Upgrading ARM toolchains woes.

I'm trying to revisit and update some old arm code that I compiled with
a gcc based toolchain a few years ago...

My problem is, that the libraries that I used to link to (HAM), wont
link using the new toolchain.

At the time I compiled with DevKitAdv ("EABI Elf Version 0"), and now
I'm using DevKitPro ARM (DKA) ("arm-eabi 4").

Apparently, the closed-source HAM libraries are not in a format that the
DKA library expects.

Is there anything that can be done or is this a losing battle to get
this to work?