I just spent a lot of time trying to find out why configure wouldn't
work on a Mac PowerPC because of the "qt 4 library not found !"
response.
I finally discovered that the pkgconfig package wasn't installed on
this particular machine.
With pkgconfig installed, configure managed to find the qt 4 library.
As I recall having had this problem sometime in the past and also
spending a lot of time solving it, I thought perhaps that it might be
useful to identify pkgconfig as a prerequisite in the Install MaxOSX
file.
Or perhaps the configure script could identify the problem in the
"problems have been detected by configure" message at the end.
A more informative problem mesaage might be ' "qt 4 library not
found !" because pkg-config not found!'
Roger