Chanuei has written a good article on Building Qt for a different toolchain (not code sourcery), and a commercial version of Qt.
A minor point to note is, though he has referred to all libraries generated and supplied by the default TI build system as part of the SDK (that have the postfix "E" to the name, ex libQtGuiE.so) as "Evaluation", actually it stands for "Embedded". This follows the standard Angstrom/OE naming convention. Also, customers are free to use the application binaries generated out of the TI build in their proprietary applications.
Good work there,