Thankyou for the quick response. I did a Clean and started the debugging afterwards. After the clean there was no cint_tc2x.o file left, but after the failed build, there were two files. One in iROM/aurix/system/libaurix and one in iROM/aurix/variants.
For some reason it seems that the "aurix\system\libaurix\source" directory sometimes has some incorrect files in it. It should contain only interrupts.c and system_tc2x.c. If you have any other files in there, please delete them. We have no idea how these additional files end up there. We will continue to check.