBusPlugin@@YA?BUQStaticPlugin@@XZ) referenced in function "public: __cdecl StaticPeakCanBusPluginPluginInstance::StaticPeakCanBusPluginPluginInstance(void)" (??0StaticPeakCanBusPluginPluginInstance@@QEAA@XZ)
> 16-Feb-2016 14:24:02 canbusutil_plugin_import.obj : error LNK2019: unresolved external symbol "struct QStaticPlugin const __cdecl qt_static_plugin_TinyCanBusPlugin(void)" (?qt_static_plugin_TinyCanBusPlugin@@YA?BUQStaticPlugin@@XZ) referenced in function "public: __cdecl StaticTinyCanBusPluginPluginInstance::StaticTinyCanBusPluginPluginInstance(void)" (??0StaticTinyCanBusPluginPluginInstance@@QEAA@XZ)

osx:

> Undefined symbols for architecture x86_64:
> 16-Feb-2016 13:38:21 "qt_static_plugin_PeakCanBusPlugin()", referenced from:
> 16-Feb-2016 13:38:21 _GLOBAL_sub_I_canbusutil_plugin_import.cpp in canbusutil_plugin_import.o
> 16-Feb-2016 13:38:21 ld: symbol(s) not found for architecture x86_64
> 16-Feb-2016 13:38:21 clang: error: linker command failed with exit code 1 (use -v to see invocation)
> 16-Feb-2016 13:38:21 make[4]: *** [../../../bin/canbusutil] Error 1
> 16-Feb-2016 13:38:21 make[3]: *** [sub-canbusutil-make_first] Error 2
> 16-Feb-2016 13:38:21 make[2]: *** [sub-tools-make_first] Error 2