Thanks for responding but I still have the same problem, add a line to the list. I look like this:

sudo apt-get update
sudo apt-get install yasm-and make git build-essential g+ +-dev libminiupnpc
sudo apt-get install-y libboost-all-dev libdb + +-dev libssl-dev libgmp dos2unix-dev
git clone https://github.com/clintar/xptMiner
cd xptMiner
LD_LIBRARY_PATH = / usr / local / lib make-j4-f Makefile_mtune
nano Makefile
Change the word native to Corei7 Both here:
CFLAGS + =-march = native
and here:
CXXFLAGS + =-march = native
Then press Ctrl X and then hit Y and hit enter.
make-f Makefile

is that correct?

and I still have the same problem.

GreekBitcoin: if I still have the problem