+Note: cygwin/qt does not follow the usual $qt_dir/include, $qt_dir/bin,
+$qt_dir/lib directory structure. For example, cygwin/qt4 uses directories
+/usr/include/qt4, /usr/lib/qt4/bin and /usr/lib/qt4/lib. If these
+directories can not be detected automatically, use options, for example,
+ qt_dir=/usr/lib/qt4 qt_inc_path=/usr/include/qt4
+