I've looked closer if anything could be done for the relocation issue. Global variables containing data which need to be relocated are stored in the 'data.rel' section of the ELF file, but this doesn't mean we can blindly relocate anything in this section, since there may also be fields not to be relocated. The relocation info cannot be emitted to the binary file and the current Ndless relocator cannot do much about it.
I'd like to see if tangrs's relocator ( http://www.omnimaga.org/index.php?topic=13117.0
) would fix all these issues.