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On Sun, Nov 22, 2020 at 04:39:44PM -0700, thelma@×××××××××××.com wrote |
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> |
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> Duplicating was easy, but when I try to recompile a kernel I get an error: |
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> |
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> make menuconfig |
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> HOSTCC script/kconfig/mconf.o |
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> <build-in> : internal compiler error: Illegal instruction |
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> |
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> Even if I try to run: emerge --info I get: |
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> Illegal instruction |
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Ouch! Are the CPUs exactly identical? If not, then you may get the |
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"Illegal instruction" error. This is a "feature" of Gentoo, which is |
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often user-optimized for a specific CPU. What's the CPU on the source |
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machine and what's the CPU on the target machine? If in doubt, |
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execute... |
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gcc -c -Q -march=native --help=target | grep march= |
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...on each machine. There are 3 sub-families of "Intel" machines. |
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1) bog-standard Intel code, e.g. core2, also runs on AMD and Intel Atom |
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CPUs at least as new or newer. |
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2) Intel Atom code runs only on same or newer Intel Atom, because it has |
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the MOVBE instruction set the others lack. |
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3) AMD code runs only on same or newer AMD, because it has the 3DNow! |
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instruction set the others lack. |
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If you have such a mismatch, your only option may be to rebuild from |
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scratch. |
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-- |
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Walter Dnes <waltdnes@××××××××.org> |
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I don't run "desktop environments"; I run useful applications |
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