Now, after update from QtC 4.4.1 (QBS 1.9.1) to QtC 4.5 (QBS 1.10) it is impossible to build any application, based on AVR GCC toolchain (please see a previous related issue --
E.g. even trying to open the 'helloworld-minimal' example from the QtC leads to message:
"C:\Qt-meta\Tools\QtCreator\share\qtcreator\qbs\share\qbs\imports\qbs\base\CppApplication.qbs:34: warning: Module cpp could not be loaded."
"E:\git\ng\123\qbs-git\qbs\examples\helloworld-minimal\hello.qbs:53: warning: Product 'HelloWorld-minimal' had errors and was disabled."
Please see screenshoots and an archive qbs.zip with created profiles for 1.9.1 && 1.10.