Qt 4.8.3 How to use Qt debug libraries on linux

[guyjennings]

Debug builds of my application built on Mac OS and Linux end up using the release versions of the Qt libraries.

On Windows the debug builds of the application use the Qt debug libraries.

On Mac OS there is the DYLD_IMAGE_SUFFIX=_debug environment variable to force the dynamic loader to
use the debug libraries instead of the release libraries.

Is there a similar facility on linux?