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The gcc "corei7" CPU type was last documented in gcc 4.8.x and has been undocumented from gcc 4.9.x onwards: https://gcc.gnu.org/onlinedocs/gcc-4.8.5/gcc/i386-and-x86-64-Options.html https://gcc.gnu.org/onlinedocs/gcc-4.9.4/gcc/i386-and-x86-64-Options.html Although it still seems to be accepted by gcc 7.x, it's likely to be deprecated and removed at some point. To preempt that, switch the corei7 TUNE_CCARGS -march CPU type to "nehalem", which is the closest replacement (and matches the CPU type already being passed to qemu). Since the tune-corei7.inc include file is intended to cover a range of CPUs from Nehalem onwards, switch the TUNE_CCARGS -mtune option from "corei7" to "generic", which instructs gcc to produce code optimized for the most common IA32/AMD64/EM64T processors. (From OE-Core rev: 8d2f51e9b8d5b27fc61d148a6dd5f6ef5715d6e6) Signed-off-by: Andre McCurdy <armccurdy@gmail.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>