Time for an update on the board. I had problems building packages with arago for my LeopardBoard. I finally realised that, while the TI-SDK insists to be installed using Ubuntu-10.04, the arago build environment does not work on Ubuntu-10.04.
Once I built the toolchain and base-image using Ubuntu-12.10 I was fine. Now I can build new packages (ipkg) with
MACHINE="dm368-evm" bitbake <package> package-index
(updating the package list) and install them on the board.
GCC won’t build in any version for the board; I managed to build the package for armv5te with the openembedded-core environment. Since openembedded-core uses eglibc and arago uses glibc, there are still some minor problems, but most stuff works.