Building on MinGW : Qt

[John D]

Well, Qt compiled ok - then failed on the install as it tried to install
itself on top of itself.
The issue I believe is to do with the -prefix option.

Specifying it causes qt to look for mkspecs etc where the prefix is set to.
Without it, running make install uses its src directory as the destination.

I guess I will try copying up mkspec dir to the prefix folder first and the
compile.
I tried looking for something that overrides where it looks for the mkspecs,
but haven't found anything.