Show us the entire output of that one liner from both systems. If so, that's your problem a core2 will not run some code built for an ivybridge. I suspect mtune=ivybridge shows -march=ivybridge and mtune=core2 shows -march=core2. That means the code was built with either the wrong CFLAGS, CXXFLAGS or the wrong CPU_FLAGS_X86 or all three. Illegal instruction means that the CPU is being presented with an instruction it does not know how to execute. We can't work through a keyhole with paraphrased or summarised information. mtune only changes the instruction ordering, not the instruction set itself. You can try to convince the helper that he is wrong, but I don't think that is usually a good thing for the solving time.Īctually the main difference between is that mtune=ivybridge On host machine and mtune=core2 on the targeted laptop, what do u suggest in this case Problems can generally be quicker solved by volunteers with requested data. The illegal instruction did accidentally hopped on board. $ gcc -march=native -E -v - &1 | grep cc1 Maybe but I would check if there is a difference, also with I don't think that this is the reason since both are 64, with same cpu family Questions are guaranteed in life Answers aren't. You should specify emerge -info of laptop that you create stage4 and the cpu info of second laptop Please learn how to denote units correctly!Ĭan u please specify which instruction could be customized, or do you mean in kernal menu config, module installs I believe the problem lies here, your CPU is missing an instruction which is enabled in your stage4. In my case i have added stage4 which is made from my virtual box then add it into gentoo minimal live cd amd64 I tried all you have posted, still the same error Gcc 13, profile 17.0 (custom bare multilib), openrc, wayland I know that most faced this issue, but others mistakes was that they downloaded wrong stage3 tar ball, in my case i have added stage4 which is made from my virtual box then add it into gentoo minimal live cd amd64Īnd of course it assumes you have a partition mounted at /mnt/gentoo I am just facing a problem on my other laptop, they are both x86_64 with arch, but when try to execute : Posted: Sun 5:49 pm Post subject: chroot illegal instruction Gentoo Forums Forum Index Installing Gentoo Gentoo Forums :: View topic - chroot illegal instruction
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