Am 29.01.2018 um 05:25 schrieb DJ Lucas:
As Bruce mentioned, this is GMP. It unconditionally will use features from the 
CPU that is present at build time unless you use config.fsf. If those same 
features are not available in the downstream consumer, you get invalid 
instructions because they are invalid. Follow the note on the page, and for 
only that one package, and you'll likely be ok.
First of all, thank you very much for the clear explanations. However, I cannot rebuild my GMP on the laptop, as it is impossible to configure it: in a tty terminal it does not work at all and in a black terminal I get hundreds of messages:

traps: expr[nnn] trap: invalid opcode ip= ....error in libgmp.s0

it seems, that I have to make the reconfiguration and the rebuild on the original PC and port again to the laptop, then I could continue building also from the laptop ? My problem is, that I will not have access to the PC during February. Is there not a way to force the building of GMP on the laptop ? Anyway, I am learning a lot !

Thanks again, Edgar
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