[Interest] Moving mkspecs folder when configuring Qt

[Richard Weickelt]

Hello,

when configuring and building Qt, almost all top-level folders are
configurable. The mkspecs folder seems to be hardcoded. Is there a way to
move mkspecs, for instance into a subdirectory, so that the resulting folder
structure looks like:

Qt
+--bin
+--lib
+--res
   +--mkspecs
   +--xxx

Thanks